MONDAY SNOW

March 25, 2013 - Leave a Response

UPDATE:

6:00 PM, Monday, 25 March, 2013

The Baltimore official snowfall total for Monday at BWI-Marshall Airport as of 5:00pm was 3.2 inches, beating the 1933 record of 2.5 inches. The final snowfall total for Monday will not be determined until after midnight.

Today’s storm was strengthening off the coast during the afternoon and the dramatic NASA satellite image below demonstrates how surprisingly similar this deepening low pressure center  resembles a hurricane.

winthur

The list below is the updated snow totals information from the National Weather Service:

PUBLIC INFORMATION STATEMENT
SPOTTER REPORTS
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
315 PM EDT MON MAR 25 2013

THE FOLLOWING ARE UNOFFICIAL OBSERVATIONS TAKEN DURING THE PAST 6
HOURS FOR THE STORM THAT HAS BEEN AFFECTING OUR REGION. APPRECIATION
IS EXTENDED TO HIGHWAY DEPARTMENTS...COOPERATIVE OBSERVERS...SKYWARN
SPOTTERS AND MEDIA FOR THESE REPORTS. THIS SUMMARY IS ALSO AVAILABLE
ON OUR HOME PAGE AT WEATHER.GOV/BALTIMORE

********************STORM TOTAL SNOWFALL********************

LOCATION          STORM TOTAL     TIME/DATE   COMMENTS                   
                     SNOWFALL           OF 
                     /INCHES/   MEASUREMENT

DISTRICT OF COLUMBIA

...DISTRICT OF COLUMBIA...
   AMERICAN UNIVERSITY    2.5  1100 AM  3/25  BROADCAST MEDIA         

MARYLAND

...ALLEGANY COUNTY...
   2 NNW FROSTBURG        9.0   300 PM  3/25  TRAINED SPOTTER         
   ECKHART MINES          8.0  1020 AM  3/25  TRAINED SPOTTER         
   1 S ECKHART MINES      7.0  1031 AM  3/25  TRAINED SPOTTER         

...ANNE ARUNDEL COUNTY...
   BWI AIRPORT            3.2   158 PM  3/25  AIRPORT                 
   1 ENE CHURCHTON        2.5  1047 AM  3/25  TRAINED SPOTTER         
   2 NW RIVA              1.5  1025 AM  3/25  TRAINED SPOTTER         

...BALTIMORE COUNTY...
   1 E OELLA              5.3   200 PM  3/25  TRAINED SPOTTER         
   2 NW LONG GREEN        5.3  1000 AM  3/25  TRAINED SPOTTER         
   1 SE GARRISON          5.2  1050 AM  3/25  TRAINED SPOTTER         
   2 NE CATONSVILLE       5.0  1048 AM  3/25  TRAINED SPOTTER         
   1 S PARKVILLE          5.0   928 AM  3/25  TRAINED SPOTTER         
   2 NNW BROOKLANDVILLE   4.8  1130 AM  3/25  TRAINED SPOTTER         
   PARKVILLE              4.5   940 AM  3/25  TRAINED SPOTTER         
   1 SW DUNDALK           4.1  1057 AM  3/25  TRAINED SPOTTER         
   REISTERSTOWN           4.0  1110 AM  3/25  PUBLIC                  
   WHITE MARSH            4.0  1052 AM  3/25  FIRE DEPT/RESCUE        
   2 ESE HUNT VALLEY      3.8  1000 AM  3/25  BROADCAST MEDIA         
   1 NE ROSSVILLE         3.5  1113 AM  3/25  TRAINED SPOTTER         

...BALTIMORE CITY...
   PIMLICO                5.0   945 AM  3/25  TRAINED SPOTTER         

...CALVERT COUNTY...
   2 N HUNTINGTOWN        2.9   945 AM  3/25  NWS EMPLOYEE            

...CARROLL COUNTY...
   1 ENE NEW WINDSOR      5.0  1100 AM  3/25  TRAINED SPOTTER         
   3 WSW LINEBORO         5.0   940 AM  3/25  TRAINED SPOTTER         
   3 SE WINFIELD          4.8  1100 AM  3/25  TRAINED SPOTTER         
   WOODBINE               3.0  1029 AM  3/25  PUBLIC                  
   1 S WINFIELD           3.0   930 AM  3/25  TRAINED SPOTTER         

...CHARLES COUNTY...
   1 SW WALDORF           3.0   930 AM  3/25  NWS EMPLOYEE            
   2 ESE BRYANS ROAD      2.7   930 AM  3/25  TRAINED SPOTTER         

...FREDERICK COUNTY...
   1 NE POINT OF ROCKS    4.1  1200 PM  3/25  NWS EMPLOYEE            
   2 NW NEW MARKET        3.2  1100 AM  3/25  NWS EMPLOYEE            

...HARFORD COUNTY...
   WHITEFORD              3.0  1115 AM  3/25  TRAINED SPOTTER         

...HOWARD COUNTY...
   2 N COLUMBIA           5.4   930 AM  3/25  TRAINED SPOTTER         
   GLENWOOD               5.0  1126 AM  3/25  PUBLIC                  
   WOODSTOCK              5.0  1044 AM  3/25  PUBLIC                  
   2 SE GAITHER           5.0  1000 AM  3/25  COCORAHS                

...MONTGOMERY COUNTY...
   1 NNE FAIRLAND         4.5  1056 AM  3/25  TRAINED SPOTTER         
   1 ESE NORBECK          4.0   945 AM  3/25  TRAINED SPOTTER         
   2 NNW NORTH POTOMAC    3.5  1200 PM  3/25  NWS EMPLOYEE            
   1 WSW FAIRLAND         3.0  1030 AM  3/25  TRAINED SPOTTER         
   TAKOMA PARK            1.7   922 AM  3/25  TRAINED SPOTTER         

...PRINCE GEORGES COUNTY...
   1 N GREENBELT          3.0  1010 AM  3/25  COCORAHS                
   1 SW OXON HILL         2.8  1045 AM  3/25  CO-OP OBSERVER          

...ST. MARYS COUNTY...
   1 NNW CALIFORNIA       1.0   915 AM  3/25  TRAINED SPOTTER         
   2 NE BUSHWOOD          0.5  1228 PM  3/25  TRAINED SPOTTER         

...WASHINGTON COUNTY...
   MAUGANSVILLE           6.2   100 PM  3/25  PUBLIC                  
   ROHERSVILLE            5.5  1015 AM  3/25  TRAINED SPOTTER         
   3 SSW CAVETOWN         4.0   945 AM  3/25  TRAINED SPOTTER         
   2 SSW LONG MEADOW      4.0  1030 AM  3/25  TRAINED SPOTTER
PUBLIC INFORMATION STATEMENT
SPOTTER REPORTS
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
447 PM EDT MON MAR 25 2013

THE FOLLOWING ARE UNOFFICIAL OBSERVATIONS TAKEN DURING THE MARCH 25TH
STORM THAT HAS BEEN AFFECTING OUR REGION. APPRECIATION IS EXTENDED TO
HIGHWAY DEPARTMENTS...COOPERATIVE OBSERVERS...SKYWARN SPOTTERS AND
SOCIAL MEDIA FOR THESE REPORTS. THIS SUMMARY IS ALSO AVAILABLE ON OUR
HOME PAGE AT WEATHER.GOV/PHI

********************STORM TOTAL SNOWFALL********************

LOCATION          STORM TOTAL     TIME/DATE   COMMENTS
                     SNOWFALL           OF
                     /INCHES/   MEASUREMENT

DELAWARE

...KENT COUNTY...
   DOVER                  1.9   919 AM  3/25  DEOS
   CAMDEN                 1.5   908 AM  3/25  PUBLIC
   VIOLA                  1.4   920 AM  3/25  DEOS
   HARRINGTON             0.9   921 AM  3/25  DEOS

...NEW CASTLE COUNTY...
   HOCKESSIN              3.3   929 AM  3/25  PUBLIC
   PIKE CREEK             3.0   856 AM  3/25  PUBLIC
   NEW CASTLE             2.9   409 PM  3/25  TRAINED SPOTTER
   ODESSA                 2.8  1135 AM  3/25  TRAINED SPOTTER
   GREENVILLE             2.6  1000 AM  3/25  DEOS
   NEWARK                 2.2   741 AM  3/25  LESS ON PAVEMENT
   BLACKBIRD              2.2   919 AM  3/25  DEOS
   GLASGOW                1.3   918 AM  3/25  DEOS
   WILMINGTON AIRPORT     1.1   200 PM  3/25  ASOS
   PRICES CORNER          1.1   914 AM  3/25  DEOS
   WILMINGTON             1.1   200 PM  3/25  TRAINED SPOTTER
   CLAYMONT               1.1   914 AM  3/25  DEOS
   WHITE CLAY CREEK       1.0   917 AM  3/25  DEOS

...SUSSEX COUNTY...
   BRIDGEVILLE            0.9   923 AM  3/25  DEOS
   ELLENDALE              0.4   922 AM  3/25  DEOS

MARYLAND

...CECIL COUNTY...
   COLORA                 3.7  1059 AM  3/25  COCORAHS

...KENT COUNTY...
   MILLINGTON             3.0  1035 AM  3/25  PUBLIC
   ROCK HALL              2.0   850 AM  3/25  PUBLIC

...QUEEN ANNE`S COUNTY...
   QUEENSTOWN             3.0   850 AM  3/25  PUBLIC

...TALBOT COUNTY...
   EASTON                 2.0   820 AM  3/25  PUBLIC
PUBLIC INFORMATION STATEMENT
SPOTTER REPORTS
NATIONAL WEATHER SERVICE WAKEFIELD VA
145 PM EDT MON MAR 25 2013

THE FOLLOWING ARE UNOFFICIAL OBSERVATIONS TAKEN DURING THE PAST 24
HOURS FOR THE STORM THAT HAS BEEN AFFECTING OUR REGION. APPRECIATION
IS EXTENDED TO HIGHWAY DEPARTMENTS...COOPERATIVE OBSERVERS...SKYWARN
SPOTTERS AND MEDIA FOR THESE REPORTS. THIS SUMMARY IS ALSO AVAILABLE
ON OUR HOME PAGE AT WEATHER.GOV/WAKEFIELD

********************STORM TOTAL SNOWFALL********************

LOCATION          STORM TOTAL     TIME/DATE   COMMENTS
                     SNOWFALL           OF
                     /INCHES/   MEASUREMENT

MARYLAND

...DORCHESTER COUNTY...
   CAMBRIDGE              0.5   815 AM  3/25  VIA FACEBOOK
 PREVIOUS ENTRY:

The snowfall finally started in the predawn hours on Monday with temperatures close to the freezing point so it started to accumulate. By 8:30am as much as 5 inches of snow was reported around the area. More is on the way.

Image

The National Weather Service 8am surface map shows the strengthening offshore low with the weakening low over Ohio. The offshore low will be pushing moisture toward the Baltimore area the rest of the day with what is expected to be a combination of rain and snow.

Image

The storm total forecast map indicates a potential for a near record snowfall for Baltimore. The record is 2.5 inches set in 1933. It’s tough to make snow in late March.

The snow totals reported to the National Weather Service as of 8:30 this morning are as follows.

Image

PUBLIC INFORMATION STATEMENT
SPOTTER REPORTS
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
853 AM EDT MON MAR 25 2013

THE FOLLOWING ARE UNOFFICIAL OBSERVATIONS TAKEN DURING THE PAST 3
HOURS FOR THE STORM THAT HAS BEEN AFFECTING OUR REGION. APPRECIATION
IS EXTENDED TO HIGHWAY DEPARTMENTS...COOPERATIVE OBSERVERS...SKYWARN
SPOTTERS AND MEDIA FOR THESE REPORTS. THIS SUMMARY IS ALSO AVAILABLE
ON OUR HOME PAGE AT WEATHER.GOV/BALTIMORE

********************STORM TOTAL SNOWFALL********************

LOCATION          STORM TOTAL     TIME/DATE   COMMENTS                   
                     SNOWFALL           OF 
                     /INCHES/   MEASUREMENT

DISTRICT OF COLUMBIA

...DISTRICT OF COLUMBIA...
   DALECARLIA RESERVOIR   1.0   800 AM  3/25  CO-OP OBSERVER          

MARYLAND

...ALLEGANY COUNTY...
   1 ENE MOUNT SAVAGE     8.0   817 AM  3/25  TRAINED SPOTTER         
   FROSTBURG              7.1   700 AM  3/25  CO-OP OBSERVER          
   1 S CUMBERLAND         6.0   700 AM  3/25  CO-OP OBSERVER          
   2 WNW OLDTOWN          5.5   630 AM  3/25  TRAINED SPOTTER         

...ANNE ARUNDEL COUNTY...
   FORT MEADE             4.0   820 AM  3/25  PUBLIC                  
   ANNAPOLIS              2.5   700 AM  3/25  NWS EMPLOYEE            
   BWI AIRPORT            2.1   800 AM  3/25  AIRPORT                 
   LINTHICUM              2.0   615 AM  3/25  DEPT OF HIGHWAYS        

...BALTIMORE COUNTY...
   2 NE CATONSVILLE       4.0   815 AM  3/25  TRAINED SPOTTER         
   1 E GLYNDON            4.0   745 AM  3/25  PUBLIC                  
   1 SE GARRISON          4.0   730 AM  3/25  TRAINED SPOTTER         
   1 E OELLA              3.5   745 AM  3/25  TRAINED SPOTTER         
   2 NW LONG GREEN        3.5   730 AM  3/25  TRAINED SPOTTER         
   1 SW LONG GREEN        3.5   700 AM  3/25  COCORAHS                
   1 WSW GLYNDON          3.4   852 AM  3/25  TRAINED SPOTTER         
   DUNDALK                3.0   830 AM  3/25  PUBLIC                  
   HUNT VALLEY            2.2   645 AM  3/25  BROADCAST MEDIA         
   WHITE MARSH            1.5   820 AM  3/25  PUBLIC                  
   1 NE ROSSVILLE         1.2   615 AM  3/25  TRAINED SPOTTER         

...BALTIMORE CITY...
   PIMLICO                3.5   715 AM  3/25  TRAINED SPOTTER         

...CALVERT COUNTY...
   2 WNW HUNTINGTOWN      2.0   715 AM  3/25  TRAINED SPOTTER         
   LUSBY                  1.0   630 AM  3/25  PUBLIC                  

...CARROLL COUNTY...
   WESTMINSTER            5.0   830 AM  3/25  PUBLIC                  
   UNION BRIDGE           5.0   820 AM  3/25  PUBLIC                  
   ELDERSBURG             5.0   830 AM  3/25  PUBLIC                  
   2 E LINEBORO           4.7   807 AM  3/25  TRAINED SPOTTER         
   3 WSW LINEBORO         4.5   729 AM  3/25  TRAINED SPOTTER         
   3 NNW GAITHER          4.5   803 AM  3/25  TRAINED SPOTTER         
   1 W WESTMINSTER        4.5   730 AM  3/25  PUBLIC                  
   3 SE WINFIELD          2.4   700 AM  3/25  TRAINED SPOTTER         

...CHARLES COUNTY...
   SAINT CHARLES          2.5   800 AM  3/25  NWS EMPLOYEE            
   WHITE PLAINS           2.0   630 AM  3/25  BROADCAST MEDIA         

...FREDERICK COUNTY...
   MYERSVILLE             5.5   700 AM  3/25  NWS EMPLOYEE            
   MIDDLETOWN             5.0   630 AM  3/25  BROADCAST MEDIA         
   4 ESE SMITHSBURG       5.0   820 AM  3/25  PUBLIC                  
   THURMONT               4.0   559 AM  3/25  PUBLIC                  
   2 N LIBERTYTOWN        4.0   820 AM  3/25  TRAINED SPOTTER         
   3 NW FREDERICK         4.0   705 AM  3/25  PUBLIC                  
   NEW MARKET             3.1   620 AM  3/25  TRAINED SPOTTER         
   2 NW NEW MARKET        2.3   600 AM  3/25  TRAINED SPOTTER         
   2 SE EMMITSBURG        2.0   625 AM  3/25  CO-OP OBSERVER          

...HARFORD COUNTY...
   2 E SCARBORO           3.0   758 AM  3/25  TRAINED SPOTTER         
   EDGEWOOD               3.0   820 AM  3/25  PUBLIC                  

...HOWARD COUNTY...
   2 NNE COLUMBIA         4.3   720 AM  3/25  TRAINED SPOTTER         
   ELLICOTT CITY          4.0   715 AM  3/25  COUNTY EMRG MGMT        
   2 SE GAITHER           4.0   700 AM  3/25  COCORAHS                
   2 N COLUMBIA           3.3   700 AM  3/25  TRAINED SPOTTER         
   1 SSE SIMPSONVILLE     3.0   700 AM  3/25  TRAINED SPOTTER         
   1 WSW SAVAGE           2.0   605 AM  3/25  TRAINED SPOTTER         

...MONTGOMERY COUNTY...
   1 W FAIRLAND           4.0   805 AM  3/25  TRAINED SPOTTER         
   1 ENE GAITHERSBURG     4.0   800 AM  3/25  TRAINED SPOTTER         
   1 NNE FAIRLAND         3.5   700 AM  3/25  TRAINED SPOTTER         
   1 ESE NORBECK          3.5   700 AM  3/25  TRAINED SPOTTER         
   2 N DARNESTOWN         3.5   715 AM  3/25  PUBLIC                  
   2 W ROCKVILLE          3.5   700 AM  3/25  COCORAHS                
   1 ENE OLNEY            3.0   615 AM  3/25  COCORAHS                
   1 NNW DALECARLIA RES   2.0   600 AM  3/25  TRAINED SPOTTER         

...PRINCE GEORGES COUNTY...
   1 SE OXON HILL         2.5   700 AM  3/25  CO-OP OBSERVER          
   BOWIE                  0.5   630 AM  3/25  BROADCAST MEDIA         

...ST. MARYS COUNTY...
   5 NE MECHANICSVILLE    1.0   700 AM  3/25  CO-OP OBSERVER          
   1 NE LEONARDTOWN       1.0   600 AM  3/25  COCORAHS                
   4 E HOLLYWOOD          0.2   700 AM  3/25  COCORAHS                

...WASHINGTON COUNTY...
   HAGERSTOWN             4.0   715 AM  3/25  TRAINED SPOTTER         
   2 SE SMITHSBURG        4.0   715 AM  3/25  PUBLIC                  
   1 WSW CAVETOWN         3.6   625 AM  3/25  TRAINED SPOTTER         
   5 S SHARPSBURG         3.4   700 AM  3/25  CO-OP OBSERVER
 Check out the complete forecast at www.wbaltv.com/weather.
John Collins
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Spring Snow Possible

March 24, 2013 - Leave a Response

We’re four days into Spring and just a week away from Easter. Yet here we are, still facing the possibility of snow. Fortunately, for those of you cringing at the mention of the cursed “s” word, you have climatology on your side. The higher sun angle of late March makes it that much more difficult for snow to accumulation.

That being said, some snow accumulation is possible, especially north and west of Baltimore City. This will definitely be one of those elevation-driven snows.

Below is a preliminary snow forecast, and this mostly applies to GRASSY SURFACES. Expect less snow on the roads, if any at all. Roads that are south and east of I-95 are especially likely to just remain wet.

Bottom line, proceed with caution tomorrow. Any bit of ice or slush on the roads could make things slippery.

Snow Forecast through 6 pm Monday:

AML_MD_SnowMap

Precipitation Timeline:

Sunday Evening: a light wintry mix possible, little to no accumulation expected.

Sunday Overnight: wintry mix changes over to wet snow, especially north and west of I-95. Trace accumulations possible, mostly on grassy surfaces.

Monday Morning: wet snow for most, mixed with rain south and east of I-95. Minor accumulation possible, mostly between 5 am and 10 am.

Monday Afternoon: wet snow mixed with rain, little to no additional accumulation expected.

Monday Evening: wintry mix tapers off from west to east.

Significant Snow Event Possible

March 4, 2013 - Leave a Response

It’s the best chance we’ve seen for significant snow around Baltimore in almost two years. A winter storm will take aim at the Mid-Atlantic midweek, with a combination of heavy rain, snow and strong winds. Potential impacts of this storm include travel delays, downed trees, and scattered power outages.

The National Weather Service has issued a Winter Storm Watch for Tuesday night through Wednesday night for the areas in blue. This includes the possibility of snow accumulations of 5 or more inches.

photo 2

We’ll have a better idea of possible accumulations starting tonight and especially by tomorrow. For now, here’s a general overview of the event:

photo 1

Tuesday Night

Rain or snow showers could begin as early as Tuesday evening, but the steadiest rain and snow should hold off until after midnight. A wintry mix is possible for areas south and east of I-95, while areas north and west have a better chance of getting some accumulation by sunrise.

Wednesday

Once the sun rises at 6:33 am on Wednesday, the temperatures will begin climbing. This will cause more rain to mix in with the snow, and will severely cut down on the chances for accumulation. During the day, as temperatures climb into the mid 30s, only the heaviest bands of snow will be capable of accumulating. Regardless of the type of precipitation your neighborhood gets, Wednesday will be a cold, wet, and windy day with slippery travel conditions.

Wedneday Afternoon and Evening

As the sun lowers on Wednesday afternoon and evening (sunset at 6:03 pm), the temperatures will begin falling. During this time, the storm will be moving to our east and intensifying. The winds will increase, and the precipitation will become heavier. Cold air will move in from west to east, causing the rain/snow line to shift east as well. This time period brings the best chance for accumulating snow across all of the Baltimore Metro Area, as well as the northern parts of the Eastern Shore and Delaware.

Thursday

The snow will taper off Thursday morning as temperatures fall into the low 30s degrees. Any snow already on the ground will continue to make travel difficult, and the roads will start to freeze over wherever it drops below 32 degrees. Strong winds will make the day feel raw with high temperatures only near 40. The winds will slowly decrease into Friday.

By Meteorologist Ava Marie

March Snowstorm? It’s Possible

March 3, 2013 - Leave a Response

Spring begins in less than 3 weeks, but winter refuses to step down early. A late season snowstorm is in the making, and could take aim at the Mid-Atlantic this week.

The storm in question is over the Northern Rockies right now.

low

From there, it will dive south into the Plains, before moving into Maryland late Tuesday. It will intensify as it moves off the coast, bringing concerns for strong winds and heavy snow on Wednesday.

snow possible

How much snow we get depends on the storm’s exact track, a detail that remains fuzzy at this point. The latest forecast models bring the low somewhere between southern Virginia and northern North Carolina. If you’re a snow lover, you’ll be pulling for the more northerly track.

Regardless of the track, this storm will have to work that much harder to accumulate, given how late it is in the season. The month of March means longer days and a higher sun angle, which helps to warm the roads and lower atmosphere. In order to get accumulation, the snow will have to fall faster than it can melt. Only the heaviest snow bands will be capable of this.

The WBAL TV weather team will keep you updated as this storm approaches. Until then, be mindful of this potential storm and its impacts. Any combination of snow and wind could hinder travel or cause power outages Tuesday night through Thursday.

This Is January?

January 30, 2013 - Leave a Response

7:00 pm UPDATE………

The threat of stormy weather remains. Until the final cold front goes through the area sometime after midnight, heavy rain and possibly a severe thunderstorm are possible.

SFC5pm

The National Weather Service has outlined areas for the potential for tornado producing thunderstorms. A TORNADO WATCH remains in effect for the area outlined in yellow on the National Weather Service map below until 2:00 AM Thursday.

watches

A FLASH FLOOD WARNING is also in effect for the western edge of the Tornado Watch area (red highlighted area). Some areas west of Baltimore have already received up to an inch of rain as estimated by radar up to 7:00pm.

John Collins

4:15 pm UPDATE……….

The approaching squall line “deflated” in a manner of speaking as it approached the metro area. The line of rain became more diffused and produced a period of moderate shower activity generating a quarter to half inch rainfall in one hour as estimated by National Weather Service radar. Parts of northern Virginia received up to one inch of rain before the squall line weakened. See the image below.

RadPreTot

The rainfall will continue across the area past sunset with the leading edge moving to the east and southeast.

John Collins

3:15pm UPDATE………..

A squall line is approaching the Baltimore metro area as of 3:15pm. Strong gusts and briefly heavy rain likely with passage. On the surface analysis below, note the temperature fall on the station reports to the west. Click on the image to enlarge it for detail.

Unknown

John Collins

Previous entry…….

It happens, but not that often. At midday, temperatures around Baltimore are in the upper 60s. Readings are running 10-15 degrees cooler near the Bay with wind coming off the cold water temperatures.

Wednesday’s record high is 72 (1914) and by noon the BWI temperature was 4 degrees short of the mark.

Image

At midday a squall line had developed in western Maryland. It is evident in the visible satellite image as bumpy clouds.

Image

The 10 AM surface analysis shows a complex system of fronts affecting Mid Atlantic weather. A strong southerly flow of air ahead of the initial cold front is responsible for the unseasonably warm temperatures.

Image

The complex system is also responsible for a very unstable air mass. The Storm Prediction Center has outlined an area along the East Coast, including the Mid Atlantic Region, as having a slight risk for severe weather Wednesday.

Check with http://wbaltv.com/weather for updates through the rest of the day.

John Collins

Winter Has Arrived

January 23, 2013 - Leave a Response

Cold air has finally settled in. Winter is here!

No records have been broken so far and none are threatened.

Tuesday morning’s low was 15 degrees and the record low is -7.

Wednesday morning’s hourly low was 13 and the record is 0.

Thursday and Friday morning record lows are 1 and 0 respectively. The forecast lows for those two days are around 15 degrees warmer.

True winter weather includes snow and there is some in the forecast.

A weak clipper tonight could dust up the area with minor accumulations of a relatively dry snow.

Image

The RPM forecast model above shows the scattered, light nature of the predicted snow for Thursday morning’s rush hour. Some fine tuning is possible so check back for updates. With the very cold temperatures, even a dry, light snow can cause slippery driving conditions.

Another system is expected Friday and Friday night. There will be a northern and southern component to this one. 

Image

The GFS forecast model above shows the next system approaching midday Friday. The storm looks more impressive than what is expected although it could likely produce the greater amount of snow of this week’s systems. Nonetheless, the track of this storm will probably allow relatively light accumulations of dry snow across the area. There is also a possibility that the two components of the storm will concentrate any snow to the north and south of the Baltimore area.

The upshot, Friday’s snow forecast will need some fine tuning so watch for updates on http://wbaltv.com/weather

John Collins

Braving the Mile High Weather, Tips from a Denver-Native

January 8, 2013 - Leave a Response

By Meteorologist Ava Marie

This weekend, some of you may be traveling to Denver to watch the Ravens play the Broncos at the Mile High Stadium. It’s called Mile High for a reason. Denver’s altitude is literally a mile above sea level. That’s 5,280 feet above Baltimore’s Inner Harbor, 4,563 feet above Westminster, and 1,920 feet above the highest peak in Garrett County.

Denver’s high altitude makes the air thinner, which means the air has less oxygen. This can cause some side effects in those who aren’t used to it. Symptoms of Altitude Sickness include headache, fatigue, dizziness and stomach illness. Dehydration only makes these symptoms worse. The air is naturally drier there, so your body loses more water to evaporation, from both your skin and your lungs.

Growing up in Denver, I was accustomed to the high altitude. Now that I’ve lived away for several years, I’ve completely lost all my tolerance. During my visits home, my lips instantly get chapped and my lungs burn anytime I go for a walk or run.

Water will be your best friend while you’re in Denver. Drink as much as you can, even when it’s cold. Fortunately, the tap water in Denver tastes fantastic, since it comes straight from the mountains. Be sure to wear sunscreen too, even though it’s winter. The thin air makes the sun shine all the brighter. Chapstick with sunscreen is a must as well.

Remember, Sports Authority Field at Mile High is an open stadium. So expect frigid temperatures for the game. Dress in warm, moisture-wicking layers, and remember to drink lots of water. And cut back on the alcohol. It dehydrates you and affects you much more quickly at higher altitudes.

denver

If you’ll be spending a few days in Denver, here’s a look at the extended forecast:

Thursday: Mostly Sunny, High 55, Low 23
Friday: Mostly Cloudy, Chance for Snow Showers, High 32, Low 8
Saturday: Partly Cloudy, High 20, Low 5
Sunday: Mostly Sunny, High 24, Low 7

As for things to do, if you arrive on Thursday while it’s warmer, I would highly recommend you check out some of Colorado’s natural outdoor attractions like Red Rocks Amphitheatre. Otherwise, as temperatures get colder, there are plenty of museums to visit. My favorite is the Denver Museum of Nature and Science. Another popular destination in Denver is 16th Street Mall, which is an outdoor mall, but there’s a free shuttle to take you to all the different restaurants and shops. LoDo is also a popular social scene, it’s located nearby Coors Field.

And lastly, I’ve been getting asked a lot of questions about this weekend’s game. I’ll admit, I’m in a tough position. After all, I was born and raised in Denver and most of my family still lives there. But I’m also very proud to call Baltimore my new home, proud of its talented sports teams and its dedicated fan base. So you may not agree with my answer, but I hope both teams play well and may the best team win. I do, however, have a friendly bet going with my Dad. I owe him a beer after the Broncos won their last game against the Ravens so it would be nice to win that beer back!

Snow Totals from Saturday

December 30, 2012 - Leave a Response

Saturday’s storm didn’t quite play out as expected, but it still brought accumulating snow to parts of Maryland for the third time in a week.

The late start to the snow cut down on accumulations for some, while others got exactly what was forecasted. Much of Carroll county saw 2-3″ of snow and northern parts of Baltimore and Harford counties picked up about 2″.

Most of the snow accumulations were seen northwest of I-95, but there were also some minor accumulations reported farther south. In Anne Arundel county, Odenton and Gibson Island both received 0.2″.

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Here’s a list of unofficial snow reports from the National Weather Service.

snow reports

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Snow on Saturday

December 28, 2012 - Leave a Response

Another potential snowmaker moves into the Mid-Atlantic on Saturday. This time, snow and ice could reach a little farther south and east.

Friday Night:
Snow showers begin to develop from the southwest after Midnight

Saturday Morning:
Snow becomes more widespread around 7 am for central and northern areas, with an icy mix southeast of I-95.

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Saturday Afternoon:
Snow in central Maryland begins to change over to sleet and ice, areas southeast of I-95 become mostly rain

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Expect most of the snow accumulation by 12 pm. The Baltimore Metro Area will see a general 1-3″ while the northern and western suburbs could get a little more. Trace amounts of ice or snow may accumulate southeast of the I-95 corridor. St. Mary’s county as well as the lower Eastern Shore counties may see some snow and ice early on, but this primarily be a rain event.

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Saturday Evening:
Wintry mix tapers off from southwest to northeast, roads remain slippery

Saturday Night:
Decreasing clouds, temperatures fall below freezing overnight, roads become icy

Sunday:
Icy spots on the roads, especially in the morning, partly cloudy skies around the state, isolated snow showers in Western Maryland and central Pennsylvania.

NOTE: it’s important to note that the computer models have really back off on snow accumulations for Saturday. While we are taking this into consideration, we must remember that the past two snowstorms outpeformed the models, meaning, we got more snow than what was expected. Only time will tell whether or not this is the case again.

Snow Could Reach Farther South Saturday

December 27, 2012 - Leave a Response

On the the heels of the pre and post Christmas snow events, looms another potential snow maker on Saturday. This time, parts of southern Maryland, the Eastern Shore and Delaware are included in the threat.

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Low pressure will track into the area from the southwest and will draw moisture into the Mid-Atlantic. This time, the cold air will be positioned further south, which means the infamous Mid-Atlantic “rain/snow” line will be further south, as well.

The precipitation will likely start sometime in the morning, as snow in the north and a wintry mix in the south. Some areas could see a few inches, with higher amounts in the northern counties.

As cold air continues to pour in from the northwest, the rain/snow line may sink all the way into southern Maryland and east into Delaware. While most of the accumulations will occur in northern areas of the region, we can’t rule out some snow or ice making it as far south as St. Mary’s, Somerset or Wicomico counties in Maryland.

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It’s important to note that not all of the forecast models are in agreement. The GFS keeps the accumulating snow north of DC and Baltimore. However, because the past two storms out-performed the models (they brought more snow than expected), we’re putting more emphasis on the models showing higher accumulations like the European model.

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Differing snow forecasts between the GFS (top) and European (bottom) computer models