Archive for April, 2012

The Rain Helped … A Little
April 23, 2012

Sunday’s wet weather helped the near term drought situation but did not fix it completely.The storm is moving north and may still add a little rain to the bucket into early Tuesday.

Source: Naval Research Lab, Monterey, CA

At BWI-Marshal, Sunday’s rain totaled 1.33 inches. April’s rain total now stands at 1.6 inches, .75 inches short of normal. For 2012, the precipitation total is 8.32 inches, 3.38 inches below normal.

Sunday’s rain event was only the sixth this year to produce a quarter inch or more of precipitation in a 24 hour period.

The precipitation information below is from the National Weather Service.

PUBLIC INFORMATION STATEMENT
SPOTTER REPORTS
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1246 PM EDT MON APR 23 2012

THE FOLLOWING ARE UNOFFICIAL OBSERVATIONS TAKEN DURING THE PAST 41
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

MARYLAND

...ALLEGANY COUNTY...
   2 NNW FROSTBURG        4.5   946 AM  4/23  TRAINED SPOTTER
   FROSTBURG              2.2   700 AM  4/23  CO-OP OBSERVER
   ECKHART MINES          1.0   940 AM  4/23  TRAINED SPOTTER

WEST VIRGINIA

...GRANT COUNTY...
   BAYARD                 3.0  1127 AM  4/23  CO-OP OBSERVER

...HAMPSHIRE COUNTY...
   1 SW ROMNEY              T   700 AM  4/23  CO-OP OBSERVER

...HARDY COUNTY...
   3 E MCNEILL            1.6   700 AM  4/23  MESONET
   2 SE LOST RIVER          T   800 AM  4/23  CO-OP OBSERVER

...MINERAL COUNTY...
   1 E HARTMANSVILLE      2.0   856 AM  4/23  PUBLIC

...PENDLETON COUNTY...
   6 WSW CHERRY GROVE     1.0   851 AM  4/23  TRAINED SPOTTER

********************STORM TOTAL RAINFALL********************

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

DISTRICT OF COLUMBIA

...DISTRICT OF COLUMBIA...
   5 NW WASHINGTON       1.78   900 AM  4/23  COCORAHS
   2 WNW WASHINGTON      1.69   700 AM  4/23  COCORAHS
   DALECARLIA RESERVOIR  1.60   810 AM  4/23  CO-OP OBSERVER
   NATIONAL ARBORETUM    1.52   950 AM  4/23  CO-OP OBSERVER

MARYLAND

...ALLEGANY COUNTY...
   1 S CUMBERLAND        0.58   735 AM  4/23  CO-OP OBSERVER
   1 SSE CRESAPTOWN-BEL  0.50   700 AM  4/23  COCORAHS
   FROSTBURG             0.35   655 AM  4/23  CO-OP OBSERVER

...ANNE ARUNDEL COUNTY...
   1 WSW ODENTON         1.56   700 AM  4/23  COCORAHS
   1 SE DEALE            1.53   700 AM  4/23  COCORAHS
   3 E LAUREL            1.53   800 AM  4/23  COCORAHS
   3 ESE PASADENA        1.48   800 AM  4/23  COCORAHS
   1 SE PASADENA         1.40   700 AM  4/23  COCORAHS
   1 N BALT-WASH INTL A  1.39   800 AM  4/23  ASOS
   2 W SEVERN            1.38   700 AM  4/23  COCORAHS
   1 SW RIVIERA BEACH    1.36   545 AM  4/23  CO-OP OBSERVER
   4 W ANNAPOLIS         1.34   600 AM  4/23  COCORAHS
   2 SSW SEVERN          1.31   700 AM  4/23  COCORAHS
   2 NNE CROFTON         1.31   700 AM  4/23  COCORAHS
   3 SSW SOUTH GATE      1.27   800 AM  4/23  COCORAHS

...ANZ533...
   NORTH BEACH           1.35   730 AM  4/23  CO-OP OBSERVER

...BALTIMORE COUNTY...
   1 ESE WOODLAWN        2.27   800 AM  4/23  BALT CITY ALERT
   2 WNW CATONSVILLE     2.05   700 AM  4/23  COCORAHS
   1 SW TOWSON           1.91   730 AM  4/23  COCORAHS
   1 SW LONG GREEN       1.79   700 AM  4/23  COCORAHS
   1 E KINGSVILLE        1.74   700 AM  4/23  COCORAHS
   1 SSW RUXTON          1.69   800 AM  4/23  BALT CITY ALERT
   1 NNE ROSEDALE        1.67   720 AM  4/23  TRAINED SPOTTER
   1 WSW PIKESVILLE      1.66   800 AM  4/23  BALT CITY ALERT
   2 WSW SPARKS          1.65   800 AM  4/23  BALT CITY ALERT
   4 N COCKEYSVILLE      1.55   900 AM  4/23  COCORAHS
   3 WNW BALDWIN         1.53   800 AM  4/23  COCORAHS
   NE REISTERSTOWN       1.35   700 AM  4/23  COCORAHS
   1 NW REISTERSTOWN     1.08   745 AM  4/23  CO-OP OBSERVER
   2 S ROSEDALE          1.07   800 AM  4/23  MEMA

...BALTIMORE CITY...
   PIMLICO               2.60  1100 PM  4/22  2 DAY TOTAL
   1 E PIMLICO           1.65   800 AM  4/23  BALT CITY ALERT
   1 SSE DOWNTOWN BALTI  1.34   800 AM  4/23  ASOS

...CALVERT COUNTY...
   2 WNW HUNTINGTOWN     2.00   941 PM  4/22  TRAINED SPOTTER
   1 W PRINCE FREDERICK  1.86   700 AM  4/23  COCORAHS
   SOLOMONS              1.50   931 AM  4/23  CO-OP OBSERVER
   2 SW CHESAPEAKE BEAC  0.18   700 AM  4/22  COCORAHS
   2 NNW DUNKIRK         0.12   630 AM  4/22  COCORAHS
   6 E MARLTON           0.11   800 AM  4/22  COCORAHS

...CARROLL COUNTY...
   3 NE TANEYTOWN        1.96   700 AM  4/23  COCORAHS
   4 NE TANEYTOWN        1.90   700 AM  4/23  COCORAHS
   2 SE ELDERSBURG       1.71   659 AM  4/23  COCORAHS
   3 NE SYKESVILLE       1.02   500 AM  4/23  COCORAHS
   SE MOUNT AIRY         0.17  1130 AM  4/22  COCORAHS
   3 NW SYKESVILLE       0.01   800 AM  4/22  COCORAHS

...CHARLES COUNTY...
   4 SSE WALDORF         1.50   645 AM  4/23  COCORAHS
   3 S WALDORF           1.34   800 AM  4/23  COCORAHS
   2 ESE BRYANS ROAD     1.32   700 AM  4/23  COCORAHS
   3 WNW LA PLATA        1.23   630 AM  4/23  COCORAHS
   1 S PORT TOBACCO VIL  1.22   700 AM  4/22  COCORAHS
   1 SW BRYANS ROAD      0.22   630 AM  4/23  COCORAHS

...FREDERICK COUNTY...
   3 NW FREDERICK        1.74   720 AM  4/23  COCORAHS
   2 ESE MIDDLETOWN      1.74   700 AM  4/23  COCORAHS
   2 SE EMMITSBURG       1.64   650 AM  4/23  CO-OP OBSERVER
   1 E WALKERSVILLE      1.64   700 AM  4/23  COCORAHS
   3 S FORT RITCHIE      1.50   800 AM  4/23  USFS RAWS
   4 WNW THURMONT        1.40  1008 AM  4/23  CO-OP OBSERVER
   3 NNW NEW MARKET      1.35   530 AM  4/23  COCORAHS
   1 SSW MONROVIA        1.31   700 AM  4/23  COCORAHS
   1 SSE THURMONT        1.30   700 AM  4/23  COCORAHS
   4 SSW FREDERICK       1.27   600 AM  4/23  COCORAHS
   5 WSW NEW MARKET      0.27   700 AM  4/22  COCORAHS

...HARFORD COUNTY...
   2 SSE FOREST HILL     2.25   700 AM  4/23  COCORAHS
   CONOWINGO DAM         2.21   844 AM  4/23  CO-OP OBSERVER
   1 N JARRETTSVILLE     1.98   700 AM  4/23  COCORAHS
   3 NNE KINGSVILLE      1.83   700 AM  4/23  COCORAHS
   SE WHITEFORD          1.38   800 AM  4/23  COCORAHS
   2 W BEL AIR           0.25   600 AM  4/22  COCORAHS

...HOWARD COUNTY...
   2 W COLUMBIA          1.89   700 AM  4/23  COCORAHS
   1 W OELLA             1.88   800 AM  4/23  HOWARD CO AFWS
   1 SE CLARKSVILLE      1.86   800 AM  4/23  COCORAHS
   2 N COLUMBIA          1.80   700 AM  4/23  COCORAHS
   3 NW COLUMBIA         1.76   730 AM  4/23  COCORAHS
   2 W ELKRIDGE          1.68   700 AM  4/23  COCORAHS
   1 E COLUMBIA          1.58   700 AM  4/23  COCORAHS
   2 ESE NORTH LAUREL    1.43   700 AM  4/23  COCORAHS
   1 SE MARRIOTTSVILLE   1.22   800 AM  4/23  COCORAHS
   2 N ELLICOTT CITY     1.19   700 AM  4/23  COCORAHS
   2 SSE SYKESVILLE      1.18   700 AM  4/23  COCORAHS
   1 WSW ELLICOTT CITY   0.30   750 AM  4/22  COCORAHS
   3 SE SYKESVILLE       0.07   600 AM  4/22  COCORAHS
   2 SE WOODBINE         0.01   700 AM  4/22  COCORAHS

...MONTGOMERY COUNTY...
   1 ESE NORBECK         1.87   700 AM  4/23  COCORAHS
   1 N WHITE OAK         1.73   700 AM  4/23  COCORAHS
   1 ESE ROSSMOOR        1.68   700 AM  4/23  COCORAHS
   1 NNW TAKOMA PARK     1.62   700 AM  4/23  COCORAHS
   2 W COLESVILLE        1.60   700 AM  4/23  COCORAHS
   1 N SILVER SPRING     1.56   830 AM  4/23  COCORAHS
   BRIGHTON DAM          1.52   830 AM  4/23  CO-OP OBSERVER
   2 SSE SILVER SPRING   1.45   600 AM  4/23  COCORAHS
   SE POOLESVILLE        1.45   800 AM  4/23  COCORAHS
   1 SE ROCKVILLE        1.44   708 AM  4/23  COCORAHS
   7 N SILVER SPRING     1.32   700 AM  4/23  COCORAHS
   2 WNW BETHESDA        1.26   700 AM  4/23  COCORAHS
   3 NE GAITHERSBURG     1.24   700 AM  4/23  COCORAHS
   1 WNW BOYDS           1.20   702 AM  4/23  COCORAHS
   1 ENE GAITHERSBURG    1.19  1110 AM  4/23  TRAINED SPOTTER
   3 SSW DAMASCUS        1.15   705 AM  4/23  CO-OP OBSERVER
   5 NNE GERMANTOWN      1.15   700 AM  4/23  COCORAHS
   3 SW GAITHERSBURG     1.10   700 AM  4/23  COCORAHS
   2 ESE MONTGOMERY VIL  0.99   800 AM  4/23  AWOS
   W KENSINGTON          0.19   900 AM  4/22  COCORAHS
   1 NNW POTOMAC         0.15   700 AM  4/22  COCORAHS
   1 NE WHEATON-GLENMON  0.10   700 AM  4/22  COCORAHS

...PRINCE GEORGES COUNTY...
   3 WNW BOWIE           2.49  1056 AM  4/22  COCORAHS
   2 SE FOREST HEIGHTS   1.80   700 AM  4/23  COCORAHS
   3 SSE LARGO           1.65   800 AM  4/23  PG COUNTY AFWS
   2 NNW CAMP SPRINGS    1.61   700 AM  4/23  COCORAHS
   1 SE OXON HILL        1.59   710 AM  4/23  CO-OP OBSERVER
   1 W OXON HILL         1.59   700 AM  4/23  COCORAHS
   1 W FORESTVILLE       1.55   700 AM  4/23  COCORAHS
   2 SE SUITLAND         1.54   730 AM  4/23  COCORAHS
   2 S LAUREL            1.54   700 AM  4/23  COCORAHS
   4 SE UPPER MARLBORO   1.51   800 AM  4/23  JUG BAY MET STN
   2 WSW FORT WASHINGTO  1.48   700 AM  4/23  COCORAHS
   ESE CAMP SPRINGS      1.48   700 AM  4/23  COCORAHS
   1 E BOWIE             1.41   530 AM  4/23  COCORAHS
   7 ESE BRANDYWINE      1.37   700 AM  4/23  COCORAHS
   1 E MORNINGSIDE       1.37   800 AM  4/23  AWOS
   1 NE COLLEGE PARK     1.28   800 AM  4/23  COCORAHS

...ST. MARYS COUNTY...
   SW PARK HALL          3.41   700 AM  4/23  COCORAHS
   2 ENE PATUXENT RIVER  3.15   800 AM  4/23  AWOS
   2 W SAINT INIGOES     2.89   800 AM  4/23  AWOS
   SSE TALL TIMBERS      2.82   800 AM  4/23  COCORAHS
   1 NE LEONARDTOWN      2.82   600 AM  4/23  COCORAHS
   4 E HOLLYWOOD         2.78   700 AM  4/23  COCORAHS
   2 W CALIFORNIA        2.72   614 AM  4/23  TRAINED SPOTTER
   1 N RIDGE             2.25   700 AM  4/23  COCORAHS
   5 NE MECHANICSVILLE   1.68   905 AM  4/23  CO-OP OBSERVER
   4 ENE CHARLOTTE HALL  1.68   700 AM  4/23  COCORAHS
   1 NNW COLTONS POINT   0.78   900 AM  4/22  COCORAHS

...WASHINGTON COUNTY...
   1 WSW CAVETOWN        2.19   600 AM  4/23  TRAINED SPOTTER
   2 NNE LEITERSBURG     1.91   800 AM  4/23  USGS RAIN GAUGE
   3 NNE SMITHSBURG      1.86   700 AM  4/23  COCORAHS
   5 S SHARPSBURG        1.81   725 AM  4/23  CO-OP OBSERVER
   1 NNW SHARPSBURG      1.64   800 AM  4/23  USFS RAWS
   WILLIAMSPORT          1.58   640 AM  4/23  CO-OP OBSERVER
   1 NE MAUGANSVILLE     1.55   800 AM  4/23  ASOS
   2 ESE WILLIAMSPORT    1.10   700 AM  4/23  COCORAHS
PUBLIC INFORMATION STATEMENT
SPOTTER REPORTS
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
100 PM EDT MON APR 23 2012

THE FOLLOWING ARE UNOFFICIAL OBSERVATIONS TAKEN DURING THE PAST 20
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/PHI
**********************24 HOUR RAINFALL**********************

LOCATION              24 HOUR     TIME/DATE   COMMENTS
                     RAINFALL           OF
                     /INCHES/   MEASUREMENT

DELAWARE

...KENT COUNTY...
   3 SSE SMYRNA          2.13   700 AM  4/23  COCORAHS
   6 WNW DOVER           1.96   700 AM  4/23  COCORAHS
   2 NW MAGNOLIA         1.18   800 AM  4/23  COCORAHS
   4 NE FELTON           1.03   800 AM  4/23  COCORAHS

...NEW CASTLE COUNTY...
   4 E NEWARK            2.20   600 AM  4/23  COCORAHS
   4 SSW NEWARK          2.16   700 AM  4/23  COCORAHS
   2 S NEWARK            2.13   800 AM  4/23  COCORAHS
   2 SE GLASGOW          2.11   700 AM  4/23  COCORAHS
   1 SSE MIDDLETOWN      2.08   700 AM  4/23  COCORAHS
   6 N MIDDLETOWN        2.05   700 AM  4/23  COCORAHS
   2 WNW NEWPORT         1.98   700 AM  4/23  COCORAHS

...SUSSEX COUNTY...
   4 E DELMAR            2.05   700 AM  4/23  COCORAHS
   6 W GEORGETOWN        1.84   800 AM  4/23  COCORAHS
   3 SE GREENWOOD        1.65   700 AM  4/23  COCORAHS

MARYLAND

...CAROLINE COUNTY...
   6 WSW DENTON          2.00   700 AM  4/23  COCORAHS
   1 ENE GREENSBORO      1.80   600 AM  4/23  COCORAHS

...CECIL COUNTY...
   7 NNW ELKTON          2.39   600 AM  4/23  COCORAHS
   4 NNW ELKTON          2.19   700 AM  4/23  COCORAHS

...QUEEN ANNES COUNTY...
   3 S QUEENSTOWN        1.97   800 AM  4/23  COCORAHS

...TALBOT COUNTY...
   1 SE ST. MICHAELS     2.08   800 AM  4/23  COCORAHS
   2 SE EASTON           2.01   700 AM  4/23  COCORAHS
   NNE BELLEVUE          1.93   830 AM  4/23  COCORAHS
   3 NNE EASTON          1.89   800 AM  4/23  COCORAHS
   1 NNW EASTON          1.87   645 AM  4/23  COCORAHS
   4 NE TRAPPE           1.85   800 AM  4/23  COCORAHS
   1 SSW EASTON          1.76   700 AM  4/23  COCORAHS
   1 SW EASTON           1.66   800 AM  4/23  COCORAHS
 John Collins
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Area Needs More Rain
April 18, 2012

As nice as the weather has been this spring, we really need some rain!

April (through the 17th) is running 1.79 inches short.

March-April 17 is running 3.93 inches short.

January – April 17 is running 4.92 inches short.

One of several forecast models (map below) shows that today’s rainfall will likely be inconsequential with only a tenth to perhaps as much as three tenths of an inch from this system. The more significant rains will be to the southwest.

Rainfall Estimate for Northeast U.S., 18 April, 2012. Source: WSI/RPM Forecast Model

A more significant storm is expected over the weekend.

John Collins

Big Plains Storms Saturday & Sunday
April 15, 2012

The Plains states were hit with a major tornado outbreak Saturday.

NOAA / NASA Satellite Image Early Sunday (4/15/12)

Storms stretched from Texas to Iowa.

Source: National Weather Service

The map above shows where the severe weather reports have been concentrated. Kansas seems to have been hardest hit.

Source: National Weather Service

The image above shows one NWS radar image from Wichita, KS, just before midnight Central Time. I have annotated where the signature is for a tornado in this particular storm cell. The red and green shades indicate winds moving toward and away from the radar. The red/green couplet at the tip of the arrow indicates a possible tornado with wind rotation on the southwest flank of a storm cell.

Atmospheric conditions may provide the right conditions for another round of storms on Sunday, just to the east of Saturday’s storms. Parts of Iowa, Wisconsin and Minnesota may be especially hard hit.

John Collins

Where to Go During a Tornado
April 10, 2012

April 8-14, 2012 marks Maryland’s Severe Weather Awareness Week.  On Wednesday, April 11, 2012, there will be a statewide tornado drill.  A message will be sent over the NOAA Weather Radio at 9:45 am, and an all clear message will follow at 10 am.  This is a great opportunity for schools, businesses and residents to test their emergency plan for tornadoes.

Where should you seek shelter from a tornado? 

The answer depends on where you are.  Use these safety tips from the National Weather Service to develop your own emergency tornado plan:

In a house with a basement: Go to the basement, stay away from any windows, and get under some kind of sturdy protection (like a heavy table) or cover yourself with a mattress of sleeping bag.

In a house or apartment without a basement: Go to the lowest floor and take shelter away from windows in a small interior room (like a bathroom or a closet), under a stairwell or in an interior hallway. Crouch as low as possible to the floor, facing down, and cover your head with your hands.  A bath tub may offer partial protection.  If possible, cover yourself with thick padding (mattress or blankets) to protect against falling debris. If you live above the ground floor of an apartment building, get to know your first floor neighbors in case you need to take shelter with them.

In a high-rise building: Go directly to an interior, windowless area in the center of the building on the lowest floor possible.  Crouch down and cover your head.  Interior stairwells are usually good places to take shelter.  Stay off the elevators.

In a mobile home: Get out!  Mobile homes offer very little protection during a tornado.  Go to your community’s storm shelter or to a nearby permanent structure.

At school: Follow the drill!  Go to the interior hall or room in an orderly fashion.  Crouch low, head down, and protect the back of your head with your arms.  Stay away from windows and large open rooms like gyms and auditoriums.

In a car or truck: Vehicles are very dangerous places to be during a tornado.  If the tornado is far away, you may be able to drive out of its path by driving perpendicular to its path.  Otherwise, safely park your vehicle and then seek shelter in a nearby building.  If no shelter is available, exit your vehicle and lie down in a nearby ditch.  Avoid seeking shelter under bridges, which create deadly traffic hazards while offering very little protection from flying debris.

While Outdoors: If there is no shelter nearby, lie flat and face-down on low ground, protecting the back of your head with your arms.  Stay as far as you can away from trees, vehicles and other large objects.

For more tornado  safety information, visit: http://www.spc.noaa.gov/faq/tornado/safety.html