Archive for December, 2009

One of the Wettest
December 26, 2009

With another inch of rain today, we set a record for the wettest December in Baltimore and enter the final week of 2009 inching up the list of all-time wettest years in Baltimore.  Since official records began back in 1871, only five years have been wetter than 2009.  Here are the soggy details:

December 2009: 8.06″ of precipitation…old record:  7.44″ in 1969

Wettest Years in Baltimore:

2003:  62.66″

1889:  62.35″

1979:  58.98″

1996:  58.31″

1952:  56.57″

2009:  55.57″

It is interesting to note, and probably not just a coincidence, that big snows fell in most of these soggy years; the biggest all-time snowstorm in February of 2003, the President’s Day blizzard of 1979, the blizzard in January of 1996 and the big snow just last week.

Tom Tasselmyer
(Original post edited on Jan. 3, 2010 to include final December and 2009 precipitation numbers)

Holiday Greetings
December 25, 2009

Christmas Snow
December 24, 2009

As has been mentioned in previous entries, a white Christmas in Baltimore is a fairly rare event.

It looks like to approaching storm will be mostly rain in this area and that will wash away much of the snow we received last weekend. There may be a brief period of freezing drizzle or light freezing rain Christ morning but that won’t be much consolation for those who want a white Christmas.

John Collins

Christmas Storm Shaping Up
December 23, 2009

Wednesday has turned out to be a beautiful day. Despite the cold air and snow on the ground, the sunshine has made for pleasant conditions.

Afternoon visible satellite imagery shows that the snow from last weekend still covers the area.

A new storm is developing, just in time for Christmas.

A wider satellite view shows the storm in the Plains. Forecast models indicate that the storm center will stay well to the west of the Atlantic coast.

Moisture from the storm will be pushed eastward though and make it to the Atlantic coast by Christmas day. This moisture will be accompanied by an influx of warmer air. The complicating factor is that cold air will be in place at the surface when all of this starts to happen on Friday morning. This cold surface air will be a little slow to move out because it will be held in place by high pressure and resultant easterly winds as well as the chilling effect of the snow cover.

The computer model above shows predicted conditions in the mid levels of the atmosphere Friday morning. There will be plenty of moisture coming up the coast and the  0 degree celsius line (freezing line) west of Baltimore. The moisture will be rain at the mid levels but at it falls into that colder surface layer of air it is expected to result in freezing rain.

The surface forecast map for Friday shows the storm to the west and the surface high pressure area with its’ cold air reaching into the Mid Atlantic region from New England.

At some point on Friday the shallow layer of cold air will be pushed out of the area and the freezing rain will become just rain. The problem is the length of time that the transition will take. A best early guess is some time by early afternoon but until then freezing rain will likely cause some icy conditions.

The map above indicates that the rainfall amounts could be substantial and when combined with melting snow, some flooding may result.

The upshot is that what may start as a white Christmas will devolve into something slippery and a bit more dismal. It looks like we’ll just have to make the best of it.

Be watching for updates as Christmas draws closer.

John Collins

Hi Resolution Satellite Snow Image
December 21, 2009

NASA has released a high resolution satellite image of the snow cover from this weekends East Coast storm.

The Mid-Atlantic states were completely white on Sunday, December 20, 2009, in the wake of a record-breaking snow storm. The storm deposited between 12 and 30 inches of snow in Virginia, Maryland, and Washington, D.C. on December 19, according to the National Weather Service. For many locations, the snowfall totals broke records for the most snow to fall in a single December day.

The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aquasatellite captured this view of the Chesapeake Bay region as the clouds were clearing on December 20. The snow highlights the courses of the Potomac and Susquehanna Rivers from the Appalachian Mountains to the Chesapeake Bay. The ridges and valleys of the Appalachian Mountains are similarly highlighted. The forested peaks are darker than the snow-covered valleys.

The massive snow storm was a Nor’easter, a powerful storm characterized by a strong low-pressure center that forms in the Gulf of Mexico or the Atlantic Ocean and moves northward up the Eastern seaboard. In the Northern Hemisphere, winds flow in toward the center of a low-pressure area in a counter-clockwise spiral, which means that as the storm heads north, the leading winds come in off the ocean from the northeast.

The text above was provided by NASA. A listing of snow depths from around the area are on the preceding blog entry.

John Collins

Big Snow … Final Numbers
December 21, 2009

It’s Monday, the sun is out and it is a beautiful scene. The area is still in a storm recovery mode though.

The late morning satellite image is mostly cloud free east of the mountains. The only exception is some low cloudiness in Virginia west of the Potomac River. The rest of the gray shading is the extensive snow cover from North Carolina into New England. It is quite asy to spot the river valleys cut through the snow cover.

The biggest snow accumulations were measured along an east-west line between Baltimore and Washington DC. In the metro areas, Bethesda and Columbia had the highest totals with 24 and 23 inches respectively.

The graphic above is produced by the National Weather Service and is an analysis of the snow cover as of Monday morning.

The list below includes the final numbers for snow reports gathered by the National Weather Service and its’ observer network.

John Collins

PUBLIC INFORMATION STATEMENT
SPOTTER REPORTS
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
842 AM EST MON DEC 21 2009

THE FOLLOWING ARE UNOFFICIAL OBSERVATIONS TAKEN DURING THE PAST 40 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...
   THE MALL              16.0   615 PM 12/19
   AMERICAN UNIVERSITY   16.0   515 PM 12/19

MARYLAND

...ALLEGANY COUNTY...
   LONACONING            17.4   412 AM 12/20
   NORTH BRANCH 1 N      17.0  1015 PM 12/19
   ECKHART MINES         16.0   100 PM 12/20
   FROSTBURG             15.0   216 PM 12/20
   CUMBERLAND 1 SSE      14.5   702 PM 12/19
   FROSTBURG 2 NNW       14.0   800 AM 12/20

...ANNE ARUNDEL COUNTY...
   GLEN BURNIE           22.5   915 PM 12/19
   OWINGS 1 NNE          21.0   712 AM 12/20
   BALT-WASH INTL ARPT   21.0  1200 AM 12/20
   CROFTON               21.0  1030 PM 12/19
   ANNAPOLIS             20.8   700 PM 12/19
   GREEN HAVEN 1 NE      19.9   424 AM 12/20
   BELVEDERE HEIGHTS     19.5   500 PM 12/19
   GAMBRILLS 1 NW        18.8   752 AM 12/20
   MILLERSVILLE          18.0   815 PM 12/19
   PAROLE 1 NNW          17.0   630 PM 12/19
   RIVA 2 NW             15.0   933 PM 12/19

...BALTIMORE COUNTY...
   CATONSVILLE           20.5   847 PM 12/19
   GUNPOWDER 1 WSW       20.5   933 PM 12/19
   GARRISON 1 SE         20.4  1025 PM 12/19
   ESSEX                 20.0  1020 PM 12/19
   PARKTON               20.0   655 PM 12/19
   DUNDALK 1 SSW         19.5   700 PM 12/19
   REISTERSTOWN          19.0   945 PM 12/19
   MONKTON               19.0   915 PM 12/19
   HAMPTON 1 W           18.0   618 PM 12/19
   HUNT VALLEY           17.8  1005 PM 12/19
   JACKSONVILLE          17.0   900 PM 12/19
   RANDALLSTOWN 1 NW     16.5   715 PM 12/19
   PARKVILLE             16.0   830 AM 12/20
   PARKVILLE 1 ENE       12.0   830 PM 12/19

...BALTIMORE CITY COUNTY...
   CARROLL 2 W           17.0  1115 PM 12/19

...CALVERT COUNTY...
   DARES BEACH 3 NW      19.0   800 PM 12/19
   HUNTINGTOWN           18.8  1050 PM 12/19
   NORTH BEACH           10.0   915 AM 12/20

...CARROLL COUNTY...
   LINEBORO 3 WSW        20.0   933 PM 12/19
   MANCHESTER 6 NW       19.0   516 PM 12/19
   MILLERS               19.0  1100 PM 12/19
   WESTMINSTER 1 N       18.8   729 PM 12/19
   LINEBORO 2 E          18.5   800 PM 12/19
   TANEYTOWN 1 NE        17.5   520 PM 12/19
   ELDERSBURG 2 NW       17.0   548 PM 12/19

...CHARLES COUNTY...
   BRYANS ROAD 2 ESE     21.2  1000 PM 12/19
   WALDORF               15.5   500 PM 12/19
   WALDORF 4 SE          13.5   600 PM 12/19
   DENTSVILLE 1 SW       13.5  1050 PM 12/19

...FREDERICK COUNTY...
   LIBERTYTOWN 2 N       22.5   931 PM 12/19
   NEW MARKET 2 NW       22.0   900 PM 12/19
   FREDERICK 1 ESE       22.0  1100 PM 12/19
   MIDDLETOWN            21.0   930 PM 12/19
   JEFFERSON 2 NE        20.2   931 PM 12/19
   NEW MARKET            20.0   600 PM 12/19
   WALKERSVILLE          19.0   743 PM 12/19
   FREDERICK 3 SSW       19.0   519 PM 12/19
   POINT OF ROCKS        19.0   930 PM 12/19
   FREDERICK             19.0   528 PM 12/19
   EMMITSBURG            17.5   545 PM 12/19

...HARFORD COUNTY...
   SCARBORO 2 E          20.5   720 AM 12/20
   EDGEWOOD              19.0   800 PM 12/19
   FALLSTON 1 N          18.0   931 PM 12/19
   PYLESVILLE            17.5   520 PM 12/19
   BEL AIR 1 NE          16.5   840 PM 12/19

...HOWARD COUNTY...
   COLUMBIA              23.0  1055 PM 12/19
   COLUMBIA 2 N          22.9   950 PM 12/19
   SIMPSONVILLE 1 SSE    22.9  1200 AM 12/20
   ELKRIDGE 2 W          21.0   930 PM 12/19
   GLENELG 1 ENE         19.5  1050 PM 12/19
   SAVAGE 1 WSW          19.0  1128 PM 12/19
   HANOVER               19.0   945 PM 12/19
   JESSUP 1 WNW          17.5  1057 AM 12/20
   SAVAGE 1 N            17.0   900 PM 12/19
   ELLICOTT CITY 1 ESE   16.8   900 PM 12/19
   WOODSTOCK             16.0   500 PM 12/19

...MONTGOMERY COUNTY...
   BETHESDA              24.0   500 AM 12/20
   OLNEY                 23.3  1030 PM 12/19
   DERWOOD               23.0   900 PM 12/19
   GLEN ECHO             22.8   930 PM 12/19
   OLNEY 1 S             22.5   800 PM 12/19
   GAITHERSBURG 1 NW     22.0   632 PM 12/19
   GERMANTOWN            22.0   650 PM 12/19
   NORBECK               21.3  1200 AM 12/20
   NORBECK 1 SE          21.0  1000 PM 12/19
   GLENMONT              21.0   737 PM 12/19
   COLESVILLE            21.0   900 PM 12/19
   ROCKVILLE 2 NW        21.0   932 PM 12/19
   POTOMAC 3 ENE         20.6  1100 PM 12/19
   DAMASCUS              20.3   918 PM 12/19
   ROCKVILLE 1 SSW       20.0   800 PM 12/19
   BETHESDA 2 NNW        20.0   743 PM 12/19
   FAIRLAND 1 ESE        20.0   815 PM 12/19
   NORTH POTOMAC 1 E     19.0  1000 PM 12/19
   DARNESTOWN 1 SW       19.0   815 PM 12/19
   POOLESVILLE           19.0  1230 AM 12/20
   SILVER SPRING 1 ESE   18.0  1000 PM 12/19
   DAMASCUS 3 SW         17.5   511 PM 12/19
   ROCKVILLE 2 SSW       17.0   549 PM 12/19
   ROCKVILLE 2 SW        16.5   524 PM 12/19
   GERMANTOWN 3 E        16.5   700 PM 12/19

...PRINCE GEORGES COUNTY...
   LAUREL                19.1  1000 PM 12/19
   BOWIE 2 NNW           19.0   921 PM 12/19
   BOWIE                 18.8   802 PM 12/19
   BOWIE 3 NNW           18.5   630 PM 12/19
   HYATTSVILLE           18.0   812 PM 12/19
   GLENN DALE 3 ENE      18.0  1050 PM 12/19
   FOREST HEIGHTS 1 SSE  17.0   720 PM 12/19
   GREENBELT 1 NNE       16.0   851 AM 12/20
   BELTSVILLE 1 SSW      15.0  1110 PM 12/19
   GREENBELT             14.8   548 PM 12/19
   ADELPHI 1 ENE         13.8  1000 PM 12/19

...ST. MARYS COUNTY...
   HOLLYWOOD 1 NNE       15.8   300 AM 12/20
   HOLLYWOOD             14.5   950 PM 12/19
   HILLVILLE 1 ESE       13.0   505 PM 12/19
   RIDGE                  9.7   641 AM 12/20

...WASHINGTON COUNTY...
   SMITHSBURG            21.0   742 PM 12/19
   HANCOCK               16.0   630 PM 12/19
   HALFWAY 2 ENE         15.5   500 PM 12/19
PUBLIC INFORMATION STATEMENT
SPOTTER REPORTS
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1233 PM EST SUN DEC 20 2009

THE FOLLOWING ARE UNOFFICIAL OBSERVATIONS TAKEN DURING THE PAST 16 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

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

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

DELAWARE

...KENT COUNTY...
   DOVER                 18.0   925 AM 12/20
   FELTON                13.0   945 AM 12/20

...NEW CASTLE COUNTY...
   BEAR                  17.0   715 AM 12/20
   WILMINGTON            17.0   100 AM 12/20   NEW CASTLE COUNTY APT
   CLAYMONT              16.3  1213 PM 12/20
   NEWARK                16.1  1001 AM 12/20
   WILMINGTON            15.0   944 AM 12/20   CITY
   NEWPORT               13.0   945 AM 12/20

...SUSSEX COUNTY...
   SEAFORD                7.0   946 AM 12/20
   FRANKFORD              4.1  1205 AM 12/20

MARYLAND

...CAROLINE COUNTY...
   GREENSBORO            17.5  1002 AM 12/20

...CECIL COUNTY...
   COLORA                17.5  1141 AM 12/20

...KENT COUNTY...
   MILLINGTON            22.0  1150 AM 12/20

...QUEEN ANNE`S COUNTY...
   CENTREVILLE           13.0  1155 AM 12/20

...TALBOT COUNTY...
   EASTON                12.0   947 AM 12/20
   SAINT MICHAELS        10.5   948 AM 12/20
PUBLIC INFORMATION STATEMENT...STORM SUMMARY
SPOTTER REPORTS
NATIONAL WEATHER SERVICE WAKEFIELD VA
1007 AM EST MON DEC 21 2009

THE FOLLOWING ARE UNOFFICIAL OBSERVATIONS TAKEN DURING THE PAST 24
HOUR FOR THE STORM THAT HAS BEEN AFFECTING OUR REGION.  APPRECIATION IS
EXTENDE 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             14.0   240 PM 12/20
   SEWARD                12.0   240 PM 12/20
   ELDORADO               9.0   241 PM 12/20
   VIENNA                 7.0   700 AM 12/20

...WICOMICO COUNTY...
   DISTRICT 9             4.0   700 AM 12/20   5" WEST SIDE OF TOWN
   WILLARDS PARK AND      2.0   700 AM 12/20

...WORCESTER COUNTY...
   DISTRICT 2 (SNOW       1.0  1100 PM 12/20   8 MI WEST IN WHITESBURG

Big Snow Numbers
December 20, 2009

The big snow is over. Here is an interesting thought. A typical winter in Baltimore produces about 18 inches of snow. This one storm has pushed us past that number and winter starts Monday afternoon at 12:47.

Here are some statistics about this storm.

PUBLIC INFORMATION STATEMENT
SPOTTER REPORTS
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
600 AM EST SUN DEC 20 2009

THE FOLLOWING ARE UNOFFICIAL OBSERVATIONS TAKEN FOR THE STORM THAT
AFFECTED OUR REGION FROM DECEMBER 18TH TO DECEMBER 19TH.
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...
   THE MALL              16.0   615 PM 12/19

MARYLAND

...ALLEGANY COUNTY...
   LONACONING            17.4   412 AM 12/20
   NORTH BRANCH 1 N      17.0  1015 PM 12/19
   CUMBERLAND 1 SSE      14.5   702 PM 12/19
   FROSTBURG             14.0   700 PM 12/19

...ANNE ARUNDEL COUNTY...
   GLEN BURNIE           22.5   915 PM 12/19
   CROFTON               21.0  1030 PM 12/19
   BALT-WASH INTL ARPT   21.0  1200 AM 12/20   KBWI
   ANNAPOLIS             20.8   700 PM 12/19
   OWINGS 1 NNE          20.0   845 PM 12/19
   GREEN HAVEN 1 NE      19.9   424 AM 12/20
   GAMBRILLS 1 NW        18.0   733 PM 12/19
   MILLERSVILLE          18.0   815 PM 12/19
   PAROLE 1 NNW          17.0   630 PM 12/19
   RIVA 2 NW             15.0   933 PM 12/19

...BALTIMORE COUNTY...
   CATONSVILLE           20.5   847 PM 12/19
   GUNPOWDER 1 WSW       20.5   933 PM 12/19
   GARRISON 1 SE         20.4  1025 PM 12/19
   ESSEX                 20.0  1020 PM 12/19
   PARKTON               20.0   655 PM 12/19
   DUNDALK 1 SSW         19.5   700 PM 12/19
   MONKTON               19.0   915 PM 12/19
   REISTERSTOWN          19.0   945 PM 12/19
   HAMPTON 1 W           18.0   618 PM 12/19
   HUNT VALLEY           17.8  1005 PM 12/19
   JACKSONVILLE          17.0   900 PM 12/19
   RANDALLSTOWN 1 NW     16.5   715 PM 12/19
   PARKVILLE 1 ENE       12.0   830 PM 12/19

...BALTIMORE CITY COUNTY...
   CARROLL 2 W           17.0  1115 PM 12/19

...CALVERT COUNTY...
   DARES BEACH 3 NW      19.0   800 PM 12/19
   HUNTINGTOWN           18.8  1050 PM 12/19

...CARROLL COUNTY...
   LINEBORO 3 WSW        20.0   933 PM 12/19
   MILLERS               19.0  1100 PM 12/19
   WESTMINSTER 1 N       18.8   729 PM 12/19
   LINEBORO 2 E          18.5   800 PM 12/19

...CHARLES COUNTY...
   BRYANS ROAD 2 ESE     21.2  1000 PM 12/19
   DENTSVILLE 1 SW       13.5  1050 PM 12/19
   WALDORF 4 SE          13.5   600 PM 12/19

...FREDERICK COUNTY...
   LIBERTYTOWN 2 N       22.5   931 PM 12/19
   FREDERICK 1 ESE       22.0  1100 PM 12/19
   NEW MARKET 2 NW       22.0   900 PM 12/19
   MIDDLETOWN            21.0   930 PM 12/19
   JEFFERSON 2 NE        20.2   931 PM 12/19
   POINT OF ROCKS        19.0   930 PM 12/19
   WALKERSVILLE          19.0   743 PM 12/19

...HARFORD COUNTY...
   EDGEWOOD              19.0   800 PM 12/19
   FALLSTON 1 N          18.0   931 PM 12/19
   BEL AIR 1 NE          16.5   840 PM 12/19

...HOWARD COUNTY...
   COLUMBIA              23.0   945 PM 12/19
   SIMPSONVILLE 1 SSE    22.9  1200 AM 12/20
   COLUMBIA 2 N          22.9   950 PM 12/19
   ELKRIDGE 2 W          21.0   930 PM 12/19
   GLENELG 1 ENE         19.5  1050 PM 12/19
   SAVAGE 1 WSW          19.0  1128 PM 12/19
   HANOVER               19.0   945 PM 12/19
   SAVAGE 1 N            17.0   900 PM 12/19
   ELLICOTT CITY 1 ESE   16.8   900 PM 12/19

...MONTGOMERY COUNTY...
   BETHESDA              24.0   500 AM 12/20
   OLNEY                 23.3  1030 PM 12/19
   DERWOOD               23.0   900 PM 12/19
   GLEN ECHO             22.8   930 PM 12/19
   OLNEY 1 S             22.5   800 PM 12/19
   GERMANTOWN            22.0   650 PM 12/19
   GAITHERSBURG 1 NW     22.0   632 PM 12/19
   NORBECK               21.3  1200 AM 12/20
   ROCKVILLE 2 NW        21.0   932 PM 12/19
   NORBECK 1 SE          21.0  1000 PM 12/19
   COLESVILLE            21.0   900 PM 12/19
   GLENMONT              21.0   737 PM 12/19
   POTOMAC 3 ENE         20.6  1100 PM 12/19
   DAMASCUS              20.3   918 PM 12/19
   BETHESDA 2 NNW        20.0   743 PM 12/19
   FAIRLAND 1 ESE        20.0   815 PM 12/19
   ROCKVILLE 1 SSW       20.0   800 PM 12/19
   NORTH POTOMAC 1 E     19.0  1000 PM 12/19
   POOLESVILLE           19.0  1230 AM 12/20
   DARNESTOWN 1 SW       19.0   815 PM 12/19
   SILVER SPRING 1 ESE   18.0  1000 PM 12/19
   GERMANTOWN 3 E        16.5   700 PM 12/19

...PRINCE GEORGES COUNTY...
   LAUREL                19.1  1000 PM 12/19
   BOWIE 2 NNW           19.0   921 PM 12/19
   BOWIE                 18.8   802 PM 12/19
   HYATTSVILLE           18.0   812 PM 12/19
   GLENN DALE 3 ENE      18.0  1050 PM 12/19
   FOREST HEIGHTS 1 SSE  17.0   720 PM 12/19
   BELTSVILLE 1 SSW      15.0  1110 PM 12/19
   ADELPHI 1 ENE         13.8  1000 PM 12/19

...ST. MARYS COUNTY...
   HOLLYWOOD 1 NNE       15.8   300 AM 12/20
   HOLLYWOOD             14.5   950 PM 12/19

...WASHINGTON COUNTY...
   SMITHSBURG            21.0   742 PM 12/19
   HANCOCK               16.0   630 PM 12/19

PUBLIC INFORMATION STATEMENT
SPOTTER REPORTS
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
733 AM EST SUN DEC 20 2009

THE FOLLOWING ARE UNOFFICIAL OBSERVATIONS TAKEN DURING THE PAST 12 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

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

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


DELAWARE

...NEW CASTLE COUNTY...
   WILMINGTON            17.0   100 AM 12/20   NEW CASTLE COUNTY APT
   WILMINGTON            14.0  1000 PM 12/19

...SUSSEX COUNTY...
   FRANKFORD              4.1  1205 AM 12/20

MARYLAND

...CECIL COUNTY...
   COLORA                17.2  1005 PM 12/19

...KENT COUNTY...
   MILLINGTON            20.0   815 PM 12/19

...QUEEN ANNE`S COUNTY...
   KENT ISLAND           15.0   800 PM 12/19
   KENT ISLAND           15.0   810 PM 12/19

John Collins

Still Snowing
December 19, 2009

Here are the latest snow numbers from the National Weather Service.

PUBLIC INFORMATION STATEMENT
SPOTTER REPORTS
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
119 PM EST SAT DEC 19 2009

THE FOLLOWING ARE UNOFFICIAL OBSERVATIONS TAKEN DURING THE PAST 2 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...
   RAWLINGS              16.0  1251 PM 12/19
   LONACONING            13.0   115 PM 12/19

...ANNE ARUNDEL COUNTY...
   CROFTON               12.2  1233 PM 12/19
   OWINGS 1 NNE          12.0  1253 PM 12/19
   SEVERN                11.0  1145 AM 12/19
   PASADENA              11.0  1145 AM 12/19
   MILLERSVILLE          10.5   100 PM 12/19
   GLEN BURNIE            8.0  1145 AM 12/19

...BALTIMORE COUNTY...
   GARRISON 1 SE         12.4   105 PM 12/19
   PARKTON               11.5   114 PM 12/19
   RANDALLSTOWN 1 NW     11.5  1245 PM 12/19
   OELLA 1 E             11.0  1145 AM 12/19
   ESSEX                 10.0   118 PM 12/19
   HUNT VALLEY            9.5   105 PM 12/19
   JACKSONVILLE           9.0  1240 PM 12/19
   GUNPOWDER 1 WSW        7.5  1130 AM 12/19
   PARKVILLE 1 ENE        6.0  1121 AM 12/19

...BALTIMORE CITY COUNTY...
   PIMLICO                9.0  1200 PM 12/19
   HAMILTON 1 WSW         5.8  1140 AM 12/19

...CALVERT COUNTY...
   HUNTINGTOWN           14.3  1252 PM 12/19

...CARROLL COUNTY...
   TANEYTOWN 1 NE        14.0  1242 PM 12/19
   MILLERS               12.0   100 PM 12/19
   LINEBORO 3 WSW        10.5   100 PM 12/19

...CHARLES COUNTY...
   BRYANS ROAD 2 ESE     14.5   107 PM 12/19
   DENTSVILLE 1 SW       10.5  1257 PM 12/19

...FREDERICK COUNTY...
   WALKERSVILLE          15.0   109 PM 12/19
   POINT OF ROCKS        14.0   103 PM 12/19
   MIDDLETOWN 1 N        14.0   102 PM 12/19
   NEW MARKET            12.0   110 PM 12/19

...HARFORD COUNTY...
   EDGEWOOD              10.0  1246 PM 12/19
   FALLSTON               9.0  1240 PM 12/19
   BEL AIR                8.0   100 PM 12/19

...HOWARD COUNTY...
   SAVAGE 1 N            12.0   107 PM 12/19
   COLUMBIA 2 N          11.6  1256 PM 12/19
   ELKRIDGE 2 W          11.0  1228 PM 12/19
   SAVAGE 1 WSW          10.3  1255 PM 12/19
   JESSUP 1 WNW           9.0  1142 AM 12/19

...MONTGOMERY COUNTY...
   GERMANTOWN            15.5   111 PM 12/19
   SILVER SPRING 1 ESE   14.2   101 PM 12/19
   NORBECK 1 SE          13.1   118 PM 12/19
   GAITHERSBURG          13.0  1236 PM 12/19
   FOUR CORNERS 1 N      12.0   104 PM 12/19
   ROCKVILLE 2 SW        11.5  1255 PM 12/19
   NORBECK               11.0  1225 PM 12/19
   FAIRLAND 1 ESE        10.0  1247 PM 12/19
   OLNEY                  9.5  1130 AM 12/19

...PRINCE GEORGES COUNTY...
   BOWIE                 11.0   112 PM 12/19
   COLLEGE PARK          10.0  1248 PM 12/19
   BELTSVILLE 1 SSW       9.0  1224 PM 12/19
   ADELPHI 1 ENE          9.0   112 PM 12/19
   BOWIE 2 N              8.0  1135 AM 12/19

...ST. MARYS COUNTY...
   HILLVILLE 1 ESE       11.5   114 PM 12/19
   PARK HALL 3 ESE        4.0  1222 PM 12/19

...WASHINGTON COUNTY...
   HALFWAY 2 ENE         11.5  1136 AM 12/19

John Collins

Records Within Reach
December 19, 2009

Today’s storm has a chance to break several records including:

Snowiest 19th of December:  7.6″ in 1945

Biggest December snowstorm:  14.1″ in 1960

Snowiest month of December:  20.4″ in 1966

Official snowfall for the Baltimore is measured at BWI-Marshall airport.  Let’s see how many we can break!

Tom Tasselmyer

Warm water off Carolina coast may energize the storm
December 19, 2009

1″ here at WBAL-TV as of 1:00am.  The snow started around 10pm, so we had 1″ in 3 hours, a light pace…so far.  But there are indications that the coastal storm will get a lot stronger in the next few hours.  The center of the storm is currently just east of Charleston, SC and is beginning to move over very warm water.  The buoy at Diamond Shoals, NC reported a water temperature of 72° at 12:50am!  The air temperature at the buoy was 62° with east winds at 43 mph, gusting to 52 mph and the air pressure was falling rapidly.  Those are tropical storm winds and an indication that our coastal storm is cranking up.

The National Weather Service has upgraded the Winter Storm Warning to a Blizzard Warning for Anne Arundel, Prince George’s, Charles, and St. Mary’s Counties.  The latest model guidance still shows a potential for 20-30″ of snow by Sunday morning over parts of central Maryland.

Stay tuned…

Tom Tasselmyer