A strong cold front crossed the region on the afternoon of March 15th, ushering in drastically colder temperatures. A low pressure system approached the region that night and moved north along the Atlantic coast on March 16th.
Every event with a place to put it; 9 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS LWX wrote it up.
A strong cold front crossed the region on the afternoon of March 15th, ushering in drastically colder temperatures. A low pressure system approached the region that night and moved north along the Atlantic coast on March 16th. As the low approached the region early on the 16th, precipitation became widespread and continued through much day. Warm air briefly surged ahead of the low pressure system, allowing precipitation to begin in the form of rain. Colder air quickly filtered in behind the low, allowing rain to change to snow. |Snowfall amounts ranged from 2 to 8 inches. Schools were canceled in Berkeley, Jefferson and Morgan Counties. Newspapers reported numerous traffic accidents and minor injuries due to the hazardous driving conditions.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Baltimore/Washington wrote its last area forecast discussion before the first event at Mar 16, 4:26 AM EST, 34 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
526 AM EDT FRI MAR 16 2007
.SHORT TERM /TODAY-TNGT/...
ID APOLOGIZE FOR BEING LATE W/ THIS...BUT WEVE RUN AT THE RED LN
SINCE 11 PM. 2 OF THE MOST CHALLENGING BACK TO BACK MIDS IN MY 13
WINTERS HERE.
06Z BALLOON SNDG WAS DONE.
HV EXPANDED THE WRNG/ADVSRY AREA N AND W. THIS WL BE A *VERY*
ELEVATION AND LOCATION DEPENDENT EVENT. FOR EX - NRN BALT/CARROLL
ALONG PA BRDR VS SRN PART OF COUNTIES...ALSO WRN LOUDOUN VS. ALONG
RT 28. DIFFERENCE BTWN 1 AND 4 INCHES OF SNOW.
HV XPANDED FAR W ZNS FOR 3-6 INCHES. ALSO ADDED A FZRA ADVSRY FOR
SWRN HIGHLANDS. ANOTHER AREA IN ADVSRY WHICH COULD BE VASTLY
DIFFERENT ARE ROCK/AUG COUNTIES. IN POP CENTRES...ARND 1500...PCPN
WL BE MOSTLY A COLD RA...WHILE ABV 2000...THE WRN HALF OF THE
COUNTIES...TEMPS WL BE COLD ENUF FOR RA TO FRZ ON ROADS/ETC.
TNGT AS LOW MOVES ACROSS N CAROLINA AND OFF CST COLDER AIR GETS
DRAGGED IN AND PCPN TURNS TO SN B4 ENDING AFTER MDNGT E OF THE MTNS.
SNSH COULD CONT IN UPSLOPE ON NW FLOW.
WOODY
&&
.LONG TERM ...
.SATURDAY FCST
DEEPENING UPPER TROF BEGINS TO TAKE ON A NEGATIVE TILT DURING THE
AFTERNOON. STRONG PVA ALONG WITH STEEPENING LAPSE RATES (H5 TEMPS
AROUND -35C) WILL LEAD TO CONVECTIVE SNOW SQUALLS. BEST CVRG TO THE
NORTH AND WEST. NO CHANGES BEYOND SAT.
&&
.HYDROLOGY...SREF MEAN QPF IS ABT INCH AND HALF OF RAIN IN THE FLOOD
WATCH. TWO INCHES OR MORE LIKELY TO BE CONFINED TO LOWER SRN MD.
MINOR FLOODING STILL POSSIBLE MAINLY IN POOR DRAINAGE AREAS AND
URBAN AREAS. SO FLOOD WATCH WILL REMAIN AS IS.
ROSA
&&
.AVIATION...IFR CONDS THRUT TDA AS WELL AS GUSTY N WINDS.
&&
.MARINE...SCA FOR ALL WATERS THRU SAT NGT.
&&
.LWX WATCHES/WARNINGS/ADVISORIES...
DC...FLOOD WATCH THROUGH THIS EVENING FOR DCZ001.
MD...FLOOD WATCH THROUGH THIS EVENING FOR MDZ004>007-009>011-013-
014-016>018.
WINTER STORM WARNING UNTIL 2 AM EDT SATURDAY FOR MDZ003-501-
502.
WINTER WEATHER ADVISORY UNTIL 2 AM EDT SATURDAY FOR MDZ004>006.
VA...FLOOD WATCH THROUGH THIS EVENING FOR VAZ025-026-029-036>042-
050>057.
WINTER STORM WARNING UNTIL 2 AM EDT SATURDAY FOR VAZ028.
WINTER WEATHER ADVISORY UNTIL 2 AM EDT SATURDAY FOR VAZ027-
029>031-042.
FREEZING RAIN ADVISORY UNTIL 2 AM EDT SATURDAY FOR VAZ021-025-
026.
WV...WINTER STORM WARNING UNTIL 2 AM EDT SATURDAY FOR WVZ050>052-
055-501>504.
WINTER WEATHER ADVISORY UNTIL 2 AM EDT SATURDAY FOR WVZ053.
FREEZING RAIN ADVISORY UNTIL 2 AM EDT SATURDAY FOR WVZ054.
MARINE...SMALL CRAFT ADVISORY UNTIL MIDNIGHT EDT SATURDAY NIGHT FOR
ANZ530>537.
&&HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 547 AM EDT FRI MAR 16 2007 ANZ530>537-DCZ001-MDZ003>007-009>011-013-014-016>018-501-502- VAZ021-025>031-036>042-050>057-WVZ050>055-501>504-171000- CHESAPEAKE BAY NORTH OF POOLES ISLAND MD- CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD- CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD- CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD- CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA- TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD- TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD- TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA- DISTRICT OF COLUMBIA-WASHINGTON-FREDERICK MD-CARROLL- NORTHERN BALTIMORE-HARFORD-MONTGOMERY-HOWARD-SOUTHERN BALTIMORE- PRINCE GEORGES-ANNE ARUNDEL-CHARLES-ST. MARYS-CALVERT- EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY-HIGHLAND- AUGUSTA-ROCKINGHAM-SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE- NELSON-ALBEMARLE-GREENE-MADISON-RAPPAHANNOCK-FAUQUIER-LOUDOUN- ORANGE-CULPEPER-PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX- ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA- KING GEORGE-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON-PENDLETON-HARDY- WESTERN GRANT-EASTERN GRANT-WESTERN MINERAL-EASTERN MINERAL- 547 AM EDT FRI MAR 16 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR MARYLAND WEST OF THE EASTERN SHORE INCLUDING THE CHESAPEAKE BAY AND EAST OF GARRETT COUNTY...EASTERN WEST VIRGINIA...NORTHERN AND CENTRAL VIRGINIA... WASHINGTON DC AND THE TIDAL POTOMAC RIVER. .DAY ONE...TODAY AND TONIGHT A WINTER STORM WARNING IS NOW IN EFFECT FOR WESTERN MARYLAND AND EASTERN WEST VIRGINIA EXCEPT JEFFERSON COUNTY. A WINTER WEATHER ADVISORY IS IN EFFECT FOR MUCH OF WESTERN VIRGINIA AND NORTH CENTRAL MARYLAND. PLEASE CONSULT THE LATEST WINTER STORM PRODUCT FROM THE NWS STERLING. A FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING FOR NORTHEAST MARYLAND...LOWER SOUTHERN MARYLAND...NORTHERN AND CENTRAL MARYLAND AND THE DISTRICT OF COLUMBIA. A SMALL CRAFT ADVISORY IS IN EFFECT THE BAY AND TIDAL POTOMAC. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY SMALL CRAFT ADVISORIES ARE EXPECTED ON THE WATERS THROUGH LATE SATURDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
The national radar mosaic for the moment the first event began.
9 winter storm, 1 winter weather. Local standard time, as filed.
Trained Spotters reported between 4 and 8 inches of snow across Berkeley County. Newspapers reported numerous traffic accidents with minor injuries. Schools also closed early due to the winter weather.
Trained Spotters reported between 4 and 6 inches of snow across eastern Grant County.
Trained Spotters reported between 4 and 8 inches of snow across Jefferson County.
Trained Spotters reported between 4 and 6 inches of snow across Hampshire County.
Trained Spotters reported between 4 and 8 inches of snow across Hardy County.
Trained Spotters reported between 4 and 6 inches of snow across eastern Mineral County.
Trained Spotters reported between 4 and 6 inches of snow across western Mineral County.
Trained Spotters reported between 4 and 6 inches of snow across Morgan County. Newspapers reported numerous car accidents with minor injuries. Schools also closed early due to the winter weather.
Trained spotters reported between 2 and 4 inches of snow across Pendleton County.
Trained Spotters reported between 4 and 6 inches of snow across western Grant County.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in West Virginia in 2007Every state in 2007This day in weather historyWarnings in West Virginia, March 2007
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 21311, 21312, 21313, 21314, 21315, 21316, 21317, 21318, 21319, 22688.