Heavy showers spread across the central Appalachian Mountains in advance of a low pressure system moving northeast across the Ohio Valley. Rainfall amounts of 1 to 3 inches were enough to produce flooding along the Blue Ridge Mountains in northern Virginia.
Every event with a place to put it. 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.
Heavy showers spread across the central Appalachian Mountains in advance of a low pressure system moving northeast across the Ohio Valley. Rainfall amounts of 1 to 3 inches were enough to produce flooding along the Blue Ridge Mountains in northern Virginia.
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 28, 4:18 PM EST, 2 hours 12 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
518 PM EDT SUN MAR 28 2010
.SYNOPSIS...
LOW PRESSURE OVER THE LOWER OHIO VALLEY WILL TRACK INTO WEST
VIRGINIA TONIGHT. THE LOW WILL REFORM OFF THE CAROLINA COAST
MONDAY AFTERNOON...AND MOVE TO THE JERSEY SHORE BY EARLY TUESDAY.
HIGH PRESSURE WILL RETURN TO THE REGION FOR THE SECOND HALF OF THE
WEEK.
&&
.NEAR TERM /UNTIL 6 AM MONDAY MORNING/...
AS OF 18Z...WV LOOP DEPICTS THE PRIMARY LOW CENTERED OVER IN/KY
BORDER AND MOVING NE WITH A SECONDARY S/W LOBE OVER ARKLATEX AND
MOVING SE. THE SECONDARY LOBE WILL END UP DEVELOPING INTO A COASTAL
LOW OFF THE CAROLINAS TOMORROW AND BE A WEATHER MAKER FOR THE MID
ATLANTIC MONDAY NIGHT INTO TUESDAY.
COPIOUS MOISTURE AHEAD OF THE PRIMARY LOW SETTING OFF NUMEROUS
SHOWERS FROM EASTERN OHIO VALLEY TO THE CENTRAL APPALACHIANS/WRN CWA
PERIPHERY. GIVEN NE TRACK OF THE LOW...WRN ZONES WOULD BE UNDER THE
LARGEST THREAT FOR RECURRING HEAVY RAIN. HAVE ISSUED A FLOOD WATCH
THROUGH TONIGHT FOR COUNTIES WEST OF THE BLUE RIDGE...WITH QPF
AROUND 1.5 INCHES /LOCALLY HIGHER WITH EASTERN COMPONENT TO LLVL
FLOW ADDING UPSLOPE EFFECT/ BETWEEN THE ALLEGHENIES AND BLUE RIDGE.
EXPECT A LINE OR TWO OF LOCALLY HEAVY SHOWERS TO TRANSLATE EAST
ACROSS THE CWA LATE THIS EVENING THROUGH EARLY MONDAY MORNING AS WLY
FLOW OVERSPREADS THE CWA BEHIND A COLD FRONT. 09Z SREF MUCAPE ON THE
ORDER OF 250 J/KG ALLOWS ISO THUNDER MENTION ACROSS THE SOUTHERN
ZONES AROUND MIDNIGHT...THEN ACROSS THE ERN CWA EARLY MORNING. QPF
BLUE RIDGE AND EAST TO BE AROUND 0.5 TO 1.0 INCHES TONIGHT.
MEANWHILE...SELY FLOW CONTINUES SLOW RISE OF TEMPERATURES/MOISTURE
INTO THE EARLY MORNING HOURS WITH SRN MARYLAND REACHING THE LOW TO
MID 60S...LOW 60S BALT-WASH METRO CORRIDOR.
&&
.SHORT TERM /6 AM MONDAY MORNING THROUGH TUESDAY/...
SYSTEM TRANSFERS ENERGY OFF THE COAST MON. EXACTLY HOW THAT
TRANSPIRES STILL A LTL DOUBTFUL...BUT MOST GDNC IN MUCH BETTER
AGREEMENT THAN YDA. GFS SFC DVLPMNT SEEMS A LTL DUBIOUS CONSIDERING
ONLY MINOR DEVIATIONS IN H5 HGT PROGS. /NAM HAS SIMLR QSTNBL DEEP
AMPLIFICATION TUE./ BASED ON WATER VAPOR PRESENTATION AND RGNL RADAR
TRENDS...GOING W/ A SLGTLY MORE PROGRESSIVE SOLN.
CDFNT WL CROSS CWFA MRNG-MIDDAY...WHICH WL PUSH WARMER/MOIST AIR TO
THE DELMARVA. CUD BE MARGINAL INSTBY W/IN THIS AMS...THO MDL SNDGS
SUGGEST IT MAY BE TUFF TO ROOT IN THE BLYR. HV MRNG THUNDER DC EAST.
POPS REMAIN HI THRU THE AFTN...BUT HV ADDTL DOUBTS ON ACTUAL QPF.
THINK SFC CNVGNC AND DIVGNC ALFT INVOF JET MAX WL BE ENUF TO TRIGGER
ADDTL SHRA. DRIER AIR ADVECTING INTO MTNS WL CUT DOWN ON POTL...BUT
STEEP H5 TROF AXIS TAKES ITS PLACE.
SOME SORT OF CSTL LOW TRUDGES NEWD MON NGT-TUE. MINIMIZED RAPID
DVLPMNT...WHICH WUD IN TURN LIMIT COLD CONVEYOR. PCPN STILL LKLY MON
NGT...BUT A DECR TREND TUE.
&&
.LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/...
CLDS BREAK TUE NGT...MARKING A FAIR AND DRY 2ND HALF OF THE WK.
PLUS...AS RDGG BLDS NOT JUST AT SFC BUT ALL THE WAY TO H5...XPCTG A
SGFNT WARM-UP. MAXT 80F SEEMS WELL W/IN REACH NXT WKND.
&&
.AVIATION /21Z SUNDAY THROUGH FRIDAY/...
MVFR CIGS PERSIST ACROSS THE TERMINALS THEN LOWER TO IFR WITH
SHOWERS THIS EVENING INTO THE EARLY MORNING HOURS. E-SELY FLOW
AROUND 10 KT AHEAD OF THE SHOWERS...WITH FLOW VEERING TO NWLY WITH A
COLD FRONTAL PASSAGE LATE TONIGHT.
FLGT RESTRICTIONS LINGER INTO TUE AS CSTL STORM AFFECTS TERMINALS.
DC-BALT AREA SITES MOST AFFECTED BY PCPN...BUT LOW CLDS PERVASIVE.
CIGS LIFT TUE NGT. VFR REST OF WK.
&&
.MARINE...
HAVE RAISED GALE WARNING FOR LOWER TIDAL POTOMAC AND MID BAY GIVEN
OBS AND FORECAST OF SOUTHEAST FLOW UNDER AN INTENSIFYING 850 JET.
PREV...
STRONG SELY FLOW TO CONTINUE ACROSS LOWER MD BAY AND MIDDLE TO LOWER
TIDAL POTOMAC INTO TONIGHT. THIS STRONG FLOW /GUSTS 25 TO 30 KT/
WILL TURN SLY AND OVERSPREAD THE WATERS THIS EVENING...SO SCA IS
STILL IN EFFECT.
WATERS WL BE W/IN A LULL MON AS LOPRES TRANSITIONS OFF THE COAST.
CONSEQUENTLY HV DROPPED ANY SCA AFT 12Z. WNDS WL PICK BACK UP AGN
MON NGT ONCE LOPRES CONSOLIDATES OFF DELMARVA AND DRIER AIR ADVECTS
EWD. HV RAISED SCA FOR MON NGT INTO TUE EVE BASED ON P-GRAD W/ CSTL
LOW. THAT MAY NEED TO BE XTNDD INTO TUE NGT AND PSBLY WED.
&&
.TIDES/COASTAL FLOODING...
SELY SFC WINDS AHEAD OF AN APPROACHING LOW PRESSURE SYSTEM AN A
FULL MOON CYCLE HAVE RAISED TIDES TO ARND 2 FT ABV NRML. A COASTAL
FLOOD ADVISORY FOR MINOR COASTAL FLOODING HAS BEEN POSTED THROUGH
THE MONDAY MORNING HIGH TIDE CYCLE. THE COASTAL FLOODING THREAT
CONTINUES INTO MONDAY NIGHT AS A COASTAL LOW PASSES THE MOUTH OF
THE CHESAPEAKE BAY.
&&
.LWX WATCHES/WARNINGS/ADVISORIES...
DC...COASTAL FLOOD ADVISORY UNTIL NOON EDT MONDAY FOR DCZ001.
MD...COASTAL FLOOD ADVISORY UNTIL NOON EDT MONDAY FOR MDZ007-011-
013-014-016>018.
FLOOD WATCH THROUGH LATE TONIGHT FOR MDZ003-501-502.
VA...COASTAL FLOOD ADVISORY UNTIL NOON EDT MONDAY FOR VAZ052>055-
057.
FLOOD WATCH THROUGH LATE TONIGHT FOR VAZ021-025>028.
WV...FLOOD WATCH THROUGH LATE TONIGHT FOR WVZ050>052-054-055-
501>504.
MARINE...SMALL CRAFT ADVISORY UNTIL 8 AM EDT MONDAY FOR ANZ530>532-
538>541.
SMALL CRAFT ADVISORY FROM 8 PM MONDAY TO 2 AM EDT WEDNESDAY
FOR ANZ530>543.
GALE WARNING UNTIL 8 AM EDT MONDAY FOR ANZ533-534-537-542-543.
SMALL CRAFT ADVISORY UNTIL 6 AM EDT MONDAY FOR ANZ535-536.
&&
SYNOPSIS...HTS
NEAR TERM...BAJ
SHORT TERM...HTS
LONG TERM...HTS
AVIATION...BAJ/HTS
MARINE...BPP/BAJ/HTS
TIDES/COASTAL FLOODING...BAJHAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 515 PM EDT SUN MAR 28 2010 ANZ530>543-DCZ001-MDZ006-007-011-013-014-016>018-VAZ052>057- 291000- 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- PATAPSCO RIVER INCLUDING BALTIMORE HARBOR- CHESTER RIVER TO QUEENSTOWN MD-EASTERN BAY- CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER- PATUXENT RIVER TO BROOMES ISLAND MD- TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-DISTRICT OF COLUMBIA-NORTHERN BALTIMORE-HARFORD- SOUTHERN BALTIMORE-PRINCE GEORGES-ANNE ARUNDEL-CHARLES-ST. MARYS- CALVERT-PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX- ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA- KING GEORGE- 515 PM EDT SUN MAR 28 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE MARYLAND PORTION OF THE CHESAPEAKE BAY...TIDAL POTOMAC RIVER...AND ADJACENT COUNTIES IN CENTRAL MARYLAND AND NORTHERN VIRGINIA AS WELL AS THE DISTRICT OF COLUMBIA. .DAY ONE...TONIGHT A GALE WARNING IS IN EFFECT FOR THE LOWER TIDAL POTOMAC AND MIDDLE PORTION OF THE CHESAPEAKE BAY TONIGHT...WHILE A SMALL CRAFT ADVISORY IS IN EFFECT FOR THE NORTHERN CHESAPEAKE BAY AND UPPER TIDAL POTOMAC RIVER THROUGH TONIGHT. A PERIOD OF HEAVY RAIN CAN BE EXPECTED LATE TONIGHT. LOCALIZED FLOODING MAY BE POSSIBLE...PARTICULARLY IN THE I-95 CORRIDOR. A COASTAL FLOOD ADVISORY FOR MINOR COASTAL FLOODING IS IN EFFECT ALONG THE WESTERN SHORE OF THE CHESAPEAKE BAY AND THE TIDAL POTOMAC MONDAY THROUGH THE MONDAY MORNING HIGH TIDE CYCLE. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THE THREAT FOR COASTAL FLOODING CONTINUES INTO MONDAY NIGHT AS LOW PRESSURE PASSES THE MOUTH OF THE CHESAPEAKE BAY. SMALL CRAFT ADVISORIES HAVE BEEN POSTED FOR MONDAY NIGHT THROUGH TUESDAY EVENING FOR THE MARYLAND CHESAPEAKE BAY AND TIDAL POTOMAC RIVER. THE ADVISORIES MAY NEED TO BE EXTENDED INTO WEDNESDAY FOR A PORTION OF THE MARYLAND WATERS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED THROUGH TONIGHT. MDZ003>005-009-010-501-502-VAZ021-025>031-036>040-042-050-051-501- 502-WVZ050>055-501>504-291000- WASHINGTON-FREDERICK MD-CARROLL-MONTGOMERY-HOWARD- EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY-HIGHLAND- AUGUSTA-ROCKINGHAM-SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE- NELSON-ALBEMARLE-GREENE-MADISON-RAPPAHANNOCK-LOUDOUN-ORANGE- CULPEPER-NORTHERN FAUQUIER-SOUTHERN FAUQUIER-HAMPSHIRE-MORGAN- BERKELEY-JEFFERSON-PENDLETON-HARDY-WESTERN GRANT-EASTERN GRANT- WESTERN MINERAL-EASTERN MINERAL- 515 PM EDT SUN MAR 28 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN WEST VIRGINIA... NORTHERN AND CENTRAL VIRGINIA...AND CENTRAL AND WESTERN MARYLAND WITH THE EXCEPTION OF GARRETT COUNTY. .DAY ONE...TONIGHT A FLOOD WATCH IS IN EFFECT THROUGH TONIGHT FOR PORTIONS OF EASTERN WEST VIRGINIA...WESTERN MARYLAND...AND VIRGINIA WEST OF THE BLUE RIDGE. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED THROUGH TONIGHT.
The national radar mosaic for the moment the first event began.
21 flood. Local standard time, as filed.
Mount Jackson Road was reported to have high water on it. Rain gauge in the area recorded 2.76 inches.
State Route 605 was closed due to high water. A report of 2.16 inches of rain was received from the area.
Route 680 was closed due to high water. Rain gauge in the area measured 1.56 inches.
Route 42 was closed due to high water.
Route 685 was closed due to high water.
Route 675 was closed due to high water.
Route 758 was closed due to high water.
Route 769 was closed due to high water.
Route 725 was closed due to high water.
Route 776 was closed due to high water.
Route 812 was closed due to high water.
Route 603 was closed due to high water.
Route 623 was closed due to high water.
Route 648 was closed due to high water.
Route 714 was closed due to high water.
Portions of Route 340 were closed due to high water. Rain gauge reports in the area were as high as 2.36 inches.
Route 679 was closed due to high water. Rainfall report from the area was received of 1.40 inches.
Route 692 was closed due to high water.
Route 695 was closed due to high water.
Route 699 was closed due to high water.
Route 628 was closed due to high water.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Virginia in 2010Every state in 2010This day in weather historyWarnings in Virginia, March 2010
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: 221833, 221834, 221835, 221836, 221837, 221838, 221839, 221840, 221841, 221842, 221843, 221844, 221845, 221846, 221848, 221850, 221852, 221853, 221854, 221855, 221857.