A coastal front was near the Mid-Atlantic coast and easterly flow ushered in low clouds and patchy fog. Dense fog was reported in the Northern Piedmont in the morning.
Every event with a place to put it; 1 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 coastal front was near the Mid-Atlantic coast and easterly flow ushered in low clouds and patchy fog. Dense fog was reported in the Northern Piedmont in the morning.
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 Aug 3, 2:50 AM EST, 2 hours 40 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 350 AM EDT SUN AUG 3 2014 .SYNOPSIS... A COASTAL FRONT WILL REMAIN NEARLY STATIONARY ALONG THE EASTERN SEABOARD THIS WEEKEND...THEN WILL DISSIPATE EARLY IN THE WEEK. A COLD FRONT WILL MOVE THROUGH THE AREA LATE WEDNESDAY. && .NEAR TERM /THROUGH TONIGHT/... A COASTAL FRONT REMAINS OFF THE MID ATLANTIC COAST WHILE A SHORTWAVE TROUGH MOVES ACROSS THE OHIO VALLEY THIS MORNING. A WAVE OF LOW PRESSURE IS EXITING THE MID ATLANTIC AND SHOWERS WILL CONTINUE TO MOVE EASTWARD ACROSS THE CHESAPEAKE BAY REGION. DRIER AIR WILL MOVE INTO THE CENTRAL FOOTHILLS THIS MORNING AS THE SHORTWAVE TROUGH APPROACHES THE HIGHLANDS AS EVIDENT ON WATER VAPOR. EASTERLY FLOW ACROSS THE INTERSTATE 95 CORRIDOR WILL LEAD TO LOW CLOUDS AND PATCHY FOG THIS MORNING. A FEW SHOWERS AND SPRINKLES WILL BE POSSIBLE THROUGH THIS MORNING. THE SHORTWAVE TROUGH WILL MOVE ACROSS THE REGION THIS AFTERNOON. SHOWERS AND ISOLATED THUNDERSTORMS ARE POSSIBLE AS DRIER AIR MOVES IN ALOFT. BREAKS OF SUNSHINE ARE EXPECTED THIS AFTERNOON AND DEWPTS WILL STAY IN THE UPPER 60S WHICH WILL ALLOW INSTABILITY TO RISE. ALTHOUGH ENERGY AND ENTRANCE REGION OF A JET WILL BE COLLOCATED ACROSS THE MID ATLANTIC DURING PEAK HEATING HRS...WEAK SHEAR PROFILES WILL LIKELY LEAD TO LITTLE ORGANIZATION...EXPECTING ISO-SCT THUNDERSTORMS BY EARLY EVENING MAINLY NORTH OF INTERSTATE 66 IN VA AND INTERSTATE 50 IN MD. FCST MAX TEMPS WILL AROUND 80 TODAY. AREAS THAT DO SEE SUNSHINE WILL LIKELY RISE INTO THE MID 80S. SHORTWAVE TROUGH WILL MOVE OFF THE COAST TONIGHT AND SUBSIDENCE BEHIND IT WILL LEAD TO DRY CONDITIONS. LITTLE ADVECTION AT THE SFC WILL LEAD TO SATURATED CONDITIONS NEAR THE SFC. PATCHY FOG IS POSSIBLE IN FAVORABLE AREAS MAINLY EAST OF THE BLUE RIDGE. && .SHORT TERM /MONDAY/... SOUTHERLY FLOW IS EXPECTED MONDAY AND THE COASTAL FRONT IS EXPECTED TO MOVE WESTWARD AND INTO THE MID ATLANTIC. THIS WILL LEAD TO THE CHANCE OF SHOWERS AND ISOLATED THUNDERSTORMS ALONG THE FRONT AND ACROSS I-95 AND EAST. FCST MAX TEMPS IN THE MID TO UPPER 80S ARE EXPECTED MONDAY. && .LONG TERM /MONDAY NIGHT THROUGH SATURDAY/... LONGWAVE TROUGH LOOKS TO AFFECT THE EASTERN CONUS THROUGH THE UPCOMING WEEK. MULTIPLE SHORTWAVES ROUNDING THE BASE OF THE TROUGH WILL PROVIDE UNSETTLED CONDITIONS INTO WEDNESDAY. SHORTWAVE WEDNESDAY LIKELY IS ACCOMPANIED BY A COLD FRONTAL PASSAGE...WHICH MAY ENHANCE CHANCE OF SHOWERS AND THUNDERSTORMS FOR WEDNESDAY. BUT GIVEN MODEST INSTABILITY AND WEAK SHEAR...SEVERE WEATHER IS NOT EXPECTED. MEANWHILE...NHC CONTINUES TO FORECAST BERTHA OVER THE WESTERN ATLANTIC CURVING AWAY FROM THE COAST DURING THE MID WEEK. PLEASE REFER TO THE LATEST NHC FORECAST FOR MORE DETAILS ON BERTHA. TOWARD THE END OF THE WEEK...WHILE LONGWAVE TROUGH PERSISTS MODELS INDICATE THE FRONTAL BOUNDARY STALLING OUT TO THE SOUTH OF THE CWA WHICH IS LIKELY WHERE MOST OF THE PRECIPITATION WOULD RESIDE. SOME DRYING /LOWER DEWPOINTS AND PRECIPITABLE WATERS/ MAY ALSO OCCUR FOR THE LATE WEEK...SO HAVE FAVORED A DRY FORECAST DURING THIS TIME. BY SATURDAY...GFS KEEPS THIS BOUNDARY TO THE SOUTH WHILE THE ECMWF SUGGESTS IT LIFTS BACK NORTH /POSSIBLY WITH A WAVE OF LOW PRESSURE ALONG IT/. CONFIDENCE IS LOW THIS FAR OUT. FOLLOWED WPC WITH LOW POPS ACROSS THE EXTREME SOUTHWEST CWA. && .AVIATION /08Z SUNDAY THROUGH THURSDAY/... ISO-SCT SHRA POSSIBLE AT THE TERMINALS THIS MORNING. LOW CLOUDS DUE TO THE LIGHT EASTERLY FLOW WILL WORSEN THIS MORNING. IFR CONDITIONS ARE EXPECTED THROUGH SUNRISE. WINDS WILL REMAIN LIGHT AND EASTERLY AT DCA-BWI-MTN-IAD BY THIS AFTERNOON. SHRA AND VCTS IS EXPECTED THIS AFTERNOON WITH THE EXCEPTION OF CHO. DRY CONDITIONS ARE EXPECTED TONIGHT AND INTO MONDAY MORNING. SATURATED CONDITIONS WILL LIKELY LEAD TO FOG DEVELOPING INTO MONDAY MORNING. MVFR/IFR CONDITIONS POSSIBLE DURING THIS TIME. OUTLOOK...EXPECT CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH WEDNESDAY WITH MULTIPLE SHORTWAVES MOVING THROUGH. COLD FRONT IS EXPECTED TO MOVE SOUTH LATE WEDNESDAY. && .MARINE... LOW PRESSURE ALONG A COASTAL FRONT WILL MOVE EAST OF THE WATERS THIS MORNING. SHOWERS ASSOCIATED WITH THE COASTAL LOW WILL ALSO MOVE TO THE NORTHEAST THIS MORNING. LIGHT EASTERLY FLOW IS EXPECTED ON THE WATERS TODAY WHILE ISO-SCT SHOWERS AND THUNDERSTORMS ARE EXPECTED TODAY MAINLY FOR THE WATERS NORTH OF NORTH BEACH. ACTIVITY WILL MOVE TO THE EAST BY EVENING AND DRY CONDITIONS ARE EXPECTED TONIGHT. THE COASTAL FRONT WILL MOVE ACROSS THE WATERS MONDAY AFTERNOON AND SHOWERS AND ISO THUNDERSTORMS ARE POSSIBLE MONDAY AFTERNOON. GENERALLY WEAK GRADIENT SHOULD KEEP WINDS BELOW SCA LEVELS MID TO LATE WEEK. && .LWX WATCHES/WARNINGS/ADVISORIES... DC...NONE. MD...NONE. VA...NONE. WV...NONE. MARINE...NONE. && SYNOPSIS...HAS/BPP NEAR TERM...HAS SHORT TERM...HAS LONG TERM...BPP AVIATION...HAS/BPP MARINE...HAS/BPP
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 501 AM EDT SUN AUG 3 2014 ANZ530>543-DCZ001-MDZ006-007-011-013-014-016>018-VAZ052>057- 041000- 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- 501 AM EDT SUN AUG 3 2014 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...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. MDZ003>005-009-010-501-502-VAZ025>031-036>040-042-050-051-501>504- WVZ050>053-055-501>506-041000- WASHINGTON-FREDERICK MD-CARROLL-MONTGOMERY-HOWARD- EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY-AUGUSTA- ROCKINGHAM-SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-NELSON- ALBEMARLE-GREENE-MADISON-RAPPAHANNOCK-LOUDOUN-ORANGE-CULPEPER- NORTHERN FAUQUIER-SOUTHERN FAUQUIER-WESTERN HIGHLAND- EASTERN HIGHLAND-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON-HARDY- WESTERN GRANT-EASTERN GRANT-WESTERN MINERAL-EASTERN MINERAL- WESTERN PENDLETON-EASTERN PENDLETON- 501 AM EDT SUN AUG 3 2014 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...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
The national radar mosaic for the moment the first event began.
1 dense fog. Local standard time, as filed.
Visibilities of a quarter mile or less were measured at Culpeper, Warrenton, Luray and Orange Airports.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Virginia in 2014Every state in 2014This day in weather historyWarnings in Virginia, August 2014
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: 540160.