Areas of dense fog formed during the early morning hours across the foothills of the Blue Ridge Mountains east towards Interstate 95. Visibilities across the area were reduced to less than a quarter mile.
Every event with a place to put it; 17 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.
Areas of dense fog formed during the early morning hours across the foothills of the Blue Ridge Mountains east towards Interstate 95. Visibilities across the area were reduced to less than a quarter mile.
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 Feb 26, 9:56 PM EST, 4 hours 4 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 956 PM EST MON FEB 26 2007 .UPDATE... ONLY MINOR CHGS TO THE FCST. THINK PROBABILITIES ARE LOW E OF THE MTNS BUT THERE IS A CHC OF SOME LGT PCPN JUST THE SAME. COMP RDR SHOWS ENHANCED RETURNS IN SRN W.V. TREKKING NE OVRNGT. LEFT 30 POPS IN FCST...BUT ADDED THE S WORD AS IF IT DOES PCPT8 I DONT THINK SOME WET FLAKES CAN BE RULED OUT ACROSS THE NERN SXN OF THE CWA. STILL...NO ACCUM. 30 POPS E...UPPED POPS TO 40 IN W WHERE A BETTER CHC EXISTS. HV FOG WORDING IN ZNS...BUT ATTM NOT PLANNING ON ADVSRY. MIDSHIFT CAN MONITOR. WOODY .SHORT TERM /TONIGHT THROUGH TUESDAY/... WEAK S/W TROUGH OVER THE LOWER OHIO VALLEY WILL TRANSLATE EAST TONIGHT AND COULD GENERATE A FEW RAIN SHOWERS MAINLY AFTER 03Z. GFS/NAM MODELS BOTH DEVELOP SOME LIGHT QPF OVERNIGHT AND SREF MEANS ALSO INDICATE LOW PROBABILITIES OF BETWEEN A TRACE AND 5 HUNDREDTHS SO THINK IS PRUDENT TO ADD LOW CHANCE POPS. BDRY LYR TEMPS AND THICKNESSES SUGGEST ANY PRECIP WILL FALL IN THE FORM OF RAIN WITH ANY SNOW ABV 1500 FT. ANYWAY...QPF VERY LIGHT AND SHOULD NOT CAUSE ANY PROBLEMS. MAIN CONCERN IS THE POTENTIAL FOR DENSE FOG TOWARD MORNING ESPECIALLY IN AREAS THAT GET SOME RAIN. 15Z WRF-NMM MODEL HITS THE I-95 CORRIDOR OVERNIGHT VERY HARD WITH DENSE FOG. ANY PRECIP WILL EXIT THE AREA BY 12Z WITH LOTS OF CLOUDS REMAINING. WARMER WITH HIGHS AROUND 50F. && .LONG TERM /TUESDAY NIGHT THROUGH MONDAY/... AT THE SURFACE...HIGH PRESSURE BUILDS TUESDAY NIGHT AND REMAINS OVER THE REGION THROUGH THURSDAY. ALOFT...A FEW EMBEDDED WAVES IN NEARLY ZONAL FLOW WILL PRODUCE MOSTLY CLOUD COVER MINUS PRECIPITATION CHANCES. TEMPERATURES WILL REMAIN NEAR NORMAL. ANOTHER LARGE PLANS SYSTEM SPINS UP DURING THE MIDDLE PART OF THE WORK WEEK AND APPROACHES THE MID ATLANTIC ON THURSDAY BEFORE DRIFTING OVER THE GREAT LAKES FOR THE WEEKEND. HAVE TRIED TO TIME PRECIPITATION CHANCE FOR MAINLY THURSDAY AFTERNOON ACROSS MUCH OF THE FORECAST AREA. AS FOR TYPE...SO FAR LOOKS LIKE LOWER LEVELS ARE WARM ENOUGH TO SUPPORT RAIN AND LEAVE OUT THE WINTRY MIX THIS GO AROUND. IF TIMING OF PRECIPITATION SPEEDS UP...MAY NEED TO INCLUDE A RAIN/SNOW COMBO AT ONSET THURSDAY MORNING BEFORE TEMPERATURES HAVE SUFFICIENT TIME TO WARM UP. BEST CHANCE OF RAIN LOOKS TO BE THURSDAY NIGHT AS A SECONDARY LOW DEVELOPS OVERHEAD AND PUSHES NORTHEAST AS THE PRIMARY LOW WEAKENS SOME AND LIFTS NORTH. THIS WOULD KEEP THE REGION UNDER THE INFLUENCE OF WARM ADVECTION AND OVERNIGHT LOW TEMPERATURES IN THE MID TO UPPER 30S. WENT CLOSE TO HPC POPS...BUT CHANGED TO A BLANKET 80 POP/DEFINITE CATEGORY. MAIN AREA OF PRECIPITATION EXITS TO THE EAST FRIDAY NIGHT AND SATURDAY...LEAVING UPSLOPE SNOW CHANCE THROUGH THE REMAINDER OF THE WEEKEND. && .AVIATION... CHALLENGING/DIFFICULT FORECAST. LOW CLOUDS HAVE ERODED WITH CHO/MRB NOW CLEAR BUT XPC CLOUDS TO THICKEN AND LOWER TONIGHT IN ADVANCE OF S/W. LIGHT WINDS...PLENTY OF LOW-LVL MOISTURE FROM MELTING SNOW AND POTENTIAL FOR RAIN OVERNIGHT SUGGEST HIGH LIKELIHOOD OF DENSE FOG FORMATION. HAVE INDICATED A PERIOD OF IFR AT ALL TAF SITES WITH MRB AND CHO PROBABLY GOING TO VLIFR/LIFR AT SOME POINT DURING THE NIGHT. && .MARINE... SMALL CRAFT ADVISORY CONDITIONS ARE POSSIBLE THURSDAY THROUGH FRIDAY AS LOW PRESSURE DEVELOPS OVER THE MID ATLANTIC AND STRENGTHENS AS IT PUSHES NORTHEAST TOWARD THE END OF THE WORK WEEK AND INTO THE WEEKEND. && .LWX WATCHES/WARNINGS/ADVISORIES... DC...NONE. MD...NONE. VA...NONE. WV...NONE. MARINE...NONE. && SHORT TERM/AVIATION...ROSA LONG TERM/MARINE...SAR
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 242 PM EST MON FEB 26 2007 ANZ530>537-DCZ001-MDZ003>007-009>011-013-014-016>018-501-502- VAZ021-025>031-036>042-050>057-WVZ050>055-501>504-271000- 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- 242 PM EST MON FEB 26 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...THIS AFTERNOON AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY SMALL CRAFT CONDITIONS ARE POSSIBLE THURSDAY AND FRIDAY OVER THE ENTIRE MARINE AREA. OTHERWISE...NO OTHER HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
The national radar mosaic for the moment the first event began.
21 dense fog. Local standard time, as filed.
The ASOS at the Charlottesville-Albemarle Airport reported several hours of fog reducing visibilities to a quarter mile or less.
The ASOS at Reagan National Airport reported several hours of fog reducing visibilities to a quarter mile or less.
Automated observations reported several hours of fog reducing visibilities to a quarter mile or less.
Automated observations reported several hours of fog reducing visibilities to a quarter mile or less.
Automated observations reported several hours of fog reducing visibilities to a quarter mile or less.
Automated observations reported several hours of fog reducing visibilities to a quarter mile or less.
Automated observations reported several hours of fog reducing visibilities to a quarter mile or less.
Dense fog reduced visibilities to a quarter mile or less.
Dense fog reduced visibilities to a quarter mile or less.
The ASOS at Dulles International Airport reported dense fog reducing visibilities to a quarter mile or less.
Dense fog reduced visibilities to a quarter mile or less.
Dense fog reduced visibilities to a quarter mile or less.
Automated surface observations in Orange, VA., reported dense fog reducing visibilities to a quarter mile or less.
Automated surface observations surrounding Page County reported dense fog reducing visibilities to a quarter mile or less.
Automated surface observations in Manassas, VA., reported dense fog reducing visibilities to a quarter mile or less.
Automated surface observations surrounding Rappahannock County reported dense fog reducing visibilities to a quarter mile or less.
Automated surface observations surrounding Rockingham County reported dense fog reducing visibilities to a quarter mile or less.
Automated surface observations surrounding Shenandoah County reported dense fog reducing visibilities to a quarter mile or less.
Automated surface observations in Fredericksburg, VA., reported dense fog reducing visibilities to a quarter mile or less.
Automated surface observations in Stafford, VA., reported dense fog reducing visibilities to a quarter mile or less.
Automated surface observations surrounding Warren County reported dense fog reducing visibilities to a quarter mile or less.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Virginia in 2007Every state in 2007This day in weather historyWarnings in Virginia, February 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: 16187, 16188, 16189, 16190, 16191, 16192, 16193, 16194, 16195, 16196, 16197, 16198, 16199, 16200, 16201, 16202, 16203, 16204, 16205, 16206, 16207.