1 heat, as filed by the National Weather Service.
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 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 Jun 9, 1:55 PM EST, 5 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 255 PM EDT WED JUN 9 2004 .SHORT TERM (TONIGHT AND TOMORROW)... MAIN FORECAST CHALLENGES STILL REMAIN CENTERED AROUND THE APPROACHING FRONTAL BOUNDARY TOMORROW. ISOLATED SHOWERS AND THUNDERSTORMS HAVE DEVELOPED OVER THE SOUTHERN CWFA AND IN THE HIGHER TERRAIN. EXPECT THE CONVECTION TO CONTINUE INTO THE EARLY EVENING HOURS. THE BOUNDARY LAYER WINDS REMAIN VERY LIGHT...AND A BAY BREEZE WILL ALSO LIKELY GET STARTED LATE THIS AFTERNOON AND WILL CONTINUE TO LINGER INTO THE EVENING. LATER TONIGHT INTO THE OVERNIGHT HOURS...A FRONTAL BOUNDARY WILL BEGIN TO APPROACH FROM THE NORTH AND WEST. THERE WERE SOME SLIGHT DIFFERENCES IN THE AVN AND ETA MODELS AS TO WHEN THE BOUNDARY WOULD MOVE OVER THE CWFA. THE AVN WAS SLIGHTLY FASTER WITH THE APPROACH OF THE FRONT...BUT BOTH MODELS BEGIN TO SLOW THE BOUNDARY AS IT MOVES THROUGH THE REMAINDER OF THE CWFA. ALL IN ALL...BOTH MODELS HAVE BEEN VERY CONSISTENT WITH TAKING THIS BOUNDARY AS FAR SOUTH AS THE NC/VA BORDER BY LATE THURSDAY/EARLY FRIDAY. WILL HAVE THE HIGHEST POPS DURING THE AFTERNOON HOURS TOMORROW. DID NOT MAKE ANY MAJOR CHANGES TO THE TEMPS. MADE SLIGHT TWEAKS TO THE POPS...BUT NO MAJOR CHANGES. .LONG TERM (THURSDAY NIGHT THROUGH WEDNESDAY)... COLD FRONT SETTLES DOWN ACROSS VA THU NIGHT. LEANED TOWARD GFS WHICH SHOWED A STRONGER WITH INDICATION OF UA DISTURBANCE MOVING ALONG THE FRONTAL ZONE LATE THU NIGHT AND INTO EARLY FRI MORNING ENHANCING THE CHC OF PCPN AND POSSIBLY A TSTM. APPEARS TO BE PLENTY OF CLOUDS CONTINUING ON FRI IN DIRTY RIDGE N OF THE FRONT. CANT RULE OUT CHC OF SHOWER...BUT DONT SEE THREAT OF THUNDER ATTM. ENE FLOW ON SAT WITH CONTINUATION OF CLOUDS WITH INFLUX OF ATL MOISTURE. SLIGHT CHC OF SHOWERS...BUT FEEL MOST OF ANY PCPN WILL REMAIN OUT OF CWFA. HIGH PRES BEGINS PULLING AWAY FROM COAST ON SUN WITH VEERING WINDS...DONT SEE MUCH I N THE WAY OF PCPN ON SUN AND TEMPS WILL CREEP INTO THE UPPER 70S TO LOWER 80S. WARMER AIR AND MOISTURE CONTINUE IN WARM SECTOR ON MONDAY WITH CHC OF AFTERNOON TSTMS. MOST LIKELY A GREATER CHC OF THUNDER ON TUE WITH ADVANCE OF NEXT COLD FRONT...BUT KEPT POPS AT 30 DUE TO TIMING UNCERTAINTY. .LWX WATCHES/WARNINGS/ADVISORIES... DC...HT ADVSRY THROUGH 7 PM. MD...HT ADVSRY THROUGH 7 PM. VA...NONE. WV...NONE. MARINE...NONE. LISTEMAA/DCY
HAZARDOUS WEATHER OUTLOOK...COR TO ADD DISTRICT OF COLUMBIA AND S BALTIMORE NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1149 AM EDT WED JUN 9 2004 DCZ001-MDZ002>007-009>011-013-014-016>018-VAZ021-025>031-036>042-050> 057-WVZ048>055-101000- ALBEMARLE VA-ALLEGANY MD-ANNE ARUNDEL MD- ARLINGTON/FALLS CHURCH/ALEXANDRIA VA-AUGUSTA VA-BERKELEY WV- CALVERT MD-CARROLL MD-CHARLES MD-CLARKE VA-CULPEPER VA- DISTRICT OF COLUMBIA DC-FAIRFAX VA-FAUQUIER VA-FREDERICK VA- FREDERICK MD-GRANT WV-GREENE VA-HAMPSHIRE WV-HARDY WV-HARFORD MD- HIGHLAND VA-HOWARD MD-JEFFERSON WV-KING GEORGE VA-LOUDOUN VA- MADISON VA-MINERAL WV-MONTGOMERY MD-MORGAN WV-NELSON VA- NORTHERN BALTIMORE MD-ORANGE VA-PAGE VA-PENDLETON WV- PRINCE GEORGES MD-PRINCE WILLIAM/MANASSAS/MANASSAS PARK VA- RAPPAHANNOCK VA-ROCKINGHAM VA-SHENANDOAH VA-SOUTHERN BALTIMORE MD- SPOTSYLVANIA VA-ST. MARYS MD-STAFFORD VA-WARREN VA-WASHINGTON MD- 1149 AM EDT WED JUN 9 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR MARYLAND WEST OF THE CHESAPEAKE BAY AND EAST OF GARRETT COUNTY...EASTERN WEST VIRGINIA...NORTHERN AND CENTRAL VIRGINIA AND WASHINGTON DC. .DAY ONE... A HEAT ADVISORY IS IN EFFECT THIS AFTERNOON AND EARLY EVENING FOR THE CITIES OF WASHINGTON DC AND BALTIMORE. AFTERNOON HIGH TEMPERATURES OF AROUND 90 DEGREES WITH HIGH HUMIDITIES WILL PRODUCE HEAT INDICES OF AROUND 98 DEGREES. ISOLATED LATE AFTERNOON SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP AND LINGER INTO THE EVENING HOURS. SEVERE WEATHER IS NOT ANTICIPATED...HOWEVER ANY STORMS THAT DEVELOP WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 35 MPH...HEAVY RAINFALL...AND FREQUENT LIGHTING STRIKES. SHOWERS AND THUNDERSTORMS MAY PROVIDE SOME RELIEF FROM THE HEAT. .DAYS TWO THROUGH SEVEN... NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED.
The national radar mosaic for the moment the first event began.
1 heat. Local standard time, as filed.
Heat indices ranged from 95 to 100 degrees.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 2004Every state in 2004This day in weather historyWarnings in Maryland, June 2004
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: 5406390.