An upper level disturbance swung across the Mid Atlantic during the afternoon and evening of June 30th. With lingering moisture in place, scattered thunderstorms developed in the afternoon.
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.
An upper level disturbance swung across the Mid Atlantic during the afternoon and evening of June 30th. With lingering moisture in place, scattered thunderstorms developed in the afternoon. One storm became severe over Anne Arundel County, downing trees and power lines 2 miles southwest of Davidsonville.
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 30, 7:46 PM EST, 1 hour 29 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 846 PM EDT MON JUN 30 2008 .SYNOPSIS... AN UPPER LEVEL DISTURBANCE IS FORECAST TO BRING SCATTERED SHOWERS AND THUNDERSTORMS THIS EVENING. THEN...DRIER WEATHER WILL RETURN FOR THE MIDDLE OF THE WEEK AS HIGH PRESSURE BUILDS INTO THE REGION. A WEAK COLD FRONT MAY SAG INTO THE AREA FOR THE HOLIDAY WEEKEND. && .NEAR TERM /UNTIL 6 AM TUESDAY MORNING/... SHORTWAVE WAS MOVING INTO/THROUGH THE CWA THIS EVENING. ENHANCED VERTICAL MOTION ASSOCIATED WITH THE SHORTWAVE HAS SUPPORTED SCATTERED SHOWERS AND THUNDERSTORMS ACROSS THE AREA. THUNDERSTORMS HAVE INTENSIFIED SOME AFTER MOVING EAST OF THE BLUE RIDGE WHERE SOME CLEARING ALLOWED FOR BETTER INSTABILITY /LAPS SUGGESTED 2K J/KG OF CAPE/. THIS ACTIVITY WILL CONTINUE TO MOVE EAST ACROSS THE REGION INCLUDING THE BALTIMORE WASHINGTON CORRIDOR OVER THE NEXT FEW HOURS WITH BRIEF HEAVY RAIN AND GUSTY WINDS POSSIBLE. WILL HAVE POPS IN THROUGH MIDNIGHT. EASTWARD PROPAGATION AND LOSS OF DAYTIME HEATING SHOULD MEAN LITTLE LEFTOVER CONVECTION SAVE FOR A STRAY SHOWER AFTER MIDNIGHT. && .SHORT TERM /6 AM TUESDAY MORNING THROUGH 6 PM TUESDAY/... UPPER TROUGH IS FORECAST TO EXIT TUESDAY. AM WORRIED ABOUT RESIDUAL SHOWERS OR THUNDERSTORMS DEVELOPING MAINLY EAST OF THE MTNS BEFORE NVA CAN MOVE IN BEHIND THE TROUGH. CURRENT FORECAST IS DRY...BUT MAY NEED TO ADD SOME POPS IN FOR TUESDAY ON FUTURE SHIFTS. && .LONG TERM /TUESDAY NIGHT THROUGH MONDAY/... PRETTY HIGH CONFIDENCE EXISTS IN WEDNESDAY BEING A DRY DAY WITH HIGH PRESSURE OVERHEAD...BUT MODELS AND ENSEMBLES POINT TO INCREASING CHANCES OF CONVECTION TOWARD THE END OF THE WEEK. LATEST GFS INDICATES A FRONT SINKING SOUTH INTO THE MID ATLANTIC LATER THURSDAY INTO FRIDAY...AND REMAINING IN PLACE THROUGH THE WEEKEND. THURSDAY LOOKS LIKE A WARM DAY AHEAD OF THE FRONT...THEN THE EXACT POSITION OF THE FRONT ALONG WITH CLOUDS/PRECIP WILL HELP DETERMINE TEMPERATURES ON THE 4TH INTO THE WEEKEND. REGARDLESS...THE 4TH AND THE WEEKEND DONT LOOK QUITE AS WARM AS THURSDAY. IF THE FRONT IS DRAPED OVER THE AREA DURING THAT TIME...THEN PERIODS OF CONVECTION WILL BE POSSIBLE. HAVE CHANCE POPS FRIDAY-SUNDAY. THIS COULD LINGER INTO MONDAY IF THE FRONT DOESNT CLEAR THE CWA AND/OR DISSIPATE. DETAILS WILL NEED TO BE RESOLVED WITH TIME. && .AVIATION /01Z TUESDAY THROUGH SATURDAY/... WATCHING ONE LINE OF SHOWERS/THUNDERSTORMS TO MOVE ACROSS TERMINALS THIS EVENING. KMRB/KCHO GENERALLY IN THE CLEAR 00Z-01Z. REST OF TERMINALS IN THE CLEAR BY 03Z. MAY BE MVFR LCL IFR FOG OVERNIGHT...OTHERWISE VFR THROUGH TUESDAY. NO SIGNIFICANT WEATHER IS EXPECTED WEDNESDAY OR THURSDAY. THUNDERSTORMS WILL BE POSSIBLE AGAIN BY FRIDAY. && .MARINE... THUNDERSTORMS WILL MOVE EAST OF THE BAY BY AROUND 03Z. SHORTWAVE WILL MOVE THROUGH SWINGING WINDS AROUND TO THE WEST NORTHWEST OVERNIGHT INTO TUESDAY. WILL HAVE TO WATCH WEDNESDAY NIGHT INTO THURSDAY FOR POSSIBLE SMALL CRAFT ADVISORY CONDITIONS. && .LWX WATCHES/WARNINGS/ADVISORIES... DC...NONE. MD...NONE. VA...NONE. WV...NONE. MARINE...NONE. && PELOQUIN
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 254 PM EDT MON JUN 30 2008 ANZ530>537-DCZ001-MDZ006-007-011-013-014-016>018-VAZ052>057- 011030- 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-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- 254 PM EDT MON JUN 30 2008 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...THIS AFTERNOON AND TONIGHT AN UPPER LEVEL DISTURBANCE IS FORECAST TO PASS OVER THE MID ATLANTIC REGION THIS EVENING. SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP BY LATE AFTERNOON...LASTING THROUGH THE EVENING HOURS. A FEW OF THESE STORMS MAY BECOME STRONG OR SEVERE WITH LOCALLY DAMAGING WINDS AND LARGE HAIL BEING THE PRIMARY THREATS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SKYWARN ACTIVATION IS NOT ANTICIPATED THIS AFTERNOON OR TONIGHT. MDZ003>005-009-010-501-502-VAZ021-025>031-036>042-050-051- WVZ050>055-501>504-011030- 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-FAUQUIER-LOUDOUN- ORANGE-CULPEPER-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON-PENDLETON- HARDY-WESTERN GRANT-EASTERN GRANT-WESTERN MINERAL-EASTERN MINERAL- 254 PM EDT MON JUN 30 2008 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...THIS AFTERNOON AND TONIGHT AN UPPER LEVEL DISTURBANCE IS FORECAST TO PASS OVER THE MID ATLANTIC REGION THIS EVENING. SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP DURING THE MID TO LATE AFTERNOON...LASTING INTO THE EARLY EVENING HOURS. A FEW OF THESE STORMS MAY BECOME STRONG OR SEVERE WITH LOCALLY DAMAGING WINDS AND LARGE HAIL BEING THE PRIMARY THREATS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SKYWARN ACTIVATION MAY BE REQUIRED THIS AFTERNOON.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 817 PM EDT MON JUN 30 2008 VAZ041-052-055-010115- STAFFORD VA-FAUQUIER VA-PRINCE WILLIAM/MANASSAS/MANASSAS PARK VA- 817 PM EDT MON JUN 30 2008 ...STRONG THUNDERSTORMS TO AFFECT STAFFORD...SOUTHERN FAUQUIER AND PRINCE WILLIAM COUNTIES... AT 817 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 3 MILES SOUTHEAST OF MIDLAND...MOVING EAST AT 27 MPH. THIS STORM WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO 50 MPH. THE COMMUNITIES OF SOMERVILLE...HEFLIN...SHILOH...RUBY...ROSEVILLE... INDEPENDENT HILL AND GARRISONVILLE WILL BE AFFECTED BY THIS STORM. GMS
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 841 PM EDT MON JUN 30 2008 DCZ001-MDZ009-013-016-VAZ042-052>055-010200- DISTRICT OF COLUMBIA DC-MONTGOMERY MD-PRINCE GEORGES MD-STAFFORD VA- LOUDOUN VA-CHARLES MD-PRINCE WILLIAM/MANASSAS/MANASSAS PARK VA- ARLINGTON/FALLS CHURCH/ALEXANDRIA VA-FAIRFAX VA- 841 PM EDT MON JUN 30 2008 ...STRONG THUNDERSTORMS TO AFFECT THE DISTRICT OF COLUMBIA...ARLINGTON...MONTGOMERY...PRINCE GEORGES...STAFFORD... LOUDOUN...CHARLES...PRINCE WILLIAM...MANASSAS...MANASSAS PARK AND FAIRFAX COUNTIES... AT 841 PM EDT...DOPPLER RADAR INDICATED A LINE OF STRONG THUNDERSTORMS FROM STERLING...SOUTH TO STAFFORD...MOVING EAST AT 30 MPH. THIS STORM WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO 50 MPH. MUCH OF THE WASHINGTON DC METROPOLITAN AREA...SOUTH ALONG THE INTERSTATE 95 CORRIDOR TO NEAR STAFFORD...WILL BE AFFECTED BY THIS STORM. GMS
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
909 PM EDT MON JUN 30 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0808 PM TSTM WND GST 4 SE WARRENTON 38.68N 77.74W
06/30/2008 E65 MPH FAUQUIER VA OTHER FEDERAL
&&
GMSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
915 PM EDT MON JUN 30 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0537 PM TSTM WND DMG ALEXANDRIA 38.82N 77.09W
06/30/2008 CITY OF ALEXANDRIA VA TRAINED SPOTTER
DOWNED TREE BLOCKING FAIRFAX ST...BETWEEN WILKES AND
GIBBON ST.
&&
GMSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
941 PM EDT MON JUN 30 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0535 PM TSTM WND DMG 3 SSE ALEXANDRIA 38.78N 77.06W
06/30/2008 FAIRFAX VA LAW ENFORCEMENT
TREE DOWN AT INTERSECTION OF FORT HUNT ROAD AND BELLE
HAVEN ROAD.
&&
CMEADOWSSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 943 PM EDT MON JUN 30 2008 MDZ013-014-018-010245- ANNE ARUNDEL MD-PRINCE GEORGES MD-CALVERT MD- 943 PM EDT MON JUN 30 2008 ...STRONG THUNDERSTORMS TO AFFECT ANNE ARUNDEL...PRINCE GEORGES AND CALVERT COUNTIES... AT 943 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER CAMP SPRINGS...MOVING EAST AT 32 MPH. THIS STORM WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO 50 MPH. THE COMMUNITIES OF MARLTON...KETTERING...UPPER MARLBORO...DUNKIRK AND MAYO WILL BE AFFECTED BY THIS STORM. GMS
The Sterling radar (KLWX), 73 km away, was scanning. The volume nearest the first event began at 02:13 UTC.
1 thunderstorm wind. Local standard time, as filed.
Anne Arundel County Fire and Rescue Department reported trees and wires down near Davidsonville.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 2008Every state in 2008This day in weather historyWarnings in Maryland, June 2008
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: 110571.