A cold front stalled out over the region on the 3rd. Warm and humid air ahead of the front combined with the forcing from the front to trigger showers and thunderstorms.
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.
A cold front stalled out over the region on the 3rd. Warm and humid air ahead of the front combined with the forcing from the front to trigger showers and thunderstorms. There was enough instability along with stronger winds aloft for some thunderstorms to produce damaging wind and large hail across lower southern Maryland.
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 3, 2:13 PM EST, 1 hour 25 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 313 PM EDT THU JUN 3 2010 .SYNOPSIS... A COLD FRONT WILL MOVE INTO PENNSYLVANIA THIS AFTERNOON BEFORE STALLING NORTH OF THE AREA TONIGHT AND FRIDAY. HIGH PRESSURE OVER THE WESTERN ATLANTIC WILL CONTINUE TO SUPPLY A WARM AND HUMID AIRMASS TO THE MID-ATLANTIC REGION THROUGH THE WEEKEND. THE COLD FRONT WILL FINALLY PUSH THROUGH THE AREA SUNDAY EVENING WITH COOLER AND LESS HUMID CONDITIONS BEHIND THE FRONT FOR EARLY NEXT WEEK. && .NEAR TERM /THROUGH TONIGHT/... AFTER COORDINATION WITH SPC...HAVE POSTED SEVERE TSTM WATCH BOX 251 FOR THE ENTIRE CWA. THE WATCH IS IN EFFECT UNTIL 9 PM. CONVECTION CURRENTLY OVER THE POTOMAC HIGHLANDS/SHENANDOAH VALLEY WILL CONTINUE TO INCREASE IN COVERAGE/INTENSITY AS IT MOVES EAST DURING THE MID-AFTN. HAVE ALSO INCREASED POPS ACCORDINGLY WITH COVERAGE LIKELY WIDESPREAD THRU THE REST OF THE AFTN AS THE ORGANIZING LINE MOVES THRU. SFC LOW IS NOTED OVER NEW ENGLAND THIS MRNG...WITH WEAK CDFNT STRETCHED ACRS CNTRL NY. MID- ATLC RGN LOCATED IN VERY MOIST WARM SECTOR CHARACTERIZED BY DEWPTS IN UPR 60S-LWR 70S. ALOFT ...MID- LVL FLOW OF 30-35 KT WILL PERSIST. LOW- AMPLITUDE SHRTWV TROF APRCHG WRN GRTLKS WILL CONT ITS ESEWD PATH TDA. CU FIELD BGNG TO DVLP OVER HIGHLANDS AMID STG HEATING. TERRAIN CIRCULATIONS XPCD TO PROMOTE LOCALIZED CNVGNC...AND MAY GENERATE SCT SHRA/TSRA EARLY THIS AFTN. SFC TROF AXIS ASSOCIATED WITH SFC LOW OVER NEW ENGLAND WILL RESULT IN ENHANCED CNVGNC ALONG AND JUST E OF BLUE RDG...WHERE FOCUSED TSTM DVLPMT XPCD LATER THIS AFTN AS SHRTWV TROF NEARS. CELLS WILL INITIALLY BE ISOLD. GIVEN CAPE OF 1500-2500 J/KG...STG UPDRAFTS CAPABLE OF SVR HAIL AND DMGG WIND GUSTS WILL BE PSBL. SHEAR VECTOR IS AT A FAVORABLE ANGLE FOR EVENTUAL UPSCALE GROWTH OF ISOLD CELLS INTO LINEAR SYSTEM LATE THIS AFTN. CVRG OF TSTMS SHUD DIMINISH LATE THIS EVE ONCE HEATING SUBSIDES AND UPR SHRTWV TROF PASSES THRU. LINEAR SYSTEM WILL TRANSLATE SEWD OUT OF FCST AREA BY LATE TNGT. MSTR WILL RMN IN PLACE AND SHUD LMT COOLING OVNGT. HOWEVER...PATCHY FOG MAY DVLP WHERE RAIN FALLS TDA. PREV DISCUSSION FOLLOWS... 03Z SFC ANLYS SHOWED WK FNT OVR THE ERN GRT LAKES. UPR FLOW WL STAY IN A SOMEWHAT ZNL PATN TDA...WHICH WL PROHIBIT AN ACTUAL FROPA IN THE MID ATLC. HOWEVER THIS WL KEEP THE CWA IN A JUICED ATMOSPHERE W/ PLENTY OF CAPE TO WORK W/ THIS AFTN. CAPES INXS OF 1500 THIS AFTN W/ A UNIDIRECTIONAL WRLY STEERING FLOW WL CREATE AN ENVIRONMENT CONDUCIVE TO TSTM DVLPMNT W/ THE PSBLTY OF STRNG STRAIGHT LN WINDS. WRF IS PAINTING A PICTURE OF CNVCTN BRKG OUT E OF THE MTNS ARND 20Z...WHICH SEEMS PLAUSIBLE..ALTHO BEST DYNAMICS FOR SVR PRBLY ACROSS PA/NY GIVEN STRONGER UPR WIND FIELD. STILL - SPC HAS THE AFORE MENTIONED PART OF OUR CWA IN SLT RISK - THIS WL BE HIGHLIGHTED IN THE HWO. YDAS TEMPS REACHED 85-90...AND TDA SHOULD BE SIMILAR W/ THE XCPTN THAT DWPTS SHOULD BE A COUPLE OF DEGS HIGHER...WHICH WL PROVIDE MORE FUEL FOR THE FIRE SHOULD A LN OF CNVCTN FORM THIS AFTN. THE FRNT SHOULD BE RMN N OF THE CWA OVRNGT...LVG AREA IN MOISTURE RICH (IE "HUMID") ENVIRONMENT. CNVCTN WL BE A CONCERN THIS EVE...THEN DIMINISHING OVRNGT. TEMPS TO RANGE FM THE L60S IN THE HIGHLANDS TO THE L70S IN THE CITIES. && .SHORT TERM /6 AM FRIDAY MORNING THROUGH FRIDAY NIGHT/... WARM AND MOIST AMS WILL RMN IN PLACE ON FRI AS SFC LOW DPNS ACRS WRN GRTLKS RGN IN ASSOCIATION WITH A SHRTWV TROF. OVER THE MID- ATLC...NO CLR SHRTWV TROF PRESENTS ITSELF IN THE MODELS. INSTBY WILL BE PRESENT...BUT LIFT XPCD TO BE MINIMAL. THUS...CVRG OF TSTMS SHUD BE RELATIVELY LOW. BEST CHCS WILL BE ON HIGHER TERRAIN IN THE SW. ANY TSTMS THAT FORM FARTHER E WILL BE LATE IN THE AFTN AROUND PEAK HEATING. MAXIMA SIMILAR TO THOSE TDA...UPR 80S-LWR 90S. THE MID-ATLANTIC WILL BE EMBEDDED IN QUASI-ZONAL FLOW FRI NGT...WITH AN UPPER SHORTWAVE DISTURBANCE/WEAK SFC LOW TRACKING FROM THE GREAT LAKES INTO SRN ONTARIO. PRIMARY W-E ORIENTED FRONTAL BOUNDARY WILL REMAIN WELL NORTH OF THE AREA IN UPSTATE NY/CENTRAL NEW ENGLAND. THE ZONAL FLOW WILL PREVENT THESE SYSTEMS FROM PROGRESSING SOUTHWARD TOWARD THE AREA. ANY LINGERING CONVECTION FRI AFTN WILL QUICKLY DIMINISH IN COVERAGE AND INTENSITY FRI EVE WITH THE LOSS OF DAYTIME HEATING AND NO DISTINGUISHABLE LIFTING MECHANISM TO KEEP CONVECTION GOING. WARM AND HUMID CONDITIONS WILL CONTINUE FRI NGT WITH LOWS ONLY FALLING INTO THE MU60S TO LOW 70S IN THE CITIES. PATCHY FOG ALSO POSSIBLE BY THE ERY MRNG SAT IN AREAS THAT RECEIVED RAINFALL ON FRI. && .LONG TERM /SATURDAY THROUGH THURSDAY/... A SERIES OF WEAK SHORTWAVE DISTURBANCES WILL ROTATE AROUND THE BASE OF THE UPPER LOW CENTERED AROUND NRN QUEBEC. THESE DISTURBANCES WILL TRACK WELL NORTH OF THE AREA THIS WEEKEND...BUT WILL HELP DIG THE BASE OF THE TROUGH SOUTHWARD WHILE ENHANCING NW FLOW IN WAKE OF EACH DISTURBANCE. AS A RESULT...THE ENE-WSW ORIENTED FRONTAL BOUNDARY WILL BEGIN TO DROP SOUTHWARD AND TOWARD THE AREA LATE SAT INTO SUN. WITH A WARM-MOIST ATMOSPHERE SOUTH OF THE REGION AND INCREASING SHEAR PROFILES...MORE SHOWERS AND TSTMS WILL DEVELOP DURING THE AFTN/EVE HRS SAT AND SUN. DEPENDING ON THE AMOUNT OF BREAKS IN THE CLDS/DAYTIME HEATING...SOME STORMS MAY BECOME STRONG TO SEVERE BOTH DAYS. THE COLD FRONT IS FORECASTED TO PUSH THRU THE AREA SOMETIME ON SUN. IF THE FRONT DOESNT PUSH THRU UNTIL LATER IN THE DAY...AND THE ATMOSPHERE CAN SUFFICIENTLY DESTABILIZE...SUN INSTEAD OF SAT WOULD BE THE MOST FAVORABLE DAY FOR SEVERE TSTMS. ONCE THE FRONT PUSHES THRU...COOLER AND DRIER AIR WILL MOVE INTO THE MID-ATLANTIC REGION ERY NEXT WEEK AS HIPRES BUILDS ACROSS THE REGION. THE HIGH IS FORECASTED TO MOVE OFF THE COAST BY MIDWEEK AS THE NEXT LOPRES SYSTEM APPROACHES FROM THE WEST. INCREASED POPS TO 30-40 PERCENT BY WED/WED NGT TO REFLECT THE UNSETTLED WX ACCOMPANYING THIS SYSTEM. && .AVIATION /19Z THURSDAY THROUGH TUESDAY/... VFR CONDS PERSIST THRU EARLY AFTN...WHEN TSTM CVRG XPCD TO INCR ON HIGHER TERRAIN AND ALONG SFC TROF AXIS. TSTMS WILL BE IN VCTY KMRB AND KCHO BTWN 18-20Z AND VCTY RMNG TERMINALS 20-22Z. IFR VSBYS OR BLW WILL BE PSBL IN TSTMS...WHICH WILL ALSO BE CAPABLE OF LARGE HAIL AND DMGG WIND GUSTS. CVRG OF TSTMS WILL WANE THIS EVE. MVFR FOG LKLY LATE TNGT AT TERMINALS WHERE RAIN FALLS. A WARM MOIST AIRMASS WILL YIELD SCT SHRA/TSRA MAINLY DURING THE AFTN EVE HRS FRI THRU SUN. THIS PERIOD WILL BE CATEGORIZED BY GENERALLY VFR CONDITIONS WITH SUBVFR CONDITIONS POSSIBLE IN THE VICINITY OF TSTMS AND ALSO DURING THE ERY MRNG HRS WITH LOCAL RADIATIONAL FOG. ISO STORMS MAY BE STRONG AND CAPABLE OF PRODUCING LARGE HAIL/GUSTY WINDS ESPECIALLY ON SAT AND SUN. A COLD FRONT WILL PUSH THRU THE TERMINALS SUN AFTN-SUN NGT...BRINGING AN END TO TSRA CHANCES THRU THE FIRST PART OF THE WORK WEEK. && .MARINE... WINDS WILL RMN BLW SMALL CRAFT ADZY THRESHOLDS THRU TNGT. TSTMS LKLY WILL IMPACT WATERS THIS AFTN AND EVE. SPECIAL MARINE WRNGS ARE LKLY. A NEARLY STATIONARY FRONTAL BOUNDARY REMAINING NORTH OF THE AREA FRI AND SAT WILL RESULT IN AFTN/EVE CHANCES FOR TSTMS AS THE REGION IS LOCATED IN THE WARM MOIST SECTOR. SPECIAL MARINE WARNINGS MAY NEED TO BE ISSUED FOR THE STRONGEST STORMS. THE FRONT WILL FINALLY PUSH THRU THE AREA SUN WITH ANOTHER ROUND OF SHOWERS AND STRONG TSTMS. WINDS SHOULD STAY BELOW SCA CRITERIA THRU ERY NEXT WEEK...BUT MAY APPROACH 14-17 KT DURING THE DAY SAT AND AGAIN SUN NGT WHEN THE FRONT PUSHES THRU. && .LWX WATCHES/WARNINGS/ADVISORIES... DC...NONE. MD...NONE. VA...NONE. WV...NONE. MARINE...NONE. && KRAMAR/KLEIN
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 148 PM EDT THU JUN 3 2010 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- 148 PM EDT THU JUN 3 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...THIS AFTERNOON AND TONIGHT A SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 900 PM FOR OUTLOOK AREA. STORMS ARE EXPECTED TO IMPACT THE BALTIMORE AND WASHINGTON METROPOLITAN AREAS BETWEEN 300 PM AND 600 PM. SCATTERED THUNDERSTORMS CAPABLE OF LARGE HAIL AND DAMAGING WIND GUSTS ARE EXPECTED. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY ISOLATED TO SCATTERED THUNDERSTORMS WILL BE POSSIBLE FRIDAY THROUGH SUNDAY AS A MOIST AND UNSTABLE AIRMASS REMAINS IN PLACE. A FEW STORMS COULD BECOME SEVERE EACH DAY AND WILL BE CAPABLE OF LARGE HAIL AND ISOLATED DAMAGING WIND GUSTS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS LIKELY THIS AFTERNOON AND EVENING...AND MAY BE NEEDED ON SATURDAY. MDZ003>005-009-010-501-502-VAZ021-025>031-036>040-042-050-051-501- 502-WVZ050>055-501>504-041000- 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- 148 PM EDT THU JUN 3 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...THIS AFTERNOON AND TONIGHT A SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 900 PM FOR OUTLOOK AREA. SCATTERED THUNDERSTORMS CAPABLE OF LARGE HAIL AND DAMAGING WIND GUSTS ARE EXPECTED. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY ISOLATED TO SCATTERED THUNDERSTORMS WILL BE POSSIBLE FRIDAY THROUGH SUNDAY AS A MOIST AND UNSTABLE AIRMASS REMAINS IN PLACE. A FEW STORMS COULD BECOME SEVERE EACH DAY AND WILL BE CAPABLE OF LARGE HAIL AND ISOLATED DAMAGING WIND GUSTS. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ACTIVATED FOR THE SEVERE THUNDERSTORM WATCH WHICH IS IN EFFECT UNTIL 900 PM...AND MAY BE NEED TO BE ACTIVATED ON SATURDAY. LEE
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
338 PM EDT THU JUN 03 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0335 PM TSTM WND GST EARLYSVILLE 38.16N 78.48W
06/03/2010 E60 MPH ALBEMARLE VA PUBLIC
OBSERVED A TREE BLOWING DOWN IN VERY HIGH WIND
&&
EVENT NUMBER LWX1000344
KRAMARSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
347 PM EDT THU JUN 3 2010
VAZ037-032015-
ALBEMARLE VA-
347 PM EDT THU JUN 3 2010
...STRONG THUNDERSTORMS TO AFFECT ALBEMARLE COUNTY...
AT 348 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 3 MILES
NORTHWEST OF NORTH GARDEN...MOVING EAST AT 15 MPH.
STORM INTENSITY IS INCREASING...AND SEVERE WEATHER MAY DEVELOP
RAPIDLY. REMAIN ALERT...AND BE PREPARED TO TAKE ACTION IF WARNINGS
ARE ISSUED.
WIND GUSTS OF 40 TO 50 MPH AND SMALL HAIL CAN BE EXPECTED WITH THIS
STORM.
&&
LAT...LON 3811 7866 3805 7856 3805 7828 3789 7842
3784 7871 3805 7882
TIME...MOT...LOC 1948Z 254DEG 15KT 3797 7866PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
348 PM EDT THU JUN 03 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0343 PM HAIL 1 SW BARRACKS 38.05N 78.52W
06/03/2010 E0.75 INCH ALBEMARLE VA TRAINED SPOTTER
ALONG OLD IVY ROAD
&&
EVENT NUMBER LWX1000345
KRAMARPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
407 PM EDT THU JUN 03 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0326 PM TSTM WND DMG 3 SSW CAPON SPRINGS 39.09N 78.50W
06/03/2010 FREDERICK VA 911 CENTER
TREES DOWN ON WARDENSVILLE RD NEAR PADDYS COVE LN
&&
EVENT NUMBER LWX1000347
JACKSONPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
422 PM EDT THU JUN 03 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0345 PM TSTM WND DMG 1 N CHARLOTTESVILLE 38.06N 78.49W
06/03/2010 ALBEMARLE VA TRAINED SPOTTER
FIVE TREES DOWN ON HWY 250 BETWEEN HYRDAULIC RD AND
DAIRY RD
&&
EVENT NUMBER LWX1000348
JACKSONPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
425 PM EDT THU JUN 03 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0422 PM TSTM WND DMG 1 NNW CHARLOTTESVILLE 38.05N 78.50W
06/03/2010 ALBEMARLE VA TRAINED SPOTTER
THREE LARGE TREES DOWN...TWO UPROOTED...ON BARRACKS RD
BETWEEN EMMET RD AND RUGBY RD
&&
EVENT NUMBER LWX1000350
JACKSONThe Sterling radar (KLWX), 40 km away, was scanning. The volume nearest the first event began at 20:39 UTC.
9 thunderstorm wind. Local standard time, as filed.
A tree was down at Thurston Road and Route 80.
Trees and wires were down near Indian Head.
Trees and wires were down at Marshall Hall road and Fraser Road.
A tree was down along Sellner Road.
Multiple trees were down along Maddox Road.
Multiple trees were down along Point Lookout Road.
A tree was down along Plum Point Road near Cox Road.
Multiple trees down in the 24000 Block of Half Pone Road.
Tree was down on HG Truman Road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 2010Every state in 2010This day in weather historyWarnings in Maryland, June 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: 239203, 239204, 239205, 239206, 239207, 239209, 239208, 239210, 239211.