A cold front passed through during the early morning hours of the 2nd. The boundary triggered 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 passed through during the early morning hours of the 2nd. The boundary triggered showers and thunderstorms. Some thunderstorms were able to produce damaging wind gusts.
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 Jul 1, 11:51 PM EST, 37 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1251 AM EDT MON JUL 2 2012 .SYNOPSIS... A COLD FRONT WILL REMAIN NEARLY STATIONARY ACROSS THE MID ATLANTIC THROUGH EARLY TUESDAY. THE FRONT WILL BEGIN PUSHING NORTHWARD AS A WARM FRONT LATE TUESDAY AS A COLD FRONT APPROACHES FROM THE WEST. THE NEXT FRONT WILL MOVE ACROSS THE REGION ON INDEPENDENCE DAY. && .NEAR TERM /UNTIL 6 AM THIS MORNING/... OUTFLOW BOUNDARY APPARENT ON KLWX RADAR WILL CONTINUE TO PROVIDE FOCUS FOR ISOLATED TO SCATTERED DEVELOPMENT ALONG AND NORTH OVER THE NEXT COUPLE OF HOURS. HOWEVER...THE MID LEVEL INVERSION SEEN IN THE KIAD RAOB /16 TO 19 KFT/ HAS LIMITED UPPER LEVEL DEVELOPMENT AND THUS SEVERITY. WE WILL CONTINUE TO MONITOR THE ENVIRONMENT FOR ANY MORE SIGNIFICANT DEVELOPMENT. FOR NOW...EXPECT GARDEN VARIETY THUNDERSTORMS WITH BRIEF HEAVY DOWNPOURS...OCCASIONAL LIGHTNING...AND GUSTY WINDS UP TO 30 MPH. && .SHORT TERM /6 AM THIS MORNING THROUGH 6 PM TUESDAY/... ALTHOUGH TEMPERATURES WILL STILL BE IN THE 90S...MONDAY MAY BE THE MOST PLEASANT DAY OF THE WEEK AS THE FRONT PUSHES FURTHER SOUTH AND SLIGHTLY DRIER AIR MOVES INTO THE REGION. LOW TEMPERATURES WILL BE A COUPLE DEGREES COOLER ON MONDAY NIGHT COMPARED TO TONIGHT. THAT BEING SAID THERE IS STILL THE THREAT OF THUNDERSTORM ACTIVITY AND THE PROXIMITY OF THE FRONT MEANS THAT SOME OF IT MAY BECOME SEVERE. SPC HAS MOST OF THE FORECAST AREA UNDER A SLIGHT RISK FOR MONDAY. && .LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/... HOTTER AND MORE HUMID AIR SHOULD RETURN IN THE MIDDLE OF THE WEEK WITH THE NEXT COLD FRONT BEING HARD PRESSED TO MAKE MUCH OF A SOUTHWARD MOVEMENT EITHER INTO OR THROUGH OUR CWA. HIGH TEMPERATURES IN THE MID TO UPPER 90S WILL BE COMMON FROM WEDNESDAY ONWARD. THE RETURN OF HEAT AND HUMIDITY MEANS AN INCREASE IN THE CHANCES FOR THUNDERSTORM ACTIVITY. && .AVIATION /06Z MONDAY THROUGH FRIDAY/... SCATTERED THUNDERSTORMS WILL CONTINUE TO MOVE SOUTHEAST ACROSS THE BALT-WASH METRO THROUGH THE EARLY MORNING HOURS. EXPECT LOCALLY HEAVY RAIN...BRIEF IFR CONDITIONS...AND GUSTY WINDS UP TO 25 KT. THUNDERSTORM CHANCES CONTINUE THROUGH THE MIDDLE OF THIS WEEK... PARTICULARLY LATER TUESDAY INTO WEDNESDAY AS ANOTHER FRONT APPROACHES THE AREA. && .MARINE... ISOLATED THUNDERSTORMS WILL REACH THE CHESAPEAKE BAY THROUGH THE REST OF THE NIGHT. WE ARE EXPECTING WINDS TO REMAIN RELATIVELY LIGHT THROUGH THE SHORT TERM AND THE OVERALL THUNDERSTORM COVERAGE ON THE LOW SIDE. NO MARINE HEADLINES EXPECTED THROUGH THE NEXT FIVE DAYS...HOWEVER THUNDERSTORMS WILL REMAIN POSSIBLE EACH DAY ESPECIALLY IN THE AFTERNOON AND EVENING. && .LWX WATCHES/WARNINGS/ADVISORIES... DC...NONE. MD...NONE. VA...NONE. WV...NONE. MARINE...NONE. && UPDATE...JACKSON
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1232 AM EDT MON JUL 2 2012 ANZ530>543-DCZ001-MDZ006-007-011-013-014-016>018-VAZ052>057- 020945- 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- 1232 AM EDT MON JUL 2 2012 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...TONIGHT ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED THROUGH THE EARLY MORNING HOURS ALONG AND NORTH OF A BOUNDARY DRIFTING SOUTH THROUGH THE WASHINGTON DC METRO AREA. A FEW OF THESE STORMS WILL HAVE THE POTENTIAL TO BECOME SEVERE AND PRODUCE DAMAGING WIND GUSTS AND LARGE HAIL. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY ISOLATED TO SCATTERED THUNDERSTORMS ARE POSSIBLE THROUGH THE WEEK. THE BEST CHANCES FOR ORGANIZED CONVECTION AND STRONGER STORMS ARE ON TUESDAY AND WEDNESDAY. HOTTER AND MORE HUMID WEATHER SHOULD ALSO RETURN IN THE MIDDLE OF THE WEEK WITH HEAT INDICES APPROACHING 105. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS POSSIBLE OVERNIGHT. LIMITED SPOTTER ACTIVATION MAY BE NEEDED TUESDAY AND WEDNESDAY. MDZ003>005-009-010-501-502-VAZ025>031-036>040-042-050-051-501>504- WVZ050>053-055-501>506-020945- 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- 1232 AM EDT MON JUL 2 2012 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...TONIGHT A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR THE SHENANDOAH VALLEY...THE EASTERN WEST VIRGINIA PANHANDLE AND WEST-CENTRAL MARYLAND...AND FOR NELSON COUNTY UNTIL 2 AM. THUNDERSTORMS CONTINUE TO HAVE THE POTENTIAL TO BECOME SEVERE WITH DAMAGING WIND GUSTS AND LARGE HAIL. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY ISOLATED TO SCATTERED THUNDERSTORMS ARE POSSIBLE THROUGH THE WEEK. THE BEST CHANCES FOR ORGANIZED CONVECTION AND STRONGER STORMS ARE ON TUESDAY AND WEDNESDAY. HOTTER AND MORE HUMID WEATHER SHOULD ALSO RETURN IN THE MIDDLE OF THE WEEK WITH HEAT INDICES APPROACHING 105 EAST OF THE BLUE RIDGE. .SPOTTER INFORMATION STATEMENT... SPOTTERS HAVE BEEN ACTIVATED. LIMITED SPOTTER ACTIVATION MAY BE NEEDED TUESDAY AND WEDNESDAY.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1115 PM EDT SUN JUL 1 2012 WVZ050-504-020345- HAMPSHIRE WV-EASTERN MINERAL WV- 1115 PM EDT SUN JUL 1 2012 ...STRONG THUNDERSTORM TO AFFECT HAMPSHIRE AND EASTERN MINERAL COUNTIES... AT 1116 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 4 MILES WEST OF SPRINGFIELD...MOVING SOUTHEAST AT 25 MPH. LOCATIONS IMPACTED INCLUDE SPRINGFIELD...WAPOCOMO...THREE CHURCHES... POINTS...HIGGINSVILLE AND SHANKS. 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 3945 7853 3928 7866 3943 7882 3951 7876 TIME...MOT...LOC 0316Z 305DEG 21KT 3944 7875 KRAMAR
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1211 AM EDT MON JUL 2 2012 MDZ003-WVZ053-020445- WASHINGTON MD-JEFFERSON WV- 1211 AM EDT MON JUL 2 2012 ...STRONG THUNDERSTORM TO AFFECT WASHINGTON AND JEFFERSON COUNTIES... AT 1212 AM EDT...A STRONG THUNDERSTORM WAS LOCATED OVER SHEPHERDSTOWN...MOVING SOUTHEAST AT 15 MPH. LOCATIONS IMPACTED INCLUDE ANTIETAM AND BROWNSVILLE. SMALL HAIL CAN BE EXPECTED WITH THIS STORM. && LAT...LON 3939 7765 3932 7770 3944 7786 3947 7780 TIME...MOT...LOC 0412Z 314DEG 15KT 3943 7779 KRAMAR
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1223 AM EDT MON JUL 2 2012 DCZ001-MDZ013-020445- DISTRICT OF COLUMBIA DC-PRINCE GEORGES MD- 1223 AM EDT MON JUL 2 2012 ...STRONG THUNDERSTORM TO AFFECT THE DISTRICT OF COLUMBIA...PRINCE GEORGES COUNTY... AT 1223 AM EDT...A STRONG THUNDERSTORM WAS LOCATED OVER SEAT PLEASANT...MOVING SOUTHEAST AT 20 MPH. LOCATIONS IMPACTED INCLUDE LARGO AND FORESTVILLE. SMALL HAIL CAN BE EXPECTED WITH THIS STORM. && LAT...LON 3886 7674 3881 7680 3889 7694 3894 7690 TIME...MOT...LOC 0423Z 304DEG 18KT 3889 7688 STRONG
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1224 AM EDT MON JUL 2 2012 VAZ028-WVZ051-052-020445- MORGAN WV-BERKELEY WV-FREDERICK VA- 1224 AM EDT MON JUL 2 2012 ...STRONG THUNDERSTORM TO AFFECT MORGAN...BERKELEY AND FREDERICK COUNTIES... AT 1225 AM EDT...A STRONG THUNDERSTORM WAS LOCATED OVER UNGER... MOVING EAST AT 30 MPH. LOCATIONS IMPACTED INCLUDE SHANGHAI...GLENGARY AND GERRARDSTOWN. SMALL HAIL CAN BE EXPECTED WITH THIS STORM. && LAT...LON 3946 7806 3936 7808 3941 7830 3947 7828 TIME...MOT...LOC 0425Z 278DEG 25KT 3943 7823 KRAMAR
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 1247 AM EDT MON JUL 2 2012 MDZ009-010-020515- MONTGOMERY MD-HOWARD MD- 1247 AM EDT MON JUL 2 2012 ...STRONG THUNDERSTORM TO AFFECT MONTGOMERY AND HOWARD COUNTIES... AT 1248 AM EDT...A STRONG THUNDERSTORM WAS LOCATED 4 MILES NORTH OF LAYTONSVILLE...MOVING SOUTHEAST AT 25 MPH. LOCATIONS IMPACTED INCLUDE LAYTONSVILLE AND BROOKEVILLE. SMALL HAIL CAN BE EXPECTED WITH THIS STORM. && LAT...LON 3921 7701 3916 7708 3925 7722 3930 7717 TIME...MOT...LOC 0448Z 311DEG 20KT 3926 7716 KRAMAR
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
128 AM EDT MON JUL 02 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1242 AM HAIL 2 S DAMASCUS 39.25N 77.20W
07/02/2012 E0.75 INCH MONTGOMERY MD TRAINED SPOTTER
&&
EVENT NUMBER LWX1200777
HASThe Sterling radar (KLWX), 74 km away, was scanning. The volume nearest the first event began at 05:29 UTC.
2 thunderstorm wind. Local standard time, as filed.
Two trees fell into houses in Westview.
A wind gust of 60 mph was reported.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 2012Every state in 2012This day in weather historyWarnings in Maryland, July 2012
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: 404524, 404525.