An approaching cold front helped trigger strong to severe thunderstorms during the evening of the 28th in the Maryland Eastern Shore.
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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 PHI wrote it up.
An approaching cold front helped trigger strong to severe thunderstorms during the evening of the 28th in the Maryland Eastern Shore.
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 Philadelphia/Mount Holly wrote its last area forecast discussion before the first event at Jun 28, 9:36 PM EST, 24 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1036 PM EDT THU JUN 28 2007 .SYNOPSIS... A COLD FRONT WILL CROSS THE AREA TONIGHT AND IT WILL BE ACCOMPANIED BY SHOWERS AND THUNDERSTORMS. SOME OF THE THUNDERSTORMS WILL BE SEVERE WITH LARGE HAIL AND STRONG WINDS POSSIBLE. HIGH PRESSURE WILL BUILD IN BEHIND THE FRONT THIS WEEKEND. THE HIGH WILL HAVE DRIER AND LESS HUMID AIR WITH IT. && .NEAR TERM /THROUGH FRIDAY/... SEVERE THUNDERSTORM WATCH NUMBER 461 IS IN EFFECT UNTIL 11 PM FOR THE ENTIRE CWA. DECENT CAPES AND SOME DYNAMICS HAVE CAUSED THUNDERSTORMS TO FIRE ACROSS PA AND THE DELMARVA ALREADY AND MORE STORMS WILL MOVE ACROSS THE REGION TONIGHT. LIKELY POPS WITH ENHANCED SVR WORDING WILL BE IN ALL ZONES THROUGH THE EVENING. THE ACTIVITY WILL DIMINISH FROM NW TO SE TONIGHT AND THE EFFECTS FOR THE DAYTIME HEATING DWINDLE AND THE FRONT MOVES THROUGH. && .SHORT TERM /FRIDAY NIGHT/... WRF/GFS MODELS SHOW SOME LINGERING CLOUDS LATE TONIGHT INTO FRIDAY AS THE FRONT SLOWS DOWN TO OUR SOUTH. A FEW SHOWERS ARE POSSIBLE FRIDAY ACROSS THE SRN PARTS OF THE AREA...SO I HAVE DRAWN IN A 30 FOR THOSE AREAS. A REINFORCING SHOT OF DRIER AIR...BEHIND A SECOND FRONT...WILL THEN TAKE HOLD FRIDAY NIGHT. DRY WEATHER IS EXPECTED FRI NIGHT THROUGH SUNDAY. && .LONG TERM /SATURDAY THROUGH THURSDAY/... HPC GUIDANCE FOLLOWED IN THE EXTENDED PERIOD. PUT SIMPLY, HIGH PRESSURE CROSSES THE AREA DURING THE FIRST PART OF THE EXTENDED PERIOD AND THEN PASSES TO THE EAST NEXT WEEK. ONCE THE HIGH PASSES OFF THE COAST...WARMER AND MORE HUMID AIR RETURNS FOR THE MIDDLE OF THE UPCOMING WEEK. TEMPERATURES WILL BE SLIGHTLY BELOW NORMAL THE THE FIRST PART OF THE PERIOD AND THEN GO BACK ABOVE NORMAL FOR WEDNESDAY AND THURSDAY. THE ONLY RAINFALL IN THE EXTENDED PERIOD WILL BE FOR THE LAST TWO DAYS OF THE PERIOD WHEN SCATTERED SHOWERS OR THUNDERSTORMS WILL BE POSSIBLE. && .AVIATION /03Z FRIDAY THROUGH TUESDAY/... WE START WITH VFR CONDITIONS EVERYWHERE WITH MID CLOUD CIGS. HOWEVER, CONVECTION IS EXPECTED TO DROP INTO THE REGION LATER THIS AFTERNOON, AND IN FACT A SEVERE THUNDERSTORM WATCH COVERS ALL TAF SITES UNTIL 03Z. WE HAVE TRIED TO TIME THE ORGANIZED ACTIVITY, BUT A COMPLICATING ISSUE WAS SCATTERED ACTIVITY OUT AHEAD OF THE MORE ORGANIZED LINE WAS BEGINNING TO DEVELOP. WE THEN TIME THE FRONT AS MOVING THROUGH OUR TAF SITES FROM LATE THIS EVENING IN THE NW TO AFTER MIDNIGHT IN THE SE. SOME DRYING IS PROGGED TO OCCUR BEHIND THE FRONT, ALTHOUGH IT IS NOT SO STRONG THAT THE MORE SHELTERED SITES ARE CERTAIN TO SCOUR OUT WITH REGARDS TO VSBYS, AND WE KEEP SOME MVFR CONDITIONS THROUGH DAYBREAK THERE. THEN, THE MODELS ARE LESS EMPHATIC ABOUT KEEPING SHOWERS AROUND EVEN THE SRN TAF SITES, EVEN THOUGH THEY STILL CARRY A SECONDARY BOUNDARY APPROACHING THE AREA. RATHER THAN LOAD THE LAST PERIOD OF THE TAFS WITH TEMPOS AND PROBS, WE SIMPLY KEEP SOME VFR MID CLOUDS AND CARRY NO VSBY RESTRICTIONS. THEN, AFTER THE SECONDARY BOUNDARY MOVES ACROSS THE REGION FRIDAY NIGHT, HIGH PRESSURE IS FORECAST TO BUILD ACROSS MOST OF THE REGION. OUR WEATHER SHOULD IMPROVE FROM NORTH TO SOUTH. THE HIGH WILL INFLUENCE THE WEATHER INTO TUESDAY, THEN A FRONTAL SYSTEM MAY APPROACH AND BRING A CHANCE OF SHOWER ACTIVITY BEGINNING AROUND WEDNESDAY. && .MARINE... WE ARE FORECASTING NO SMALL CRAFT ADVISORY CONDITIONS THROUGH THE PERIOD, BUT ANY SEVERE THUNDERSTORMS THAT MOVE OVER THE WATERS WOULD CAUSE VERY HAZARDOUS CONDITIONS. PLEASE STAY ALERT TO ANY SPECIAL MARINE WARNINGS THAT MAY BE ISSUED THROUGH THIS EVENING. WE HAVE THE FRONT CROSSING THE WATERS OVERNIGHT, WITH A WEAKER SECONDARY BOUNDARY CROSSING THE WATERS FRIDAY NIGHT. THESE WILL CAUSE SOME WIND SHIFTS, BUT WINDS WILL REMAIN BELOW 25 KT. WAVEWATCH SEAS DO NOT COME UP TO 5 FT THROUGH THE CWF FORECAST PERIOD. JUNE 24 THROUGH 30 IS LIGHTNING SAFETY WEEK. IF YOU GO TO OUR WEB SITE AT WWW.WEATHER.GOV/PHI YOU CAN CLICK ON LIGHTNING SAFETY AWARENESS WEEK AND SCROLL DOWN TO LIGHTNING SAFETY OUTDOORS AND SEE THE SAFETY RULES FOR ON THE WATER. && .PHI WATCHES/WARNINGS/ADVISORIES... PA...NONE. NJ...NONE. DE...NONE. MD...NONE. MARINE...NONE. && SYNOPSIS...PO NEAR TERM...PO & SHORT TERM/LONG TERM...PO AVIATION/MARINE...DELISI & GIGI
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 905 PM EDT THU JUN 28 2007 NJZ001-007>010-012>015-PAZ054-055-060>062-067>069-300115- SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-WESTERN MONMOUTH- EASTERN MONMOUTH-MERCER-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON- CHESTER-MONTGOMERY-BUCKS- 905 PM EDT THU JUN 28 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW JERSEY...NORTHERN NEW JERSEY...EAST CENTRAL PENNSYLVANIA...NORTHEAST PENNSYLVANIA AND SOUTHEAST PENNSYLVANIA. .DAY ONE...TONIGHT NO HAZARDOUS WEATHER IS EXPECTED. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY NO HAZARDOUS WEATHER IS EXPECTED. .SPOTTER INFORMATION STATEMENT... SKYWARN ACTIVATION IS NOT EXPECTED. DEZ001>004-MDZ008-012-015-019-020-NJZ016>027-PAZ070-071-300115- NEW CASTLE-KENT DE-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD- QUEEN ANNES-TALBOT-CAROLINE-SALEM-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY- ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN- SOUTHEASTERN BURLINGTON-DELAWARE-PHILADELPHIA- 905 PM EDT THU JUN 28 2007 ...SEVERE THUNDERSTORM WATCH 461 IN EFFECT UNTIL 11 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL DELAWARE...NORTHERN DELAWARE...SOUTHERN DELAWARE...EASTERN MARYLAND...NORTHEAST MARYLAND...SOUTHERN NEW JERSEY AND SOUTHEAST PENNSYLVANIA. .DAY ONE...TONIGHT PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. THERE IS A RISK OF SEVERE THUNDERSTORMS THIS EVENING. ANY OF THE THUNDERSTORMS MAY PRODUCE HEAVY RAIN IN A SHORT TIME, LEADING TO LOCALIZED OR EVEN SCATTERED AREAS OF FLOODING, ESPECIALLY ON ROADS AND IN POOR-DRAINAGE AREAS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY NO HAZARDOUS WEATHER IS EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED. ANZ430-431-450>455-300115- DELAWARE BAY WATERS NORTH OF EAST POINT NJ TO SLAUGHTER BEACH DE- DELAWARE BAY WATERS SOUTH OF EAST POINT NJ TO SLAUGHTER BEACH DE- COASTAL WATERS FROM SANDY HOOK TO MANASQUAN INLET NJ OUT 20 NM- COASTAL WATERS FROM MANASQUAN INLET TO LITTLE EGG INLET NJ OUT 20 NM- COASTAL WATERS FROM LITTLE EGG INLET TO GREAT EGG INLET NJ OUT 20 NM- COASTAL WATERS FROM GREAT EGG INLET TO CAPE MAY NJ OUT 20 NM- COASTAL WATERS FROM CAPE MAY NJ TO CAPE HENLOPEN DE OUT 20 NM- COASTAL WATERS FROM CAPE HENLOPEN TO FENWICK ISLAND DE OUT 20 NM- 905 PM EDT THU JUN 28 2007 ...SEVERE THUNDERSTORM WATCH 461 IN EFFECT UNTIL 11 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS AND DELAWARE BAY WATERS. .DAY ONE...TONIGHT PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS EVENING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY NO HAZARDOUS WEATHER IS EXPECTED. SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED. TFG
The Dover AFB radar (KDOX), 70 km away, was scanning. The volume nearest the first event began at 02:58 UTC.
1 thunderstorm wind. Local standard time, as filed.
A severe thunderstorm knocked down several trees and wires in and around Chestertown. Power was lost at some homes and businesses for up to 10 hours.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 2007Every state in 2007This day in weather historyWarnings in Maryland, June 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: 42553.