A slow moving cold front helped trigger thunderstorms during the night of July 1st that produced both heavy downpours and frequent lightning.
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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.
A slow moving cold front helped trigger thunderstorms during the night of July 1st that produced both heavy downpours and frequent lightning.
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 Jul 1, 8:22 PM EST, 2 hours 43 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 922 PM EDT WED JUL 1 2009 .SYNOPSIS... AN APPROACHING UPPER LEVEL WEATHER DISTURBANCE WILL HELP SURFACE LOW PRESSURE DEVELOP OVER OUR AREA OVERNIGHT. THIS LOW WILL MOVE OFF THE COAST THURSDAY MORNING, BUT THE AIRMASS WILL REMAIN UNSTABLE THURSDAY. HIGH PRESSURE OVER THE OHIO VALLEY WILL BUILD SLOWLY TOWARD OUR REGION LATER THURSDAY THROUGH SATURDAY. LOW PRESSURE ALOFT WILL KEEP THE WEATHER PATTERN UNSETTLED THROUGH THE EARLY PART OF THE WEEKEND. && .NEAR TERM /THROUGH TONIGHT/... SHOWERS AND A FEW EMBEDDED STRONG THUNDERSTORMS WERE KNOCKING ON THE DOOR OF OUR SOUTHWESTERN ZONES AT 01Z...AND THIS WAS SIGNALING THE DETERIORATION OF CONDITIONS FOR THE OVERNIGHT PERIOD. IT WAS DECIDED TO LEAVE IN CATEGORICAL POPS FOR MOST OF THE AREA, EXCEPT LIKELY FAR SOUTHEAST, BUT CHANGE TO WORDING TO OCCASIONAL. SOME ENHANCED WORDING WAS ALSO ADDED FOR THE OVERNIGHT PERIOD, WITH A MENTION OF HAIL AND HEAVY RAINFALL DUE TO SOME OF THE CELLS HAVING RATHER TALL TOPS UP TO 40 THOUSAND FEET. SO, THIS NEXT VORTICITY MAXIMUM WILL SWING ACROSS OUR AREA OVERNIGHT AND INDUCE A WEAK SURFACE LOW TO FORM OVER OUR AREA. THE SEVERE STORMS PREDICTION CENTER HAS TRIMMED THE SLIGHT RISK AREA BACK A BIT FROM THE FAR NORTHERN ZONES, OTHERWISE IT WAS FELT THAT ANY SEVERE ACTIVITY WOULD BE PRETTY ISOLATED. PRECIPITABLE WATER VALUES ARE IN THE 1.5 TO 2.0 INCH RANGE OVERNIGHT, SO LOCALIZED FLOODING WILL BE A CONCERN TOO. THE OVERALL QPF EXPECTED AND FLOOD GUIDANCE VALUES SEEM TO PRECLUDE THE ISSUANCE OF ANY FLOOD WATCHES AT THIS TIME. && .SHORT TERM /THURSDAY THROUGH SATURDAY/... THE LAST FEW SHORT WAVES WILL MOVE AROUND THE UPPER LOW THURSDAY. THIS SHOULD KEEP PLENTY OF CLOUDS AND SHOWERS FIRST THING IN THE MORNING AND THEN MORE SCATTERED ACTIVITY DURING THE AFTERNOON AND EVENING. THE HIGHEST POPS WILL BE ACROSS THE NORTHERN HALF OF THE AREA THURSDAY AND THURSDAY NIGHT WITH CHC POPS OVER THE SOUTHERN DELMARVA. A SLOWLY IMPROVING WEATHER PICTURE IS FORESEEN FRI AND SAT AS THE UPPER LOW WEAKENS. A WEAK AREA OF HIGH PRESSURE OVER THE OHIO VALLEY WILL SLOWLY BUILD IN AND IT SHOULD BRING SOME DRIER AIR FOR OUR REGION. THERE WILL STILL BE A CHC FOR A SHOWER OR TSTM ACROSS THE NORTHERN AREAS FOR FRIDAY. && .LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/... THE UPPER LOW THAT WILL CREATE THE UNSETTLED WEATHER IN THE SHORTER RANGES OF THE FORECAST WILL BE LIFTING AWAY DURING THE LATER PART OF THE WEEKEND. UPPER HEIGHTS WILL INCREASE AND WEAK SURFACE HIGH PRESSURE WILL INFLUENCE THE WEATHER THROUGH THE EARLY PART OF NEXT WEEK. LITTLE IN THE WAY OF RAINFALL IS EXPECTED DURING THE PERIOD WITH POPS IN THE NONE OR SLGT CHC RANGE THROUGH THE PERIOD. THE HPC PROGS INDICATE A WEAK WAVE MOVING BY TO THE SOUTH SUN-MON, BUT NOTHING HIGHER THAN SLGT CHC POPS WILL BE NEEDED FOR THIS NOW. TEMPERATURES DURING THE EXTENDED PERIOD WILL BE CLOSE TO NORMAL FOR EARLY JULY WITH LOW TO MID 80S FOR HIGH TEMPERATURES AND LOWS RANGING FROM THE LOW TO MID 60S. && .AVIATION /01Z THURSDAY THROUGH MONDAY/... THE FOLLOWING DISCUSSION IS FOR KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY AND SURROUNDING AREAS. THERE HAVE BEEN SOME SCATTERED TSTMS THIS EVENING. HOWEVER, ALL SITES BUT KTTN WERE MISSED. THERE WILL STILL BE THE POSSIBILITY OF SHOWERS TSTMS OVER THE TAF SITES TONIGHT AND HAVE TRIED TO TIME THE OCCURRENCE OF ANY TSRA, BUT THEY HAVE BEEN IN NO HURRY TO ADVANCE N AND E. THE ONLY OTHER PROBLEM IS AT KACY, WHERE SOME LOW CLOUDS OVER THE OCEAN MOVED INLAND AND HAVE BROUGHT IFR CIGS. EXPECT THESE CIGS TO CONTINUE. THE POTENTIALLY GOOD NEWS HERE IS THAT THE STABLE AIR WHICH BROUGHT THE LOW CLOUDS MAY HELP KEEP TSRA AT BAY FOR KACY. A DISTURBANCE IN THE UPPER ATMOSPHERE WAS LOCATED OVER VIRGINIA WILL LIFT OVER OUR REGION OVERNIGHT. IT LOOKS AS THOUGH THE BETTER CHANCE FOR ORGANIZED THUNDERSTORM ACTIVITY WILL BE JUST OUT AHEAD OF THE DISTURBANCE. IT SEEMS AS THOUGH ADDITIONAL SHOWERS WILL LINGER OVERNIGHT, ONCE THE DISTURBANCE PASSES TO OUR NORTHEAST. THERE COULD ALSO BE SOME LOW CLOUDS AND VISIBILITY RESTRICTIONS. ANOTHER UPPER AIR DISTURBANCE MAY BRING ADDITIONAL THUNDERSTORMS TO OUR REGION BETWEEN 0800Z AND 1200Z ON THURSDAY. ONCE THE SECOND DISTURBANCE PASSES, GRADUAL CLEARING IS EXPECTED DURING THE COURSE OF THURSDAY MORNING. VFR CONDITIONS SHOULD PREVAIL FROM LATE THURSDAY MORNING INTO THURSDAY AFTERNOON. HOWEVER, SCATTERED SHOWERS AND THUNDERSTORMS REMAIN POSSIBLE ON THURSDAY AFTERNOON. OUTLOOK... THERE MAY BE ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS ON FRIDAY. MAINLY VFR CONDITIONS ARE EXPECTED FROM FRIDAY NIGHT INTO MONDAY. && .MARINE... WEAK LOW PRESSURE WILL LIFT TO THE NORTHEAST AND IT SHOULD PASS OVER OUR REGION ON THURSDAY MORNING. A SERIES OF WEAK FRONTAL BOUNDARIES FROM THE WEST AND NORTHWEST ARE EXPECTED FOR THE HOLIDAY WEEKEND. WITH NO STRONG WEATHER SYSTEMS ANTICIPATED, CONDITIONS SHOULD REMAIN BELOW SMALL CRAFT ADVISORY CRITERIA THROUGH MONDAY. HOWEVER, ANY THUNDERSTORMS COULD CAUSE WIND SPEEDS AND WAVES TO INCREASE IN THEIR VICINITY. && .PHI WATCHES/WARNINGS/ADVISORIES... PA...NONE. NJ...NONE. DE...NONE. MD...NONE. MARINE...NONE. && SYNOPSIS... / OHARA NEAR TERM... / OHARA SHORT TERM...OHARA LONG TERM...OHARA AVIATION...NIERENBERG / IOVINO MARINE...NIERENBERG / IOVINO
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 905 PM EDT WED JUL 1 2009 DEZ001>004-MDZ008-012-015-019-020-NJZ009-010-012>027-PAZ054-055- 060>062-067>071-030115- NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD- QUEEN ANNES-TALBOT-CAROLINE-HUNTERDON-SOMERSET-MIDDLESEX- WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY- ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN- SOUTHEASTERN BURLINGTON-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- 905 PM EDT WED JUL 1 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL DELAWARE...NORTHERN DELAWARE...SOUTHERN DELAWARE...NORTHEAST MARYLAND...CENTRAL NEW JERSEY...NORTHERN NEW JERSEY...NORTHWEST NEW JERSEY...SOUTHERN NEW JERSEY...EAST CENTRAL PENNSYLVANIA...NORTHEAST PENNSYLVANIA AND SOUTHEAST PENNSYLVANIA. .DAY ONE...TONIGHT. THE STORM PREDICTION CENTER HAS PLACED OUR AREA UNDER A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR TONIGHT. ISOLATED THUNDERSTORMS... MAINLY INTO THE EARLY OVERNIGHT PERIOD...COULD PRODUCE DAMAGING WIND GUSTS AND LARGE HAIL...AS WELL AS FREQUENT DANGEROUS CLOUD TO GROUND LIGHTNING AND HEAVY RAINFALL WHICH COULD CAUSE LOCALIZED FLOODING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. HAZARDOUS WEATHER IS NOT EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. NJZ001-007-008-030115- SUSSEX-WARREN-MORRIS- 905 PM EDT WED JUL 1 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN NEW JERSEY. .DAY ONE...TONIGHT. THE STORM PREDICTION CENTER HAS PLACED OUR AREA UNDER A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR TONIGHT. ISOLATED THUNDERSTORMS... MAINLY INTO THE EARLY OVERNIGHT PERIOD...COULD PRODUCE DAMAGING WIND GUSTS AND LARGE HAIL...AS WELL AS FREQUENT DANGEROUS CLOUD TO GROUND LIGHTNING AND HEAVY RAINFALL WHICH COULD CAUSE LOCALIZED FLOODING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. THE STORM PREDICTION CENTER HAS INDICATED THAT THERE IS A SLIGHT CHANCE FOR SEVERE THUNDERSTORMS AGAIN ON THURSDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. ANZ430-431-450>455-030115- 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 WED JUL 1 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS AND DELAWARE BAY WATERS. .DAY ONE...TONIGHT. THE STORM PREDICTION CENTER HAS PLACED OUR COASTAL WATERS AREA UNDER A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR TONIGHT. ISOLATED THUNDERSTORMS COULD PRODUCE HIGH WIND GUSTS AND LARGE HAIL...AS WELL AS FREQUENT DANGEROUS CLOUD TO SURFACE LIGHTNING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. HAZARDOUS WEATHER IS NOT EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 636 PM EDT WED JUL 1 2009 NJZ012-013-015-019-027-PAZ069-012330- BUCKS PA-MERCER NJ-MIDDLESEX NJ-NORTHWESTERN BURLINGTON NJ- SOUTHEASTERN BURLINGTON NJ-WESTERN MONMOUTH NJ- 636 PM EDT WED JUL 1 2009 ...STRONG THUNDERSTORMS WILL AFFECT BUCKS...BURLINGTON...MERCER... MIDDLESEX AND MONMOUTH COUNTIES... AT 635 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES EAST OF TRENTON TO 11 MILES SOUTH OF TRENTON...MOVING EAST AT 5 MPH. THE THUNDERSTORMS WILL BE NEAR WHITE HORSE AROUND 645 PM...EDINBURG AROUND 700 PM...FIELDSBORO AROUND 715 PM...WINDSOR AND JACKSONVILLE AROUND 730 PM. THESE STORMS HAVE FORMED ALONG THE BOUNDARY BETWEEN THE SEA BREEZE FRONT AND THE PREVIOUS STRONG THUNDERSTORMS IN BUCKS COUNTY. ANOTHER ISOLATED STRONG THUNDERSTORM WAS OVER PEMBERTON IN BURLINGTON COUNTY. VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO POND ON ROADS. WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS. EXPECT LIGHTNING FROM THESE STORMS. DO NOT SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN A THUNDERSTORM APPROACHES. TFG
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
817 PM EDT WED JUL 01 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0645 PM HAIL FLORENCE 40.11N 74.79W
07/01/2009 E0.25 INCH BURLINGTON NJ TRAINED SPOTTER
PEA SIZE HAIL IN FLORENCE.
0725 PM HAIL CREAM RIDGE 40.13N 74.52W
07/01/2009 E0.50 INCH MONMOUTH NJ TRAINED SPOTTER
DIME SIZE HAIL REPORTED IN CREAM RIDGE.
&&
NIERENBERG/AGNELLOSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 851 PM EDT WED JUL 1 2009 DEZ002-003-MDZ012-015-019-020-020245- CAROLINE MD-INLAND SUSSEX DE-KENT MD-KENT DE-QUEEN ANNES MD- TALBOT MD- 851 PM EDT WED JUL 1 2009 ...STRONG THUNDERSTORMS WILL AFFECT CAROLINE...KENT...QUEEN ANNES... SUSSEX AND TALBOT COUNTIES... AT 849 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN AREA OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 22 MILES WEST OF EASTON TO 54 MILES SOUTHWEST OF SALISBURY...MOVING EAST AT 30 MPH. THE THUNDERSTORMS WILL BE NEAR CHESTER...STEVENSVILLE AROUND 900 PM...GRASONVILLE...QUEENSTOWN AROUND 915 PM...CORDOVA...SKIPTON AROUND 930 PM...GRIFFIN...HILLSBORO AROUND 945 PM...DENTON AND GREENSBORO AROUND 1000 PM. VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. WIND GUSTS UP TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THE STRONGEST OF STORMS IN THIS AREA. EXPECT FREQUENT LIGHTNING FROM THESE STORMS. DO NOT SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN A THUNDERSTORM APPROACHES. TFG
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 901 PM EDT WED JUL 1 2009 PAZ054-060-061-020300- BERKS PA-CARBON PA-LEHIGH PA- 901 PM EDT WED JUL 1 2009 ...A STRONG THUNDERSTORM WILL AFFECT BERKS...AND POSSIBLY CARBON AND LEHIGH COUNTIES... AT 900 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 17 MILES WEST OF READING...MOVING NORTH AT 25 MPH. THE THUNDERSTORM WILL BE NEAR WERNERSVILLE AROUND 900 PM... WOMELSDORF...ROBESONIA AROUND 915 PM...STRAUSSTOWN...BERNVILLE AROUND 930 PM...PORT CLINTON...HAMBURG AROUND 945 PM...PORT CLINTON AND LENHARTSVILLE AROUND 1000 PM. VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. EXPECT SMALL HAIL AND FREQUENT...DANGEROUS CLOUD TO GROUND LIGHTNING FROM THIS STORM. WIND GUSTS TO AROUND 35 MPH ARE ALSO POSSIBLE. TFG
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1017 PM EDT WED JUL 1 2009 NJZ007-009-PAZ054-055-060>062-068-069-020415- BERKS PA-BUCKS PA-CARBON PA-HUNTERDON NJ-LEHIGH PA-MONROE PA- MONTGOMERY PA-NORTHAMPTON PA-WARREN NJ- 1017 PM EDT WED JUL 1 2009 ...STRONG THUNDERSTORMS WILL AFFECT BERKS...BUCKS...CARBON... HUNTERDON...LEHIGH...MONROE...MONTGOMERY...NORTHAMPTON AND WARREN COUNTIES... AT 1015 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS DEVELOPING ALONG A LINE EXTENDING FROM 20 MILES NORTHWEST OF TRENTON TO 14 MILES EAST OF READING...MOVING NORTH AT 10 TO 15 MPH. THE THUNDERSTORMS WILL BE NEAR LUMBERVILLE...RED HILL AROUND 1030 PM...BYRAM...STOCKTON AROUND 1045 PM...TINICUM...OTTSVILLE AROUND 1100 PM...ERWINNA...RICHLANDTOWN AROUND 1115 PM...FRENCHTOWN AND ZIONSVILLE AROUND 1130 PM. THESE STORMS IF THEY MAINTAIN THEMSELVES WOULD REACH THE POCONOS AND WARREN COUNTY ABOUT MIDNIGHT. VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. EXPECT SMALL HAIL AND FREQUENT...DANGEROUS CLOUD TO GROUND LIGHTNING FROM THESE STORMS. TFG
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1030 PM EDT WED JUL 1 2009 DEZ001>004-MDZ008-012-015-020-NJZ016>018-021>025-PAZ067-070-071- 020430- ATLANTIC NJ-ATLANTIC COASTAL CAPE MAY NJ-CAMDEN NJ-CAPE MAY NJ- CAROLINE MD-CECIL MD-CHESTER PA-COASTAL ATLANTIC NJ-CUMBERLAND NJ- DELAWARE PA-DELAWARE BEACHES DE-GLOUCESTER NJ-INLAND SUSSEX DE- KENT MD-KENT DE-NEW CASTLE DE-PHILADELPHIA PA-QUEEN ANNES MD- SALEM NJ- 1030 PM EDT WED JUL 1 2009 ...STRONG THUNDERSTORMS WILL AFFECT ATLANTIC...CAMDEN...CAPE MAY... CAROLINE...CECIL...CHESTER...CUMBERLAND...DELAWARE...GLOUCESTER... KENT...NEW CASTLE...PHILADELPHIA...QUEEN ANNES...SALEM AND SUSSEX COUNTIES... AT 1029 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN AREA OF SHOWERS AND SCATTERED STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 17 MILES SOUTHEAST OF LANCASTER TO 22 MILES WEST OF MIDDLETOWN TO 20 MILES NORTHEAST OF EASTON TO 23 MILES SOUTH OF SALISBURY...MOVING EAST AT 25 MPH. THE THUNDERSTORMS WILL BE NEAR ATGLEN...PARKESBURG AROUND 1045 PM...MODENA...SOUTH COATESVILLE AROUND 1100 PM...MARSHALLTON...DOWNINGTOWN AROUND 1115 PM...WEST CHESTER...WEST GOSHEN AROUND 1130 PM...NEWTOWN SQUARE AND DEVON-BERWYN AROUND 1145 PM. VERY HEAVY RAIN WILL FALL WITH THE STRONGEST STORMS...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. WIND GUSTS TO AROUND 35 MPH ARE POSSIBLE WITH THE STRONGEST STORMS IN THIS AREA. EXPECT SMALL HAIL AND DANGEROUS CLOUD TO GROUND LIGHTNING FROM THESE STORMS. TFG
The Dover AFB radar (KDOX), 93 km away, was scanning. The volume nearest the first event began at 04:06 UTC.
1 lightning. Local standard time, as filed.
A lightning strike caused a townhouse fire on Creekside Court in the Christine Hollow Development in Bear. The fire burned the roof of the townhouse and adjacent townhouses also suffered minor damage. The townhome residents were displaced. Damage was estimated at $125,000.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Delaware in 2009Every state in 2009This day in weather historyWarnings in Delaware, July 2009
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: 185866.