A strong cold front helped develop a squall line of strong to severe thunderstorms that moved through Delaware during the afternoon of the 9th.
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 PHI wrote it up.
A strong cold front helped develop a squall line of strong to severe thunderstorms that moved through Delaware during the afternoon of the 9th.
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 Sep 9, 11:29 AM EST, 3 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1229 PM EDT TUE SEP 9 2008
.SYNOPSIS...
A COLD FRONT WILL MOVE SOUTHEAST FROM THE GREAT LAKES REGION AND
CROSS THE REGION LATE THIS AFTERNOON AND EARLY TONIGHT. COOL HIGH
PRESSURE WILL THEN DOMINATE THE WEATHER WEDNESDAY AND THURSDAY
THURSDAY BEFORE SLIDING OFF TO THE EAST ON FRIDAY. A COUPLE OF
FRONTAL SYSTEMS WILL THEN CROSS THE REGION THROUGH NEXT WEEKEND
AND EARLY NEXT WEEK.
&&
.NEAR TERM /THROUGH TONIGHT/...
THE MAIN LINE OF THUNDERSTORMS HAS MOVED OUT OF PA AND WESTERN NEW
JERSEY AND IS NOW HEADING TOWARD THE COAST. WHILE SHOWERS AND
THUNDERSTORMS ARE STILL EXPECTED THIS AFTERNOON AND EVENING
THROUGHOUT THE CWA...THE THREAT OF SEVERE WEATHER HAS SHIFTED
TOWARD THE COAST. THEREFORE THE SEVERE THUNDERSTORM WATCH HAS BEEN
CANCELLED IN THE WESTERN PORTIONS OF THE CWA...BUT REMAINS IN
EFFECT UNTIL 4 PM ELSWHERE. FLASH FLOODING REMAINS A THREAT AS
WELL GIVEN THE HEAVY RAIN ASSOCIATED WITH SOME THUNDERSTORMS.
&&
.SHORT TERM /WEDNESDAY THROUGH WEDNESDAY NIGHT/...
I EXPECT THE FRONT TO MOVE OFF THE COAST BY MIDNIGHT WITH TSTM
ACTIVITY MOVING EAST WITH THE FRONT. COOL HIGH PRESSURE THEN
BRINGS COOLER AND DRIER AIR TO THE REGION LATE TONIGHT. HOWEVER,
THE FLOW BECOMES NE OVER THE FAR SOUTHERN ZONES AND THE DRY AIR
COULD TEMPORARILY BE DLAD THERE AND SHOWERS MIGHT LINGER INTO WED
MORNING. ONCE THE DRY AIR ARRIVES, SKIES WILL CLEAR AND REMAIN
MOSTLY CLEAR THROUGH THURSDAY. THIS AIRMASS IS VERY COOL AS
IDENTIFIED BY THE 1000-850 THICKNESSES OF 1340 NORTH TO 1375 SOUTH
WED AM. THE MAV MINS LOOK OK OR SLIGHTLY HIGH CONSIDERING THE CAA
LATE TONIGHT. FOR WEDNESDAY, IT WILL FEEL SOMEWHAT LIKE AUTUMN AND
TEMPERATURES SHOULD ONLY REACH THE LOW 70S WHILE REMAINING THE MID
TO UPPER 60S IN THE POCONOS. THE LOWS WED NIGHT WILL BE MOSTLY IN
THE 40S, EXCEPT FOR SOME LOWER AND MIDDLE 50S EXTREME SOUTH AND
ALONG THE COAST. THURSDAY SHOULD SEE TEMPS COOL ONCE AGAIN WITH
READINGS SIMILAR OR SLIGHT ABOVE WED.
&&
.LONG TERM /THURSDAY THROUGH MONDAY/...
THE HIGH THAT WILL HAVE BROUGHT THE COOL DRY WEATHER TO THE AREA
FOR WED AND THURSDAY WILL MOVE OFFSHORE FRIDAY. THIS WILL ALLOW
MOISTURE TO RETURN TO THE REGION DURING FRIDAY. THEN A SERIES OF
FRONTAL SYSTEMS WILL MOVE OVER THE REGION AND STALL THROUGH
MONDAY, MEANING POSSIBLE SHOWERS EACH DAY. THUNDERSTORMS WERE
INCLUDED ONLY FOR SUNDAY AS THAT IS THE TIMEFRAME WHEN THE AIRMASS
LOOKS WARMEST AND MOST UNSTABLE. OTHERWISE, THE HPC FCST HAS BEEN
ACCEPTED.
&&
.AVIATION /18Z TUESDAY THROUGH SUNDAY/...
A LINE OF SHOWERS AND THUNDERSTORMS HAS ALREADY MOVED THROUGH KRDG
AND KABE AND IS KNOCKING ON THE DOOR AT KTTN, KPNE, KPHL, KILG.
EXPECT THOSE AIRPORTS TO SEE THUNDER, REDUCED VSBYS AND CIGS AND
WIND GUSTS TO ABOUT 35KT AS THE LINE MOVES THROUGH. THEN THERE
WILL LIKELY BE A BREAK IN THE ACTION, WITH GENERALLY VFR/MVFR
CONDITIONS UNTIL POSSIBLY A SECOND ROUND OF STORMS WITH THE FRONT
LATER TODAY. IT REMAINS TO BE SEEN WHETHER THE CURRENT CONVECTIVE
ACTIVITY WILL STABILIZE THINGS AND LESSEN THE CHANCES FOR LATER
CONVECTION. VFR CONDITIONS SHOULD RETURN FOR THE ENTIRE REGION
AFTER FROPA AND CONTINUE INTO WEDNESDAY.
FOR THE OUTLOOK BEYOND 12Z WEDNESDAY, BUILDING HIGH PRESSURE WILL LEAD
TO VFR FLYING WEATHER WEDNESDAY THROUGH FRIDAY. ANOTHER FRONT IS
SHOWN BY THE MODELS TO APPROACH FRIDAY, WITH LOWER CONDITIONS AT
TIMES POSSIBLE AS EARLY AS FRIDAY NIGHT, PERHAPS PERSISTING
SATURDAY AND MAYBE EVEN INTO SUNDAY. TROPICAL WEATHER MAY INVADE
THE AREA WITH THE REMNANTS OF IKE EARLY NEXT WEEK, IF THE 00Z GFS
CAN BE BELIEVED THIS FAR OUT.
&&
.MARINE...
A SHARP LATE SUMMER (OR EARLY AUTUMN, IF YOU PREFER) COLD FRONT WILL
APPROACH THE COAST FROM THE NORTHWEST TODAY AND PASS OFF THE COAST
LATE TODAY AND THIS EVENING. CONDITIONS MAY APPROACH SMALL CRAFT
ADVISORY CRITERIA TODAY. THE NAM 925 WINDS ARE A TOUCH STRONGER THAN
THE GFS. WELL SIDE WITH THE GFS, BUT EVEN SO, WELL MENTION A FEW
GUSTS TO 25 KT ON THE OCEAN TODAY.
WITH A NORTH TO NORTHEAST FLOW WEDNESDAY, WAVEWATCH HAS BUILT SEAS
TO 5 FEET. ITS TRUE THAT THE GRADIENT SEEMS TO RELAX IN THE
AFTERNOON A BIT, BUT WITH A NORTH TO NORTHEAST FLOW OF 15 TO 20
KNOTS, WITH GUSTS UP TO 25 KNOTS, WAVES MAY MAKE IT TO 5 FEET.
BEYOND WEDNESDAY, HIGH PRESSURE SHOULD SUPPORT MARINE ACTIVITIES
WEDNESDAY AND THURSDAY, AND PROBABLY INTO FRIDAY AS WELL.
&&
.PHI WATCHES/WARNINGS/ADVISORIES...
PA...NONE.
NJ...NONE.
DE...NONE.
MD...NONE.
MARINE...SMALL CRAFT ADVISORY FROM 6 AM TO 6 PM EDT WEDNESDAY FOR
ANZ431-450>455.
&&
SYNOPSIS...STAUBER
NEAR TERM...NIERENBERG/STAUBER/JJM
SHORT TERM...STAUBER
LONG TERM...STAUBER
AVIATION...NIERENBERG
MARINE...NIERENBERGHAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1227 PM EDT TUE SEP 9 2008 DEZ001-MDZ008-012-NJZ001-007>010-012-015-PAZ054-055-060>062-067>071- 101630- NEW CASTLE-CECIL-KENT MD-SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET- MIDDLESEX-MERCER-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-CHESTER- MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- 1227 PM EDT TUE SEP 9 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN DELAWARE...NORTHEAST MARYLAND...CENTRAL NEW JERSEY...NORTHERN NEW JERSEY...NORTHWEST NEW JERSEY...EAST CENTRAL PENNSYLVANIA...NORTHEAST PENNSYLVANIA AND SOUTHEAST PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EVENING. SOME OF THE THUNDERSTORMS COULD CONTAIN STRONG WINDS AND HAIL AS WELL AS DANGEROUS LIGHTNING. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THROUGH THE EVENING. DEZ002-003-MDZ015-019-020-NJZ013-016>023-027-101630- KENT-INLAND SUSSEX-QUEEN ANNES-TALBOT-CAROLINE-WESTERN MONMOUTH- SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND- ATLANTIC-CAPE MAY-SOUTHEASTERN BURLINGTON- 1227 PM EDT TUE SEP 9 2008 ...SEVERE THUNDERSTORM WATCH 893 IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL DELAWARE...SOUTHERN DELAWARE...NORTHEAST MARYLAND...CENTRAL NEW JERSEY AND SOUTHERN NEW JERSEY. .DAY ONE...THIS AFTERNOON AND 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. THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EVENING. SOME OF THE THUNDERSTORMS COULD BECOME SEVERE AND CONTAIN DAMAGING WINDS AND HAIL AS WELL AS DANGEROUS LIGHTNING. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED. DEZ004-NJZ014-024>026-101630- DELAWARE BEACHES-EASTERN MONMOUTH-ATLANTIC COASTAL CAPE MAY- COASTAL ATLANTIC-COASTAL OCEAN- 1227 PM EDT TUE SEP 9 2008 ...SEVERE THUNDERSTORM WATCH 893 IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHERN DELAWARE...CENTRAL NEW JERSEY AND SOUTHERN NEW JERSEY. .DAY ONE...THIS AFTERNOON AND 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. THIS IS A MODERATE RISK OF RIP CURRENTS TODAY. THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EVENING. SOME OF THE THUNDERSTORMS COULD BECOME SEVERE AND CONTAIN DAMAGING WINDS AND HAIL AS WELL AS DANGEROUS LIGHTNING. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED. ANZ431-450>455-101630- 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- 1227 PM EDT TUE SEP 9 2008 ...SEVERE THUNDERSTORM WATCH 893 IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON... ...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM TO 6 PM EDT WEDNESDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS AND DELAWARE BAY WATERS. .DAY ONE...THIS AFTERNOON AND 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. THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EVENING. SOME OF THE THUNDERSTORMS COULD BECOME SEVERE AND CONTAIN DAMAGING WINDS AND HAIL AS WELL AS DANGEROUS LIGHTNING. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SMALL CRAFT ADVISORY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED. ANZ430-101630- DELAWARE BAY WATERS NORTH OF EAST POINT NJ TO SLAUGHTER BEACH DE- 1227 PM EDT TUE SEP 9 2008 ...SEVERE THUNDERSTORM WATCH 893 IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON... THIS HAZARDOUS WEATHER OUTLOOK IS FOR DELAWARE BAY WATERS. .DAY ONE...THIS AFTERNOON AND 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. THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EVENING. SOME OF THE THUNDERSTORMS COULD BECOME SEVERE AND CONTAIN DAMAGING WINDS AND HAIL AS WELL AS DANGEROUS LIGHTNING. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 815 AM EDT TUE SEP 9 2008 NJZ001-091315- SUSSEX NJ- 815 AM EDT TUE SEP 9 2008 ...STRONG THUNDERSTORMS WILL AFFECT SUSSEX COUNTY... AT 812 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES NORTHEAST OF MONTAGUE TO 8 MILES WEST OF NEWTON...MOVING EAST AT ABOUT 30 MPH. THE THUNDERSTORMS WILL BE NEAR BRANCHVILLE AROUND 825 AM...SUSSEX AROUND 835 AM...VERNON VALLEY...HAMBURG AROUND 845 AM AND HIGHLAND LAKE AROUND 855 AM. 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 TO 40 MPH ARE POSSIBLE WITH THESE STORMS. EXPECT SMALL HAIL AND FREQUENT...DANGEROUS CLOUD TO GROUND LIGHTNING FROM THESE STORMS. PLEASE MOVE INDOORS IF POSSIBLE. IF YOU ARE DRIVING AND ENCOUNTER ROADWAY FLOODING...PLEASE DO NOT TRY TO DRIVE ACROSS IT. FIND AN ALTERNATE ROUTE. MPD
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 826 AM EDT TUE SEP 9 2008 PAZ054-055-060>062-091330- BERKS PA-CARBON PA-LEHIGH PA-MONROE PA-NORTHAMPTON PA- 826 AM EDT TUE SEP 9 2008 ...STRONG THUNDERSTORMS WILL AFFECT BERKS...CARBON...LEHIGH...MONROE AND NORTHAMPTON COUNTIES... AT 821 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 17 MILES NORTHWEST OF MONTAGUE TO 22 MILES NORTHWEST OF LANCASTER...MOVING EAST AT ABOUT 30 MPH. THE THUNDERSTORMS WILL BE NEAR CANADENSIS...WEISSPORT EAST...STRAUSSTOWN...MOUNTAINHOME AROUND 835 AM...PENN FOREST RESERVOIR...PARADISE VALLEY...JONAS...BELTZVILLE STATE PARK AROUND 840 AM...WANAMAKERS AND SCOTRUN AROUND 845 AM. 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 TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS. EXPECT INTENSE LIGHTNING FROM THESE STORMS. DO NOT SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN A THUNDERSTORM APPROACHES. IF YOU ARE DRIVING AND ENCOUNTER A FLOODED ROADWAY...PLEASE DO NOT TRY TO DRIVE ACROSS IT. FIND AN ALTERNATE ROUTE. MPD
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1003 AM EDT TUE SEP 9 2008 DEZ001-MDZ008-NJZ001-008>010-012-015>019-PAZ067>071-091500- BUCKS PA-CAMDEN NJ-CECIL MD-CHESTER PA-DELAWARE PA-GLOUCESTER NJ- HUNTERDON NJ-MERCER NJ-MIDDLESEX NJ-MONTGOMERY PA-MORRIS NJ- NEW CASTLE DE-NORTHWESTERN BURLINGTON NJ-PHILADELPHIA PA-SALEM NJ- SOMERSET NJ-SUSSEX NJ- 1003 AM EDT TUE SEP 9 2008 ...STRONG THUNDERSTORMS WILL AFFECT BUCKS...BURLINGTON...CAMDEN... CECIL...CHESTER...DELAWARE...GLOUCESTER...HUNTERDON...MERCER... MIDDLESEX...MONTGOMERY...MORRIS...NEW CASTLE...PHILADELPHIA... SALEM...SOMERSET AND SUSSEX COUNTIES... AT 959 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 20 MILES NORTHWEST OF PATERSON TO 20 MILES SOUTHWEST OF ELKTON...MOVING EAST AT ABOUT 30 MPH. THE THUNDERSTORMS WILL BE NEAR TROUT LAKE...NEWTOWN SQUARE AROUND 1015 AM...WASHINGTON CROSSING...TEMPLE UNIVERSITY AROUND 1030 AM...WISSINOMING...TACONY AROUND 1045 AM...EDINBURG AND WILLINGBORO AROUND 1100 AM. WIND GUSTS TO 50 MPH AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS. EXPECT INTENSE LIGHTNING FROM THESE STORMS. DO NOT SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN A THUNDERSTORM APPROACHES. MPD
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1052 AM EDT TUE SEP 9 2008 DEZ001-002-MDZ008-012-NJZ010-012>022-025>027-PAZ069>071-091645- ATLANTIC NJ-BUCKS PA-CAMDEN NJ-CECIL MD-COASTAL ATLANTIC NJ- COASTAL OCEAN NJ-CUMBERLAND NJ-DELAWARE PA-EASTERN MONMOUTH NJ- GLOUCESTER NJ-KENT MD-KENT DE-MERCER NJ-MIDDLESEX NJ-NEW CASTLE DE- NORTHWESTERN BURLINGTON NJ-OCEAN NJ-PHILADELPHIA PA-SALEM NJ- SOMERSET NJ-SOUTHEASTERN BURLINGTON NJ-WESTERN MONMOUTH NJ- 1052 AM EDT TUE SEP 9 2008 ...STRONG THUNDERSTORMS WILL AFFECT ATLANTIC...BUCKS...BURLINGTON... CAMDEN...CECIL...CUMBERLAND...DELAWARE...GLOUCESTER...KENT... MERCER...MIDDLESEX...MONMOUTH...NEW CASTLE...OCEAN...PHILADELPHIA... SALEM AND SOMERSET COUNTIES... AT 1050 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 2 MILES NORTHEAST OF MANHATTEN TO 16 MILES SOUTHWEST OF MIDDLETOWN...MOVING EAST AT 40 MPH. THE THUNDERSTORMS WILL BE NEAR WINDSOR...MOUNT LAUREL... JACKSONVILLE...CROSSWICKS AROUND 1100 AM...SPRINGDALE... MORGANVILLE...LUMBERTON...GREENTREE AROUND 1105 AM...MARLBORO AND MANALAPAN AROUND 1110 AM. VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. IF YOU ARE DRIVING AND ENCOUNTER A FLOODED ROADWAY...PLEASE DO NOT TRY TO CROSS IT. FIND ANOTHER ROUTE. WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS. THERE ARE AREAS OF INTENSE LIGHTNING FROM SOME OF THESE STORMS. DO NOT SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN A THUNDERSTORM APPROACHES. MPD
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1125 AM EDT TUE SEP 09 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0850 AM TSTM WND DMG PARADISE VALLEY 41.12N 75.28W
09/09/2008 MONROE PA EMERGENCY MNGR
TREES DOWN AT THE CORNER OF KOERNERS ROAD AND RT. 390
0900 AM TSTM WND DMG READING 40.34N 75.93W
09/09/2008 BERKS PA EMERGENCY MNGR
MULTIPLE TREES DOWN IN BERKS COUNTY
0948 AM TSTM WND DMG HIGH BRIDGE 40.67N 74.90W
09/09/2008 HUNTERDON NJ EMERGENCY MNGR
TREES DOWN ON CHARLESTON ROAD IN BETHLEHEM TOWNSHIP
1106 AM FLASH FLOOD 5 E SOUTH PLAINFIELD 40.58N 74.32W
09/09/2008 MIDDLESEX NJ TRAINED SPOTTER
GARDEN STATE PARKWAY INUNDATED WITH WATER.
&&
JJMPRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1148 AM EDT TUE SEP 09 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0850 AM TSTM WND DMG PARADISE VALLEY 41.12N 75.28W
09/09/2008 MONROE PA EMERGENCY MNGR
TREES DOWN AT THE CORNER OF KOERNERS ROAD AND RT. 390
0900 AM TSTM WND DMG READING 40.34N 75.93W
09/09/2008 BERKS PA EMERGENCY MNGR
MULTIPLE TREES DOWN IN BERKS COUNTY
0948 AM TSTM WND DMG HIGH BRIDGE 40.67N 74.90W
09/09/2008 HUNTERDON NJ EMERGENCY MNGR
TREES DOWN ON CHARLESTON ROAD IN BETHLEHEM TOWNSHIP
1106 AM FLASH FLOOD 5 E SOUTH PLAINFIELD 40.58N 74.32W
09/09/2008 MIDDLESEX NJ TRAINED SPOTTER
GARDEN STATE PARKWAY INUNDATED WITH WATER.
1130 AM FLASH FLOOD SOMERDALE 39.85N 75.02W
09/09/2008 CAMDEN NJ EMERGENCY MNGR
ROAD CLOSED AT SOMERDALE ROAD AND WHITE HORSE PIKE
&&
JJMThe Dover AFB radar (KDOX), 39 km away, was scanning. The volume nearest the first event began at 16:33 UTC.
1 lightning, 1 thunderstorm wind. Local standard time, as filed.
A lightning strike caused two-thirds of Dover to lose power for about 90 minutes during the afternoon of the 9th.
Trees and wires were knocked down on the south side of Georgetown.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Delaware in 2008Every state in 2008This day in weather historyWarnings in Delaware, September 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: 135870, 134378.