Isolated strong thunderstorms moved across northern New Jersey during the early morning on the 9th. A more organized squall line of strong to severe thunderstorms moved through southern New Jersey later that morning.
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.
Isolated strong thunderstorms moved across northern New Jersey during the early morning on the 9th. A more organized squall line of strong to severe thunderstorms moved through southern New Jersey later that morning. The squall line formed near a warm frontal boundary. In addition to the winds, the thunderstorms were prolific lightning producers.
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 8, 5:23 PM EST, 7 hours 7 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 623 PM EDT MON JUN 8 2009 .SYNOPSIS... LOW PRESSURE MOVING THROUGH THE EASTERN GREAT LAKES AND THROUGH THE SAINT LAWRENCE VALLEY WILL BRING A WARM FRONT THROUGH OUR AREA OVERNIGHT. THE COMPANION COLD FRONT WILL MOVE EAST-SOUTHEASTWARD THROUGH OUR AREA LATE TUESDAY AND TUESDAY NIGHT. THIS FRONT WILL LIFT BACK NORTH AS A WARM FRONT THURSDAY, WITH ANOTHER LOW PRESSURE SYSTEM SLOWLY MOVING THROUGH THE REGION THURSDAY AND THURSDAY NIGHT. THIS LOW AND ASSOCIATED COLD FRONT WILL MOVE OFF THE COAST FRIDAY. HIGH PRESSURE WILL BUILD TOWARD OUR AREA FROM THE WEST LATE FRIDAY AND BE OVER THE REGION SATURDAY. && .NEAR TERM /UNTIL 6 AM TUESDAY MORNING/... HAVE MADE SOME ADJUSTMENTS TO THE NEAR TERM PERIOD BASED ON CURRENT AND EXPECTED RADAR AND SATELLITE TRENDS. THERE ARE A FEW SHOWERS/TSTMS MAINLY ACRS SRN NJ AND DE, OTHERWISE THERE IS NOT MUCH TO SPEAK OF ON RADAR. WITH LOSS OF DAYTIME HEATING, EXPECT STABILIZATION TO OCCUR. CAN NOT RULE OUT AN ADDITIONAL SHOWER OR TSTM THROUGH THE EVENING, BUT WILL CUT POPS BACK TO SLIGHT CHC THROUGH 00Z. AFTER THAT, WILL INCREASE POPS TO CHC ACRS NWRN AREAS AND KEEP SCHC POPS ELSEWHERE. AFTER 04Z, WILL KEEP PREV FCST UNCHANGED WITH LIKELIES IN THE N AND CHC POPS ELSEWHERE. OTHERWISE, HAVE MADE SOME DOWNWARD ADJUSTMENTS TO SKY COVER. MOST PLACES ACRS THE DELMARVA HAVE GONE CLEAR OR MOSTLY CLEAR AND HAVE REDUCED CLDS ELSEWHERE AS WELL. AN AREA OF RAIN IS MOVING THROUGH THE OHIO RIVER VALLEY ASSOCIATED WITH A SHORT WAVE THAT MAY MAKE ITS WAY INTO OUR AREA OVERNIGHT. FOR THIS REASON, WE HAVE KEPT THE MENTION OF SHOWERS AND THUNDERSTORMS IN DURING THE OVERNIGHT HOURS. && .SHORT TERM /6 AM TUESDAY MORNING THROUGH WEDNESDAY NIGHT/... THE STALLED BOUNDARY ACROSS THE AREA TONIGHT WILL BEGIN LIFTING NORTH AS A WARM FRONT ON TUESDAY. THIS WILL ALLOW FOR WARM MOIST AIR TO FILTER IN ACROSS OUR ENTIRE FORECAST AREA. THIS WILL HELP LEAD TO MODERATE INSTABILITY ACROSS THE AREA DURING THE AFTERNOON HOURS WITH CAPES ABOVE 2000 J/KG ACROSS MUCH OF THE AREA, AND LIS BELOW -5 C AS WELL. WITH THE POSSIBILITY OF A PRE-FRONTAL TROUGH DEVELOPING, THIS COULD GIVE THE LIFT THE ATMOSPHERE NEEDS TO HELP CREATE THUNDERSTORMS. SHEAR IS NOT OVERLY IMPRESSIVE, 20-30 KTS DEPENDING ON THE MODEL, BUT WITH THE AMOUNT OF INSTABILITY AND WITH LOW WET-BULB TEMPERATURES, LARGE HAIL WILL LIKELY BE THE MAIN THREAT, BUT DAMAGING WINDS ARE ALSO POSSIBLE. WITH PW VALUES FORECAST OVER 1.5 INCHES, HEAVY RAINS WILL ALSO OCCUR WITH ANY THUNDERSTORMS, WHICH COULD LEAD TO PONDING ON ROADWAYS AND SHARP RISES ON SMALL CREEKS AND STREAMS. SHOWERS AND THUNDERSTORMS WILL LIKELY LAST INTO THE EVENING HOURS ON TUESDAY UNTIL THE COLD FRONT MOVES THROUGH OVERNIGHT. SEVERE WEATHER WILL LIKELY DIMINISH AFTER SUNDOWN AS INSTABILITY WANES AND STORMS MOVE INTO A COOLER, MORE STABLE MARINE AIRMASS. BEHIND THE FRONT, SHOWERS ARE NOT EXPECTED TO BE WIDESPREAD, BUT WE KEPT A SLIGHT CHANCE DUE TO THE PROXIMITY OF THE FRONTAL BOUNDARY THAT WILL LIKELY STALL TO OUR SOUTH. THERE COULD BE SOME OVER-RUNNING PRECIPITATION WEDNESDAY NIGHT AHEAD OF THE WARM FRONT THAT IS EXPECTED TO BE SOUTH OF THE AREA. && .LONG TERM /THURSDAY THROUGH MONDAY/... BY THURSDAY, THE WARM FRONT WILL BEGIN LIFTING BACK NORTHWARD, WITH AN AREA OF LOW PRESSURE LIFTING TOWARD THE AREA OVERNIGHT THURSDAY INTO FRIDAY. FINALLY THE COLD FRONT WILL MOVE THROUGH THE AREA OVERNIGHT THURSDAY INTO FRIDAY. THIS WILL HELP TO KEEP A CHANCE OF SHOWERS AND THUNDERSTORMS ACROSS THE AREA FROM THURSDAY INTO FRIDAY. WE COULD SEE SOME STRONG STORMS DEPENDING OF THE TRACK OF THE WARM FRONT AND LOW PRESSURE SYSTEM AND IF WE REMAIN IN THE WARM SECTOR LONG ENOUGH. EITHER WAY, WE WILL LIKELY SEE SOME HEAVY RAIN WITH SOME SHOWERS/THUNDERSTORMS. BY LATE FRIDAY AND INTO THE WEEKEND, AFTER THE COLD FRONT MOVES THROUGH, HIGH PRESSURE WILL BUILD IN. THIS WILL PROVIDE FOR A NICE WEEKEND. WITHOUT ANY STRONG WARM OR COLD AIR ADVECTION, TEMPERATURES SHOULD REMAIN COMFORTABLE. IN FACT, TEMPERATURES THROUGHOUT THE EXTENDED ARE EXPECTED TO BE CLOSE TO AVERAGE FOR THIS TIME OF YEAR. && .AVIATION /22Z MONDAY THROUGH SATURDAY/... THE FOLLOWING DISCUSSION IS FOR KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY AND SURROUNDING AREAS. THE FORECAST HAS BEEN IMPROVED FROM THE PREVIOUSLY ONE ISSUED. SOME ISOLATED CONVECTION IS EXPECTED TO CONTINUE TO DEVELOP THROUGH MIDNIGHT IN RESPONSE TO A FRONTAL SYSTEM THAT DROPPED DOWN FROM THE N AND HAD MOVED THROUGH PHL. ALSO, A SHORT WAVE ALOFT WILL BE MOVING EAST FROM WESTERN PA TONIGHT, THIS SHOULD ALLOW SOME SHOWERS AND TSTMS TO GENERATE AGAIN AFTER MIDNIGHT. PREVIOUSLY THERE WAS A FOG BANK TO THE EAST OF NE NJ THAT WAS HEADED ONSHORE. THIS FOG BANK AND AREA OF LOWER CLOUDS HAS DISSIPATED ON SATL DUE TO SOME DRIER AIR ENTRAINING INTO THE AREA FROM THE NE. DUE TO THIS, THE MENTION OF STRATUS IN THE TAFS FOR TONIGHT HAS BEEN DROPPED. HOWEVER, WHENEVER SHOWERS OR TSTMS DEVELOP, THERE IS THE POSSIBILITY OF IFR CONDITIONS WITH THESE. ON TUESDAY, THE AIRMASS OVER THE REGION WILL BECOME MORE UNSTABLE AND DURING THE MORNING INTO THE MIDDLE OF THE DAY, SOME SUNSHINE WILL PROBABLY DEVELOP ALLOWING TEMPERATURES TO WARM. DEWPOINTS WILL ALSO INCREASE TO THE UPPER 60S OR 70 ALSO ADDING TO THE INSTABILITY. THEREFORE TSTMS ARE ANTICIPATED TUESDAY AFTN AND SOME OF THE TSTMS HAVE THE POSSIBILITY OF BECOME SVR THROUGH TUE EVENING. OUTLOOK... THE COLD FRONT LOOKS TO BECOME STATIONARY ACROSS OUR AREA TUESDAY NIGHT, PERHAPS OVER SOUTHERN PORTIONS, WITH SOME LINGERING SHOWERS OR THUNDERSTORMS ESPECIALLY IN THE EVENING. MORE MARGINAL TO PATCHY IFR CONDITIONS ARE POSSIBLE TUESDAY NIGHT. WE EXPECT SOMEWHAT OF A BREAK ON WEDNESDAY AS OUR AREA IS BETWEEN WEATHER SYSTEMS. THE NEXT LOW PRESSURE AREA IS FORECAST TO HEAD IN FOR THURSDAY, WITH ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS. THE ASSOCIATED FRONT LOOKS TO CLEAR OUR AREA BY FRIDAY AS HIGH PRESSURE BUILDS TOWARD OUR REGION FROM THE WEST. && .MARINE... CONDITIONS ARE STILL FORECAST TO REMAIN BELOW SMALL CRAFT ADVISORY CRITERIA TONIGHT THROUGH WEDNESDAY, DESPITE THE APPROACH AND PASSAGE OF A WARM FRONT / COLD FRONT COUPLET TUESDAY. ISOLATED TO PERHAPS SCATTERED CONVECTION TONIGHT WILL BE BUILDING TO MORE NUMEROUS AREAS OF SHOWERS AND THUNDERSTORMS TUESDAY, WHEN THE AIRMASS WILL BE AT ITS MOISTEST AND MOST UNSTABLE. OBVIOUSLY, WINDS AND WAVES MAY BE MUCH HIGHER IN ANY CONVECTION THROUGH TUESDAY NIGHT. OUR AREA MAY BE IN A LITTLE BETTER GRADIENT, AND THUS A HIGHER WIND FIELD, FOR THURSDAY AS LOW PRESSURE APPROACHES FROM THE WEST. WAVEWATCH STILL TRIES TO BUILD SEAS TO 5 FEET AT TIMES THURSDAY AFTERNOON AND INTO THE EVENING. THIS MAY BE OVERDONE AS WAVEWATCH OFTEN EXAGGERATES AT LONGER TIME FRAMES. FOR NOW, WE CONTINUED WITH THE IDEA OF CAPPING THE SEAS AT 4 FEET GIVEN THE UNCERTAINTY WITH THE DETAILS AND THE LACK OF A STRONG GRADIENT. && .PHI WATCHES/WARNINGS/ADVISORIES... PA...NONE. NJ...NONE. DE...NONE. MD...NONE. MARINE...NONE. && SYNOPSIS...ROBERTSON NEAR TERM...NIERENBERG/ROBERTSON SHORT TERM...ROBERTSON LONG TERM...ROBERTSON AVIATION...STAUBER/ MARINE.../
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 411 PM EDT MON JUN 8 2009 DEZ001>004-MDZ008-012-015-019-020-NJZ001-007>010-012>027-PAZ054-055- 060>062-067>071-092015- NEW CASTLE-KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD- QUEEN ANNES-TALBOT-CAROLINE-SUSSEX-WARREN-MORRIS-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- 411 PM EDT MON JUN 8 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...THIS AFTERNOON AND TONIGHT. THERE IS A CHANCE OF SCATTERED SHOWERS AND THUNDERSTORMS TONIGHT ACROSS THE AREA. THESE STORMS ARE NOT EXPECTED TO BE SEVERE BUT MAY CONTAIN GUSTY WINDS AND HEAVY RAIN, MAYBE EVEN VERY SMALL HAIL. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. THE STORM PREDICTION CENTER HAS INCLUDED OUR AREA IN A SLIGHT RISK FOR SEVERE STORMS ON TUESDAY. SEVERE WEATHER POSSIBILITES INCLUDE HAIL AND DAMAGING WINDS. HEAVY RAIN AND FREQUENT LIGHTNING WILL ALSO ACCOMPANY ANY THUNDERSTORMS AS WELL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED. ANZ430-431-450>455-092015- 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- 411 PM EDT MON JUN 8 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS AND DELAWARE BAY WATERS. .DAY ONE...THIS AFTERNOON AND TONIGHT. THERE IS A CHANCE OF SCATTERED SHOWERS AND THUNDERSTORMS TONIGHT ACROSS THE AREA. THESE STORMS ARE NOT EXPECTED TO BE SEVERE BUT MAY CONTAIN GUSTY WINDS AND HEAVY RAIN, MAYBE EVEN VERY SMALL HAIL. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. THE STORM PREDICTION CENTER HAS INCLUDED OUR AREA IN A SLIGHT RISK FOR SEVERE STORMS ON TUESDAY. SEVERE WEATHER POSSIBILITES INCLUDE HAIL AND DAMAGING WINDS. HEAVY RAIN AND FREQUENT LIGHTNING WILL ALSO ACCOMPANY ANY THUNDERSTORMS AS WELL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED.
The Philadelphia radar (KDIX), 97 km away, was scanning. The volume nearest the first event began at 05:29 UTC.
4 lightning, 2 thunderstorm wind, 1 heavy rain, 1 hail. Local standard time, as filed.
Thunderstorms with heavy rain caused poor drainage in eastern Morris County. Roadway flooding was reported on New Jersey State Route 10 in Hanover Township. A storm total from Hanover Township was 2.90 inches.
Lightning struck a home on Pleasant Avenue in Hanover Township. The ensuing fire was contained to the attic, but both the first and second floors of the home sustained smoke and water damage. The fire made the home uninhabitable. No injuries were reported.
A house in Princeton was struck by lightning and damaged by the ensuing fire. No injuries were reported.
A building in Carteret was struck by lightning. The lightning strike left a small hole in the roof, but no fire developed.
A severe thunderstorm dropped dime to nickel size hail in West Collingswood Borough. Pea size hail fell in nearby Mount Ephraim Borough.
A severe thunderstorm pulled down large tree limbs and wires in Evesham Township.
A severe thunderstorm knocked over large tree limbs, wires and eight poles in Fortescue (Downe Township). A wind gust to 51 mph was measured within Fortescue.
A lightning strike and ensuing fire damaged an Ocean Acres home in Stafford Township. No injuries were reported.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New Jersey in 2009Every state in 2009This day in weather historyWarnings in New Jersey, June 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: 177774, 177767, 178074, 178075, 178072, 178073, 178077, 178076.