A lee side trough coupled with an upper air disturbance triggered and maintained a line of strong to locally severe thunderstorms across central and southern New Jersey during the morning of the 19th. Widely scattered thunderstorms also developed preceding an approaching cold front during the evening of the 19th.
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 lee side trough coupled with an upper air disturbance triggered and maintained a line of strong to locally severe thunderstorms across central and southern New Jersey during the morning of the 19th. Widely scattered thunderstorms also developed preceding an approaching cold front during the evening of the 19th.
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 19, 2:48 AM EST, 5 hours 32 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 348 AM EDT MON JUL 19 2010 .SYNOPSIS... A COLD FRONT WILL APPROACH THE AREA TODAY AND STALL OVER THE DELMARVA LATE TONIGHT OR TUESDAY. A BOUNDARY WILL LINGER OVER THE AREA THROUGH THE REST OF THE WORK WEEK, KEEPING OUR WEATHER UNSETTLED AT TIMES. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... THE LATEST COLD FRONT THAT WILL OFFER MINIMAL RELIEF FROM THE ONGOING HEAT WAS MOVING THROUGH THE GREAT LAKES REGION EARLY THIS MORNING. IT IS PROGGED TO ENTER NORTHWESTERN PENNSYLVANIA BY THE END OF THE PERIOD, AND IT WILL BE PRECEDED BY A PRE-FRONTAL TROUGH. THERE IS SOMETHING OF AN UPPER JET AND A MID LEVEL IMPULSE ROTATING AROUND THE EASTERN CANADIAN VORTEX THAT ACCOMPANY THE TROUGH. THERE IS FAIR SHEAR IN THE LOWEST 6 KM /FORECAST TO BE BETTER NORTHWEST THAN SOUTHEAST/, MODERATE INSTABILITY /FORECAST TO BE BETTER SOUTHEAST THAN NORTHWEST/, AND A RATHER MOIST ATMOSPHERE THAT SHOULD SUPPORT AT LEAST SOME STRONG, WET THUNDERSTORMS. THE STORM PREDICTION CENTER HAS ALL BUT THE SOUTHERN QUARTER OF THE FORECAST AREA UNDER A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY. WE HAVE ADDED SOME ENHANCED WORDING AND RAISED THE POPS INTO THE LIKELY TO HIGH CHANCE RANGE. WE ALSO CONTINUE TO HIGHLIGHT THIS IN THE HWO. WITH SOME MID AND A FAIR AMOUNT OF HIGH CLOUDINESS IN ADVANCE OF THE ACTIVITY AND WITH THE MOIST ATMOSPHERE, WE HAVE SIDED WITH THE MARGINALLY COOLER STAT GUIDANCE TODAY. THIS STILL HAS TEMPERATURES OVER MOST OF THE AREA REACHING 90 DEGREES, AND WITH THE HUMIDITY THE HEAT INDICES ARE EXPECTED TO CLIMB INTO THE MID 90S OVER THE LOWER DELAWARE VALLEY. IT WILL AGAIN BE UNCOMFORTABLE, BUT NOT SUFFICIENTLY SO TO ISSUE ANY HEAT ADVISORY. && .SHORT TERM /6 PM THIS EVENING THROUGH WEDNESDAY/... THE COLD FRONT MOVES THROUGH TONIGHT AND STALLS SOMEWHERE NEAR OUR FAR SOUTHERN ZONES. WITH THE ONGOING ZONAL MID LEVEL FLOW, WE EXPECT AT LEAST ONE OTHER WEAKENING FRONT TO MAKE A RUN AT US AND AT LEAST ONE OTHER IMPULSE TO MOVE ALONG THE GENERAL BAROCLINIC ZONE SET UP BETWEEN THE EXPANSIVE MID LEVEL RIDGE TO THE SOUTH AND THE CANADIAN VORTEX TO THE NORTH DURING THIS TIME FRAME. RIGHT NOW, WE ARE CENTERING THIS AROUND TUESDAY NIGHT. SO, AFTER SOME LINGERING EARLY POPS TONIGHT, WE DROP POPS LATE TONIGHT AND REINTRODUCE THEM BEGINNING TUESDAY AFTERNOON. WE CARRY FAIRLY HIGH CHANCE POPS TUESDAY NIGHT AND MAINTAIN THE SLIGHT CHANCE POPS ON WEDNESDAY. MAINLY, THIS MAINTAINS CONTINUITY. DAYTIME MAXES ON TUESDAY ON WEDNESDAY SHOW A MODEST OVERALL TREND DOWNWARD, AS DO DEW POINTS. WE HAVE LEANED TOWARD THE WARMER NIGHTTIME MINS IN THIS SOUPY REGIME. && .LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/... THE SUMMER PATTERN WITH HEAT AND HUMIDITY WILL CONTINUE INTO THE EXTENDED PERIOD. THE UPPER AIR PATTERN WILL FEATURE HIGH PRESSURE ACROSS THE SOUTHERN STATES WHICH WILL PERSIST INTO THE EARLY PART OF THE WEEKEND BEFORE WEAKENING. THE STORM TRACK WILL BE ACROSS THE NORTHERN PLAINS STATES EASTWARD INTO NEW ENGLAND. THIS WILL GUIDE WEAK SHORT WAVES ACROSS THE REGION DURING THE PERIOD. ONE STRONGER WAVE WILL DEVELOP DURING THE WEEKEND AND PASS ACROSS SRN CANADA. THESE FEATURES...COMBINED WITH THE HEAT AND HUMIDITY WILL PRODUCE PERIODS OF SHOWERS/TSTMS DURING THE LATE WEEK AND EARLY WEEKEND PERIOD. TEMPERATURES WILL REMAIN ABOVE NORMAL WITH HIGH TEMPERATURES IN THE UPPER 80 TO LOW 90S ACROSS MOST AREAS. FRIDAY MAY BE THE HOTTEST DAY DURING THE STRETCH WITH LOW 90S ACROSS THE NORTHERN AREAS AND MID 90S IN THE URBANIZED AREAS. OVERNIGHT LOWS WILL MAINLY BE IN THE 70S. THE UPPER PATTERN WILL CHANGE DURING THE WEEKEND WITH A TROUGH DEVELOPING ACROSS THE EAST...SO COOLER CONDITIONS WILL LIKELY ARRIVE BY EARLY NEXT WEEK. && .AVIATION /07Z MONDAY THROUGH FRIDAY/... A WEAK VORTICITY TROUGH MOVED THROUGH SOUTHERN PORTIONS OF OUR AREA EARLY IN THE OVERNIGHT PERIOD AND SOME DYING SHOWERS BRIEFLY THREATENED KILG AND KMIV BEFORE DISSIPATING. OTHERWISE SOME PATCHY HIGH CLOUDINESS WILL WORK THROUGH THE AREA EARLY THIS MORNING... ALONG WITH PATCHY FOG AND HAZE AT THE MORE RURAL TAF SITES...IN ANTICIPATION OF A COLD FRONT APPROACHING FROM THE WEST. THE AIR MASS WILL REMAIN QUITE UNSTABLE...SO AT LEAST SCATTERED THUNDERSTORMS WILL BE FORMING INTO WESTERN PORTIONS OF THE AREA BY MID TO LATE MORNING...WITH SCATTERED TO BROKEN ACTIVITY OVER THE TAF SITES THIS AFTERNOON. SOME WIND GUSTS COULD BE QUITE STRONG OR EVEN REACH SEVERE LEVELS...GIVEN THE DECENT CAPES AND HIGH INSTABILITY AS SHOWN BY LIFTED INDICES NEAR MINUS 6 ON THE NAM FOUS BY 00Z. SPC CONTINUES TO PAINT OUR TAF SITES IN AN AREA OF SLIGHT RISK FOR SEVERE THUNDERSTORMS FOR TODAY. LOCALIZED IFR CONDITIONS IN CONVECTION SHOULD BE EXPECTED FROM LATE MORNING OR MIDDAY BUT ESPECIALLY THIS AFTERNOON AND INTO THIS EVENING UNTIL THE FRONT AND MODEST UPPER TROUGH MOVE EAST OF THE AREA. DECREASING THUNDERSTORM COVERAGE AND IMPROVING CONDITIONS IN THE POST-FRONTAL ENVIRONMENT WILL OCCUR DURING THIS EVENING...BUT SOME VISIBILITIES MAY DROP TO MARGINAL VFR LEVELS OVERNIGHT IN FOG AND HAZE. OUTLOOK... VERY GOOD AFTERNOON AND EVENING INSTABILITY WILL BE IN PLACE MUCH OF THE REST OF THIS WEEK AS THE FRONT WILL REMAIN NEAR OUR AREA AND MAY PROVIDE SOME FORCING FOR MAINLY DIURNAL CONVECTION...UNTIL A FINAL LOW MOVES THROUGH SATURDAY INTO SATURDAY NIGHT. && .MARINE... AN APPROACHING COLD FRONT TODAY WILL CAUSE AN INCREASE IN THE SOUTHWEST SYNOPTIC FLOW OVER THE AREA WATERS. WAVEWATCH HAS BACKED OFF A BIT ON THE RESULTANT WAVES FOR TODAY HOWEVER...SO WE WILL CONTINUE TO FORECAST SUB-SMALL CRAFT ADVISORY CONDITIONS TODAY AND CONTINUE TO CAP SEAS AT 4 FEET. IF WAVES REACH 5 FEET FOR A TIME LATE TODAY OR THIS EVENING...THE DAY SHIFT MAY BE ABLE TO BETTER RESOLVE THIS ISSUE. THE APPROACHING FRONT IS EXPECTED TO SPARK SCATTERED TO BROKEN SHOWERS AND THUNDERSTORMS THIS AFTERNOON AND INTO TONIGHT. OTHERWISE THE COLD FRONT WILL STALL JUST TO OUR SOUTH BY TUESDAY AND THEN OSCILLATE OVER OR NEAR OUR MARINE AREA THIS WEEK. THIS FRONT WILL BE THE FOCUS FOR SHOWERS AND THUNDERSTORMS FROM TIME TO TIME... HOWEVER MOST OF THE TIME CONDITIONS WILL BE RAIN-FREE ON OUR WATERS. THE BEST CHANCE FOR SMALL CRAFT ADVISORY CONDITIONS WILL BE LATE IN THE WEEK AS A STRONGER FRONT APPROACHES...PERHAPS PASSING THROUGH LATE SATURDAY OR SATURDAY NIGHT. THE RISK OF RIP CURRENTS TODAY IS EXPECTED TO BE LOW. && .PHI WATCHES/WARNINGS/ADVISORIES... PA...NONE. NJ...NONE. DE...NONE. MD...NONE. MARINE...NONE. && SYNOPSIS...DELISI NEAR TERM...DELISI SHORT TERM...DELISI LONG TERM...O'HARA AVIATION... MARINE...
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 309 AM EDT MON JUL 19 2010 DEZ001-MDZ008-NJZ001-007>010-012>022-026-027-PAZ054-055-060>062- 067>071-200900- NEW CASTLE-CECIL-SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX- WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER-SALEM-GLOUCESTER-CAMDEN- NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC-COASTAL OCEAN- SOUTHEASTERN BURLINGTON-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- 309 AM EDT MON JUL 19 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN 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...TODAY AND TONIGHT. THE STORM PREDICTION CENTER HAS PLACED THE AREA UNDER A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR TODAY. THE MAIN THREAT IS DAMAGING WINDS. LOCALLY HEAVY DOWNPOURS AND DANGEROUS CLOUD TO GROUND LIGHTNING ALSO ARE LIKELY. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED. DEZ002>004-MDZ012-015-019-020-NJZ023>025-200900- KENT-INLAND SUSSEX-DELAWARE BEACHES-KENT MD-QUEEN ANNES-TALBOT- CAROLINE-CAPE MAY-ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC- 309 AM EDT MON JUL 19 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL DELAWARE...SOUTHERN DELAWARE...NORTHEAST MARYLAND AND SOUTHERN NEW JERSEY. .DAY ONE...TODAY AND TONIGHT. THUNDERSTORMS TODAY MAY GENERATE GUSTY WINDS, LOCALLY HEAVY DOWNPOURS AND DANGEROUS CLOUD TO GROUND LIGHTNING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED. ANZ450-451-200900- 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- 309 AM EDT MON JUL 19 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT. THE STORM PREDICTION CENTER HAS PLACED THE AREA UNDER A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR TODAY. THE MAIN THREAT IS DAMAGING WINDS. LOCALLY HEAVY DOWNPOURS AND DANGEROUS CLOUD TO SURFACE LIGHTNING ALSO ARE LIKELY. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. ANZ430-431-452>455-200900- 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 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- 309 AM EDT MON JUL 19 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS AND DELAWARE BAY WATERS. .DAY ONE...TODAY AND TONIGHT. THUNDERSTORMS TODAY MAY GENERATE GUSTY WINDS, LOCALLY HEAVY DOWNPOURS AND DANGEROUS CLOUD TO SURFACE LIGHTNING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
658 AM EDT MON JUL 19 2010
NJZ001-007>010-PAZ054-055-060>062-069-191200-
BERKS PA-BUCKS PA-CARBON PA-HUNTERDON NJ-LEHIGH PA-MONROE PA-
MORRIS NJ-NORTHAMPTON PA-SOMERSET NJ-SUSSEX NJ-WARREN NJ-
658 AM EDT MON JUL 19 2010
...A CLUSTER OF THUNDERSTORMS WILL AFFECT BERKS...BUCKS...CARBON...
HUNTERDON...LEHIGH...MONROE...MORRIS...NORTHAMPTON...SOMERSET...
SUSSEX AND WARREN COUNTIES...
AT 655 AM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED AN AREA OF
SHOWERS AND SOME STRONG THUNDERSTORMS...WITH THE STRONGEST
THUNDERSTORM 8 MILES NORTH OF EASTON...MOVING NORTHEAST AT 35 MPH.
THUNDERSTORMS WILL BE NEAR BELVIDERE...BRASS CASTLE...PLEASANT
VALLEY...STROUDSBURG AROUND 705 AM...COLUMBIA...PORTLAND...
OXFORD...DELAWARE WATER GAP AROUND 710 AM...CALIFON AND MOUNTAINHOME
AROUND 715 AM.
VERY HEAVY RAIN WILL FALL FROM THEES STORMS...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS.
WIND GUSTS TO 35 MPH ARE POSSIBLE WITH THESE STORMS.
EXPECT OCCASIONAL TO FREQUENT LIGHTNING FROM SOME OF THESE STORMS.
DO NOT SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE
INDOORS WHEN A THUNDERSTORM APPROACHES.
LAT...LON 4104 7449 4105 7447 4090 7432 4086 7431
4075 7437 4052 7534 4037 7572 4042 7594
4060 7603 4064 7601 4074 7578 4084 7593
4125 7527 4126 7514 4116 7516 4115 7509
4109 7501 4115 7491 4127 7484 4134 7474SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
720 AM EDT MON JUL 19 2010
NJZ007>010-191215-
HUNTERDON NJ-MORRIS NJ-SOMERSET NJ-WARREN NJ-
720 AM EDT MON JUL 19 2010
...A STRONG THUNDERSTORM WILL AFFECT HUNTERDON...MORRIS...SOMERSET
AND WARREN COUNTIES...
AT 716 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 16 MILES EAST OF EASTON...MOVING NORTHEAST AT 35
MPH. THE THUNDERSTORM WILL BE NEAR CALIFON...CHESTER AROUND 730 AM...
MORRIS PLAINS...MENDHAM AROUND 745 AM...PARSIPPANY...HANOVER TOWNSHIP
AROUND 800 AM AND RIVERDALE AROUND 815 AM.
VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS.
WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THIS STORM.
LAT...LON 4089 7433 4087 7433 4086 7431 4081 7433
4079 7436 4074 7436 4058 7492 4074 7502
4101 7434 4100 7430 4097 7427 4092 7428
4089 7427
HAYESSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
746 AM EDT MON JUL 19 2010
DEZ001-MDZ008-NJZ015>018-PAZ067>071-191245-
BUCKS PA-CAMDEN NJ-CECIL MD-CHESTER PA-DELAWARE PA-GLOUCESTER NJ-
MERCER NJ-MONTGOMERY PA-NEW CASTLE DE-PHILADELPHIA PA-SALEM NJ-
746 AM EDT MON JUL 19 2010
...STRONG THUNDERSTORMS WILL AFFECT BUCKS...CAMDEN...CECIL...
CHESTER...DELAWARE...GLOUCESTER...MERCER...MONTGOMERY...NEW CASTLE...
PHILADELPHIA AND SALEM COUNTIES...
AT 743 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 18 MILES EAST OF
READING TO 26 MILES SOUTH OF LANCASTER...MOVING EAST AT 35 MPH. THE
THUNDERSTORMS WILL BE NEAR THORNDALE AROUND 745 AM...SPRING MOUNT
HARLEYSVILLE AROUND 800 AM...HATFIELD...CHALFONT AROUND 815
AM...DOYLESTOWN...NEW HOPE AROUND 830 AM...NORTHEAST PHILADELPHIA
AND PENNS GROVE 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 50 MPH ARE POSSIBLE WITH THESE STORMS.
LAT...LON 3978 7607 4035 7561 4033 7535 4043 7549
4061 7522 4053 7507 4042 7506 4040 7497
4031 7491 4029 7470 4020 7477 4014 7473
3999 7507 3991 7499 3962 7549 3962 7557
3969 7552 3962 7560 3961 7615 3969 7623
HAYESSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 819 AM EDT MON JUL 19 2010 NJZ015-019-PAZ067>069-071-191315- BUCKS PA-CHESTER PA-MERCER NJ-MONTGOMERY PA- NORTHWESTERN BURLINGTON NJ-PHILADELPHIA PA- 819 AM EDT MON JUL 19 2010 ...A STRONG THUNDERSTORM WILL AFFECT BUCKS...BURLINGTON...CHESTER... MERCER...MONTGOMERY AND PHILADELPHIA COUNTIES... AT 817 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 17 MILES NORTHWEST OF PHILADELPHIA...MOVING EAST AT 25 MPH. THE THUNDERSTORM WILL BE NEAR EAST NORRITON...BLUE BELL AROUND 830 AM...MAPLE GLEN...HORSHAM AROUND 845 AM...HATBORO... WARMINSTER HEIGHTS AROUND 900 AM...LANGHORNE AND LANGHORN AROUND 915 AM. VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM. LAT...LON 4033 7474 4006 7472 4007 7549 4024 7551 HAYES
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 847 AM EDT MON JUL 19 2010 DEZ001-NJZ016>019-027-PAZ067-070-071-191345- CAMDEN NJ-CHESTER PA-DELAWARE PA-GLOUCESTER NJ-NEW CASTLE DE- NORTHWESTERN BURLINGTON NJ-PHILADELPHIA PA-SALEM NJ- SOUTHEASTERN BURLINGTON NJ- 847 AM EDT MON JUL 19 2010 ...A STRONG THUNDERSTORM WILL AFFECT BURLINGTON...CAMDEN...CHESTER... DELAWARE...GLOUCESTER...NEW CASTLE...PHILADELPHIA AND SALEM COUNTIES... AT 843 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 9 MILES NORTH OF WILMINGTON...MOVING EAST AT 30 MPH. THE THUNDERSTORM WILL BE NEAR VILLAGE GREEN-GREEN RIDGE... LINWOOD AROUND 845 AM...PARKSIDE...BROOKHAVEN AROUND 900 AM... PHILADELPHIA INTERNATIONAL AIRPORT...NATIONAL PARK AROUND 915 AM... MARLTON...AUDUBON AROUND 930 AM...MEDFORD AND MEDFORD LAKES AROUND 945 AM. AS MUCH AS THREE-QUARTERS OF AN INCH OF RAIN MAY FALL WITH THIS STORM. THIS MUCH RAIN COULD CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. WIND GUSTS TO 40 MPH ARE ALSO POSSIBLE WITH THIS STORM. LAT...LON 4005 7474 3978 7470 3976 7558 3994 7561 HAYES
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 914 AM EDT MON JUL 19 2010 DEZ001-MDZ008-NJZ016-017-191415- CECIL MD-GLOUCESTER NJ-NEW CASTLE DE-SALEM NJ- 914 AM EDT MON JUL 19 2010 ...A STRONG THUNDERSTORM WILL AFFECT CECIL...GLOUCESTER...NEW CASTLE AND SALEM COUNTIES... AT 910 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 2 MILES NORTHEAST OF ELKTON...MOVING EAST AT 25 MPH. THE THUNDERSTORM WILL BE NEAR BEAR...STANTON AROUND 930 AM...NEW CASTLE...WILMINGTON MANOR AROUND 945 AM...CARNEYS POINT...PENNS GROVE AROUND 1000 AM AND SWEDESBORO AROUND 1015 AM. AS MUCH AS THREE-QUARTERS OF AN INCH OF RAIN MAY FALL WITH THIS STORM. THIS MUCH RAIN COULD CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. WIND GUSTS TO 40 MPH ARE ALSO POSSIBLE WITH THIS STORM. LAT...LON 3969 7592 3981 7532 3965 7526 3952 7584 HAYES
The Philadelphia radar (KDIX), 55 km away, was scanning. The volume nearest the first event began at 13:18 UTC.
2 thunderstorm wind, 2 lightning. Local standard time, as filed.
A severe thunderstorm tore down large tree limbs and wires along New Jersey State Route 70 near Cuthbert Boulevard in Cherry Hill.
A severe thunderstorm tore down trees and wires in West Long Branch.
A lightning strike set the attic of a house on fire on Monmouth Parkway in Middletown Township. It took firefighters about twenty minutes to get the fire under control. One firefighter was injured battling the blaze.
A 49-year-old man was struck and killed by lightning on Linden Avenue in Middletown while in contact with a tree and observing a house fire that was started by a previous lightning strike. A 54-year-old man and a police officer were also injured by the same lightning strike.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Lightning, Monmouth | 2010-07-19 | 49 | Male | Under Tree | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New Jersey in 2010Every state in 2010This day in weather historyWarnings in New Jersey, July 2010
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: 248944, 248946, 248977, 248978.