An approaching lee side trof helped trigger some strong to locally severe thunderstorms in northern Delaware during the evening of the 31st.
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.
An approaching lee side trof helped trigger some strong to locally severe thunderstorms in northern Delaware during the evening of the 31st.
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 Aug 31, 3:10 PM EST, 3 hours 8 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 410 PM EDT SUN AUG 31 2014 .SYNOPSIS... HIGH PRESSURE WELL OFF THE EAST COAST WILL MAINTAIN A SOUTHWESTERLY FLOW OVER THE AREA THROUGH THE FIRST PART OF THE WEEK. A WEAK COLD FRONT IS THEN EXPECTED TO MOVE ACROSS OUR AREA LATE TUESDAY. HIGH PRESSURE WILL BUILD IN BEHIND THIS FRONT FOR THE SECOND HALF OF THE WEEK BEFORE ANOTHER COLD FRONT ARRIVES IN THE REGION THIS WEEKEND. && .NEAR TERM /UNTIL 6 AM MONDAY MORNING/... TWO DISTINCT AREAS OF MID-LEVEL ENERGY TO THE WEST OF THE REGION THIS AFTERNOON. THE FIRST, STRONGER PIECE, IS LOCATED ACROSS THE NORTHERN GREAT LAKES, TIED TO THE SURFACE LOW PRESSURE, WHILE THE SECOND, WEAKER, WAVE IS ACROSS SOUTHWEST PENNSYLVANIA. THE WAVE INTERACTIONS HAVE PRODUCED NUMEROUS SHOWERS AND THUNDERSTORMS ACROSS CENTRAL AND SOUTHEAST PENNSYLVANIA THIS AFTERNOON. VERY MOIST AND WARM AIRMASS WILL ALLOW FOR AMPLE INSTABILITY TO CONTINUE THE THREAT OF THESE STORMS AS THEY PUSH EAST-NORTHEAST. BUOYANCY IS NOT AN ISSUE, EVEN WITH WEAK MID-LEVEL LAPSE RATES, GIVEN THE AMOUNT OF BULK SHEAR THAT EXISTS WITHIN THE NORTHERN 2/3RDS OF OUR CWA...LESS ACROSS SOUTHERN DELMARVA. IN TERMS OF SEVERE CONVECTION EXPECTED, WE CONTINUE TO EXPECT A FEW ISOLATED STORMS BRINGING DOWN THE STRONG WINDS ALOFT AS PRECIPITATION LOADED CORES DROP. THE MAIN ACTIVITY THROUGH THE EVENING HOURS SHOULD REMAIN TO THE NORTH OF DOVER AS ONE OF THE MID-LEVEL TROUGHS SLIDE THROUGH. LATER THIS EVENING INTO THE OVERNIGHT HOURS, ANOTHER WEAK MID-LEVEL TROUGH WILL SLIDE THROUGH PRODUCING MORE WIDESPREAD SHOWERS WITH EMBEDDED CONVECTION. WE MOVE THE LIKELY POPS TOWARDS THE EAST TO FOLLOW THE PATH OF THIS FEATURE. WITH THE PWATS BEING WELL ABOVE NORMAL ANY OF THE SHOWERS WILL BE WATER LADEN AND PRODUCE VERY HEAVY DOWNPOURS. THESE DOWNPOURS COULD PRODUCE LOCALIZED SMALL STREAM AND POOR DRAINAGE FLOODING...GOOD THING THE STORM MOTION IS RELATIVELY QUICK. && .SHORT TERM /6 AM MONDAY MORNING THROUGH 6 PM MONDAY/... SOUPY AIRMASS REMAINS IN PLACE WITH WEAK MID-LEVEL SHORTWAVE MOVING THROUGH. THE WAVE ALOFT LOOKS TO GET SHEARED OUT AS IT MOVES IN ALOFT SO IT DOES NOT APPEAR TO BE A GREAT TRIGGER FOR CONTINUED CONVECTIVE ACTIVITY. THAT BEING SAID, ANY DIFFERENTIAL HEATING THAT OCCURS COMBINED WITH WEAK SURFACE CONVERGENCE CAN BE THE SPARK NEEDED TO GET CONVECTION GOING. WE CONTINUE TO HAVE AT LEAST 40-50 PERCENT POPS FOR A MAJORITY OF THE REGION. TEMPERATURES TOMORROW WILL BE SEVERAL DEGREES ABOVE NORMAL. UPTICKED THE MAX TEMPERATURES A DEGREE ACROSS THE I-95 CORRIDOR AS ANY BREAKS IN THE CLOUDS WILL BE ENOUGH FOR SUBSTANTIAL HEATING. && .LONG TERM /MONDAY NIGHT THROUGH SUNDAY/... AT THE BEGINNING OF THIS PERIOD, WE SEE A TRANSITION TO MOSTLY ZONAL FLOW FROM THE LOWER THROUGH UPPER LEVELS. TUESDAY...BEFORE MUCH DRY AIR ADVECTION WITH THE ZONAL FLOW CAN KICK IN THOUGH, WE WILL SEE A RATHER UNCOMFORTABLE DAY WITH HIGHS IN THE 80S AND 90S, WHILE HEAT INDEX VALUES COULD APPROACH THE MID AND UPPER 90S IN DELMARVA AND THE I95 CORRIDOR. TUESDAY NIGHT...MODELS STILL SHOWING THE FRONT ARRIVING DURING THIS PERIOD, BRINGING SOMEWHAT COOLER, BUT MOSTLY DRIER AIR. STILL SOME CHANCE FOR SHOWERS AND STORMS AHEAD OF AND WITH THE FRONT, HOWEVER WITH THE ZONAL FLOW IN PLACE, AND MODEST DRY AIR ADVECTION OCCURRING AHEAD OF THE FRONT, MOISTURE AVAILABILITY WILL BE SOMEWHAT QUESTIONABLE. WEDNESDAY THROUGH FRIDAY...A HIGH BUILDS OVER THE REGION IN THE WAKE OF THE COLD FRONT. AS A RESULT EXPECT A FEW, NICE, SUMMER LIKE DAYS WITH HIGHS IN THE 80S. SATURDAY THROUGH SUNDAY...THE NEXT COLD FRONT IS SET TO ARRIVE OVER THE WEEKEND. THOUGH THERE IS SOME QUESTION WITH THE CONTINUED ZONAL FLOW HOW FAR SOUTH THE FRONT WILL DIG, BOTH THE GFS AND ECMWF HAVE BEEN CONSISTENT IN SHOWING THE FRONT MOVING SOUTH OF OUR REGION THROUGH THIS PERIOD. && .AVIATION /19Z SUNDAY THROUGH FRIDAY/... THE FOLLOWING DISCUSSION IS FOR KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY AND SURROUNDING AREAS. THROUGH LATE EVENING...VFR. AREAS OF SHOWERS AND THUNDERSTORMS ACROSS SOUTHEAST PENNSYLVANIA WILL GENERALLY MOVE TOWARDS THE EAST-NORTHEAST THIS EVENING. STORMS ARE CAPABLE OF LOCAL IFR CONDITIONS AND GUSTY WINDS. TEMPO GROUPS FOR MAIN THUNDERSTORM ACTIVITY IN THE TAFS. TONIGHT...VFR TO MVFR. WINDS LIGHTEN UP BUT REMAIN MOSTLY SOUTHERLY. COULD BE A WASH-RINSE-REPEAT EVENT TONIGHT WITH WARM MOIST AIR STILL IN PLACE. NOT ENTIRELY SURE WE WILL SEE WIDESPREAD MVFR CIGS SO THIS IS A LOWER CONFIDENCE FORECAST. MORE SCATTERED SHOWERS ARE POSSIBLE. TOMORROW...VFR. ANY STRATUS MIXES OUT BY LATE MORNING. ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS ARE POSSIBLE BUT AT THIS TIME LOCATION IS A BIG QUESTION. OUTLOOK... MONDAY NIGHT...COVERAGE OF STORMS DECREASES THROUGH THE EVENING HOURS. HOWEVER, WITH LOW LEVEL MOISTURE IN PLACE, IFR VISIBILITIES DUE TO BR COULD LINGER FOR MUCH OF THE NIGHT. TUESDAY AND TUESDAY NIGHT...CONDITIONS IMPROVING TO VFR EARLY IN THE DAY. SOME SHOWERS AND THUNDERSTORMS POSSIBLE LATE TUESDAY AFTERNOON AND TUESDAY EVENING, ALONG WITH AN ABRUPT WIND SHIFT AS A COLD FRONT MOVES THROUGH THE REGION. WEDNESDAY THROUGH FRIDAY...GENERALLY VFR CONDITIONS EXPECTED. && .MARINE... SUB-SCA CONDITIONS EXPECTED TONIGHT AND TOMORROW. SEAS WILL CONTINUE TO BUILD THROUGH TOMORROW...AROUND 4 FEET. WINDS SHOULD BE LIGHTER TOMORROW THAN TODAY. OUTLOOK... MONDAY NIGHT THROUGH FRIDAY...SEAS AND WINDS ARE EXPECTED TO REMAIN BELOW SMALL CRAFT ADVISORY CRITERIA. SOME GUSTY WINDS WILL BE POSSIBLE IN THE VICINITY OF THUNDERSTORMS MONDAY EVENING AND AGAIN TUESDAY NIGHT. && .HYDROLOGY... VERY HIGH PWAT AIRMASS IN PLACE TODAY AND TONIGHT. NUMEROUS MID-LEVEL WAVES/TROUGHS MOVE THROUGH THE REGION TAPPING INTO THE MOISTURE ALLOWING FOR VERY HEAVY DOWNPOURS, ESPECIALLY IN CONVECTION. STORM MOTIONS SHOULD BE QUICK ENOUGH FOR MOSTLY POOR DRAINAGE AND SOME SMALL STREAM FLOODING. THROUGH TOMORROW AFTERNOON, WHEN MORE SHOWERS AND THUNDERSTORMS ARE POSSIBLE, QPF ACCUMULATIONS OF AROUND AN INCH ARE POSSIBLE...HIGHER WITHIN SOME STORMS. CURRENT CONDITIONS ACROSS THE REGION HAVE BEEN DRY SO NOT EXPECTING MUCH IN THE WAY OF FLASH FLOODING CONCERNS. && .PHI WATCHES/WARNINGS/ADVISORIES... PA...NONE. NJ...NONE. DE...NONE. MD...NONE. MARINE...NONE. && SYNOPSIS...JOHNSON NEAR TERM...HEAVENER SHORT TERM...HEAVENER LONG TERM...JOHNSON AVIATION...HEAVENER/JOHNSON MARINE...HEAVENER/JOHNSON HYDROLOGY...HEAVENER
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 351 PM EDT SUN AUG 31 2014 DEZ001-MDZ008-012-NJZ001-007>010-012-015>019-PAZ054-055-060>062-070- 071-101>106-012000- NEW CASTLE-CECIL-KENT MD-SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET- MIDDLESEX-MERCER-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-DELAWARE-PHILADELPHIA- WESTERN CHESTER-EASTERN CHESTER-WESTERN MONTGOMERY- EASTERN MONTGOMERY-UPPER BUCKS-LOWER BUCKS- 351 PM EDT SUN AUG 31 2014 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...THIS AFTERNOON AND TONIGHT. SHOWERS AND THUNDERSTORMS THIS AFTERNOON AND TONIGHT COULD PRODUCE LOCALLY HEAVY RAIN, POTENTIALLY LEADING TO FLOODING IN POOR DRAINAGE AREAS. A FEW THUNDERSTORMS COULD BE STRONG WITH GUSTY WINDS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED. DEZ002>004-MDZ015-019-020-NJZ013-014-020>027-012000- KENT-INLAND SUSSEX-DELAWARE BEACHES-QUEEN ANNES-TALBOT-CAROLINE- WESTERN MONMOUTH-EASTERN MONMOUTH-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY- ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN- SOUTHEASTERN BURLINGTON- 351 PM EDT SUN AUG 31 2014 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. SOME SHOWERS AND THUNDERSTORMS LATE THIS AFTERNOON AND TONIGHT COULD PRODUCE LOCALLY HEAVY RAIN, POTENTIALLY LEADING TO FLOODING IN POOR DRAINAGE AREAS. SOME THUNDERSTORMS COULD BE STRONG WITH GUSTY WINDS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. ANZ430-431-450>455-012000- 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- 351 PM EDT SUN AUG 31 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS AND DELAWARE BAY WATERS. .DAY ONE...THIS AFTERNOON AND TONIGHT. GUSTY WINDS ARE POSSIBLE IN THE VICINITY OF THUNDERSTORMS LATE THIS AFTERNOON AND TONIGHT. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. GUSTY WINDS ARE POSSIBLE IN THE VICINITY OF THUNDERSTORMS TOMORROW MORNING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
557 PM EDT SUN AUG 31 2014
DEZ001-NJZ016>018-PAZ070-071-312230-
CAMDEN NJ-DELAWARE PA-GLOUCESTER NJ-NEW CASTLE DE-PHILADELPHIA PA-
SALEM NJ-
557 PM EDT SUN AUG 31 2014
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT DELAWARE...NORTH
CENTRAL SALEM...NORTHERN NEW CASTLE...NORTHWESTERN CAMDEN...
NORTHWESTERN GLOUCESTER AND SOUTHWESTERN PHILADELPHIA COUNTIES...
AT 553 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM
CHESTER HEIGHTS TO BROOKSIDE...MOVING EAST AT 35 TO 40 MPH.
WIND GUSTS TO 40 OR 45 MPH ARE POSSIBLE WITH THESE STORMS.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. DO
NOT STAY IN THE OPEN NOR SEEK SHELTER UNDER TREES WHEN LIGHTNING
THREATENS...MOVE INDOORS WHEN A THUNDERSTORM APPROACHES.
VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO
POND ON ROADS AND FILL POOR DRAINAGE AREAS. THE RAIN CAN CAUSE RAPID
RISES ON SMALL STREAMS AND CREEKS.
THESE STORMS WILL BE NEAR SWARTHMORE AROUND 605 PM...SHARON HILL
AROUND 610 PM...SOUTH PHILADELPHIA AROUND 615 PM...BEN FRANKLIN
BRIDGE AROUND 620 PM AND WOODLYNNE AROUND 625 PM.
THIS STATEMENT UPDATES THE SPECIAL WEATHER STATEMENT ISSUED AT 537
PM.
LAT...LON 3983 7565 3984 7560 3987 7560 3996 7550
3996 7502 3995 7502 3968 7530 3968 7551
3969 7553 3968 7554 3967 7579 3971 7579
FORECASTER: DRAGSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
619 PM EDT SUN AUG 31 2014
DEZ001-NJZ016>018-PAZ070-071-312245-
CAMDEN NJ-DELAWARE PA-GLOUCESTER NJ-NEW CASTLE DE-PHILADELPHIA PA-
SALEM NJ-
619 PM EDT SUN AUG 31 2014
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTH CENTRAL SALEM...
NORTHEASTERN NEW CASTLE...NORTHWESTERN CAMDEN...NORTHWESTERN
GLOUCESTER...SOUTHEASTERN DELAWARE AND SOUTHWESTERN PHILADELPHIA
COUNTIES...
AT 617 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM
COLLINGDALE TO LINWOOD TO CARNEYS POINT...MOVING EAST AT 30 MPH.
WIND GUSTS OF 40 TO 50 MPH ARE LIKELY WITH A COUPLE OF THESE STORMS.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. DO
NOT STAY IN THE OPEN NOR SEEK SHELTER UNDER TREES WHEN LIGHTNING
THREATENS...MOVE INDOORS WHEN A THUNDERSTORM APPROACHES.
VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO
POND ON ROADS AND FILL POOR DRAINAGE AREAS. THE RAIN CAN CAUSE RAPID
RISES ON SMALL STREAMS AND CREEKS.
THESE STORMS WILL BE NEAR FOLCROFT AROUND 625 PM...SOUTH PHILADELPHIA
AROUND 630 PM...CAMDEN AROUND 635 PM...PENNSAUKEN AROUND 640 PM AND
OAKLYN AROUND 645 PM.
THIS UPDATES THE 557 PM SPECIAL WEATHER STATEMENT.
LAT...LON 3980 7554 3995 7530 3999 7502 3998 7501
3997 7502 3995 7502 3994 7499 3987 7508
3970 7517 3969 7555
FORECASTER: DRAGSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
626 PM EDT SUN AUG 31 2014
DEZ001-MDZ008-012-312315-
CECIL MD-KENT MD-NEW CASTLE DE-
626 PM EDT SUN AUG 31 2014
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL NEW CASTLE...
NORTH CENTRAL KENT AND SOUTHEASTERN CECIL COUNTIES...
AT 623 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM HAVRE
DE GRACE TO BOWLEYS QUARTERS...MOVING EAST AT 35 MPH.
WIND GUSTS TO 30 MPH ARE POSSIBLE WITH THESE STORMS.
VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO
POND ON ROADS AND FILL POOR DRAINAGE AREAS.
THESE STORMS WILL BE NEAR HOLLYWOOD BEACH...AND HOLLYWOOD BEACH
AROUND 635 PM...CHESAPEAKE CITY...NEWTOWN...NEWTOWN...AND CAYOTS
AROUND 645 PM...BETTERTON AROUND 650 PM...SAINT GEORGES...SAINT
GEORGES AND KENNEDYVILLE AROUND 700 PM.
LAT...LON 3938 7611 3938 7606 3944 7600 3946 7602
3947 7600 3953 7600 3956 7556 3954 7556
3931 7596 3928 7619 3932 7619
ROBERTSONSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
649 PM EDT SUN AUG 31 2014
NJZ014-312315-
EASTERN MONMOUTH NJ-
649 PM EDT SUN AUG 31 2014
...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN MONMOUTH COUNTY...
AT 649 PM EDT...A STRONG THUNDERSTORM WAS NEAR BRADLEY BEACH...MOVING
NORTHEAST AT 30 MPH.
WIND GUSTS TO 30 MPH ARE POSSIBLE WITH THIS STORM.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM...AND
THE STORM WILL AFFECT THE BEACHES. FOR YOUR SAFETY...IMMEDIATELY MOVE
OFF THE BEACH AND SEEK SHELTER INDOORS.
THIS STORM WILL BE NEAR DEAL AROUND 655 PM AND LONG BRANCH AROUND 700
PM.
LAT...LON 4020 7400 4017 7399 4017 7401 4013 7402
4013 7406 4016 7409 4026 7406 4031 7397
4028 7397
ROBERTSONSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
653 PM EDT SUN AUG 31 2014
NJZ017>019-027-312345-
CAMDEN NJ-GLOUCESTER NJ-NORTHWESTERN BURLINGTON NJ-
SOUTHEASTERN BURLINGTON NJ-
653 PM EDT SUN AUG 31 2014
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CAMDEN...CENTRAL
BURLINGTON AND NORTHEASTERN GLOUCESTER COUNTIES...
AT 651 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM
MOORESTOWN-LENOLA TO HADDONFIELD TO BLACKWOOD TO GLASSBORO...MOVING
EAST AT 30 MPH.
WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THESE STORMS.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. DO
NOT STAY IN THE OPEN NOR SEEK SHELTER UNDER TREES WHEN LIGHTNING
THREATENS...MOVE INDOORS WHEN A THUNDERSTORM APPROACHES.
VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO
POND ON ROADS AND FILL POOR DRAINAGE AREAS. THE RAIN CAN CAUSE RAPID
RISES ON SMALL STREAMS AND CREEKS.
THESE STORMS WILL BE NEAR PINE HILL...PINE VALLEY...MARLTON...AND
LINDENWOLD AROUND 700 PM...BERLIN...LUMBERTON...LUMBERTON...AND
EVESHAM AROUND 705 PM...CHESILHURST AND MARLTON LAKES AROUND 710 PM.
THESE STORMS ARE PART OF THE LINE THAT WAS STRONGER IN THE
SWEDESBORO AREA AROUND 630 PM.
LAT...LON 3981 7460 3968 7456 3968 7467 3973 7473
3968 7479 3969 7511 3980 7520 3989 7516
3989 7514 3991 7513 3999 7502 3998 7450
FORECASTER: DRAGSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
702 PM EDT SUN AUG 31 2014
NJZ016-017-312330-
GLOUCESTER NJ-SALEM NJ-
702 PM EDT SUN AUG 31 2014
...A NEW LINE OF SCATTERED STRONG THUNDERSTORMS WILL AFFECT CENTRAL
GLOUCESTER AND CENTRAL SALEM COUNTIES...
AT 700 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM
WOODSTOWN TO PENNSVILLE TO SALEM...MOVING EAST AT 20 MPH.
WIND GUSTS TO 30 MPH ARE POSSIBLE WITH THESE STORMS.
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. DO
NOT STAY IN THE OPEN NOR SEEK SHELTER UNDER TREES WHEN LIGHTNING
THREATENS...MOVE INDOORS WHEN A THUNDERSTORM APPROACHES.
BRIEF BUT VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL
CAUSE WATER TO POND ON ROADS AND FILL POOR DRAINAGE AREAS. THE RAIN
CAN CAUSE RAPID RISES ON SMALL STREAMS AND CREEKS.
THESE STORMS WILL BE NEAR ALLOWAY AROUND 715 PM...WOODSTOWN AROUND
720 PM AND ELMER AROUND 730 PM.
LAT...LON 3969 7547 3973 7534 3972 7512 3963 7517
3951 7515 3952 7519 3956 7524 3951 7529
3954 7551
FORECASTER: DRAGThe Dover AFB radar (KDOX), 71 km away, was scanning. The volume nearest the first event began at 23:15 UTC.
2 thunderstorm wind. Local standard time, as filed.
A mesonet site measured a wind gust of 61 mph during a severe thunderstorm in Saint Georges Hundred near the Appoquinimink River. Another wind gust of 53 mph was measured in Odessa.
A severe thunderstorm knocked down a few trees onto power lines in Middletown.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Delaware in 2014Every state in 2014This day in weather historyWarnings in Delaware, August 2014
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: 540305, 540304.