A series of slow moving thunderstorms associated with a nearly stationary low pressure system in Eastern Virginia caused flash flooding in Sussex County that started overnight on the 25th and lasted into the 26th. 5 inches.
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 series of slow moving thunderstorms associated with a nearly stationary low pressure system in Eastern Virginia caused flash flooding in Sussex County that started overnight on the 25th and lasted into the 26th. Doppler Radar storm total estimates reached around 8.5 inches.
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 25, 2:49 PM EST, 3 hours 41 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 349 PM EDT SAT AUG 25 2012 .SYNOPSIS... A HIGH PRESSURE SYSTEM OVER THE CANADIAN MARITIMES WILL SLOWLY SAG SOUTH SUNDAY AND MONDAY. A LOW PRESSURE SYSTEM NEAR NORFOLK WILL DRIFT SLOWLY NORTHWEST AND DISSIPATE BY SUNDAY. A COLD FRONT IS EXPECTED TO CROSS THE REGION LATE MONDAY AND TUESDAY, FOLLOWED BY ANOTHER AREA OF HIGH PRESSURE THROUGH THE END OF THE WORK WEEK. ANOTHER COLD FRONT IS FORECAST TO APPROACH THE REGION ON SATURDAY. THE REMNANTS OF ISAAC SHOULD INTERACT WITH THIS BOUNDARY. && .NEAR TERM /UNTIL 6 AM SUNDAY MORNING/... LOW PRESSURE CONTINUES TO PUSH NORTHWARD FROM THE CAROLINAS INTO SOUTHERN VIRGINIA. AHEAD OF THIS SYSTEM IS AN AREA OF PRECIPITATION THAT HAS BEEN MAINLY STAYING ACROSS SOUTHERN DELAWARE, MARYLAND AND VIRGINIA. AS THE SHOWERS PUSH NORTH, THEY ARE ENCOUNTERING MORE STABLE AND SLIGHTLY DRIER AIR. ONLY SOME LIGHT SHOWERS OR SPRINKLES HAVE BEEN MAKING THEIR WAY NORTH THROUGH NEW JERSEY AND INTO PENNSYLVANIA. THE SHOWERS WILL CONTINUE TO MOVE NORTH AS THE LOW MOVES NORTH BUT COVERAGE LOOKS TO BE MORE SPOTTY AND THE AREAS MORE LIKELY TO SEE MEASURABLE PRECIPITATION ARE ACROSS DELAWARE, SOUTHERN NEW JERSEY AND INTO SOUTHEASTERN MARYLAND. MINIMUM TEMPERATURES TONIGHT WILL SLIGHTLY WARMER THAN LAST NIGHT AS PLENTY OF CLOUDS WILL REMAIN ACROSS THE REGION. LOWS WILL FALL INTO THE MID TO UPPER 60S, COOLER ACROSS THE HIGHER TERRAIN. && .SHORT TERM /6 AM SUNDAY MORNING THROUGH 6 PM SUNDAY/... THE SURFACE LOW STARTS TO DISSIPATE AS THE STRONGER HIGH TO OUR NORTHEAST PUSHES ACROSS THE MIDDLE ATLANTIC. MEANWHILE, THE MID LEVEL CLOSED LOW OPENS UP AND MOVES INTO THE AREA AS A TROUGH. THIS MID LEVEL FEATURE ALONG WITH THE CONTINUED EASTERLY FLOW WILL HELP TO KEEP US FAIRLY CLOUDY THROUGH SUNDAY. WITH A DECENT AMOUNT OF CLOUD COVER, TEMPERATURES WILL ONCE AGAIN BE ON THE MILD SIDE. HIGH TEMPERATURES WILL BE SIMILAR TO SATURDAY AND RISE INTO THE LOWER 80S ACROSS MUCH OF THE AREA. ALONG WITH THE CLOUDS, WE WILL SEE SOME SHOWERS PUSH INTO THE AREA STAYING MAINLY ACROSS THE WESTERN AREAS WHICH WILL BE CLOSER TO MAIN SYSTEM. THE BEST INSTABILITY WILL BE ACROSS THE WESTERN ZONES, MAINLY DURING THE AFTERNOON HOURS, AND WE INCLUDE THE MENTION OF A CHANCE OF THUNDER IN THOSE AREAS WITH A SLIGHT CHANCE EXTENDING EASTWARD. && .LONG TERM /SUNDAY NIGHT THROUGH SATURDAY/... THE GFS INITIALIZATION LOOKED BETTER THAN THE WRF-NMMB OVERALL, ALTHOUGH THE LATTER WAS BETTER WITH THE POSITIONING OF THE SFC LOW. IN SPITE OF THIS, THE GFS (AND ALSO THE CAN RGEM) VERIFICATION OF ONGOING PCPN LOOKED BETTER THROUGH 18Z. THE LONG TERM IN GENERAL LEANED THE GFS'S WAY. THERE HAS BEEN SOME RATHER LARGE MODELING FLIPS AMONG EACH OTHER AND INTERNALLY BETWEEN THE 00Z AND 12Z RUNS WITH THE REMNANTS OF ISAAC. FRIDAY AND SATURDAY DETAILS SHOULD BE VIEWED WITH LOWER CONFIDENCE THAN AVERAGE. STARTING WITH SUNDAY NIGHT, WHILE THE PRESENT LOWER MID ATLANTIC SFC LOW AND UPPER AIR SYSTEM SHOULD BE UNWINDING, THE MOISTURE ASSOCIATED WITH IT, SHOULD STILL BE STUCK IN OUR CWA. WHILE THE FORCING AND INSTABILITY ON SUNDAY WONT BE AS STRONG AS IT IS TO OUR SOUTH TODAY, CONVECTION SHOULD BE ONGOING AT THE START OF THE FORECAST PERIOD. HERE WE DID DIFFER FROM THE GFS IN THINKING THAT THE COOLER MARINE INFLUENCE FROM THE MARITIMES HIGH WILL HAVE MORE OF A THWARTING EFFECT THAN THE GFS HAS. HIGHEST POPS ARE KEPT TO THE WEST. BECAUSE OF THE CLOUDINESS AND RELATIVELY HIGH DEW POINTS, OUR MIN TEMPS LEAN TOWARD THE HIGHER GFS MOS. ON MONDAY AMPLE MOISTURE FOR CONVECTION WILL BE AROUND. GETTING RISKY TO RELY ON ACCURATE SHORT WAVE PLACEMENT AND TIMING, BUT WOULD FAVOR HIGHEST POPS NORTHWEST. THIS MAY BE RIGHT FOR THE WRONG REASON AS THE COLD FRONT WILL BE APPROACHING. THE OVERALL FORECAST THERMODYNAMIC FIELDS ARE NOT THAT IMPRESSIVE (ESPECIALLY MID LEVEL LAPSE RATES) AND NEITHER IS THE SFC BASED CAPE. ONE OF THE REASONS FOR THE FORMER IS THAT THE OVERALL FCST WIND FIELDS ARE NOT THAT STRONG. WITH FCST PWATS OF 1.5 TO 1.75 THE GREATEST CONCERNS MAY BE SOME HEAVY DOWNPOURS. BASED ON THE FCST 1000-850MB THICKNESSES AND 925MB TEMPERATURES THE WARMER GFS MOS (WHERE THE STAT GUIDANCE DIFFERS) LOOKS BETTER. THERMODYNAMICALLY, THE BETTER INSTABILITY IS FORECAST TO OCCUR ON MONDAY NIGHT AS THE COLD FRONT APPROACHES. A DECENT SHORT WAVE TROF IS FORECAST TO BE ENTERING OUR CWA OVERNIGHT AND BASED ON THE AVAILABLE INSTABILITY WOULD KEEP CONVECTIVE CHANCES GOING THROUGH THE NIGHT, AGAIN LOOKING BETTER NORTHWEST. MIN TEMPS WERE KEPT HIGH BECAUSE OF THE MUGGY DEW POINTS. IF THE MODELING IS CLOSE, THIS FIRST SHORT WAVE TROF SWEEPS THE DEEPER INSTABILITY INTO THE SOUTHEASTERN PART OF OUR CWA ON TUESDAY MORNING WITH POSSIBLY A SECOND TROF TO ACT AS A FOCUS AS THE COLD FRONT ITSELF MOVES THROUGH. WHILE THE MID LEVEL LAPSE RATES ARE FORECAST TO BE IN NEED OF SOME PED(S), THE FORECAST BULK SHEAR WILL BE INCREASING TO ADEQUATE LEVELS. HIS LOOKS LIKE ONE OF THE CASES WHERE THE SFC WINDS TURN WEST OR NORTHWEST AND BECOMES A QUESTION OF HOW QUICKLY THE DEW POINTS DROP AS TO CONVECTIVE CVRG AND STRENGTH. SO FOR THIS PACKAGE HIEST POPS ARE IN THE SERN PART OF OUR CWA WITH OVERALL POPS DECREASING AS THE AFTERNOON PROGRESSES FOR MOST OF OUR CWA. EITHER BY THE W TO NW SFC FLOW OR A SLOWER CFP IN GENERAL, WE PREFER GOING HIER THAN STAT GUIDANCE WITH MAX TEMPS. THEN AN OVERALL DRIER AND CLOSER TO SEASONABLE TEMPERATURE STRETCH IS FORECAST FOR TUESDAY NIGHT THROUGH THURSDAY. THERE IS PRETTY GOOD MODEL CONSENSUS INTO THURSDAY, BUT FALLS APART RATHER QUICKLY FOR FRIDAY AND SATURDAY AS RELATED TO THE REMNANTS OF ISAAC. THE 12Z ECMWF IS ABOUT 600 MILES EAST OF ITS NIGHT RUN POSITION COME FRIDAY MORNING WHILE THE GFS IS ABOUT 250 MILES FARTHER TO THE WEST THAN ITS NIGHT RUN POSITION. THIS HAS BEEN A RATHER NOSTALGIC LOOK WE'D PREFER TO NOT SEE AS TO HOW MUCH WILL OUR CFP TROF HELP STEER (OR NOT STEER) ISAAC FARTHER TO THE EAST. REGARDLESS IT WOULD BE FORTUITOUS FOR OUR CWA TO NOT BE AFFECTED IN ONE WAY OR ANOTHER BY ITS REMNANTS. OBVIOUSLY THE FASTER AND THE CLOSER THE REMNANT LOW GETS TO OUR CWA, THE HIGHER THE IMPACT. FOR NOW IT AND AN APPROACHING COLD FRONT ARE THE CAUSE OF THE POPS IN OUR FORECAST FOR FRIDAY NIGHT INTO SATURDAY. && .AVIATION /20Z SATURDAY THROUGH THURSDAY/... THE FOLLOWING DISCUSSION IS FOR KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY AND SURROUNDING AREAS. A TRICKY FORECAST FOR THE TAF SITES AS LOW PRESSURE PUSHES NORTHWARD FROM THE CAROLINAS AND HIGH PRESSURE PUSHES IN FROM THE NORTHEAST. FOR THE MOST PART, WE REMAIN VFR THROUGH THIS AFTERNOON AND INTO THIS EVENING. THE SHOWERS PUSHING ACROSS THE TERMINALS, MAINLY AFFECTING KACY AND KMIV, HAS BEEN LIGHT WITH NO RESTRICTIONS. HOWEVER, AS THE LOW PUSHES NORTHWARD, THE CHANCES FOR DETERIORATING CONDITIONS, ESPECIALLY CEILINGS, WILL INCREASE. WE HAVE INDICATED SHOWERS OCCURRING AT ALL THE TAF SITES THROUGH THE FORECAST, MAINLY INCREASING FROM SOUTH TO NORTH. WITH AMPLE MOISTURE AROUND, BUT LOW CONFIDENCE IN PRECIPITATION OCCURRING UNTIL THE MORNING, THERE IS THE CHANCE FOR SOME FOG TO DEVELOP ACROSS OUR NORTHERN TERMINALS, KRDG, KABE AND KTTN. OTHERWISE, MVFR CONDITIONS ARE NOT ANTICIPATED UNTIL THE SHOWERS PUSH FURTHER NORTH. WINDS WILL REMAIN OUT OF AN EASTERLY DIRECTION AND WILL INCREASE IN SPEED AS THE GRADIENT TIGHTENS UP BETWEEN THE HIGH AND LOW. SPEEDS AROUND 8-12 KNOTS CAN BE EXPECTED THROUGH THE PERIOD. FOR SUNDAY...SHOWERS ARE EXPECTED THROUGH MUCH OF THE FORECAST PERIOD. CONFIDENCE IS TOO LOW TO INCLUDE THUNDER IN THE FORECAST AT THIS TIME. OUTLOOK... SUNDAY NIGHT...MVFR CIGS AND VSBYS POSSIBLE. SHOWERS AND THUNDERSTORMS ALSO POSSIBLE, ESPECIALLY WEST. MONDAY...MAINLY VFR WITH LIKELY MVFR CONDITIONS IN SHOWERS AND THUNDERSTORMS. MONDAY NIGHT AND TUESDAY...GREATEST CHANCES FOR IFR CONDITIONS WITH EITHER SHOWERS AND THUNDERSTORMS OR MORNING FOG. GREATER VFR COVERAGE AS THE DAY PROGRESSES. TUESDAY NIGHT AND WEDNESDAY...VFR, POSSIBLE WED MRNG MVFR OR IFR FOG WHERE RAIN OCCURS LATER IN THE DAY ON TUESDAY. WEDNESDAY NIGHT AND THURSDAY...VFR. && .MARINE... SMALL CRAFT ADVISORY HAS BEEN EXTENDED THROUGH 1PM SUNDAY AND WE HAVE UPDATED IT TO INCLUDE ZONE 451 /OCEAN COUNTY COASTAL WATERS/. AS THE HIGH PRESSURE TO OUR NORTHEAST PUSHES SOUTHWESTWARD AND THE LOW PRESSURE MOVES NORTHWARD FROM THE CAROLINAS INTO VIRGINIA, WE WILL SEE A TIGHTENING OF THE PRESSURE GRADIENT OCCUR. ALTHOUGH EAST TO NORTHEAST WINDS WILL GUST AROUND 20 KNOTS, MAYBE A FEW 25 KNOT GUSTS, THE BIGGER CONCERN WILL BE WITH THE SEAS. WAVES ARE ALREADY 5 FEET AT BUOY 44009 AND WITH THE SHORT PERIOD SWELLS WE ARE SEEING SOME PRETTY CHOPPY WATERS OUT THERE. AS THE LOW CONTINUES TO TRY TO PUSH NORTHWARD, THERE IS LITTLE GIVE FROM THE HIGH, THE SEAS WILL GRADUALLY INCREASE FROM SOUTH TO NORTH. SEAS START TO DECREASE AS THE GRADIENT STARTS TO LOOSEN UP. SEAS SHOULD SUBSIDE BELOW SMALL CRAFT CRITERIA BY SUNDAY AFTERNOON. WINDS WILL BE STRONGEST TONIGHT INTO EARLY SUNDAY AND THEN DECREASING THROUGH SUNDAY. OUTLOOK... WE ARE NOT OUTLOOKING ANY SCA CONDITIONS. SUNDAY EVENING WE ARE EXPECTING SEAS TO DROP BELOW CRITERIA, ALTHOUGH CONFIDENCE IS ONLY AVERAGE. SEAS SHOULD BE SUBSIDING AS THE NIGHT PROGRESSES. MONDAY SHOULD SEE AN OVERALL SW FLOW. THE LOW LEVEL JET IS FORECAST TO INCREASE MONDAY PRECEDING THE COLD FRONT. GUIDANCE WITH BOTH WINDS AND SEAS (GOOD SIGN AS THEY ARE NORMALLY TOO AGGRESSIVE WITH SEAS) ARE KEEPING US BELOW SCA CRITERIA. THERE COULD BE SOME SPECIAL MARINE WARNING TSTMS MONDAY NIGHT OR TUESDAY. THE FLOW BEHIND THE COLD FRONT IS NOT FORECAST TO BE STRONG ENOUGH TO COME CLOSE TO SMALL CRAFT ADVISORY CRITERIA AS HIGH PRESSURE WILL NOT BE TOO STRONG. && .RIP CURRENTS... RIP CURRENT REPORT WAS IN THE MODERATE RISK RANGE TODAY. BUT, WE MIGHT REACH HIGH RISK ON SUNDAY. CONDITIONS SHOULD IMPROVE EARLY NEXT WEEK. && .PHI WATCHES/WARNINGS/ADVISORIES... PA...NONE. NJ...NONE. DE...NONE. MD...NONE. MARINE...SMALL CRAFT ADVISORY UNTIL 1 PM EDT SUNDAY FOR ANZ451>455. && SYNOPSIS...GIGI/MIKETTA NEAR TERM...MEOLA SHORT TERM...MEOLA LONG TERM...GIGI AVIATION...GIGI/MEOLA/MIKETTA MARINE...GIGI/MEOLA RIP CURRENTS...MEOLA
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 359 PM EDT SAT AUG 25 2012 NJZ001-007>010-012-013-015-017>020-022-027-PAZ054-055-060>062- 068>071-262000- SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-WESTERN MONMOUTH- MERCER-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-ATLANTIC- SOUTHEASTERN BURLINGTON-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON- MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- 359 PM EDT SAT AUG 25 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR 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. HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. SHOWERS AND THUNDERSTORMS WITH LOCALLY HEAVY RAIN ARE POSSIBLE MONDAY INTO TUESDAY. THERE IS ALSO A CHANCE ON SUNDAY MAINLY IN PENNSYLVANIA. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. DEZ001>003-MDZ008-012-015-019-020-NJZ016-021-023-PAZ067-262000- NEW CASTLE-KENT-INLAND SUSSEX-CECIL-KENT MD-QUEEN ANNES-TALBOT- CAROLINE-SALEM-CUMBERLAND-CAPE MAY-CHESTER- 359 PM EDT SAT AUG 25 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL DELAWARE...NORTHERN DELAWARE...SOUTHERN DELAWARE...NORTHEAST MARYLAND...SOUTHERN NEW JERSEY AND SOUTHEAST PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. THERE IS A CHANCE FOR THUNDERSTORMS WITH HEAVY RAIN, MAINLY IN DELMARVA. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. THERE IS A CHANCE FOR THUNDERSTORMS WITH HEAVY RAIN. SHOWERS AND THUNDERSTORMS WITH LOCALLY HEAVY RAIN ARE POSSIBLE MONDAY INTO TUESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. DEZ004-NJZ014-024>026-262000- DELAWARE BEACHES-EASTERN MONMOUTH-ATLANTIC COASTAL CAPE MAY- COASTAL ATLANTIC-COASTAL OCEAN- 359 PM EDT SAT AUG 25 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHERN DELAWARE...CENTRAL NEW JERSEY AND SOUTHERN NEW JERSEY. .DAY ONE...THIS AFTERNOON AND TONIGHT. THERE IS A MODERATE RISK OF RIP CURRENTS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. THERE IS A MODERATE, POSSIBLY HIGH, RISK OF RIP CURRENTS FOR SUNDAY. THE MODERATE RISK OF RIP CURRENTS MAY LINGER INTO THE EARLY PART OF THE NEW WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. ANZ430-431-450>455-262000- 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- 359 PM EDT SAT AUG 25 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS AND DELAWARE BAY WATERS. .DAY ONE...THIS AFTERNOON AND TONIGHT. STRONG THUNDERSTORMS ARE POSSIBLE TONIGHT MAINLY OFF THE DELAWARE COASTAL WATERS. HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. STRONG THUNDERSTORMS ARE POSSIBLE AROUND THE TIME OF THE COLD FRONTAL PASSAGE MONDAY NIGHT INTO TUESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
315 PM EDT SAT AUG 25 2012
DEZ003-004-252015-
DELAWARE BEACHES DE-INLAND SUSSEX DE-
315 PM EDT SAT AUG 25 2012
...SHOWERS PRODUCING HEAVY RAINFALL IN SUSSEX COUNTY...
DURING THE BALANCE OF THIS AFTERNOON, RAIN SHOWERS WITH HEAVY
RAINFALL WILL CONTINUE TO SPREAD INTO SUSSEX COUNTY FROM THE
SOUTHEAST.
THE HEAVY RAIN MAY CAUSE PONDING OF WATER ON ROADWAYS. IT WILL ALSO
RESULT IN REDUCED VISIBILITY. IF YOU WILL BE DRIVING, BE SURE TO
LEAVE PLENTY OF ROOM BETWEEN YOUR VEHICLE ON THE ONE AHEAD OF YOU.
THE RAIN SHOWERS MAY BE ACCOMPANIED BY WIND GUSTS AROUND 30 MPH.
OCCASIONAL LIGHTNING IS ALSO POSSIBLE.
LAT...LON 3846 7537 3846 7569 3883 7572 3884 7556
3889 7551 3892 7541 3895 7539 3895 7531
3891 7530 3880 7517 3879 7511 3880 7509
3861 7504 3845 7505 3844 7535
IOVINOSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
410 PM EDT SAT AUG 25 2012
DEZ003-004-252130-
DELAWARE BEACHES DE-INLAND SUSSEX DE-
410 PM EDT SAT AUG 25 2012
...SHOWERS PRODUCING HEAVY RAINFALL IN SUSSEX COUNTY...
DURING THE BALANCE OF THIS AFTERNOON AND INTO THIS EVENING, RAIN
SHOWERS WITH HEAVY RAINFALL WILL CONTINUE TO SPREAD INTO SUSSEX
COUNTY FROM THE SOUTHEAST. AT 400 PM, NATIONAL WEATHER SERVICE
DOPPLER RADAR INDICATED THAT OVER AN INCH OF RAIN HAD ALREADY FALLEN
IN THE SOUTHWESTERN PART OF THE COUNTY AROUND LAUREL AND DELMAR.
THE HEAVY RAIN WILL CAUSE PONDING OF WATER ON ROADWAYS. IT WILL ALSO
RESULT IN REDUCED VISIBILITY. IF YOU WILL BE DRIVING, BE SURE TO
LEAVE PLENTY OF ROOM BETWEEN YOUR VEHICLE ON THE ONE AHEAD OF YOU.
THE RAIN SHOWERS MAY BE ACCOMPANIED BY WIND GUSTS AROUND 30 MPH.
OCCASIONAL LIGHTNING IS EXPECTED.
LAT...LON 3846 7569 3883 7572 3884 7556 3891 7547
3892 7541 3895 7539 3895 7532 3890 7529
3880 7517 3879 7511 3880 7509 3861 7504
3845 7505
IOVINOSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
519 PM EDT SAT AUG 25 2012
DEZ003-004-252245-
DELAWARE BEACHES DE-INLAND SUSSEX DE-
519 PM EDT SAT AUG 25 2012
...THUNDERSTORMS PRODUCING HEAVY RAINFALL IN SUSSEX COUNTY...
INTO THE EARLY EVENING HOURS, THUNDERSTORMS WITH HEAVY RAINFALL WILL
CONTINUE TO SPREAD INTO SUSSEX COUNTY FROM THE SOUTH AND SOUTHEAST.
AT 500 PM, NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT UP
TO AN INCH OR TWO OF RAIN HAD ALREADY FALLEN IN THE SOUTHWESTERN
PART OF THE COUNTY AROUND LAUREL AND DELMAR.
THE HEAVY RAIN WILL CAUSE PONDING OF WATER ON ROADWAYS. IT WILL ALSO
RESULT IN REDUCED VISIBILITY. IF YOU WILL BE DRIVING, BE SURE TO
LEAVE PLENTY OF ROOM BETWEEN YOUR VEHICLE ON THE ONE AHEAD OF YOU.
THE THUNDERSTORMS MAY BE ACCOMPANIED BY WIND GUSTS AROUND 45 MPH
ALONG WITH DANGEROUS CLOUD TO GROUND LIGHTNING. IF YOU OBSERVE
THREATENING WEATHER, SEEK SHELTER AT ONCE.
LAT...LON 3846 7569 3883 7572 3884 7556 3891 7547
3892 7541 3895 7539 3895 7532 3890 7529
3880 7517 3879 7511 3880 7509 3861 7504
3845 7505 3845 7560
IOVINOThe Dover AFB radar (KDOX), 31 km away, was scanning. The volume nearest the first event began at 23:29 UTC.
2 flash flood. Local standard time, as filed.
Thunderstorms with torrential downpours caused roadway flash flooding in Rehoboth Beach. First Street was under two feet of water and at least one resort garage was flooded. Over two dozen vehicles were damaged. Event precipitation total was 7.21 inches.
Thunderstorms with torrential downpours caused flash flooding in Eastern Sussex County. The hardest hit area was in and around Long Neck. Many roadways were flooded and closed. One road collapsed in Oak Orchard. In Oak Orchard, River Road was under water and the bulkhead of one home was damaged at the Riverwinds Development. Holly Lake Road was also closed Flooding was also reported along Beaver Dam Road and Delaware State Ropute 5. Along the coast, Delaware State Route 1 in Dewey Beach and Delaware State Route 26 leading into Bethany Beach were flooded. Event precipitation totals included 7.21 in Rehoboth Beach, 6.83 inches in Harbeson, 6.39 inches in Bethany Beach and 5.76 inches in Indian River Inlet.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Delaware in 2012Every state in 2012This day in weather historyWarnings in Delaware, August 2012
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: 409936, 409933.