The combination of a stalled frontal boundary, extending from the Pennsylvania/Maryland border eastward across southern New Jersey, and a series of upper level disturbances resulted in numerous slow-moving thunderstorms from the afternoon of the 22nd through the early morning of the 23rd. These thunderstorms produced torrential rain and some wind damage.
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.
The combination of a stalled frontal boundary, extending from the Pennsylvania/Maryland border eastward across southern New Jersey, and a series of upper level disturbances resulted in numerous slow-moving thunderstorms from the afternoon of the 22nd through the early morning of the 23rd. These thunderstorms produced torrential rain and some wind damage. Storm total rainfall measurements ranged mainly between 2 and 7 inches across eastern Pennsylvania.
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 22, 10:09 PM EST, 2 hours 11 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1109 PM EDT MON JUL 22 2013 .SYNOPSIS... LOW PRESSURE FROM THE OHIO VALLEY TO THE DELMARVA WILL ORGANIZE INTO ONE PRIMARY LOW OVER SOUTHEASTERN NEW YORK STATE LATE TUESDAY AFTERNOON. IN ITS WAKE, WEAK HIGH PRESSURE OVER THE UPPER MIDWEST ON TUESDAY WILL FOLLOW INTO THE NORTHEAST UNITED STATES WEDNESDAY INTO FRIDAY. A COMPLEX LOW PRESSURE SYSTEM AND ASSOCIATED FRONTAL BOUNDARIES WILL GRADUALLY EVOLVE FROM THE GREAT LAKES TO THE EAST COAST THURSDAY THROUGH NEXT WEEKEND, WITH AN EVENTUAL COLD FRONTAL PASSAGE SCHEDULED FOR LATE SUNDAY OR MONDAY. && .NEAR TERM /UNTIL 6 AM TUESDAY MORNING/... AN ANALYSIS SHOWS MESOSCALE/SYNOPTIC SCALE FORCING AHEAD OF A STRONG BUT SLOW MOVING SHORT WAVE IS FOCUSED ACROSS SOUTHEASTERN PENNSYLVANIA. THERE IS ALSO A PERSISTENT AREA OF LOW-LEVEL MOISTURE CONVERGENCE TEAMING UP ALONG A STALLED WEAK FRONTAL BOUNDARY. THIS IN COMBINATION WITH PW VALUES AROUND 2 INCHES IS HELPING TO PRODUCE RATHER EFFICIENT RAINFALL RATES. THE SHORT TERM MODEL GUIDANCE TENDS TO SHIFT THIS AREA NORTHEASTWARD FROM NEAR AND NORTH/WEST OF INTERSTATE 95 OVERNIGHT AND GRADUALLY WEAKEN. OVERALL, SOME FLOODING COULD RESULT FROM THIS ACTIVITY AS IT LIFTS NORTHEASTWARD. OTHERWISE, SHOWERS AND SCATTERED THUNDERSTORMS ARE EXPECTED TO PERSIST FOR MUCH OF THE NIGHT ACROSS OUR NORTHWESTERN COUNTIES AS THE PRECIPITATION TO OUR WEST LIFTS NORTHEASTWARD IN RESPONSE TO IMPULSES TRAVELING IN THE MID LEVEL FLOW. TORRENTIAL RAINFALL FROM EARLIER RESULTED IN SOME IMPRESSIVE RAINFALL AMOUNTS. HERE AT WFO MOUNT HOLLY, WE RECEIVED OVER 3 INCHES OF RAIN BETWEEN 730 PM AND 900 PM. AN AUTOMATED GAUGE INDICATED OVER 5 INCHES OF RAIN AT JACKSON, NEW JERSEY DURING THE LATE AFTERNOON AND EARLY EVENING. A NUMBER OF LOCATIONS IN EASTERN PENNSYLVANIA AND NORTHERN AND CENTRAL NEW JERSEY RECEIVED 1 TO 3 INCHES OF RAIN WITH LOCALLY HIGHER AMOUNTS. THERE WAS ALSO A SWATH OF HEAVY RAINFALL FROM NORTHERN KENT COUNTY INTO NEW CASTLE COUNTY IN DELAWARE. MUCH OF THE OVERNIGHT PERIOD SHOULD BE PRECIPITATION-FREE IN DELAWARE, MOST OF NORTHEASTERN MARYLAND AND SOUTHEASTERN NEW JERSEY. THERE MAY BE LOW CLOUDS AND FOG LATE TONIGHT AS THE SHOWERS/THUNDER WEAKEN AND LIGHT WINDS CONTINUE. && .SHORT TERM /6 AM TUESDAY MORNING THROUGH 6 PM TUESDAY/... SHOWERS AND THUNDERSTORMS REMAIN A GOOD POSSIBILITY INTO TUESDAY AS A SHORT WAVE TROUGH ALOFT WILL BE SLIDING ACROSS THE AREA DURING THE DAY. THE FRONT THAT WAS DRAPED ACROSS OUR AREA TODAY /MONDAY/ IS EXPECTED TO HAVE LIFTED NORTH OF OUR AREA BY DAYBREAK TUESDAY. THERE WILL REMAIN A FAIR AMOUNT OF INSTABILITY AND PW VALUES ARE EXPECTED TO REMAIN AROUND 2-2.25 INCHES AGAIN, SO HEAVY RAIN WILL REMAIN A POSSIBILITY, ESPECIALLY AS WE MOVE INTO THE AFTERNOON AND ANY THUNDERSTORMS DEVELOP. HIGHEST POPS WILL REMAIN FROM LATE MORNING INTO THE AFTERNOON HOURS WHICH COINCIDES WITH THE TIMING OF THE VORTICITY IMPULSE. HIGH TEMPERATURES WILL DEPEND ON HOW MUCH SUN WE GET ON TUESDAY. THE MAV MOS GIVES THE AREA A FAIR AMOUNT OF SUNSHINE DURING THE DAY, WHILE THE MET KEEPS THINGS MORE CLOUDY. HENCE THE REASON THE MAV IS QUITE A BIT WARMER THAN THE MET. THEREFORE WE TOOK A BLEND OF THE GUIDANCE, WITH THE MAJORITY OF THE WARMER GFS. && .LONG TERM /TUESDAY NIGHT THROUGH MONDAY/... **POTENTIAL FOR SEASONABLY COOL SUMMER WEATHER AND NOTICEABLY LOWER HUMIDITY WED AFTN-FRI** 500 MB: THE OVERALL SYNOPTIC SETUP IS AN UPPER LEVEL TROUGH IN THE EASTERN UNITED STATES. THIS FEATURE WILL ADJUST AMPLITUDE A FEW TIMES AS NUMEROUS SHORT WAVES PASS THROUGH THE TROUGH. THIS PATTERN HAS OPPORTUNITY TO CONTINUE THE RECENT EVOLUTION TO BEING WET HERE IN OUR CWA FOR MUCH OF THE UPCOMING WEEK BUT...THE PAST SEVERAL CYCLES OF THE GFS GGEM MODELS AND THEIR ENSEMBLES PREFER TO DELIVER AN EXTENDED PERIOD OF PLEASANT WEATHER TO OUR AREA WEDNESDAY INTO EARLY SATURDAY. FOR NOW...MOST OF THE OF THE 12Z/22 MODELS AGREE ON THE DRY SCENARIO FOR SEVERAL DAYS EXCEPT POSSIBLY THE NAM AND UKMET. THIS DETERMINISTIC FORECAST IS BASED ON THE DRIER SCENARIO BUT AM NOT CONVINCED. ADJUSTMENTS IN THE SHORT WAVE STRUCTURE COULD MAKE FOR A WETTER OUTCOME THURSDAY NIGHT AND FRIDAY. TEMPERATURES: CALENDAR DAY AVERAGES STILL PROBABLY ABOVE NORMAL THROUGH WEDNESDAY AND THEN FINALLY THURSDAY AND FRIDAY..FINALLY!...BOTH DAYS SHOULD BE BELOW NORMAL. NEAR OR SLIGHTLY ABOVE NORMAL TEMPS ARE OUTLOOKED SAT-MON. ANY CALENDAR DAY BELOW NORMAL TEMPS IN OUR AREA ARE NOTEWORTHY...IN THAT VIRTUALLY EVERY DAY HERE HAS BEEN ABOVE NORMAL SINCE THE 22ND- 23RD OF JUNE! PLEASE SEE THE CLIMATE SECTION FOR DETAILS. THE FCST LOW TEMP OF AROUND 64 FOR PHILADELPHIA THURSDAY MORNING THE 25TH IS PROJECTED TO BE THE COOLEST SINCE THE 61 DEGREES OF JUNE 22! THE FORECAST TEMPS/DEWS/WINDS FOR TUE NIGHT-WED NIGHT ARE A 50 50 BLEND OF THE 12Z/22 GFS/NAM MOS (STAT GUIDANCE) WITH 03Z/22 SREF PROBS BLENDED FOR THE POPS. THEREAFTER...THE 15Z/22 HPC-WPC GUIDE WAS USED AS THE BASE INFORMATION FOR WED-MON WITH OCNL STEADYING BLENDS OF THE 08Z/22 KPHI FCST AND THE NEW 12Z/22 GFS MEX MOS AS WELL AS A CHECK OF THE 12Z UK AND EC. TUESDAY NIGHT...LEFTOVER SHOWERS AND SCT TSTMS WITH HEAVY RAIN DIMINISHING AND EVENTUALLY ENDING FM W TO E AS THE PRIMARY TROUGH SHIFTS OFFSHORE. ITS POSSIBLE THAT THE EVENING REMAINS MAY QUIT FOR 6 HOURS AND THAT ONE FINAL LINE OF SHOWERS AND ISOLATED TSTMS WILL CROSS THE POCONOS AND NORTHERN NEW JERSEY BETWEEN 06Z-10Z/24 (LATE TUESDAY NIGHT). SO THE FCST POPS AND TIMING SCENARIO OF THE SHOWERS FOR TUESDAY NIGHT IS FCST WITH MUCH BELOW AVERAGE CONFIDENCE. WEDNESDAY...EVENTUALLY LOWER HUMIDITY DURING THE AFTERNOON FOR AT LEAST A DAY AND MAYBE ONE OF THE MOST ENJOYABLE AFTERNOONS OF THE WEEK. PLENTY OF SUNSHINE IS EXPECTED. THE NORTHWEST WIND SHOULD GUST TO 15 MPH. WEDNESDAY NIGHT...FAIR...DRY AND COOLER THAN NORMAL. COOLEST SINCE AROUND JUNE 22. THURSDAY FRIDAY...HAVE FCST AN ESSENTIALLY DRY SEASONABLY COOL SCENARIO DESPITE TROUGHING ALOFT. HIGH PRESSURE SPREADS TO OUR NORTH. THIS PORTION OF THE FCST HAS BELOW AVG CONFIDENCE. WARM AIR ADVECTION MAY BE MORE SIGNIFICANT THAN NOW MODELED WITHIN THE 12Z/22 GUIDANCE. THAT COULD RESULT MORE CLOUD COVER...HIGHER RH AND A CHANCE OF SHOWERS. SATURDAY...WAA IN PROGRESS AND THIS MAY PRODUCE SCT SHOWERS AND ISOLATED TSTMS LATE IN THE DAY OR AT NIGHT. SUNDAY...CFP APPROACHING FROM THE WEST WITH A CHANCE OF SHOWERS AND TSTMS. CONFIDENCE AVG. THE FCST POPS ARE PROBABLY TOO LOW. MONDAY...THE CFP MAY HANG UP ALONG THE COAST DEPENDING ON WHETHER ANOTHER SHORT WAVE PASSES THROUGH THE BOTTOM OF THE TROUGH OVER THE OHIO VALLEY? CONFIDENCE AVG. && .AVIATION /03Z TUESDAY THROUGH SATURDAY/... THE FOLLOWING DISCUSSION IS FOR KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY AND SURROUNDING AREAS. SHOWERS AND SCATTERED THUNDERSTORMS ARE EXPECTED TO AFFECT KRDG AND KABE FOR MUCH OF THE NIGHT. MEANWHILE, THE SHOWERS AND SCATTERED THUNDERSTORMS AROUND KPNE AND KTTN THIS EVENING DIMINISHED. SHOWERS AND POSSIBLE THUNDER MADE NEED TO BE ADDED TO KILG, KPHL, KPNE AND KTTN AS THE LARGE AREA OF SHOWERS/THUNDER IN PORTIONS OF SOUTHEASTERN PENNSYLVANIA WILL SLIDE VERY CLOSE TO THESE TERMINALS THROUGH 06Z. THE ABUNDANT LOW LEVEL MOISTURE IS EXPECTED TO RESULT IN THE DEVELOPMENT OF LOW CLOUDS AND VISIBILITY RESTRICTIONS OVERNIGHT. FOLLOWING EARLY MORNING LOW CLOUDS, FOG AND HAZE, ANOTHER AREA OF SHOWERS AND THUNDERSTORMS IS FORECAST TO AFFECT OUR REGION ON TUESDAY. AS A RESULT, FLYING CONDITIONS WILL BE LESS THAN IDEAL. A LIGHT WIND IS EXPECTED FOR TONIGHT. IT WILL BE VARIABLE AT MOST LOCATION AND IT MAY FAVOR THE SOUTH AT OTHERS. A SOUTH TO SOUTHWEST WIND AROUND 5 TO 10 KNOTS IS ANTICIPATED FOR TUESDAY. THE DIRECTION IS EXPECTED TO VEER TOWARD THE WEST LATE IN THE DAY. OUTLOOK... TUESDAY NIGHT...VFR CIGS WITH MVFR/IFR CONDS POSSIBLE IN SHOWERS/SCT TSTMS/PATCHY ST-FOG. LIGHT S WIND BECOMING NW. WEDNESDAY...VFR WITH SCT TO BRIEFLY BKN CLOUDS AOA 5000 FT. NORTHWEST WINDS G15 KNOTS IN THE AFTN. THURSDAY FRIDAY...FCSTG VFR SCT-BKN CLOUDS AOA 5000 FT. LIGHT WIND. CONFIDENCE BELOW AVG. A SLIGHT SHIFT IN THE UPPER AIR PATTERN WOULD INCREASE THE HUMIDITY...LOWER THE CIGS AND ADD SHOWERS TO THE FCST. FOR NOW... THE FCST IS OPTIMISTIC = DRY. SATURDAY...PROBABLY VFR...MIGHT BE A LITTLE BIT OF FOG EARLY IN THE DAY AND SHOWERS OR A TSTM POSSIBLE LATE DAY OR NIGHT. && .MARINE... CONDITIONS ON THE WATERS ARE EXPECTED TO REMAIN BELOW SMALL CRAFT ADVISORY LEVELS THROUGH TUESDAY. A FRONTAL BOUNDARY WILL LIFT ACROSS THE WATERS BY TUESDAY MORNING, WHICH WILL SHIFT WINDS FROM MORE EAST-SOUTHEAST TO SOUTH-SOUTHWEST. OUTLOOK... NO MARINE HEADLINES ANTICIPATED THROUGH AT LEAST SATURDAY. GFS WW3 TENDS TO FORECAST WITH A HIGH BIAS IN SOUTHERLY FLOW WARM AIR ADVECTION (WAA). THE MODELED AND VERIFIED SSE 3 FT 7 SEC SWELL OF THIS MORNING PROBABLY EASES TO 2 FT WED AND THU. THEN ON FRI AND SAT WE EXPECT MOSTLY A 1 FT 10 SEC SWELL. ALL THIS QUIET SEA STATE IS RELATED TO THE LACK OF ANY TROPICAL SYSTEMS IN OUR ATLANTIC BASIN. && .TIDES/COASTAL FLOODING... THE COASTAL FLOOD ADVISORY WAS ALLOWED TO EXPIRE AT 1100 PM. WE MAY NEED ANOTHER ADVISORY FOR TUESDAY EVENING'S HIGH TIDE. WE WILL SEE HOW THE TIDAL DEPARTURE TRENDS DEVELOP DURING THE NIGHT AND ON TUESDAY MORNING. && .RIP CURRENTS... OUR LOCAL PROGRAM CALCULATED A MODERATE RISK OF RIP CURRENTS ALONG THE NEW JERSEY SHORE FOR TUESDAY BASED ON A SOUTH SOUTHWEST WIND AROUND 10 TO 12 KNOTS ALONG WITH 4 FOOT SEAS AND AN 8 SECOND WAVE PERIOD. THE PROGRAM DETERMINED THAT THERE WOULD BE A LOW RISK FOR THE DELAWARE BEACHES. && .EQUIPMENT... THE KNEL /LAKEHURST/ TEMPERATURE DATA IS INACCURATE AND HAS BEEN SINCE ABOUT MARCH 9TH. IT IS RUNNING ABOUT 8 TO 10 DEGREES TOO WARM AND THE PROBLEM IS PARTICULARLY NOTICEABLE DURING THE DAYTIME HOURS. USE OF THIS INFORMATION BY THE NWS WAS SUSPENDED IN EARLY APRIL HERE AT MOUNT HOLLY WHERE WE NO LONGER POSTED THE INFORMATION IN OUR HOURLY WEATHER ROUND UP AND THE TWICE DAILY REGIONAL TEMPERATURE AND PRECIPITATION SUMMARY SENT AT 815 AM AND PM. WE ARE DEEPLY CONCERNED WITH RECENT MEDIA REPORTS CITING THIS ERRONEOUS DATA, AND IN SOME CASES ATTRIBUTING IT TO THE NWS. KNEL IS A DOD SITE AND HAS BEEN NOTIFIED MULTIPLE TIMES THAT THEIR DATA IS IN ERROR. NO CORRECTIVE ACTION HAS BEEN TAKEN THAT WE ARE AWARE OF. PLEASE BE EXTREMELY CAUTIOUS WITH THIS DATA SET. THE NWS IN MOUNT HOLLY DOES NOT USE IT. THANK YOU. && .PHI WATCHES/WARNINGS/ADVISORIES... PA...NONE. NJ...NONE. DE...NONE. MD...NONE. MARINE...NONE. && SYNOPSIS...DRAG NEAR TERM...GORSE/IOVINO SHORT TERM...ROBERTSON LONG TERM...DRAG/ROBERTSON AVIATION...DRAG/IOVINO MARINE...DRAG/ROBERTSON TIDES/COASTAL FLOODING...IOVINO RIP CURRENTS...IOVINO EQUIPMENT...DRAG
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1115 PM EDT MON JUL 22 2013 DEZ001-MDZ008-012-015-019-020-NJZ001-007>010-015>019-PAZ054-055- 060>062-070-071-101>106-240315- NEW CASTLE-CECIL-KENT MD-QUEEN ANNES-TALBOT-CAROLINE-SUSSEX-WARREN- MORRIS-HUNTERDON-SOMERSET-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- 1115 PM EDT MON JUL 22 2013 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...TONIGHT. LOCAL POOR DRAINAGE FLOODING MAY OCCUR ASSOCIATED WITH HEAVY SHOWERS AND SCATTERED THUNDERSTORMS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. LOCAL POOR DRAINAGE FLOODING MAY OCCUR TUESDAY ASSOCIATED WITH HEAVY SHOWERS AND SCATTERED THUNDERSTORMS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. DEZ002>004-NJZ012-013-020>023-027-240315- KENT-INLAND SUSSEX-DELAWARE BEACHES-MIDDLESEX-WESTERN MONMOUTH-OCEAN- CUMBERLAND-ATLANTIC-CAPE MAY-SOUTHEASTERN BURLINGTON- 1115 PM EDT MON JUL 22 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL DELAWARE...SOUTHERN DELAWARE...CENTRAL NEW JERSEY...NORTHERN NEW JERSEY AND SOUTHERN NEW JERSEY. .DAY ONE...TONIGHT. THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. LOCAL POOR DRAINAGE FLOODING MAY OCCUR TUESDAY ASSOCIATED WITH SCATTERED THUNDERSTORMS. THERE IS A CHANCE OF MINOR COASTAL FLOODING WITH THE TUESDAY EVENING HIGH TIDE CYCLE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. NJZ014-024>026-240315- EASTERN MONMOUTH-ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC- COASTAL OCEAN- 1115 PM EDT MON JUL 22 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW JERSEY AND SOUTHERN NEW JERSEY. .DAY ONE...TONIGHT. THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. THERE IS A MODERATE RISK OF RIP CURRENTS ON TUESDAY. LOCAL POOR DRAINAGE FLOODING MAY OCCUR TUESDAY ASSOCIATED WITH SCATTERED THUNDERSTORMS. THERE IS A CHANCE OF MINOR COASTAL FLOODING WITH THE TUESDAY EVENING HIGH TIDE CYCLE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. ANZ430-431-450>455-240315- 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- 1115 PM EDT MON JUL 22 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS AND DELAWARE BAY WATERS. .DAY ONE...TONIGHT. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1047 PM EDT MON JUL 22 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0505 PM TSTM WND DMG JACKSON TWP 40.12N 74.35W
07/22/2013 OCEAN NJ PUBLIC
TREES DOWN AND ROOF DAMAGE.
&&
EVENT NUMBER PHI1300305
IOVINOSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1211 AM EDT TUE JUL 23 2013
MDZ008-PAZ101-102-230545-
CECIL MD-EASTERN CHESTER PA-WESTERN CHESTER PA-
1211 AM EDT TUE JUL 23 2013
...A STRONG THUNDERSTORM WILL AFFECT CHESTER AND NORTHWESTERN CECIL
COUNTIES...
AT 1208 AM EDT...A STRONG THUNDERSTORM WAS NEAR SCARBORO...MOVING
NORTHEAST AT 25 MPH.
WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THIS STORM. FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. DO NOT STAY IN THE
OPEN NOR SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE
INDOORS WHEN A THUNDERSTORM APPROACHES. THIS STORM WILL BE NEAR PORT
DEPOSIT...AND PERRYVILLE AROUND 1220 AM...ROCK SPRINGS...ROCK
SPRINGS...CONOWINGO...AND CONOWINGO AROUND 1230 AM...RISING SUN...
RISING SUN...FARMINGTON AND FARMINGTON AROUND 1240 AM.
LAT...LON 3973 7614 3979 7605 3988 7599 3997 7600
4003 7594 4012 7593 4024 7571 4017 7552
4015 7552 4016 7550 4013 7551 4012 7546
4009 7545 4009 7542 3952 7599 3955 7603
3954 7605 3972 7623
NIERENBERGPRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1236 AM EDT TUE JUL 23 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0505 PM TSTM WND DMG JACKSON TWP 40.12N 74.35W
07/22/2013 OCEAN NJ PUBLIC
TREES DOWN AND ROOF DAMAGE.
1230 AM FLASH FLOOD WYOMISSING 40.33N 75.95W
07/23/2013 BERKS PA TRAINED SPOTTER
WYOMISSING CREEK QUICKLY OUT OF ITS BANKS. FLOODING
REPORTED AT THE CAMBRIDGE COMMONS APARTMENT COMPLEX
INCLUDING WATER INTO THE MAINTENANCE BUILDING.
&&
EVENT NUMBER PHI1300305 PHI1300306
GORSEThe Philadelphia radar (KDIX), 102 km away, was scanning. The volume nearest the first event began at 05:21 UTC.
3 thunderstorm wind, 1 lightning. Local standard time, as filed.
The combination of gusty thunderstorm winds and heavy rain brought down a few trees in West Chester Township and caused some damage to yards and patio furniture around 120 a.m. EDT on the 23rd.
The combination of gusty thunderstorm winds and heavy rain brought down a few trees in West Goshen Township at 121 a.m. EDT on the 23rd.
A severe thunderstorm produced a 60 mph wind gust, measured at the Philadelphia International Airport at 141 a.m. EDT. Radar imagery showed this thunderstorm wind gust to be the result of a wet microburst. The airport weather observer confirmed the occurrence of the wind gust. Elsewhere in the city, a downed tree forced the suspension of SEPTA commuter rail service between Center City and Thorndale in Chester County. Service was restored later that day, but 30 minute delays along the line continued.
Lightning from early morning thunderstorms struck a residential building along the 800 block of Blooming Glen Road in Hilltown Township at 215 a.m. EDT on the 23rd. The lightning strike started a fire on the third floor and the roof. All residents of the building escaped without injury. The residents were expected to be displaced for about two to five months due to the damaged roof and third floor.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2013Every state in 2013This day in weather historyWarnings in Pennsylvania, July 2013
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: 470417, 470413, 467595, 470378.