Excessive Heat and Heat in Delaware, June 29, 2012

Name: Excessive Heat and Heat in Delaware, June 29, 2012
Start: 2012-06-29T11:00
End: 2012-06-29T19:00
Location: Delaware

June 29, 2012 · NWS PHI · 4 events in 4 counties and zones

An unseasonably hot and humid day produced high temperatures of around 100 degrees in Delaware on the 29th. Combined with the humidity levels, maximum heat indices reached between 105F and 110F.

Where it happened

Every event with a place to put it; 4 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 4

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.

What happened

The episode as NWS PHI wrote it up.

An unseasonably hot and humid day produced high temperatures of around 100 degrees in Delaware on the 29th. Combined with the humidity levels, maximum heat indices reached between 105F and 110F. Because of the heat, Delaware Park did not resume thoroughbred racing until July 2nd. The heat then set the stage for the powerful derecho that moved through the state later that evening. High temperatures on the 29th included 101 degrees in Georgetown (Sussex County), 98 degrees in Dover (Kent County) and 97 degrees at the New Castle County Airport. While high temperatures on the 30th reached into the 90s, the derecho brought in slighter cooler and drier air in its wake.

What forecasters said that day

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 29, 10:44 AM EST, 16 minutes earlier.

Area forecast discussion, Jun 29, 10:44 AM EST, 16 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1144 AM EDT FRI JUN 29 2012

.SYNOPSIS...
A WARM FRONT WILL CROSS OUR AREA TODAY. MEANWHILE, HIGH PRESSURE
ACROSS THE SOUTHERN STATES WILL GENERALLY REMAIN IN PLACE THROUGH
SUNDAY. A COOL FRONT WILL GRADUALLY SETTLE SOUTHEASTWARD ACROSS
THE AREA SATURDAY INTO SUNDAY, HOWEVER IT WILL TEND TO STALL
ACROSS THE NORTHERN MID ATLANTIC REGION MONDAY AND TUESDAY. THIS
FRONT MAY THEN LIFT NORTHEASTWARD AS A WARM FRONT WEDNESDAY INTO
THURSDAY.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
NO CHANGES TO HEAT RELATED HEADLINES.

WE HAVE UPDATED HOURLY TEMPS AND DEWPOINTS TO REFLECT A SLIGHTLY
SLOWER WARMING EARLY TODAY IN SOME AREAS DUE TO THE OVERNIGHT AND
EARLY MORNING CLOUDS AND CONVECTIVE ACTIVITY. WE WILL CONTINUE TO
MONITOR TEMPS/DEWPTS THROUGH THE DAY AND MAKE ANY NECESSARY
ADJUSTMENTS, BUT WITH THE LONG LATE JUNE DAYS, WE DO EXPECT
TEMPERATURES TO RISE QUICKLY AND TO NEAR OUR FCST MAX TEMPS. THESE
TEMPS ARE IN LINE WITH THIS MORNINGS NEARBY OBSERVED SOUNDINGS.
ALSO, WE ARE EXPECTING AMPLE SUN TODAY AND LITTLE IN THE WAY OF
CUMULUS DEVELOPMENT AS CONVECTIVE TEMPS ARE RELATIVELY HIGH.

OTHERWISE, THE WRF-NMMB AND GFS INITIALIZATION WERE ABOUT THE
SAME THIS MORNING VS THE 00Z SOUNDING AND LOOKED MUCH BETTER AT
925MB NOW THAT THE CORE OF THE HOT AIR MASS IS FARTHER TO THE EAST
AND A LITTLE HIGHER ABOVE THE SURFACE. THE ECMWF CONTINUES TO
VERIFY 1-3C TOO WARM, MAKE THAT HOT, WITH ITS 12HR 925MB FORECAST
IN THE CENTRAL CONUS.

BASED ON THE GFS AND NAM MOS PERFORMANCE TO OUR WEST, WE WENT
WITH A STAT GUIDANCE COMPROMISE. FOR PHL THE 00Z SAT FCST
1000-850MB GFS FCST THICKNESS PRETTY MUCH MATCHES 100F TO OUR
WEST. BECAUSE OF THE CLOUDINESS DEBRIS EARLY, WE DID SLOW THE RISE
OF TEMPS A BIT THIS MORNING, BUT GIVEN THE DAYS DO NOT GET MUCH
LONGER THAN NOW, WE DO NOT BELIEVE THEY WILL PUT A DENT IN OUR MAX
TEMP POTENTIAL.

DEW POINTS ON THE OTHER HAND ARE MORE OF A CONUNDRUM. THE FLOW IS
FORECAST TO BE NORTHWEST TO WEST AT THE SURFACE, USUALLY A DRYING
DIRECTION. BUT THE DEW POINTS TO OUR WEST ARE HIGHER. THE GFS MODEL
SFC DEW POINT PROGS YESTERDAY AFTN WERE 10F TOO HIGH, APPLYING THE
SAME CORRECTION TODAY, GIVES US MOST AFTERNOON DEW POINTS IN THE
60S, NOT THAT FAR FROM CURRENT STAT GUIDANCE. THUS THE CURRENT
ADVISORIES AND WARNINGS LOOK GOOD.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH 6 AM SATURDAY/...
ANOTHER VERY WARM NIGHT FOR OUR CWA. A WEAK FRONT WILL TRY TO SAG
SOUTH INTO OUR CWA WITH NOT MUCH COOLING EFFECT EXPECTED. THE
MESOSCALE MODELING IS PASSING ANOTHER REMNANT OF A MCS ACROSS
THE SOUTHERN PARTS OF OUR CWA LATE. JUST LIKE TONIGHT, IT WILL AT
THE LEAST BE UNSTABLE ENOUGH ALOFT TO SUPPORT ONGOING CONVECTION, SO
LOW POPS WERE STARTED. FOR MIN TEMPS, A STAT GUIDANCE COMPROMISE WAS
FOLLOWED.

&&

.LONG TERM /SATURDAY THROUGH THURSDAY/...
THE HEAT AND HUMIDITY WILL CONTINUE TO BE IN PLACE DURING THE
WEEKEND AND POSSIBLY INTO MONDAY AS HIGH PRESSURE ALOFT REMAINS
OVER THE SOUTHEAST U.S. TEMPERATURES WILL REMAIN ABOVE NORMAL WITH
WIDESPREAD 90S IN MOST AREAS. SCATTERED SHOWERS/TSTMS DAILY
FAVORING THE AFTERNOON AND EARLY EVENING WITH MOSTLY SLGT CHC OR
LOW CHC POPS. SPC HAS PLACED MUCH OF OUR AREA IN SLGT CHC FOR SVR
ON DAY2 (12Z SAT - 12Z SUN).

UNSETTLED CONDITIONS REMAIN INTO THE MIDDLE OF NEXT WEEK WITH THE
HIGH ALOFT RE-BUILDING BACK ACROSS THE WRN PART OF THE COUNTY AND
A TROUGH DIGGING ACROSS ERN CANADA AND THE NORTHEAST STATES. THIS
WILL BRING AN END TO THE EXCESSIVELY HOT CONDITIONS...WITH
READINGS RETURNING BACK CLOSER TO NORMAL. DAILY SCT SHOWERS/TSTMS
MON-WED IN THE GRIDS ATTM WITH LOW CONFID IN TIMING/PLACEMENT OF
ANY CONVECTION.

&&

.AVIATION /16Z FRIDAY THROUGH TUESDAY/...
THE FOLLOWING DISCUSSION IS FOR KPHL, KPNE, KTTN, KABE, KRDG, KILG,
KMIV, KACY AND SURROUNDING AREAS.

VFR CONDITIONS ARE EXPECTED THROUGH THE TAF PERIOD. IN FACT, AS
HARD AS IT IS TO FATHOM, WE MAY NOT REACH THE CONVECTIVE
TEMPERATURE TODAY, SO HARDLY ANY CUMULUS CLOUDS ARE FORECAST. WEST
WINDS SHOULD AVERAGE AROUND 10 TO 15 KTS AND KEEP THE SEA BREEZE
FRONT EAST OF ALL OUR NJ TERMINALS. FORECAST SOUNDINGS ARE NOT
SHOWING MUCH GUSTINESS, AND WE HAVE AMENDED THE TAFS AROUND 15Z TO
LOWER OR REMOVE GUSTS FOR THIS AFTERNOON.

FOR THIS EVENING, NO SIGNIFICANT CLOUDS ARE EXPECTED OR VSBY
RESTRICTIONS FOR ANY OF OUR TERMINALS. WINDS SHOULD BECOME LIGHTER
AND GENERALLY FROM THE NORTHWEST.

OUTLOOK...
MOSTLY VFR CONDITIONS EXPECTED OVER THE TERMINALS. DAYTIME HZ AND
PATCHY OVERNIGHT FOG MAY BRING SOME LOWER VSBYS AT TIMES. SCT
SHOWERS/TSTMS ARE POSSIBLE DURING (MAINLY) THE AFTERNOON AND EARLY
EVENING. LOWER CIGS/VSBYS DURING TSTMS.

&&

.MARINE...
CONDITIONS ON OUR WATERS ARE EXPECTED TO REMAIN BELOW SMALL CRAFT
CRITERIA THROUGH FRIDAY NIGHT. WINDS WILL PRIMARILY BE SOUTHWESTERLY
TODAY AND GO WEST FOR A WHILE TONIGHT AS THAT WEAK FRONT BACKS INTO
OUR AREA.

OUTLOOK...
SUB-SCA CONDITIONS OVER THE WEEKEND AND INTO THE MIDDLE OF NEXT
WEEK. SEAS ON THE OCEAN WILL BE MOSTLY IN THE 2-4 FT RANGE. SCT
TSTMS WITH LOCALLY GUSTY WINDS AND HIGHER SEAS WILL BE THE
GREATEST HAZARD ON THE WATERS.

&&

.FIRE WEATHER...
LIKE YESTERDAY, MEAN RH(S) ARE EXPECTED TO DROP CLOSE TO 30 PERCENT
THIS AFTERNOON AND ALSO LIKE YESTERDAY, OVERALL WINDS ARE EXPECTED
TO FALL SHORT OF RED FLAG CRITERIA. WE WILL MAKE MENTION IN THE FIRE
WEATHER FORECAST.

&&

.TIDES/COASTAL FLOODING...
GFS ETSS STILL MODELS POTENTIAL MINOR COASTAL FLOOD EPISODES HERE
WITH THE EVENING TIDE CYCLES BEGINNING SUNDAY OR MONDAY AND CONTG
THRU AT LEAST JULY 3 FULL MOON WHEN ASTRO TIDE IS WITHIN .3 FT OF
THE MINOR TIDAL INUNDATION THRESHOLD.

&&

.RIP CURRENTS...
WHILE THE RISK OF DANGEROUS RIP CURRENTS APPEARS LOW FOR THE NEXT
SEVERAL DAYS, THERE SHOULD BE SOME ENHANCEMENT OF THE RISK FOR RIP
CURRENTS. FIRST ASSOCIATED WITH AN INCREASING S SWELL TO 3 FEET
WITH A 8 SECOND PERIOD TODAY THAT CONTINUES INTO SATURDAY...ESPECIALLY
IF THE WIND AT BUOY 009 IS 180 OR 190 DEGREES, AND THEN WITH AN
INCREASINGLY LARGE RATE OF CHANGE IN TIDES AS WE MOVE TOWARD THE
FULL MOON EARLY NEXT WEEK.

&&

.CLIMATE...
TEMPERATURES ARE EXPECTED TO REACH WELL INTO THE 90S FRIDAY THROUGH
SUNDAY. BELOW ARE THE RECORD HIGH TEMPERATURES AND MOST RECENT YEAR
OF OCCURRENCE FOR JUNE 29 THROUGH JULY 1 FOR OUR EIGHT CLIMATE SITES.

        JUNE 29       JUNE 30        JULY 1

PHL   102 - 1934    100 - 1964     102 - 1901

ACY    98 - 1991     98 - 1991      99 - 1968

ILG    98 - 1959     98 - 1964      97 - 1963

ABE    99 - 1934     97 - 1964      97 - 1963

TTN   100 - 1934     98 - 1964      98 - 1945

RDG    99 - 1943     98 - 1964     101 - 1901

GED    99 - 1969    101 - 1959      98 - 1964

MPO    89 - 1944     90 - 1964      88 - 1968

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...HEAT ADVISORY UNTIL 7 PM EDT THIS EVENING FOR PAZ060>062.
     EXCESSIVE HEAT WARNING UNTIL 8 PM EDT SUNDAY FOR PAZ067>071.
NJ...HEAT ADVISORY UNTIL 7 PM EDT THIS EVENING FOR NJZ007>010-012-
     013-016-020>023-027.
     EXCESSIVE HEAT WARNING UNTIL 8 PM EDT SUNDAY FOR NJZ015-
     017>019.
DE...HEAT ADVISORY UNTIL 7 PM EDT THIS EVENING FOR DEZ002-003.
     EXCESSIVE HEAT WARNING UNTIL 8 PM EDT SUNDAY FOR DEZ001.
MD...HEAT ADVISORY UNTIL 7 PM EDT THIS EVENING FOR MDZ008-012-015-
     019-020.
MARINE...NONE.

&&

SYNOPSIS...O'HARA
NEAR TERM...GIGI/KLINE
SHORT TERM...GIGI
LONG TERM...O'HARA
AVIATION...GIGI/KLINE
MARINE...GIGI
FIRE WEATHER...
TIDES/COASTAL FLOODING...GIGI
RIP CURRENTS...DRAG
CLIMATE...KLINE

Hazardous weather outlook, Jun 29, 7:21 AM EST, 3 hours 39 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
821 AM EDT FRI JUN 29 2012

NJZ007>010-012-013-016-020>023-027-PAZ060>062-301230-
WARREN-MORRIS-HUNTERDON-SOMERSET-MIDDLESEX-WESTERN MONMOUTH-SALEM-
OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY-SOUTHEASTERN BURLINGTON-BERKS-
LEHIGH-NORTHAMPTON-
821 AM EDT FRI JUN 29 2012

...HEAT ADVISORY IN EFFECT FROM NOON TODAY TO 7 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW JERSEY...NORTHERN
NEW JERSEY...NORTHWEST NEW JERSEY...SOUTHERN NEW JERSEY AND EAST
CENTRAL PENNSYLVANIA.

.DAY ONE...TODAY AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   HEAT ADVISORY.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THE HEAT CONTINUES SATURDAY AND SUNDAY, HOWEVER THE HUMIDITY MAY
BE JUST LOW ENOUGH IN THE AFTERNOON TO KEEP THE HEAT INDICES
REDUCED.

THE STORM PREDICTION CENTER HAS INDICATED THAT THERE IS A SLIGHT
RISK OF SEVERE THUNDERSTORMS ACROSS THE AREA SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

NJZ001-PAZ054-055-301230-
SUSSEX-CARBON-MONROE-
821 AM EDT FRI JUN 29 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN NEW JERSEY AND
NORTHEAST PENNSYLVANIA.

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED TODAY OR TONIGHT.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THE STORM PREDICTION CENTER HAS INDICATED THAT THERE IS A SLIGHT
RISK OF SEVERE THUNDERSTORMS ACROSS THE AREA SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

DEZ001-NJZ015-017>019-PAZ067>071-301230-
NEW CASTLE-MERCER-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-CHESTER-
MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA-
821 AM EDT FRI JUN 29 2012

...EXCESSIVE HEAT WARNING IN EFFECT FROM NOON TODAY TO 8 PM EDT
SUNDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN DELAWARE...CENTRAL
NEW JERSEY...SOUTHERN NEW JERSEY AND SOUTHEAST PENNSYLVANIA.

.DAY ONE...TODAY AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   EXCESSIVE HEAT WARNING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   EXCESSIVE HEAT WARNING.

THE STORM PREDICTION CENTER HAS INDICATED THAT THERE IS A SLIGHT
RISK OF SEVERE THUNDERSTORMS ACROSS THE AREA SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

DEZ002-003-MDZ008-012-015-019-020-301230-
KENT-INLAND SUSSEX-CECIL-KENT MD-QUEEN ANNES-TALBOT-CAROLINE-
821 AM EDT FRI JUN 29 2012

...HEAT ADVISORY IN EFFECT FROM NOON TODAY TO 7 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL DELAWARE...SOUTHERN
DELAWARE AND NORTHEAST MARYLAND.

.DAY ONE...TODAY AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   HEAT ADVISORY.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THE HEAT CONTINUES SATURDAY AND SUNDAY AND DEPENDING ON THE DEW
POINTS, THE HEAT INDICES COULD APPROACH 105 DEGREES EACH
AFTERNOON.

THE STORM PREDICTION CENTER HAS INDICATED THAT THERE IS A SLIGHT
RISK OF SEVERE THUNDERSTORMS ACROSS THE AREA SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

ANZ430-431-450>455-301230-
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-
821 AM EDT FRI JUN 29 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS AND
DELAWARE BAY WATERS.

.DAY ONE...TODAY AND TONIGHT.

HAZARDOUS WEATHER IS NOT EXPECTED TODAY OR TONIGHT.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THE STORM PREDICTION CENTER HAS INDICATED THAT THERE IS A SLIGHT
RISK OF SEVERE THUNDERSTORMS ACROSS THE AREA SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

DEZ004-NJZ014-024>026-301230-
DELAWARE BEACHES-EASTERN MONMOUTH-ATLANTIC COASTAL CAPE MAY-
COASTAL ATLANTIC-COASTAL OCEAN-
821 AM EDT FRI JUN 29 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHERN DELAWARE...CENTRAL
NEW JERSEY AND SOUTHERN NEW JERSEY.

.DAY ONE...TODAY AND TONIGHT.

THERE IS A CHANCE THAT SEA AND WIND CONDITIONS WILL PRODUCE A
MODERATE RISK OF DANGEROUS RIP CURRENTS ALONG THE NEW JERSEY
COAST TODAY.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THERE IS A CHANCE OF MINOR TIDAL INUNDATION FLOODING NEAR THE
TIME OF THE EVENING HIGH TIDE NEXT MONDAY THROUGH WEDNESDAY
EVENING ALONG BOTH THE DELAWARE AND NEW JERSEY ATLANTIC COASTS.

THE STORM PREDICTION CENTER HAS INDICATED THAT THERE IS A SLIGHT
RISK OF SEVERE THUNDERSTORMS ACROSS THE AREA SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Local storm report, Jun 29, 5:06 AM EST, 5 hours 54 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
606 AM EDT FRI JUN 29 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0430 AM     TSTM WND DMG     ELVERSON                40.16N  75.83W
06/29/2012                   CHESTER            PA   PUBLIC

            LARGE LIMBS DOWN

0436 AM     HAIL             DUBLIN                  40.37N  75.20W
06/29/2012  M0.75 INCH       BUCKS              PA   PUBLIC

0442 AM     HAIL             RISING SUN              39.70N  76.06W
06/29/2012  M0.88 INCH       CECIL              MD   PUBLIC

0450 AM     HAIL             WEST CHESTER            39.96N  75.61W
06/29/2012  M1.00 INCH       CHESTER            PA   PUBLIC

0500 AM     HAIL             BOYERTOWN               40.33N  75.64W
06/29/2012  M0.75 INCH       BERKS              PA   PUBLIC

0500 AM     HAIL             POTTSTOWN               40.25N  75.64W
06/29/2012  M0.88 INCH       MONTGOMERY         PA   PUBLIC

0503 AM     TSTM WND GST     SPRING CITY             40.18N  75.55W
06/29/2012  E60 MPH          CHESTER            PA   NWS EMPLOYEE

0505 AM     TSTM WND DMG     COATESVILLE             39.98N  75.82W
06/29/2012                   CHESTER            PA   POST OFFICE

            LARGE LIMBS DOWN

0506 AM     TSTM WND GST     PHILADELPHIA            39.95N  75.16W
06/29/2012  E50 MPH          PHILADELPHIA       PA   PUBLIC

0515 AM     TSTM WND DMG     NORRISTOWN              40.12N  75.34W
06/29/2012                   MONTGOMERY         PA   PUBLIC

            LARGE LIMBS DOWN

0515 AM     TSTM WND DMG     UPPER PROVIDENCE        39.96N  75.42W
06/29/2012                   DELAWARE           PA   TRAINED SPOTTER

            AT LEAST ONE TREE DOWN.

0520 AM     HAIL             HAVERTOWN               39.98N  75.31W
06/29/2012  M1.00 INCH       DELAWARE           PA   PUBLIC

0530 AM     HAIL             WOODSTOWN               39.65N  75.33W
06/29/2012  M0.88 INCH       SALEM              NJ   PUBLIC

0550 AM     HAIL             CLEMENTON               39.80N  74.99W
06/29/2012  M0.88 INCH       CAMDEN             NJ   PUBLIC

&&

EVENT NUMBER PHI1200249 PHI1200250 PHI1200251 PHI1200252 PHI1200253
PHI1200254 PHI1200248 PHI1200255 PHI1200256 PHI1200257 PHI1200259
PHI1200260 PHI1200258 PHI1200261

TG

Local storm report, Jun 29, 5:26 AM EST, 5 hours 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
626 AM EDT FRI JUN 29 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0515 AM     TSTM WND DMG     EAGLEVILLE              40.16N  75.41W
06/29/2012                   MONTGOMERY         PA   TRAINED SPOTTER

            TREE AND TREE LIMBS TOOK DOWN WIRES.

&&

EVENT NUMBER PHI1200262

TG

Local storm report, Jun 29, 5:34 AM EST, 5 hours 26 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
634 AM EDT FRI JUN 29 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0430 AM     TSTM WND DMG     ELVERSON                40.16N  75.83W
06/29/2012                   CHESTER            PA   PUBLIC

            LARGE LIMBS DOWN

0436 AM     HAIL             DUBLIN                  40.37N  75.20W
06/29/2012  M0.75 INCH       BUCKS              PA   PUBLIC

0442 AM     HAIL             RISING SUN              39.70N  76.06W
06/29/2012  M0.88 INCH       CECIL              MD   PUBLIC

0450 AM     HAIL             WEST CHESTER            39.96N  75.61W
06/29/2012  M1.00 INCH       CHESTER            PA   PUBLIC

0500 AM     HAIL             BOYERTOWN               40.33N  75.64W
06/29/2012  M0.75 INCH       BERKS              PA   PUBLIC

0500 AM     HAIL             POTTSTOWN               40.25N  75.64W
06/29/2012  M0.88 INCH       MONTGOMERY         PA   PUBLIC

0503 AM     TSTM WND GST     SPRING CITY             40.18N  75.55W
06/29/2012  E60 MPH          CHESTER            PA   NWS EMPLOYEE

0505 AM     TSTM WND DMG     COATESVILLE             39.98N  75.82W
06/29/2012                   CHESTER            PA   POST OFFICE

            LARGE LIMBS DOWN

0506 AM     TSTM WND GST     PHILADELPHIA            39.95N  75.16W
06/29/2012  E50 MPH          PHILADELPHIA       PA   PUBLIC

0510 AM     TSTM WND DMG     UPPER DARBY             39.93N  75.27W
06/29/2012                   DELAWARE           PA   BROADCAST MEDIA

            TREES DOWN.

0515 AM     TSTM WND DMG     NORRISTOWN              40.12N  75.34W
06/29/2012                   MONTGOMERY         PA   PUBLIC

            LARGE LIMBS DOWN

0515 AM     TSTM WND DMG     UPPER PROVIDENCE        39.96N  75.42W
06/29/2012                   DELAWARE           PA   TRAINED SPOTTER

            AT LEAST ONE TREE DOWN.

0515 AM     TSTM WND DMG     EAGLEVILLE              40.16N  75.41W
06/29/2012                   MONTGOMERY         PA   TRAINED SPOTTER

            TREE AND TREE LIMBS TOOK DOWN WIRES.

0520 AM     HAIL             HAVERTOWN               39.98N  75.31W
06/29/2012  M1.00 INCH       DELAWARE           PA   PUBLIC

0530 AM     HAIL             WOODSTOWN               39.65N  75.33W
06/29/2012  M0.88 INCH       SALEM              NJ   PUBLIC

0550 AM     HAIL             CLEMENTON               39.80N  74.99W
06/29/2012  M0.88 INCH       CAMDEN             NJ   PUBLIC

0555 AM     TSTM WND DMG     NEW GRETNA              39.59N  74.45W
06/29/2012                   BURLINGTON         NJ   PUBLIC

            TREES DOWN

0605 AM     TSTM WND GST     TUCKERTON               40.40N  75.94W
06/29/2012  M62 MPH          BERKS              PA   WEATHER FLOW

&&

EVENT NUMBER PHI1200249 PHI1200250 PHI1200251 PHI1200252 PHI1200253
PHI1200254 PHI1200248 PHI1200255 PHI1200256 PHI1200265 PHI1200257
PHI1200259 PHI1200262 PHI1200260 PHI1200258 PHI1200261 PHI1200263
PHI1200264

TG

Local storm report, Jun 29, 8:40 AM EST, 2 hours 20 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
940 AM EDT FRI JUN 29 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0430 AM     TSTM WND DMG     ELVERSON                40.16N  75.83W
06/29/2012                   CHESTER            PA   PUBLIC

            LARGE LIMBS DOWN

0436 AM     HAIL             DUBLIN                  40.37N  75.20W
06/29/2012  M0.75 INCH       BUCKS              PA   PUBLIC

0442 AM     HAIL             RISING SUN              39.70N  76.06W
06/29/2012  M0.88 INCH       CECIL              MD   PUBLIC

0450 AM     HAIL             WEST CHESTER            39.96N  75.61W
06/29/2012  M1.00 INCH       CHESTER            PA   PUBLIC

0500 AM     HAIL             BOYERTOWN               40.33N  75.64W
06/29/2012  M0.75 INCH       BERKS              PA   PUBLIC

0500 AM     HAIL             POTTSTOWN               40.25N  75.64W
06/29/2012  M0.88 INCH       MONTGOMERY         PA   PUBLIC

0503 AM     TSTM WND GST     SPRING CITY             40.18N  75.55W
06/29/2012  E60 MPH          CHESTER            PA   NWS EMPLOYEE

0505 AM     TSTM WND DMG     COATESVILLE             39.98N  75.82W
06/29/2012                   CHESTER            PA   POST OFFICE

            LARGE LIMBS DOWN

0506 AM     TSTM WND GST     PHILADELPHIA            39.95N  75.16W
06/29/2012  E50 MPH          PHILADELPHIA       PA   PUBLIC

0510 AM     TSTM WND DMG     UPPER DARBY             39.93N  75.27W
06/29/2012                   DELAWARE           PA   BROADCAST MEDIA

            TREES DOWN.

0510 AM     TSTM WND DMG     PAOLI                   40.04N  75.49W
06/29/2012                   CHESTER            PA   BROADCAST MEDIA

            LARGE LIMBS DOWN IN PAOLI

0510 AM     TSTM WND DMG     SOUTHWEST CENTER CITY   39.94N  75.18W
06/29/2012                   PHILADELPHIA       PA   BROADCAST MEDIA

            POWER POLE SNAPPED AND WIRES DOWN IN SOUTHWEST
            PHILADELPHIA.

0510 AM     TSTM WND DMG     PHILADELPHIA            39.95N  75.16W
06/29/2012                   PHILADELPHIA       PA   NEWSPAPER

            TREE KNOCKED DOWN BLOCKING PART OF THE ROOSEVELT
            BOULEVARD.

0515 AM     TSTM WND DMG     NORRISTOWN              40.12N  75.34W
06/29/2012                   MONTGOMERY         PA   PUBLIC

            LARGE LIMBS DOWN

0515 AM     TSTM WND DMG     UPPER PROVIDENCE        39.96N  75.42W
06/29/2012                   DELAWARE           PA   TRAINED SPOTTER

            AT LEAST ONE TREE DOWN.

0515 AM     TSTM WND DMG     EAGLEVILLE              40.16N  75.41W
06/29/2012                   MONTGOMERY         PA   TRAINED SPOTTER

            TREE AND TREE LIMBS TOOK DOWN WIRES.

0520 AM     HAIL             HAVERTOWN               39.98N  75.31W
06/29/2012  M1.00 INCH       DELAWARE           PA   PUBLIC

0530 AM     HAIL             WOODSTOWN               39.65N  75.33W
06/29/2012  M0.88 INCH       SALEM              NJ   PUBLIC

0530 AM     TSTM WND DMG     FOX CHASE               40.08N  75.08W
06/29/2012                   PHILADELPHIA       PA   BROADCAST MEDIA

            LARGE LIMBS DOWN IN FOX CHASE IN PHILADELPHIA

0535 AM     TSTM WND DMG     FRANKLIN TWP            39.60N  75.03W
06/29/2012                   GLOUCESTER         NJ   TRAINED SPOTTER

            SEVERAL LARGE TREE LIMBS DOWN IN FRANKLIN TOWNSHIP.

0550 AM     HAIL             CLEMENTON               39.80N  74.99W
06/29/2012  M0.88 INCH       CAMDEN             NJ   PUBLIC

0555 AM     TSTM WND DMG     NEW GRETNA              39.59N  74.45W
06/29/2012                   BURLINGTON         NJ   PUBLIC

            TREES DOWN

0610 AM     TSTM WND GST     TUCKERTON               39.60N  74.33W
06/29/2012  M62 MPH          OCEAN              NJ   WEATHER FLOW

0610 AM     HAIL             CAPE MAY                38.94N  74.90W
06/29/2012  M0.75 INCH       CAPE MAY           NJ   PUBLIC

0610 AM     MARINE TSTM WIND BARNEGAT LIGHT          39.76N  74.10W
06/29/2012  M44 MPH          OCEAN              NJ   WEATHER FLOW

            38 KNOT GUST AT BARNEGAT LIGHT.

0615 AM     TSTM WND DMG     TUCKERTON               39.60N  74.33W
06/29/2012                   OCEAN              NJ   PUBLIC

            LARGE LIMBS DOWN IN TUCKERTON

0620 AM     HAIL             CAPE MAY                38.94N  74.90W
06/29/2012  E0.75 INCH       CAPE MAY           NJ   PUBLIC

0620 AM     MARINE TSTM WIND CAPE MAY                38.94N  74.90W
06/29/2012  M44 MPH          CAPE MAY           NJ   WEATHER FLOW

            38 KNOT GUST AT CAPE MAY.

&&

EVENT NUMBER PHI1200249 PHI1200250 PHI1200251 PHI1200252 PHI1200253
PHI1200254 PHI1200248 PHI1200255 PHI1200256 PHI1200265 PHI1200266
PHI1200272 PHI1200273 PHI1200257 PHI1200259 PHI1200262 PHI1200260
PHI1200258 PHI1200267 PHI1200270 PHI1200261 PHI1200263 PHI1200264
PHI1200268 PHI1200274 PHI1200269 PHI1200271 PHI1200275

GORSE

Local storm report, Jun 29, 10:40 AM EST, 20 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1140 AM EDT FRI JUN 29 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0430 AM     TSTM WND DMG     ELVERSON                40.16N  75.83W
06/29/2012                   CHESTER            PA   PUBLIC

            LARGE LIMBS DOWN

0436 AM     HAIL             DUBLIN                  40.37N  75.20W
06/29/2012  M0.75 INCH       BUCKS              PA   PUBLIC

0442 AM     HAIL             RISING SUN              39.70N  76.06W
06/29/2012  M0.88 INCH       CECIL              MD   PUBLIC

0450 AM     HAIL             WEST CHESTER            39.96N  75.61W
06/29/2012  M1.00 INCH       CHESTER            PA   PUBLIC

0500 AM     HAIL             BOYERTOWN               40.33N  75.64W
06/29/2012  M0.75 INCH       BERKS              PA   PUBLIC

0500 AM     HAIL             POTTSTOWN               40.25N  75.64W
06/29/2012  M0.88 INCH       MONTGOMERY         PA   PUBLIC

0500 AM     TSTM WND GST     DREXEL HILL             39.95N  75.30W
06/29/2012  M54 MPH          DELAWARE           PA   TRAINED SPOTTER

            A 54 MPH THUNDERSTORM WIND GUST WAS MEASURED IN DREXEL
            HILL.

0503 AM     TSTM WND GST     SPRING CITY             40.18N  75.55W
06/29/2012  E60 MPH          CHESTER            PA   NWS EMPLOYEE

0505 AM     TSTM WND DMG     COATESVILLE             39.98N  75.82W
06/29/2012                   CHESTER            PA   POST OFFICE

            LARGE LIMBS DOWN

0506 AM     TSTM WND GST     PHILADELPHIA            39.95N  75.16W
06/29/2012  E50 MPH          PHILADELPHIA       PA   PUBLIC

0510 AM     TSTM WND DMG     UPPER DARBY             39.93N  75.27W
06/29/2012                   DELAWARE           PA   BROADCAST MEDIA

            TREES DOWN.

0510 AM     TSTM WND DMG     PAOLI                   40.04N  75.49W
06/29/2012                   CHESTER            PA   BROADCAST MEDIA

            LARGE LIMBS DOWN IN PAOLI

0510 AM     TSTM WND DMG     SOUTHWEST CENTER CITY   39.94N  75.18W
06/29/2012                   PHILADELPHIA       PA   BROADCAST MEDIA

            POWER POLE SNAPPED AND WIRES DOWN IN SOUTHWEST
            PHILADELPHIA.

0510 AM     TSTM WND DMG     PHILADELPHIA            39.95N  75.16W
06/29/2012                   PHILADELPHIA       PA   NEWSPAPER

            TREE KNOCKED DOWN BLOCKING PART OF THE ROOSEVELT
            BOULEVARD.

0515 AM     TSTM WND DMG     NORRISTOWN              40.12N  75.34W
06/29/2012                   MONTGOMERY         PA   PUBLIC

            LARGE LIMBS DOWN

0515 AM     TSTM WND DMG     UPPER PROVIDENCE        39.96N  75.42W
06/29/2012                   DELAWARE           PA   TRAINED SPOTTER

            AT LEAST ONE TREE DOWN.

0515 AM     TSTM WND DMG     EAGLEVILLE              40.16N  75.41W
06/29/2012                   MONTGOMERY         PA   TRAINED SPOTTER

            TREE AND TREE LIMBS TOOK DOWN WIRES.

0515 AM     TSTM WND DMG     STANTON                 39.72N  75.64W
06/29/2012                   NEW CASTLE         DE   NEWSPAPER

            SOME TREE LIMBS AND WIRES DOWN IN AND AROUND STANTON.

0520 AM     HAIL             HAVERTOWN               39.98N  75.31W
06/29/2012  M1.00 INCH       DELAWARE           PA   PUBLIC

0530 AM     HAIL             WOODSTOWN               39.65N  75.33W
06/29/2012  M0.88 INCH       SALEM              NJ   PUBLIC

0530 AM     TSTM WND DMG     FOX CHASE               40.08N  75.08W
06/29/2012                   PHILADELPHIA       PA   BROADCAST MEDIA

            LARGE LIMBS DOWN IN FOX CHASE IN PHILADELPHIA

0535 AM     TSTM WND DMG     FRANKLIN TWP            39.60N  75.03W
06/29/2012                   GLOUCESTER         NJ   TRAINED SPOTTER

            SEVERAL LARGE TREE LIMBS DOWN IN FRANKLIN TOWNSHIP.

0550 AM     HAIL             CLEMENTON               39.80N  74.99W
06/29/2012  M0.88 INCH       CAMDEN             NJ   PUBLIC

0555 AM     TSTM WND DMG     NEW GRETNA              39.59N  74.45W
06/29/2012                   BURLINGTON         NJ   PUBLIC

            TREES DOWN

0610 AM     TSTM WND GST     TUCKERTON               39.60N  74.33W
06/29/2012  M62 MPH          OCEAN              NJ   WEATHER FLOW

0610 AM     HAIL             CAPE MAY                38.94N  74.90W
06/29/2012  M0.75 INCH       CAPE MAY           NJ   PUBLIC

0610 AM     MARINE TSTM WIND BARNEGAT LIGHT          39.76N  74.10W
06/29/2012  M44 MPH          OCEAN              NJ   WEATHER FLOW

            38 KNOT GUST AT BARNEGAT LIGHT.

0615 AM     TSTM WND DMG     TUCKERTON               39.60N  74.33W
06/29/2012                   OCEAN              NJ   PUBLIC

            LARGE LIMBS DOWN IN TUCKERTON

0620 AM     HAIL             CAPE MAY                38.94N  74.90W
06/29/2012  E0.75 INCH       CAPE MAY           NJ   PUBLIC

0620 AM     MARINE TSTM WIND CAPE MAY                38.94N  74.90W
06/29/2012  M44 MPH          CAPE MAY           NJ   WEATHER FLOW

            38 KNOT GUST AT CAPE MAY.

0625 AM     LIGHTNING        SEASIDE HEIGHTS         39.94N  74.08W
06/29/2012                   OCEAN              NJ   COUNTY OFFICIAL

            LIGHTNING STRIKES CAUSED SEVERAL POWER OUTAGES IN THE
            SEASIDE HEIGHTS AREA.

&&

EVENT NUMBER PHI1200249 PHI1200250 PHI1200251 PHI1200252 PHI1200253
PHI1200254 PHI1200276 PHI1200248 PHI1200255 PHI1200256 PHI1200265
PHI1200266 PHI1200272 PHI1200273 PHI1200257 PHI1200259 PHI1200262
PHI1200277 PHI1200260 PHI1200258 PHI1200267 PHI1200270 PHI1200261
PHI1200263 PHI1200264 PHI1200268 PHI1200274 PHI1200269 PHI1200271
PHI1200275 PHI1200278

GORSE

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

3 heat, 1 excessive heat. Local standard time, as filed.

Excessive Heat, New Castle

When: June 29, 11:00 AM EST to 7:00 PM EST
Where: New Castle forecast zone
Reported by: ASOS
Coordinates: 39.578, -75.639 (the zone’s center; the record gives no point)

Heat, Delaware Beaches

When: June 29, 11:00 AM EST to 7:00 PM EST
Where: Delaware Beaches forecast zone
Reported by: Mesonet
Coordinates: 38.683, -75.339 (the zone’s center; the record gives no point)

Heat, Inland Sussex

When: June 29, 11:00 AM EST to 7:00 PM EST
Where: Inland Sussex forecast zone
Reported by: ASOS
Coordinates: 38.683, -75.339 (the zone’s center; the record gives no point)

Heat, Kent

When: June 29, 11:00 AM EST to 7:00 PM EST
Where: Kent forecast zone
Reported by: ASOS
Coordinates: 39.096, -75.505 (the zone’s center; the record gives no point)

What these are

Excessive Heat: Heat at or above the local excessive heat warning criteria, or heat that caused deaths.
Heat: Heat below excessive heat criteria that still caused deaths, injuries or significant impacts.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Delaware in 2012 Every state in 2012 This day in weather history Warnings in Delaware, June 2012

Sources

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: 388337, 388338, 388340, 388341.