A slow moving cold front helped trigger scattered showers and thunderstorns across eastern Pennsylvania during the afternoon and evening of the 14th. The thunderstorms themselves moved slowly and caused flash flooding in the Poconos where radar estimated storm totals reached around 5 inches.
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The episode as NWS PHI wrote it up.
A slow moving cold front helped trigger scattered showers and thunderstorns across eastern Pennsylvania during the afternoon and evening of the 14th. The thunderstorms themselves moved slowly and caused flash flooding in the Poconos where radar estimated storm totals reached around 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 Jun 14, 1:38 PM EST, 52 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 238 PM EDT SAT JUN 14 2008 .SYNOPSIS... A COLD FRONT WILL DROP SOUTHEAST FROM THE GREAT LAKES AND MOVE THROUGH THE REGION LATE TONIGHT FOLLOWED BY WEAK HIGH PRESSURE SUNDAY. ANOTHER COLD FRONT WILL APPROACH FROM THE WEST MONDAY AND THEN MOVE THROUGH THE REGION EARLY TUESDAY. ON WEDNESDAY THROUGH FRIDAY, LOW PRESSURE WILL REMAIN OVER NORTHERN NEW ENGLAND WHILE HIGH PRESSURE REMAINS OVER THE MIDWEST. && .NEAR TERM /UNTIL EARLY SUNDAY MORNING/... A SURGE OF WARM HUMID AIR AHEAD OF A COLD FRONT MOVING IN FROM THE GREAT LAKES REGION WILL ALLOW SHOWERS AND TSTMS TO SPREAD IN FROM THE WEST THIS EVENING. THE SHOWERS AND TSTMS SHOULD CONTINUE TO DEVELOP THIS EVENING IN RESPONSE TO AN UNSTABLE AIRMASS IN PLACE COMBINED WITH DIFLUENCE ALOFT AND AN APPROACHING COLD FRONT. WINDS ALOFT ARE GENERALLY LIGHT, SO THE THREAT OF WIDESPREAD SEVERE IS UNLIKELY. HOWEVER, SOME TSTMS COULD HAVE STRONG GUSTY WINDS, AND TORRENTIAL DOWNPOURS AS WELL AS DANGEROUS LIGHTNING. THE COLD FRONT MOVES THROUGH FROM THE NORTHWEST EARLY SUNDAY MORNING. SCATTERED SHOWERS AND TSTMS REMAIN POSSIBLE UNTIL THE FRONT MOVES THROUGH, THEN DRY AIR SHOULD MOVE IN FROM THE WEST. THERE IS A POSSIBILITY OF SOME SHOWERS LINGERING INTO SUNDAY MORNING OVER THE SOUTHEAST ZONES, EVEN AFTER THE FRONT CROSSES. THIS IS DUE TO THE FACT THAT A SHORT WAVE ALOFT LINGERS BEHIND THE FRONT AND COULD SLOW THE PROGRESSION OF THE DRYING ON SUNDAY. && .SHORT TERM /SUNDAY MORNING THROUGH MONDAY NIGHT/... DURING SUNDAY MORNING, AND CERTAINLY BY AFTERNOON, THE DRY AIR COMES IN FROM THE NORTHWEST ALLOWING SKIES TO BECOME PARTLY SUNNY. TEMPERATURES WILL STILL BE WARM, AS THE 850 TEMPS WILL STILL BE AROUND PLUS 14, BUT HUMIDITY WILL BE LOWER THAN THIS AFTERNOON. SUNDAY NIGHT LOOKS DRY. SKIES SHOULD BE PARTLY CLOUDY AS WE CONTINUE TO HAVE SHORT WAVES MOVE THROUGH ALOFT. ON MONDAY, ANOTHER COLD FRONT WILL APPROACH FROM THE NORTHWEST. WARM AIR WILL REMAIN OVER THE REGION AS A SW FLOW AHEAD OF THE FRONT BRINGS IN SOME MORE MOISTURE FROM THE SOUTHWEST. INITIALLY, THIS WILL CAUSE AN INCREASE IN CLOUDS. BUT BY LATE AFTERNOON, THERE COULD BE ENOUGH INSTABILITY TO GENERATE SCATTERED SHOWERS OR TSTMS. I WENT A BIT BELOW MAV TEMPS FOR HIGHS, DUE TO UNCERTAINTY AS CLOUDS COULD LIMIT HOW WARM WE GET. MONDAY NIGHT AGAIN LOOKS WET WITH THE FRONT MOVING THROUGH FROM THE WEST AND A WEAK AREA OF LOW PRESSURE COULD BE ON THE FRONT. DEPENDING OF IF THE WEATHER INGREDIENTS COME TOGETHER LIKE THE GFS SHOWS, WE COULD HAVE SOME HEAVY RAIN WITH THE FRONT. AGAIN MAV TEMPS WERE GENERALLY USED. && .LONG TERM /TUESDAY THROUGH SATURDAY/... COOL CYCLONIC FLOW ALOFT WILL ALLOW FOR BELOW NORMAL TEMPERATURES OVER THE REGION. A COLD FRONT THAT MOVES THROUGH EARLY TUESDAY MORNING THEN LOW PRESSURE OVER NEW ENGLAND WILL KEEP A WEST TO NORTHWEST FLOW OVER THE REGION WEDNESDAY THROUGH FRIDAY. THE UPPER FLOW SHOULD WEAKEN ENOUGH ON SATURDAY TO ALLOW AN AREA OF HIGH PRESSURE TO FORM OVER THE APPLACHIANS. THE COOL CYCLONIC FLOW ALOFT WILL MEAN THAT SOME SHOWERS ARE POSSIBLE WEDNESDAY AND THURSDAY AFTERNOON IN RESPONSE TO DAYTIME HEATING AND INSTABILITY CAUSED BY THE CYCLONIC FLOW. THIS MIGHT EXTEND INTO FRIDAY, BUT FOR NOW POPS WILL BE KEPT AT 20 PERCENT. ON SATURDAY, HIGH PRESSURE SHOULD PROVIDE DRY WEATHER AND TEMPERATURES THAT ARE A BIT WARMER. && .AVIATION /18Z SATURDAY THROUGH THURSDAY/... IT IS VFR ACROSS THE TAF SITES THIS AFTERNOON AND IT LOOKS LIKE THE EARLIER HAZE/SMOKE HAS MIXED OUT IN MOST AREAS. SHOWERS AND THUNDERSTORMS HAVE DEVELOPED TO THE WEST, AND THESE SHOULD MOVE INTO OUR AREA THIS EVENING AND OVERNIGHT. I HAVE DECIDED TO USE THE VCSH AREA-WIDE OVERNIGHT AND TRY TO TIME TWO PERIODS WHEN THE CHANCES WILL BE GREATER IN TEMPO GROUPS. THERE IS LIMITED CONFIDENCE IN THE TIMING FOR THE TEMPO GROUPS HOWEVER. ONCE THE PERIOD OF SHOWERS END LATE TONIGHT, SOME LIGHT FOG IS EXPECTED, AND WAS RETAINED FROM THE PREVIOUS TAFS. VFR AND A DRYING NW WIND EXPECTED AFTER 14Z OR 15Z SUN. OUTLOOK...FINE WEATHER EXPECTED SUNDAY THROUGH MOST OF MONDAY. ANOTHER LOW PRESSURE SYSTEM AND FRONT WILL BRING LOWER CONDITIONS MONDAY NIGHT AND POSSIBLY INTO TUE MORNING. && .MARINE... CONDITIONS WILL REMAIN SUB-SCA OVER THE WATERS TONIGHT AND THE REST OF THE WEEKEND. WINDS WILL BE GUSTY AND SEAS CHOPPY LOCALLY IN ANY THUNDERSTORM WHICH MAY VISIT THE WATERS TONIGHT, BUT OVERALL CONDITIONS WILL NOT BE THAT BAD. SEAS WILL INCREASE LATER MONDAY INTO MONDAY NIGHT AS THE NEXT LOW AND FRONT APPROACH, BUT OUR PRESENT FORECAST KEEPS CONDITIONS SCA THEN TOO. A BETTER CHANCE FOR SCA CONDITIONS WILL ARRIVE TUE AS THE COOLER AND DRIER AIR ARRIVE. && .PHI WATCHES/WARNINGS/ADVISORIES... PA...NONE. NJ...NONE. DE...NONE. MD...NONE. MARINE...NONE. && SYNOPSIS...STAUBER NEAR TERM...STAUBER SHORT TERM...STAUBER LONG TERM...STAUBER AVIATION...OHARA MARINE...OHARA
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 145 PM EDT SAT JUN 14 2008 DEZ001>004-MDZ008-012-015-019-020-NJZ001-007>010-012>027-PAZ054-055- 060>062-067>071-151745- NEW CASTLE-KENT DE-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD- QUEEN ANNES-TALBOT-CAROLINE-SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET- MIDDLESEX-WESTERN MONMOUTH-EASTERN MONMOUTH-MERCER-SALEM-GLOUCESTER- CAMDEN-NORTHWESTERN BURLINGTON-OCEAN-CUMBERLAND-ATLANTIC-CAPE MAY- ATLANTIC COASTAL CAPE MAY-COASTAL ATLANTIC-COASTAL OCEAN- SOUTHEASTERN BURLINGTON-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON- CHESTER-MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- 145 PM EDT SAT JUN 14 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL DELAWARE...NORTHERN DELAWARE...SOUTHERN DELAWARE...EASTERN MARYLAND...NORTHEAST MARYLAND...CENTRAL NEW JERSEY...NORTHERN NEW JERSEY...SOUTHERN NEW JERSEY...EAST CENTRAL PENNSYLVANIA...NORTHEAST PENNSYLVANIA AND SOUTHEAST PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED THROUGH TONIGHT. SOME THUNDERSORMS MAY CONTAIN GUSTY WINDS HEAVY RAIN AND FREQUENT LIGHTNING. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED. ANZ430-431-450>455-151745- 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- 145 PM EDT SAT JUN 14 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS AND DELAWARE BAY WATERS. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED THROUGH TONIGHT. SOME THUNDERSORMS MAY CONTAIN GUSTY WINDS HEAVY RAIN AND FREQUENT LIGHTNING. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 140 PM EDT SAT JUN 14 2008 NJZ001-007-PAZ055-141945- MONROE-SUSSEX-WARREN- 140 PM EDT SAT JUN 14 2008 ...A STRONG THUNDERSTORM WILL AFFECT EASTERN MONROE...SUSSEX AND NORTHERN WARREN COUNTIES... AT 138 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM ALONG THE MONROE AND PIKE COUNTY BORDER EAST OF MOUNTAINHOME. IT WAS MOVING EAST AT 10 TO 15 MPH. THE THUNDERSTORM WILL BE NEAR FLATBROOKVILLE...MILLBROOK AROUND 230 PM...FIVE POINTS...CRANDON LAKES AROUND 300 PM...BRANCHVILLE...GREENDELL AROUND 315 PM...NEWTON AROUND 330 PM...LAKE MOHAWK AND OGDENSBURG AROUND 345 PM. 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 AROUND 45 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM. THIS WOULD TEAR DOWN SOME WEAK TREE LIMBS. EXPECT INTENSE LIGHTNING FROM THIS STORM. DO NOT SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN A THUNDERSTORM APPROACHES. TFG
The Binghamton radar (KBGM), 134 km away, was scanning. The volume nearest the first event began at 19:29 UTC.
3 flash flood. Local standard time, as filed.
Slow moving thunderstorms with heavy rain caused flash flooding along the smaller streams as well as roadway flooding in northeast Monroe County. Flooded roadways were reported in Middle Smithfield Township. Doppler Radar storm total estimates reached 5 inches in Price Township.
Thunderstorms with torrential downpours caused flooding of smaller streams as well as roadways along the Kidder and Penn Forest Township lines. A few roadways remained closed due to flooding into the evening of the 14th. Doppler Radar storm total estimates reached around 5 inches.
Thunderstorms with torrential downpours caused flooding of smaller streams as well as a few roadways in Polk, Chestnuthill and Hamilton Townships. Flooding also affected U.S. Route 209 in Hamilton Township. Doppler Radar storm total estimates reached 3 inches in Polk Township.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2008Every state in 2008This day in weather historyWarnings in Pennsylvania, June 2008
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: 113322, 113334, 113358.