A series of thunderstorms, preceding a slowing cold front, during the afternoon of the 26th moved across the Poconos. They not only produced severe weather, but also flash flooding in several municipalities across western Carbon and southeast Monroe County.
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 thunderstorms, preceding a slowing cold front, during the afternoon of the 26th moved across the Poconos. They not only produced severe weather, but also flash flooding in several municipalities across western Carbon and southeast Monroe County. Many roadways and basements were flooded and this included at least one road washout. Heavier rainfall amounts were two to three inches per hour and Doppler Radar storm total estimates reached between 6 and 7 inches in Hamilton Township (Monroe County). The highest reported storm total was 7.40 inches in Lansdale in Carbon County.
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 May 26, 11:32 AM EST, 2 hours 8 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1232 PM EDT SAT MAY 26 2012 .SYNOPSIS... HIGH PRESSURE EAST OF THE MID ATLANTIC COAST WILL REMAIN IN PLACE INTO EARLY NEXT WEEK. A WEAK COLD FRONT COULD DROP SOUTH INTO THE AREA LATE TONIGHT AND SUNDAY MORNING BEFORE DISSIPATING. LOW PRESSURE TRACKING WELL NORTH OF THE AREA TUESDAY INTO WEDNESDAY WILL DRAG COLD FRONT THROUGH THE AREA TUESDAY NIGHT AND WEDNESDAY. HIGH PRESSURE WILL BUILD IN BEHIND THE FRONT FOR THE END OF NEXT WEEK. LOW PRESSURE OVER THE OHIO VALLEY COULD AFFECT THE REGION EARLY NEXT WEEKEND. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... AT MIDDAY, A FRONTAL BOUNDARY EXTENDED SOUTHWESTWARD FROM NEW ENGLAND TO NORTHERN PENNSYLVANIA. THE BOUNDARY WILL CONTINUE TO SINK TO THE SOUTH AND IT IS EXPECTED TO STALL ACROSS OUR NORTHERN COUNTIES THIS AFTERNOON. WE WILL CONTINUE TO MENTION SCATTERED SHOWERS AND THUNDERSTORMS FOR THE NORTHERN HALF OF OUR FORECAST AREA FOR THIS AFTERNOON. AT NOON, SURFACE BASED CAPE VALUES WERE ALREADY IN EXCESS OF 3000 J/KG IN PARTS OF THE LEHIGH VALLEY, THE POCONOS AND NORTHWESTERN NEW JERSEY. ANY THUNDERSTORMS THAT DEVELOP WILL BE SLOW MOVING AND THEY COULD LEAVE LOCALIZED HEAVY RAINFALL WITH FLOODING OF ROADWAYS AND IN AREAS OF POOR DRAINAGE. IT WILL BE VERY WARM AND HUMID THIS AFTERNOON, WITH TEMPERATURES RISING WELL INTO THE 80S, EXCEPT IN THE ELEVATED TERRAIN. && .SHORT TERM /6 PM THIS EVENING THROUGH 6 AM SUNDAY/... NO APPRECIABLE CHANGE TONIGHT AS THE MAIN PLAYERS ARE THE AFOREMENTIONED HIGH BUILDING IN ALOFT FROM THE W AND KEEPING THINGS WARM. ANY TSRA SHOULD END AND ITS PSBL THERE COULD BE SOME PATCHY FOG AGAIN IN THE NRMLY SHELTERED LOCATIONS. && .LONG TERM /SUNDAY THROUGH FRIDAY/... 500MB: STRONG RIDGE OHIO VALLEY MONDAY SLOWLY COOLS THROUGH THE WEEK AS TROUGHING EVOLVES E USA VIA SEVERAL SHORT WAVES. TEMPS: MODELED ABOVE NORMAL EVERY DAY THROUGH AT LEAST THURSDAY AND THEREAFTER ONLY COOL TO NEAR NORMAL FOR FRIDAY OR SATURDAY. PLS SEE CLIMATE SECTION REGARDING MONTHLY AVG. EXCESSIVE HEAT POTENTIAL FOR MONDAY/TUESDAY...91/72 OFFERS A MAX HI OF 99. I DONT THINK WE WILL EXCEED THAT VALUE WHICH IS ALSO BASICALLY WHAT THE HPC DAILY MAX HI PREDICTS. HPC PREDICTORS OFFER A 40 PCT CHC OF EXCEED HI OF 95 ON TUE AND MAINLY DE/MD. WE'LL LOOK AT OTHER PREDICTORS TO DETERMINE EVENTUAL EARLY SEASON ADVY VS WATCH-WARNING PROCESS. SO THE MAIN PROBLEMS FOR THIS PERIOD INCLUDE THE POTENTIAL FOR EXCESSIVE HEAT MONDAY AND TUESDAY FOR HIGHLY URBANIZED AREAS...AS WELL AS AFTERNOON AND EVENING THUNDERSTORMS SUNDAY INTO AT LEAST TUESDAY. SUNDAY LOOKS LIKE A REPEAT OF THE LAST FEW DAYS...WITH THE BEST CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON AND EARLY EVENING. THE BEST THREAT LOOKS TO BE WEST OF THE DELAWARE RIVER (AS WELL AS NORTHWEST NEW JERSEY)...AS THE ELEVATION ACTS AS A FOCUS. HOWEVER... OUTFLOW BOUNDARIES IN A LOW SHEAR ENVIRONMENT COULD MEAN ISOLATED TO SCATTERED SHOWERS OVER A LARGER AREA. AS HAS BEEN THE CASE THE LAST COUPLE OF DAYS...SLOW STEERING WINDS AND HIGH PRECIPITABLE WATER VALUES COULD RESULT IN LOCALLY HEAVY RAIN. THE COVERAGE DOES NOT APPEAR TO SUPPORT ANY TYPE OF FLASH FLOOD HEADLINES. FOR THE MOST PART...TRIED TO KEEP EASTERN SECTIONS SHOWER FREE. LOOKS LIKE THE BACK DOOR FRONT DROPS THROUGH ROUGHLY THE NORTHERN THIRD OF THE AREA. THIS WILL HAVE THE EFFECT OF COOLING AND DRYING NORTHERN ZONES...WHICH MAY HAVE IN TURN CUT DOWN ON THE CONVECTION THREAT THERE. MOS AND MODEL SOUNDINGS DO NOT SHOW EXTENSIVE MOISTURE BECOMING TRAPPED UNDER THE INVERSION BEHIND THE FRONT...SO PARTLY TO MOSTLY SUNNY SKIES SHOULD BE OK. FOR THE MOST PART...A BLEND OF MOS NUMBERS WAS USED FOR HIGHS. ANY ISOLATED TO SCATTERED CONVECTION SHOULD DISSIPATE IN THE EARLY EVENING AS DAYTIME HEATING IS LOST. MODEL SOUNDINGS AND MOS SUGGEST THAT THE STRATUS/FOG PROBLEM COULD BECOME MUCH MORE WIDESPREAD SUNDAY NIGHT INTO MONDAY MORNING. THIS IS DUE TO MOISTURE BECOMING TRAPPED UNDER THE LOW INVERSION. STRATIFYING THE LOWER LEVELS COULD HELP PUSH LOWS CLOSER TO THE SLIGHTLY COOLER GFS MOS NUMBERS FOR LOWS. THE EXTENT OF THE LOW CLOUDS AND FOG MONDAY COULD END UP HAVING A FAIRLY PROFOUND EFFECT ON HIGH TEMPERATURES MONDAY...AND LESSENS THE CONFIDENCE IN POTENTIAL HEAT HEADLINES FOR MONDAY. MODEL SOUNDINGS AND THE GFS MOS SUGGEST THAT THE LOW CLOUDS AND FOG COULD HANG ON INTO THE LATE MORNING HOURS. THIS WOULD SLOW THE LOW LEVEL WARMING PROCESS. THE GFS IS A FEW DEGREES COOLER FOR HIGHS MONDAY. RIGHT NOW...WILL NOT GO QUITE AS COOL AS THE GFS MOS NUMBERS FOR HIGHS MONDAY...BUT HIGHS WERE SHAVED A BIT FOR THE HIGHLY URBANIZED AREAS. THE COMBINATION OF TEMPERATURES AND DEW POINTS KEEP THE APPARENT TEMPERATURES BELOW 96 DEGREES (THE EARLY SEASON BENCHMARK FOR HEAT HEADLINES IN THE HIGHLY URBANIZED AREAS). SINCE THERE IS SOME PLAY HERE...THE POTENTIAL FOR HEAT WILL BE LEFT IN THE HAZARDOUS WEATHER OUTLOOK FOR NOW. THE COVERAGE OF CONVECTION COULD BE A BIT LESS MONDAY AFTERNOON AND EVENING...AS MOST SHORT TERM MODELS SHOW LITTLE IN THE WAY OF PRECIPITATION DURING THIS PERIOD. A LACK OF FOCUS FOR CONVECTION SHOULD BE THE LIMITING FACTOR...THOUGH THE TERRAIN COULD ACT AS A LOCAL FOCUS. MODIFIED MODEL SOUNDINGS SHOW PLENTY OF CONVECTIVE POTENTIAL SHOULD CONVECTION DEVELOP. WHILE THE BULK SHEAR REMAINS WEAK...HIGH PRECIPITABLE WATER COULD RESULT IN A LOCAL WET MICROBURST THREAT. ADDITIONALLY...DRY MID LEVELS AND STEEP MID LEVEL LAPSE RATES (GENERALLY GREATER THAN 7 DEGREES CELSIUS/KM) SUGGEST AN ISOLATED LARGE HAIL THREAT. SINCE COVERAGE IS A QUESTION...THE POTENTIAL WILL NOT BE RATCHETED UP YET. ANY CONVECTION SHOULD DISSIPATE MONDAY EVENING WITH THE LOSS OF HEATING. MODEL SOUNDINGS SUGGEST THAT STRATUS MAY BECOME AN ISSUE MONDAY NIGHT (BUT PERHAPS NOT THE FOG). THE AIR MASS WILL HAVE WARMED FROM WITHIN...SO LOWS PROBABLY REMAIN ABOVE 70 DEGREES AWAY FROM THE INFLUENCE OF THE WATER AND THE TERRAIN. MID LEVEL HEIGHTS BEGIN TO FALL AS NORTHERN STREAM SHORT WAVES START KNOCKING DOWN THE FLAT RIDGE. THE MAIN SHORT WAVE OVER THE NORTHERN GREAT LAKES WILL SEND A COLD FRONT TOWARD THE REGION IN THE AFTERNOON AND EVENING. THEM MID LEVEL SUPPORT LAGS THE FRONT..SO THE FRONT PROBABLY SLOWS AS IT APPROACHES. THE OVERALL INSTABILITY LOOKS TO BE LESS TUESDAY AFTERNOON/EVENING ACROSS THE AREA (WITH THE BEST INSTABILITY WEST OF THE DELAWARE RIVER). HOWEVER...THE LOW LEVEL CONVERGENCE...COMBINED WITH A FOCUS IN THE FORM OF THE FRONT...SHOULD RESULT IN MORE IN THE WAY OF COVERAGE OF SHOWERS AND THUNDERSTORMS TUESDAY AFTERNOON AND EVENING.PRECIPITABLE WATER VALUES REMAIN NEAR 1.50 INCHES...SO LOCALLY HEAVY RAINFALL LOOKS LIKE A THREAT. HIGHS TUESDAY SHOULD BE CLOSE TO THOSE OF MONDAY...WITH SOME STRATUS AND FOG IN THE MORNING. ONCE AGAIN...THE COMBINATION OF TEMPERATURES AND DEW POINTS PUSH THE APPARENT TEMPERATURES CLOSE TO THE EARLY SEASON HEAT BENCHMARK. THIS POTENTIAL WILL BE INCLUDED IN THE HAZARDOUS WEATHER OUTLOOK. PERHAPS THE BEST CHANCE OF MEASURABLE RAIN ACROSS THE FORECAST AREA COMES TUESDAY NIGHT. THE FRONT SHOULD ACT AS A FOCUS FOR THE MOISTURE AND IN SITU INSTABILITY. HIGH PRECIPITABLE WATER VALUES SUGGEST A HEAVY RAIN THREAT FOR TUESDAY EVENING...WITH COLUMN MOISTURE DECREASING DURING THE NIGHT. THE FRONT CROSSES THE REGION WEDNESDAY MORNING. THE LOW LEVEL MOISTURE PROBABLY GETS SCOURED TUESDAY NIGHT AHEAD OF THE FRONT...AND INSTABILITY WITH THE FRONT LOOKS MARGINAL. A MENTION OF THUNDER WAS RETAINED FOR THE FRONTAL PASSAGE WEDNESDAY MORNING. THE AIR MASS IS IN TRANSITION...BUT THE HEAT AND HUMIDITY SHOULD BE LESS WEDNESDAY AFTERNOON THAN MONDAY AND TUESDAY AFTERNOONS. MID RANGE MODELS ARE HINTING THAT THE REMNANTS OF BERYL COULD PASS SOUTHEAST OF THE AREA THURSDAY. THERE IS OBVIOUSLY A LOT OF PLAY IN THIS SOLUTION...AND FOR NOW THIS POTENTIAL WAS NOT INCLUDED IN THE FORECAST. DUE TO UNCERTAINTY CONCERNING HOW THE CLOSED MID LEVEL SYSTEM OVER THE OHIO VALLEY PLAYS OUT FOR NEXT WEEKEND...NOT MUCH CHANGE TO THE FORECAST WAS MADE AFTER THURSDAY AFTERNOON. && .AVIATION /18Z SATURDAY THROUGH THURSDAY/... THE FOLLOWING DISCUSSION IS FOR KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY AND SURROUNDING AREAS. SCATTERED CUMULUS ARE ANTICIPATED FOR THIS AFTERNOON ALONG WITH A SOUTH TO SOUTHWEST WIND AROUND 6 TO 10 KNOTS. A FRONTAL BOUNDARY FROM THE NORTH IS FORECAST TO DROP INTO NORTHEASTERN PENNSYLVANIA AND NORTHERN NEW JERSEY DURING THE AFTERNOON. THE BOUNDARY WILL TRIGGER SCATTERED SHOWERS AND THUNDERSTORMS FOR THIS AFTERNOON AND EVENING, MAINLY AROUND KRDG, KABE AND KTTN. HOWEVER, THE FORECAST CONFIDENCE REGARDING THE DEVELOPMENT AND TIMING OF ANY SHOWERS AND THUNDERSTORMS REMAINS LOW, SO THEY WILL NOT BE INCLUDED IN THE TAFS AT THIS TIME BUT THEY MAY BE ADDED, ESPECIALLY AT KABE. WITH LINGERING LOW LEVEL MOISTURE, SOME LOW CLOUDS AND VISIBILITY RESTRICTIONS MAY DEVELOP AGAIN FOR LATE TONIGHT AND EARLY SUNDAY MORNING. OUTLOOK... SUNDAY...VFR CONDITIONS ARE EXPECTED. SCATTERED SHOWERS AND THUNDERSTORMS SHOULD AFFECT NORTHERN AREAS...WITH A LOW CHANCE OF MVFR CONDITIONS INTO EARLY EVENING. SUNDAY NIGHT...VFR CONDITIONS IN THE EVENING WILL DROP TO MVFR AND EVENTUALLY IFR IN CLOUDS AND FOG. THERE IS A LOW CHANCE OF WIDESPREAD LIFR CONDITIONS IN FOG. MONDAY...IFR CONDITIONS IN THE MORNING SHOULD GIVE WAY TO VFR CONDITIONS BY LATE MORNING. SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED MONDAY AFTERNOON AND EVENING. SW G15 KT IN THE AFTN. TUESDAY...IFR CONDITIONS IN MORNING FOG AND STRATUS SHOULD GIVE WAY TO VFR CONDITIONS BY LATE MORNING. SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED IN THE AFTERNOON AND EVENING. SW G 15 KT IN THE AFTN. WEDNESDAY...MAINLY VFR CONDITIONS ARE EXPECTED. && .MARINE... WITH HIGH PRESSURE BUILDING INTO THE AREA, WE ARE EXPECTING SUB- ADVISORY CRITERIA THROUGH THE NEAR AND SHORT TERM PERIODS, WITH WIND SPEEDS GENLY UNDER 15 KT. THERE COULD BE SOME AFTN OR EVE TSTMS THAT WOULD INCREASE SEAS OR WINDS BUT THE AREAL COVERAGE AND DURATION IS EXPECTED TO BE SMALL. OUTLOOK... A BACK DOOR FRONT MAY DROP INTO THE NORTHERN WATERS SUNDAY MORNING...BEFORE DISSIPATING. THE NET EFFECT OF THE FRONTAL PASSAGE WOULD BE TO BACK WINDS ACROSS NORTHERN WATERS TO THE EAST. ACROSS THE SOUTH...SEA AND BAY BREEZES ARE EXPECTED. OVER ALL AREAS...WINDS AND SEAS ARE EXPECTED TO REMAIN BELOW SMALL CRAFT LEVELS. THE SOUTHERLY FLOW SHOULD INCREASE SUNDAY EVENING (AS IT TYPICAL THIS TIME OF YEAR)...BEFORE BACKING OFF TOWARD DAYBREAK MONDAY. WINDS SHOULD REMAIN BELOW 15 KNOTS. PERHAPS THE MAIN FORECAST PROBLEM SUNDAY NIGHT COULD BE THE FOG. STATISTICAL GUIDANCE SUGGESTS THAT THE FOG COULD BE DENSE LATE SUNDAY NIGHT AND MONDAY MORNING. FOG COULD REMAIN A PROBLEM IN THE MORNING...AND IT IS POSSIBLE THAT THE FOG NEVER REALLY EXITS THE WATERS DURING THE DAY. THE PRESSURE GRADIENT INCREASES IN THE AFTERNOON AS THE SURFACE HIGH TO THE EAST REPOSITIONS ITSELF.AT THIS POINT...IT APPEARS AS THOUGH WINDS SHOULD REMAIN BELOW SMALL CRAFT LEVELS MONDAY AND MONDAY NIGHT. GUSTS TO 20 KNOTS ARE POSSIBLE MONDAY AFTERNOON AND EVENING ACROSS THE SOUTHERN OCEAN WATERS (AND LOWER DELAWARE BAY). THE GRADIENT TUESDAY INTO TUESDAY EVENING LOOKS BORDERLINE TO SUPPORT SMALL CRAFT WINDS. MIXING WILL NOT HELP...AS WARMER AIR OVER THE COOLER WASTER LIMITS THE AMOUNT OF MOMENTUM THAT CAN REACH THE SURFACE. THE BEST GUSTS TUESDAY INTO TUESDAY EVENING SHOULD BE ON THE NEAR SHORE WATERS OF THE OCEAN AND ACROSS DELAWARE BAY. THE PERSISTENT SOUTH TO SOUTHWEST FLOW COULD ALLOW SEAS TO REACH 5 FEET TUESDAY NIGHT AND WEDNESDAY...ESPECIALLY ACROSS THE NORTHERN OCEAN WATERS. WINDS ARE EXPECTED TO REMAIN BELOW SMALL CRAFT LIMITS LATER TUESDAY EVENING INTO WEDNESDAY. && .CLIMATE... MONTHLY CLI. KPHL IS ON TRACK FOR ITS 7TH CONSECUTIVE MONTH OF WELL ABV NORMAL TEMPS. OCTOBER WAS THE MOST RECENT MONTH OF NEAR NORMAL WHICH I CONSIDER TO BE WITHIN 0.5F OF NORM. NOV 3.7 DEC 5.8 JAN 4.9 FEB 5.2 MAR 8.7 APR 1.5 MAY...IS PROJECTING /BASED ON MIDNIGHT SHIFT GRIDDED FCST/ PLUS 4.4F OR EQUIVALENT TO 68.2F WHICH WOULD RANK TOP 5 WARMEST... WELL BELOW THE RECORD 70.8 IN 1991, AND THE 69.2 IN 2004. POR DATES BACK TO 1874 KABE IS ON TRACK FOR 2ND WARMEST MAY. SEP 3.4 OCT 1.3 NOV 3.9 DEC 6.1 JAN 5.5 FEB 5.9 MAR 10.7 APR 1.3 MAY...IS PROJECTING /BASED ON MIDNIGHT SHIFT GRIDDED FCST/ PLUS 5.6F OR EQUIVALENT TO 66.2F WHICH WOULD RANK 2ND WARMEST BEHIND THE 67.2 OF 1991, AND JUST AHEAD OF THE 66.0 IN 1944 AND 65.9 IN 2004. POR DATES BACK TO 1922 && .EQUIPMENT... NWS PHONE SYSTEM AND NWR VIP HAVE BEEN FIXED. && .PHI WATCHES/WARNINGS/ADVISORIES... PA...NONE. NJ...NONE. DE...NONE. MD...NONE. MARINE...NONE. && SYNOPSIS...GORSE/HAYES NEAR TERM...IOVINO SHORT TERM...NIERENBERG LONG TERM...DRAG/HAYES AVIATION...IOVINO/HAYES MARINE...HAYES/NIERENBERG CLIMATE...DRAG EQUIPMENT...DRAG
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 942 AM EDT SAT MAY 26 2012 DEZ001-NJZ015-017>019-PAZ067>071-271345- NEW CASTLE-MERCER-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-CHESTER- MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- 942 AM EDT SAT MAY 26 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN DELAWARE...CENTRAL NEW JERSEY...SOUTHERN NEW JERSEY AND SOUTHEAST PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT. THE COMBINATION OF HIGH TEMPERATURES WELL INTO THE 80S TO NEAR 90 DEGREES AND A HUMID AIR MASS MAY PRODUCE HEAT INDEX VALUES AROUND 95 DEGREES IN THE URBAN AREAS THIS AFTERNOON. LOW TEMPERATURES MAY NOT DROP BELOW 70 DEGREES IN THE URBAN CENTERS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. THE COMBINATION OF HIGH TEMPERATURES WELL INTO THE 80S TO NEAR 90 DEGREES AND A HUMID AIR MASS MAY PRODUCE HEAT INDEX VALUES AROUND 95 DEGREES IN THE URBAN AREAS DURING THE AFTERNOONS OF SUNDAY THROUGH TUESDAY. MONDAY AND TUESDAY MAY BE THE HOTTER DAYS. IN ADDITION... LOW TEMPERATURES MAY NOT DROP BELOW 70 DEGREES IN THE URBAN CENTERS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. NJZ001-007>010-PAZ054-055-062-271345- SUSSEX-WARREN-MORRIS-HUNTERDON-SOMERSET-CARBON-MONROE-NORTHAMPTON- 942 AM EDT SAT MAY 26 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN NEW JERSEY...NORTHWEST NEW JERSEY...EAST CENTRAL PENNSYLVANIA AND NORTHEAST PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT. SCATTERED TO ISOLATED THUNDERSTORMS THIS AFTERNOON AND EVENING MAY PRODUCE LOCALLY HEAVY RAINFALL WITH POSSIBLE FLOODING OF ROADWAYS AND AREAS OF POOR DRAINAGE. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. WIDESPREAD HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. DEZ002>004-MDZ008-012-015-019-020-NJZ012>014-016-020>027-PAZ060-061- 271345- KENT-INLAND SUSSEX-DELAWARE BEACHES-CECIL-KENT MD-QUEEN ANNES-TALBOT- CAROLINE-MIDDLESEX-WESTERN MONMOUTH-EASTERN MONMOUTH-SALEM-OCEAN- CUMBERLAND-ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY- COASTAL ATLANTIC-COASTAL OCEAN-SOUTHEASTERN BURLINGTON-BERKS-LEHIGH- 942 AM EDT SAT MAY 26 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL DELAWARE...SOUTHERN DELAWARE...NORTHEAST MARYLAND...CENTRAL NEW JERSEY...NORTHERN NEW JERSEY...SOUTHERN NEW JERSEY AND EAST CENTRAL PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. WIDESPREAD HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. ANZ430-431-450>455-271345- 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- 942 AM EDT SAT MAY 26 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS AND DELAWARE BAY WATERS. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
208 PM EDT SAT MAY 26 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0206 PM HAIL DELAWARE WATER GAP 40.98N 75.14W
05/26/2012 E0.75 INCH MONROE PA TRAINED SPOTTER
&&
EVENT NUMBER PHI1200077
WDPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
220 PM EDT SAT MAY 26 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0206 PM HAIL EAST STROUDSBURG 41.00N 75.18W
05/26/2012 E1.25 INCH MONROE PA PUBLIC
&&
EVENT NUMBER PHI1200078
WDPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
224 PM EDT SAT MAY 26 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0200 PM HAIL EAST STROUDSBURG 41.00N 75.18W
05/26/2012 E0.88 INCH MONROE PA PUBLIC
&&
EVENT NUMBER PHI1200079
WDPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
226 PM EDT SAT MAY 26 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0210 PM HAIL SUSSEX 41.21N 74.61W
05/26/2012 E0.75 INCH SUSSEX NJ PUBLIC
&&
EVENT NUMBER PHI1200080
WDSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
228 PM EDT SAT MAY 26 2012
NJZ001-008-261930-
MORRIS NJ-SUSSEX NJ-
228 PM EDT SAT MAY 26 2012
...STRONG THUNDERSTORMS WILL AFFECT WESTERN MORRIS AND SUSSEX
COUNTIES...
AT 225 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 8 MILES WEST OF
NEWTON TO 2 MILES SOUTHEAST OF NEWTON TO 14 MILES EAST OF
NEWTON...MOVING SOUTHEAST AT 15 MPH.
LOCAL WIND GUSTS TO 35 MPH AND HALF INCH DIAMETER HAIL ARE
POSSIBLE WITH THESE STORMS.
CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. DO NOT
SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS, MOVE INDOORS WHEN
A THUNDERSTORM APPROACHES.
LAT...LON 4121 7437 4119 7437 4109 7449 4105 7449
4106 7445 4102 7439 4087 7472 4111 7497
4115 7492 4115 7481 4121 7446 4121 7438
FORECASTER: GORSEPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
229 PM EDT SAT MAY 26 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0216 PM HAIL EAST STROUDSBURG 41.00N 75.18W
05/26/2012 E1.00 INCH MONROE PA PUBLIC
&&
EVENT NUMBER PHI1200081
WDThe Philadelphia radar (KDIX), 136 km away, was scanning. The volume nearest the first event began at 18:39 UTC.
5 flash flood. Local standard time, as filed.
Thunderstorms with torrential downpours caused poor drainage as well as small creek flash flooding in and around East Stroudsburg. Doppler Radar storm total estimates reached around 4.5 inches.
Thunderstorms with torrential downpours caused flash flooding of smaller streams as well as poor drainage flooding in Nesquehoning Borough. The Wash Shanty Hill portion of U.S. Route 209 was closed because of significant water and debris runoff. Doppler Radar storm total estimates reached around 4 inches.
Thunderstorms with torrential downpours hit Hamilton Township the hardest in Monroe County as Doppler Radar storm total estimates reached between 6 and 7 inches during the afternoon of the 26th. Multiple roadways were flooded and included Pennsylvania State Route 33 between Syndersville and Interstate 80. The roadway was closed for nearly two hours and reopened at 620 p.m. EDT that evening. Beaver Valley Road between Turkey Hill Road and Haney Road was closed because it was undermined by a flooding creek. The combination of damaging winds, flooding rains and lightning caused about 2.000 Pennsylvania Power and Light and Metropolitan Edison customers to lose power. The Pocono Creek near Brislin Road in Stroud Township crested at 10.99 feet. There is no established flood stage for the creek at that site. An event total of 3.23 inches was measured in Syndersville in Hamilton Township.
Thunderstorms with torrential downpours caused flash flooding of smaller streams as well as extensive poor drainage flooding in Lansford and Summit Hill Boroughs and the northwest part of Mahoning Township. Roadways were closed and many basements were flooded. In Summit Hill, Pennsylvania State Route 902 was shut down for two and a half hours because of debris and rocks pushed onto the roadway. A portion of Oak Street was also closed. Firefighters responded to thirty-six calls of flooded basements. The annual Stay At Home Festival never opened because volunteers had to rebuild the stands and the field was swamped by flood waters. In Lansford, there was four feet of water on U.S. Route 209 and one motorist had to be rescued. Other roadways in the borough were damaged by flooding as asphalt was washed away. A storm total measurement of 7.40 inches was measured in Lansford.
Thunderstorms with torrential downpours caused flash flooding of smaller streams in Pocono Township. Doppler Radar storm total estimates reached two inches within 45 minutes within the township.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2012Every state in 2012This day in weather historyWarnings in Pennsylvania, May 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: 383449, 383481, 383458, 383479, 383465.