Alert archive / Pennsylvania / Flash Flood Warnings in 2012
Flash Flood Warning 6, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at May 26, 2012, 5:33 PM EDT for Monroe County, Pennsylvania. It was in force for 114 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 26, 2012, 5:33 PM EDT (21:33 UTC)
- Expired
- May 26, 2012, 7:27 PM EDT
- In force
- 114 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
County Monroe County, PA
The radar
The Binghamton radar (KBGM), 140 km from the middle of the area, began a volume at 21:34 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 9.6 hours before the alert went out and 194 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 144 J/kg
- Mixed-layer CIN
- -138 J/kg
- Mixed-layer LCL
- 659 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
452
WGUS51 KPHI 262133
FFWPHI
PAC089-270130-
/O.NEW.KPHI.FF.W.0006.120526T2133Z-120527T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
533 PM EDT SAT MAY 26 2012
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLASH FLOOD WARNING FOR...
MONROE COUNTY...
* UNTIL 930 PM EDT...
* AT 522 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM A THUNDERSTORM OVER MONROE COUNTY.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DELAWARE
WATER GAP...MOUNT POCONO...MOUNTAINHOME...POCONO PINES...ALPINE
MOUNTAIN...ANALOMINK...CANADENSIS...ECHO LAKE...HERNYVILLE...LONG
POND...PARADISE VALLEY...REEDERS...SCOTRUN...SKYTOP AND TOBYHANNA.
TWO TO THREE INCHES HAS FALLEN ACROSS MUCH OF THE COUNTY THIS
AFTERNOON AND AN ADDITIONAL ONE TO TWO INCHES IS POSSIBLE THROUGH
THIS EVENING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW INCHES OF
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.
PLEASE REPORT FLOODING...HAIL OR WIND DAMAGE TO THE NATIONAL WEATHER
SERVICE BY CALLING TOLL FREE...1-877-633-6772.
&&
LAT...LON 4124 7513 4116 7516 4115 7509 4109 7503
4110 7499 4107 7497 4101 7507 4100 7511
4097 7514 4098 7514 4107 7514 4093 7540
4113 7554 4125 7533 4126 7514
$$
ROBERTSON2 follow-up statements
983
WGUS71 KPHI 262256
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
656 PM EDT SAT MAY 26 2012
PAC089-270130-
/O.CON.KPHI.FF.W.0006.000000T0000Z-120527T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONROE PA-
656 PM EDT SAT MAY 26 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM EDT FOR
CENTRAL MONROE COUNTY...
WHILE THE HEAVIEST RAIN HAS ENDED...THERE MAY BE ADDITIONAL RAINFALL
LATER THIS EVENING.
SMALLER CREEKS AND STREAMS CONTINUE TO RISE...ALTHOUGH NONE HAVE
REPORTEDLY OVERFLOWED THEIR BANKS TO OUR KNOWLEDGE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW INCHES OF
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.
PLEASE REPORT FLOODING...HAIL OR WIND DAMAGE BY CALLING YOUR LOCAL
LAW ENFORCEMENT OFFICIALS OR BY CALLING THE NATIONAL WEATHER SERVICE
TOLL FREE AT...1-877-633-6772.
&&
LAT...LON 4116 7519 4112 7509 4101 7509 4099 7514
4106 7515 4093 7540 4094 7541 4107 7547
4109 7547 4111 7543 4118 7530
$$
ROBERTSON145
WGUS71 KPHI 262327
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
727 PM EDT SAT MAY 26 2012
PAC089-262336-
/O.CAN.KPHI.FF.W.0006.000000T0000Z-120527T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONROE PA-
727 PM EDT SAT MAY 26 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR CENTRAL MONROE
COUNTY...
THE HEAVIEST RAIN HAS ENDED FOR THIS EVENING. SOME SMALLER CREEKS
AND STREAMS MAY CONTINUE TO RISE...BUT SHOULD BEGIN RECEDING OVER
THE NEXT COUPLE OF HOURS.
MORE HEAVY RAINFALL IS POSSIBLE ON SUNDAY WHICH COULD CAUSE
ADDITIONAL FLOODING.
LAT...LON 4116 7519 4112 7509 4101 7509 4099 7514
4106 7515 4093 7540 4094 7541 4107 7547
4109 7547 4111 7543 4118 7530
$$
ROBERTSONThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 2:02 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 58 min |
| May 26, 2:18 PM EDT | Areal Flood Advisory | PHI | Monroe, Northampton | 5 hr |
| May 26, 2:23 PM EDT | Areal Flood Advisory | PHI | Carbon | 3 hr |
| May 26, 2:36 PM EDT | Flash Flood Warning | PHI | Monroe, Northampton | 5 hr |
| May 26, 2:42 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 48 min |
| May 26, 2:46 PM EDT | Special Weather Statement | PHI | Carbon | 44 min |
| May 26, 3:15 PM EDT | Areal Flood Advisory | PHI | Carbon | 2 hr |
| May 26, 3:32 PM EDT | Flash Flood Warning | PHI | Monroe, Northampton | 4 hr |
| May 26, 3:39 PM EDT | Special Weather Statement | PHI | Monroe | 51 min |
| May 26, 3:40 PM EDT | Excessive Heat Watch | PHI | Delaware, Philadelphia | 23 hr |
| May 26, 3:45 PM EDT | Areal Flood Advisory | PHI | Carbon | 3 hr |
| May 26, 3:48 PM EDT | Areal Flood Advisory | PHI | Monroe | 3 hr |
| May 26, 3:51 PM EDT | Special Weather Statement | PHI | Carbon | 39 min |
| May 26, 3:54 PM EDT | Flash Flood Warning | PHI | Carbon | 4 hr |
| May 26, 4:31 PM EDT | Areal Flood Advisory | PHI | Carbon, Monroe, Northampton | 3 hr |
| May 26, 4:37 PM EDT | Special Weather Statement | PHI | Carbon, Monroe | 38 min |
| May 26, 4:54 PM EDT | Special Weather Statement | PHI | Northampton | 51 min |
| May 26, 5:26 PM EDT | Special Weather Statement | PHI | Bucks | 49 min |
| May 26, 5:36 PM EDT | Areal Flood Advisory | PHI | Lehigh, Northampton | 114 min |
| May 26, 6:02 PM EDT | Special Weather Statement | PHI | Berks | 43 min |
| May 26, 6:10 PM EDT | Areal Flood Advisory | PHI | Berks, Bucks, Montgomery | 111 min |
| May 26, 6:26 PM EDT | Special Weather Statement | PHI | Berks | 49 min |
| May 26, 7:18 PM EDT | Areal Flood Advisory | PHI | Bucks | 60 min |
| May 26, 7:20 PM EDT | Areal Flood Advisory | PHI | Berks, Chester | 59 min |
Nearby
Flash Flood Warnings in Pennsylvania, 2012Every flash flood warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.