Alert archive / New Jersey / Flash Flood Warnings in 2011
Flash Flood Warning 31, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 15, 2011, 2:35 PM EDT for Northampton County, Pennsylvania; Hunterdon County, Warren County, New Jersey. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 15, 2011, 2:35 PM EDT (18:35 UTC)
- Expired
- Aug 15, 2011, 5:13 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Hunterdon County, NJ, Warren County, NJ, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 89 km from the middle of the area, began a volume at 18:38 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
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.6 hours before the alert went out and 158 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
- 460 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 689 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
094
WGUS51 KPHI 151835
FFWPHI
NJC019-041-PAC095-152230-
/O.NEW.KPHI.FF.W.0031.110815T1835Z-110815T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
235 PM EDT MON AUG 15 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHWESTERN WARREN COUNTY...
HUNTERDON COUNTY...
NORTHAMPTON COUNTY...
* UNTIL 630 PM EDT...
* AT 229 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM THUNDERSTORMS OVER NORTHAMPTON...SOUTHWESTERN
WARREN...AND HUNTERDON COUNTIES. UP TO ONE INCH PER HOUR HAS BEEN
REPORTED. GIVEN THE ALREADY WET CONDITIONS FROM RAIN ON SATURDAY AND
SUNDAY...FLASH FLOODING CAN BE EXPECTED WHEREVER THE HEAVIEST RAIN
HAPPENS TO FALL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND. MANY FLOODING DEATHS OCCUR IN CARS!
PLEASE REPORT FLOODING...HAIL OR WIND DAMAGE TO THE NATIONAL WEATHER
SERVICE BY CALLING TOLL FREE...1-877-633-6772.
&&
LAT...LON 4077 7491 4077 7486 4073 7483 4071 7473
4065 7474 4057 7471 4049 7477 4050 7480
4048 7479 4034 7489 4040 7497 4042 7506
4053 7507 4056 7511 4056 7519 4062 7520
4055 7533 4066 7543 4075 7555 4096 7510
$$
FORECASTER:JJM1 follow-up statement
152
WGUS71 KPHI 152113
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
513 PM EDT MON AUG 15 2011
NJC019-041-PAC095-152123-
/O.CAN.KPHI.FF.W.0031.000000T0000Z-110815T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WARREN NJ-HUNTERDON NJ-NORTHAMPTON PA-
513 PM EDT MON AUG 15 2011
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTHAMPTON...
HUNTERDON AND SOUTHWESTERN WARREN COUNTIES...
THE WATERS FROM THE EARLIER HEAVY RAINS ARE RECEDING AND FLOOD WATERS
NO LONGER POSE A THREAT TO LIFE OR PROPERTY. THEREFORE...THE FLASH
FLOOD WARNING HAS BEEN CANCELLED.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO EASTON.
LAT...LON 4077 7491 4077 7486 4073 7483 4071 7473
4065 7474 4057 7471 4049 7477 4050 7480
4048 7479 4034 7489 4040 7497 4042 7506
4053 7507 4056 7511 4056 7519 4062 7520
4055 7533 4066 7543 4075 7555 4096 7510
$$
FORECASTER:JJMThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 15, 1:05 PM EDT | Areal Flood Advisory | PHI | Chester, Delaware, Montgomery | 4 hr |
| Aug 15, 1:56 PM EDT | Special Weather Statement | PHI | Bucks, Delaware, Monroe, Montgomery, Northampton, Philadelphia | 94 min |
| Aug 15, 2:04 PM EDT | Areal Flood Advisory | PHI | Bucks, Philadelphia | 3 hr |
| Aug 14, 11:03 PM EDT | Areal Flood Warning | PHI | Monmouth, Ocean | 8 hr |
| Aug 15, 12:03 AM EDT | River Flood Warning | PHI | Somerset | 33 hr |
| Aug 15, 5:31 AM EDT | Areal Flood Warning | PHI | Cumberland, Gloucester, Salem | 4 hr |
| Aug 15, 5:34 AM EDT | Areal Flood Warning | PHI | Somerset | 3 hr |
| Aug 15, 9:24 AM EDT | Areal Flood Warning | PHI | Cumberland, Salem | 12 hr |
| Aug 15, 2:56 PM EDT | Special Weather Statement | PHI | Burlington, Camden, Cumberland, Gloucester, Mercer, Middlesex and 4 more | 109 min |
| Aug 15, 3:10 PM EDT | Flash Flood Warning | PHI | Morris, Sussex | 3 hr |
| Aug 15, 3:48 PM EDT | Special Marine Warning | PHI | 87 min | |
| Aug 15, 4:15 PM EDT | Special Weather Statement | PHI | Cape May | 60 min |
| Aug 15, 4:33 PM EDT | Special Marine Warning | PHI | 57 min | |
| Aug 15, 5:08 PM EDT | Areal Flood Warning | PHI | Atlantic | 4 hr |
| Aug 15, 5:25 PM EDT | Special Marine Warning | PHI | 110 min | |
| Aug 15, 5:46 PM EDT | Areal Flood Warning | PHI | Morris | 15 hr |
Nearby
Flash Flood Warnings in New Jersey, 2011Flash Flood Warnings in Pennsylvania, 2011Every flash flood warning in 2011
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.