Alert archive / Pennsylvania / Areal Flood Warnings in 2012
Areal Flood Warning 39, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood warning at Dec 21, 2012, 5:39 AM EST for Bucks County, Pennsylvania; Hunterdon County, New Jersey. It was in force for 10 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
- Dec 21, 2012, 5:39 AM EST (10:39 UTC)
- Expired
- Dec 21, 2012, 3:45 PM EST
- In force
- 10 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Hunterdon County, NJ, Bucks County, PA
The radar
The Philadelphia radar (KDIX), 74 km from the middle of the area, began a volume at 10:42 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 00:00Z, 10.7 hours before the alert went out and 178 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
- 3 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 671 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 121 m²/s²
- 0-3 km storm-relative helicity
- 206 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
428
WGUS41 KPHI 211039
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
539 AM EST FRI DEC 21 2012
NJC019-PAC017-211445-
/O.NEW.KPHI.FA.W.0039.121221T1039Z-121221T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HUNTERDON NJ-BUCKS PA-
539 AM EST FRI DEC 21 2012
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLOOD WARNING FOR SMALL STREAMS IN...
HUNTERDON COUNTY IN NORTHWEST NEW JERSEY...
BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...
* UNTIL 945 AM EST
* AT 538 AM EST MODERATE TO HEAVY RAINS CONTINUE OVER THE AREA. THE
RAINS WILL PERSIST A FEW MORE HOURS.
* FLOODING WILL OCCUR ON SMALL CREEKS AND STREAMS ACROSS BUCKS AND
HUNTERDON COUNTIES.
A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.
STREAM RISES WILL BE SLOW AND FLASH FLOODING IS NOT EXPECTED.
HOWEVER...ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS
IMMEDIATELY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF 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.
A FLOOD WARNING MEANS FLOODING IS OCCURRING OR IS IMMINENT. MOST
FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS
WATER COVERED BRIDGES...DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO
CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING
WATER MOVE UP TO HIGHER GROUND.
&&
LAT...LON 4052 7476 4051 7479 4043 7475 4037 7487
4034 7486 4034 7494 4016 7472 4005 7498
4012 7496 4043 7548 4057 7528 4061 7520
4059 7518 4071 7498 4079 7489 4074 7483
4072 7472 4064 7473 4062 7470
$$
PO3 follow-up statements
818
WGUS41 KPHI 211443
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
943 AM EST FRI DEC 21 2012
NJC019-PAC017-211745-
/O.EXT.KPHI.FA.W.0039.000000T0000Z-121221T1745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HUNTERDON NJ-BUCKS PA-
943 AM EST FRI DEC 21 2012
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE
* FLOOD WARNING FOR SMALL STREAMS IN...
HUNTERDON COUNTY IN NORTHWEST NEW JERSEY...
BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...
* UNTIL 1245 PM EST
* AT 939 AM EST...IN HUNTERDON COUNTY, WATER LEVELS ON THE NESHANIC
AT REAVILLE AND ON SPRUCE RUN AT GLEN GARDNER REMAIN HIGH. IN BUCKS
COUNTY, WATER LEVELS ON THE PERKIOMEN, NESHAMINY, AND LITTLE
NESHAMINY ALSO REMAIN HIGH. FLOODING IS STILL ONGOING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
DRIVING INTO FLOOD WATERS COULD PUT YOUR LIFE AT RISK AND COST YOU
THOUSANDS OF DOLLARS IN VEHICLE REPAIRS. FLOOD WATERS MAY BE DEEPER
THAN YOU THINK. TURN AROUND AND FIND AN ALTERNATE ROUTE.
&&
LAT...LON 4052 7476 4051 7479 4043 7475 4037 7487
4034 7486 4034 7494 4016 7472 4005 7498
4012 7496 4043 7548 4057 7528 4061 7520
4059 7518 4071 7498 4079 7489 4074 7483
4072 7472 4064 7473 4062 7470
$$
KRUZDLO231
WGUS41 KPHI 211716
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1216 PM EST FRI DEC 21 2012
NJC019-PAC017-212045-
/O.EXT.KPHI.FA.W.0039.000000T0000Z-121221T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HUNTERDON NJ-BUCKS PA-
1216 PM EST FRI DEC 21 2012
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE
* FLOOD WARNING FOR SMALL STREAMS IN...
HUNTERDON COUNTY IN NORTHWEST NEW JERSEY...
BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...
* UNTIL 345 PM EST
* AT 1215 PM EST...IN HUNTERDON COUNTY, WATER LEVELS ON THE NESHANIC
AT REAVILLE AND ON SPRUCE RUN AT GLEN GARDNER REMAIN HIGH ALTHOUGH
THEY HAVE CRESTED. IN BUCKS COUNTY, WATER LEVELS ON THE PERKIOMEN,
NESHAMINY, AND LITTLE NESHAMINY ALSO REMAIN HIGH. FLOODING IS STILL
ONGOING.
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.
DRIVING INTO FLOOD WATERS COULD PUT YOUR LIFE AT RISK AND COST YOU
THOUSANDS OF DOLLARS IN VEHICLE REPAIRS. FLOOD WATERS MAY BE DEEPER
THAN YOU THINK. TURN AROUND AND FIND AN ALTERNATE ROUTE.
&&
LAT...LON 4052 7476 4051 7479 4043 7475 4037 7487
4034 7486 4034 7494 4016 7472 4005 7498
4012 7496 4043 7548 4057 7528 4061 7520
4059 7518 4071 7498 4079 7489 4074 7483
4072 7472 4064 7473 4062 7470
$$
KRUZDLO693
WGUS81 KPHI 212045
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
345 PM EST FRI DEC 21 2012
NJC019-PAC017-212052-
/O.EXP.KPHI.FA.W.0039.000000T0000Z-121221T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HUNTERDON NJ-BUCKS PA-
345 PM EST FRI DEC 21 2012
...THE FLOOD WARNING WILL EXPIRE AT 345 PM EST FOR SMALL STREAMS IN
BUCKS AND HUNTERDON COUNTIES...
ALTHOUGH THE FLOOD WARNING FOR SMALL STREAMS WILL EXPIRE AT 345 PM,
THE FLOOD WARNING FOR THE LARGER NESHAMINY REMAINS IN PLACE AND WILL
BE COVERED BY A SPECIFIC RIVER FLOOD WARNING.
LAT...LON 4052 7476 4051 7479 4043 7475 4037 7487
4034 7486 4034 7494 4016 7472 4005 7498
4012 7496 4043 7548 4057 7528 4061 7520
4059 7518 4071 7498 4079 7489 4074 7483
4072 7472 4064 7473 4062 7470
$$
KRUZDLOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 20, 9:00 PM EST | Winter Weather Advisory | PHI | Carbon, Monroe | 2 hr |
| Dec 20, 9:11 PM EST | Wind Advisory | PHI | Bucks, Delaware, Montgomery, Philadelphia | 12 hr |
| Dec 21, 12:27 AM EST | Coastal Flood Warning | PHI | Delaware, Philadelphia | 11 hr |
| Dec 21, 4:44 AM EST | Areal Flood Warning | PHI | Chester, Montgomery | 14 hr |
| Dec 21, 5:17 AM EST | Areal Flood Warning | PHI | Delaware | 4 hr |
| Dec 21, 7:15 AM EST | River Flood Warning | PHI | Delaware | 4 hr |
| Dec 21, 7:36 AM EST | Areal Flood Warning | PHI | Monroe, Northampton | 15 hr |
| Dec 21, 7:49 AM EST | Areal Flood Warning | PHI | Philadelphia | 11 hr |
| Dec 21, 9:24 AM EST | Areal Flood Warning | PHI | Delaware | 4 hr |
| Dec 21, 9:36 AM EST | River Flood Warning | PHI | Bucks | 10 hr |
| Dec 21, 12:08 PM EST | River Flood Warning | PHI | Chester, Delaware | 5 hr |
| Dec 21, 3:16 PM EST | Wind Advisory | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 27 hr |
| Dec 21, 6:17 AM EST | Areal Flood Warning | PHI | Morris | 15 hr |
| Dec 21, 1:12 PM EST | Areal Flood Warning | PHI | Somerset | 8 hr |
| Dec 21, 5:45 PM EST | River Flood Warning | PHI | Morris, Passaic | 35 hr |
Nearby
Areal Flood Warnings in Pennsylvania, 2012Areal Flood Warnings in New Jersey, 2012Every areal 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.