Alert archive / Pennsylvania / Areal Flood Warnings in 2011
Areal Flood Warning 89, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood warning at Sep 23, 2011, 5:53 PM EDT for 5 counties in Pennsylvania; Warren County, New Jersey. It was in force for 12 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Sep 23, 2011, 5:53 PM EDT (21:53 UTC)
- Expired
- Sep 24, 2011, 6:07 AM EDT
- In force
- 12 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Warren County, NJ, Berks County, PA, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 133 km from the middle of the area, began a volume at 21:57 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 23, 8:30 PM EDT | FLOOD | Birdsboro, PA | PA ROUTE 724 CLOSED BIRDSBORO TO UNION TOWNSHIP. ROAD FLOODING AND CLOSURES ALSO IN AMITY... DOUGLASS AND COLEBROOKDALE TOWNSHIPS |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 9.9 hours before the alert went out and 225 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
- 454 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 434 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
072
WGUS41 KPHI 232153
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
553 PM EDT FRI SEP 23 2011
NJC041-PAC011-025-077-089-095-240145-
/O.NEW.KPHI.FA.W.0089.110923T2153Z-110924T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WARREN NJ-BERKS PA-LEHIGH PA-NORTHAMPTON PA-CARBON PA-MONROE PA-
553 PM EDT FRI SEP 23 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS IN...
WARREN COUNTY IN NORTHWEST NEW JERSEY...
BERKS COUNTY IN EASTERN PENNSYLVANIA...
LEHIGH COUNTY IN EASTERN PENNSYLVANIA...
NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...
CARBON COUNTY IN NORTHEAST PENNSYLVANIA...
MONROE COUNTY IN NORTHEAST PENNSYLVANIA...
* UNTIL 945 PM EDT
* AT 552 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED
MODERATE TO HEAVY RAIN ACROSS PORTIONS OF THE WARNED AREA. WITH UP
TO TWO INCHES OF RAIN ALREADY FALLING, COMBINED WITH ANOTHER ONE TO
TWO INCHES THIS EVENING, EXCESSIVE RUNOFF WILL CAUSE FLOODING OF
SMALL CREEKS AND STREAMS, URBAN AREAS, HIGHWAYS, STREETS AND
UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
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.
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.
&&
LAT...LON 4116 7516 4110 7499 4091 7477 4070 7498
4059 7518 4059 7526 4042 7549 4044 7553
4024 7570 4014 7589 4049 7644 4059 7603
4064 7600 4074 7578 4091 7600 4100 7575
4110 7577 4113 7564 4125 7550 4126 7514
$$
KRUZDLO4 follow-up statements
576
WGUS81 KPHI 240135
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
935 PM EDT FRI SEP 23 2011
NJC041-PAC025-089-095-240142-
/O.CAN.KPHI.FA.W.0089.000000T0000Z-110924T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WARREN NJ-NORTHAMPTON PA-CARBON PA-MONROE PA-
935 PM EDT FRI SEP 23 2011
...THE FLOOD WARNING HAS BEEN CANCELLED FOR URBAN AREAS AND SMALL
STREAMS IN MONROE...CARBON...NORTHAMPTON AND WARREN COUNTIES...
THE HEAVY RAIN HAS MOVED OUT OF THE AREA. THE WARNING HAS BEEN
CANCELLED.
LAT...LON 4049 7586 4066 7563 4067 7554 4061 7545
4056 7543 4053 7535 4049 7543 4042 7549
4044 7553 4024 7570 4014 7589 4027 7609
$$
PAC011-077-240145-
/O.CON.KPHI.FA.W.0089.000000T0000Z-110924T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BERKS PA-LEHIGH PA-
935 PM EDT FRI SEP 23 2011
...THE FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM EDT FOR URBAN
AREAS AND SMALL STREAMS IN SOUTHERN LEHIGH AND EASTERN BERKS
COUNTIES...
AT 932 PM EDT...THE FLOOD WARNING REMAINED IN EFFECT. FLOODING HAS
CLOSED STATE ROUTE 724 FROM BIRDSBORO TO UNION TOWNSHIP. ROADS WERE
ALSO FLOODED IN AMITY, DOUGLASS AND COLEBROOKEDALE TOWNSHIPS.
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.
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.
&&
LAT...LON 4049 7586 4066 7563 4067 7554 4061 7545
4056 7543 4053 7535 4049 7543 4042 7549
4044 7553 4024 7570 4014 7589 4027 7609
$$
KRUZDLO666
WGUS41 KPHI 240138
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
938 PM EDT FRI SEP 23 2011
PAC011-077-240445-
/O.EXT.KPHI.FA.W.0089.000000T0000Z-110924T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BERKS PA-LEHIGH PA-
938 PM EDT FRI SEP 23 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE
* FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS IN...
EASTERN BERKS COUNTY IN EASTERN PENNSYLVANIA...
SOUTHERN LEHIGH COUNTY IN EASTERN PENNSYLVANIA...
* UNTIL 1245 AM EDT
* AT 937 PM EDT...FLOODING HAS CLOSED STATE ROUTE 724 FROM BIRDSBORO
TO UNION TOWNSHIP. ROADS WERE ALSO FLOODED IN AMITY, DOUGLASS AND
COLEBROOKEDALE TOWNSHIPS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO
HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO
FLOODING WHEN WATER BEGINS RISING.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
&&
LAT...LON 4049 7586 4066 7563 4067 7554 4061 7545
4056 7543 4053 7535 4049 7543 4042 7549
4044 7553 4024 7570 4014 7589 4027 7609
$$
KRUZDLO878
WGUS41 KPHI 240327
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1127 PM EDT FRI SEP 23 2011
PAC011-077-241045-
/O.EXT.KPHI.FA.W.0089.000000T0000Z-110924T1045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BERKS PA-LEHIGH PA-
1127 PM EDT FRI SEP 23 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE
* FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS IN...
EASTERN BERKS COUNTY IN EASTERN PENNSYLVANIA...
SOUTHERN LEHIGH COUNTY IN EASTERN PENNSYLVANIA...
* UNTIL 645 AM EDT SATURDAY
* AT 1125 PM EDT RUNOFF FROM THE HEAVY RAIN CONTINUES TO CAUSE FLOODING
ALONG STREAMS AND CREEKS IN THE WARNING AREA. THE MANATAWNY CREEK
AT SPANGVILLE IN BERKS COUNTY REMAINS ABOVE FLOOD STAGE. IN ADDITION
ROADWAY CLOSURES AND FLOODING WERE REPORTED IN OTHER TOWNSHIPS IN
EASTERN BERKS COUNTY. COMPARABLE RAINFALL AMOUNTS FELL IN SOUTHERN
LEHIGH COUNTY.
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.
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.
&&
LAT...LON 4049 7586 4066 7563 4067 7554 4061 7545
4056 7543 4053 7535 4049 7543 4042 7549
4044 7553 4024 7570 4014 7589 4027 7609
$$
TFG227
WGUS81 KPHI 241007
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
607 AM EDT SAT SEP 24 2011
PAC011-077-241017-
/O.CAN.KPHI.FA.W.0089.000000T0000Z-110924T1045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BERKS PA-LEHIGH PA-
607 AM EDT SAT SEP 24 2011
...THE FLOOD WARNING HAS BEEN CANCELLED FOR URBAN AREAS AND SMALL
STREAMS IN SOUTHERN LEHIGH AND EASTERN BERKS COUNTIES...
LAT...LON 4049 7586 4066 7563 4067 7554 4061 7545
4056 7543 4053 7535 4049 7543 4042 7549
4044 7553 4024 7570 4014 7589 4027 7609
$$
MPDThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 23, 10:13 AM EDT | Areal Flood Advisory | PHI | Chester, Delaware | 5 hr |
| Sep 23, 10:52 AM EDT | Areal Flood Advisory | PHI | Bucks, Montgomery, Philadelphia | 5 hr |
| Sep 23, 11:49 AM EDT | Areal Flood Advisory | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 6 hr |
| Sep 23, 12:47 PM EDT | Flash Flood Warning | PHI | Philadelphia | 2 hr |
| Sep 23, 1:59 PM EDT | Areal Flood Warning | PHI | Carbon | 3 hr |
| Sep 23, 5:27 PM EDT | Areal Flood Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 12 hr |
| Sep 23, 6:34 PM EDT | Areal Flood Warning | PHI | Bucks | 4 hr |
| Sep 23, 6:31 PM EDT | Special Weather Statement | PHI | Salem | 29 min |
| Sep 23, 6:38 PM EDT | Areal Flood Warning | PHI | Sussex | 6 hr |
| Sep 23, 7:30 PM EDT | Areal Flood Warning | PHI | Burlington, Monmouth, Ocean | 2 hr |
| Sep 23, 7:48 PM EDT | Areal Flood Warning | PHI | Middlesex, Morris, Somerset | 5 hr |
Nearby
Areal Flood Warnings in Pennsylvania, 2011Areal Flood Warnings in New Jersey, 2011Every areal 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.