Alert archive / Pennsylvania / Areal Flood Warnings in 2011
Areal Flood Warning 2, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood warning at Mar 6, 2011, 4:55 PM EST for Carbon County, Lehigh County, Northampton County, Pennsylvania. It was in force for 12 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
- Mar 6, 2011, 4:55 PM EST (21:55 UTC)
- Expired
- Mar 7, 2011, 4:45 AM EST
- In force
- 12 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Carbon County, PA, Lehigh County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 147 km from the middle of the area, began a volume at 21:56 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, 9.9 hours before the alert went out and 235 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
- 10 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 597 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 351 m²/s²
- 0-3 km storm-relative helicity
- 326 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
989
WGUS41 KPHI 062155
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
455 PM EST SUN MAR 6 2011
PAC025-077-095-070345-
/O.NEW.KPHI.FA.W.0002.110306T2155Z-110307T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LEHIGH PA-NORTHAMPTON PA-CARBON PA-
455 PM EST SUN MAR 6 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS IN...
LEHIGH COUNTY IN EASTERN PENNSYLVANIA...
NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...
CARBON COUNTY IN NORTHEAST PENNSYLVANIA...
* UNTIL 1045 PM EST
* AT 452 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
AN AREA OF HEAVY RAIN APPROACHING THE LEHIGH VALLEY AND SOUTHERN
POCONOS. AS MUCH AS ONE AND THREE-QUARTERS OF AN INCH OF RAIN HAS
FALLEN SO FAR...AND ANOTHER INCH IS POSSIBLE THIS EVENING.
ADDITIONAL RAINFALL THIS EVENING WILL RESULT IN STREAMS AND CREEKS
RISES OUT OF THEIR BANKS. IN ADDITION...ROAD FLOODING AND FLOODING
OF POOR DRAINAGE AREAS CAN BE EXPECTED.
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.
LAT...LON 4112 7566 4100 7553 4097 7552 4094 7557
4081 7549 4092 7514 4059 7526 4043 7549
4067 7587 4069 7588 4074 7578 4084 7593
4091 7596 4098 7586 4100 7575 4104 7577
$$
HAYES2 follow-up statements
376
WGUS41 KPHI 070341
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1041 PM EST SUN MAR 6 2011
PAC025-077-095-070945-
/O.EXT.KPHI.FA.W.0002.000000T0000Z-110307T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LEHIGH PA-NORTHAMPTON PA-CARBON PA-
1041 PM EST SUN MAR 6 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE
* FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS IN...
LEHIGH COUNTY IN EASTERN PENNSYLVANIA...
NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...
CARBON COUNTY IN NORTHEAST PENNSYLVANIA...
* UNTIL 445 AM EST MONDAY
* AT 1038 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED
RAIN MOVING ACROSS THE WARNED AREA. SMALL RIVERS...CREEKS AND
STREAMS CONTINUE TO RISE THIS EVENING...AND AS THE RUNOFF FROM THE
EARLIER HEAVY RAIN GETS INTO THE RIVERS AND STREAMS...MORE IN THE
WAY OF FLOODING IS EXPECTED.
A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.
STREAM RISES WILL BE SLOW AND FLASH FLOODING IS NOT EXPECTED.
HOWEVER...ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS
IMMEDIATELY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO
HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO
FLOODING WHEN WATER BEGINS RISING.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
&&
LAT...LON 4112 7566 4100 7553 4097 7552 4094 7557
4081 7549 4092 7514 4059 7526 4043 7549
4067 7587 4069 7588 4074 7578 4084 7593
4091 7596 4098 7586 4100 7575 4104 7577
$$
HAYES460
WGUS81 KPHI 070937
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
437 AM EST MON MAR 7 2011
PAC025-077-095-070948-
/O.EXP.KPHI.FA.W.0002.000000T0000Z-110307T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LEHIGH PA-NORTHAMPTON PA-CARBON PA-
437 AM EST MON MAR 7 2011
...THE FLOOD WARNING WILL EXPIRE AT 445 AM EST FOR URBAN AREAS AND
SMALL STREAMS IN CARBON...NORTHAMPTON AND LEHIGH COUNTIES...
LAT...LON 4112 7566 4100 7553 4097 7552 4094 7557
4081 7549 4092 7514 4059 7526 4043 7549
4067 7587 4069 7588 4074 7578 4084 7593
4091 7596 4098 7586 4100 7575 4104 7577
$$
KRUZDLOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 6, 3:30 AM EST | Coastal Flood Statement | PHI | Delaware, Philadelphia | 17 hr |
| Mar 6, 3:37 AM EST | Winter Weather Advisory | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 28 hr |
| Mar 6, 2:19 PM EST | Areal Flood Advisory | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 6 hr |
| Mar 6, 3:14 PM EST | Special Weather Statement | PHI | Chester, Delaware, Montgomery | 61 min |
| Mar 6, 3:32 PM EST | Areal Flood Warning | PHI | Berks, Monroe | 41 days |
| Mar 6, 5:33 PM EST | Areal Flood Advisory | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 4 hr |
Nearby
Areal Flood Warnings in Pennsylvania, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.