Alert archive / Pennsylvania / Areal Flood Warnings in 2011
Areal Flood Warning 33, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood warning at Aug 14, 2011, 12:37 PM EDT for Bucks County, Lehigh County, Northampton County, Pennsylvania; Hunterdon County, Warren County, New Jersey. It was in force for 7 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 14, 2011, 12:37 PM EDT (16:37 UTC)
- Expired
- Aug 14, 2011, 8:03 PM EDT
- In force
- 7 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Hunterdon County, NJ, Warren County, NJ, Bucks County, PA, Lehigh County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 93 km from the middle of the area, began a volume at 16:38 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
Albany, NY (KALY), launched 12:00Z, 4.6 hours before the alert went out and 243 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
- 99 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 657 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
819
WGUS41 KPHI 141637
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1237 PM EDT SUN AUG 14 2011
NJC019-041-PAC017-077-095-150030-
/O.NEW.KPHI.FA.W.0033.110814T1637Z-110815T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WARREN NJ-HUNTERDON NJ-LEHIGH PA-NORTHAMPTON PA-BUCKS PA-
1237 PM EDT SUN AUG 14 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...
HUNTERDON COUNTY IN NORTHWEST NEW JERSEY...
LEHIGH COUNTY IN EASTERN PENNSYLVANIA...
NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA...
NORTHERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...
* UNTIL 830 PM EDT
* AT 1230 PM EDT...SHOWERS AND THUNDERSTORMS WITH LOCALLY HEAVY RAIN
WERE CONTINUING TO MOVE THROUGH EASTERN PENNSYLVANIA AND
NORTHWESTERN NEW JERSEY. BY MIDDAY MUCH OF THE REGION HAD RECEIVED
1 TO 3 INCHES OF RAIN WITH LOCALLY HIGHER AMOUNTS. ADDITIONAL
HEAVY RAINFALL FROM THIS AFTERNOON INTO THIS EVENING WILL PRODUCE
MORE FLOODING.
A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN
REPORTED. IF YOU LIVE IN A LOCATION THAT IS PRONE TO FLOODING...BE
PREPARED TO MOVE TO HIGHER GROUND.
DO NOT DRIVE YOUR VEHICLE THROUGH FLOOD WATERS. THE WATER MAY BE
DEEPER THAN YOU THINK IT IS. YOU WILL BE PUTTING YOURSELF IN DANGER
AND YOU MAY DAMAGE YOUR VEHICLE...LEADING TO COSTLY REPAIRS.
LAT...LON 4091 7477 4087 7481 4083 7482 4078 7489
4073 7483 4071 7473 4065 7474 4057 7471
4050 7477 4050 7480 4042 7476 4037 7487
4034 7486 4031 7531 4068 7589 4078 7570
4086 7531 4108 7497
$$
IOVINO2 follow-up statements
723
WGUS81 KPHI 142025
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
425 PM EDT SUN AUG 14 2011
PAC077-142031-
/O.CAN.KPHI.FA.W.0033.000000T0000Z-110815T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LEHIGH PA-
425 PM EDT SUN AUG 14 2011
...THE FLOOD WARNING HAS BEEN CANCELLED FOR URBAN AREAS AND SMALL
STREAMS IN LEHIGH COUNTY...
THE HEAVY RAIN HAS MOVED OUT OF LEHIGH COUNTY. AS A RESULT...THE
FLOOD WARNING HAS BEEN CANCELLED.
LAT...LON 4091 7477 4078 7489 4070 7473 4057 7471
4050 7480 4042 7476 4037 7487 4034 7486
4031 7531 4043 7549 4053 7535 4058 7541
4063 7540 4067 7544 4065 7549 4074 7554
4074 7561 4079 7562 4085 7532 4108 7497
$$
NJC019-041-PAC017-095-150030-
/O.CON.KPHI.FA.W.0033.000000T0000Z-110815T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WARREN NJ-HUNTERDON NJ-NORTHAMPTON PA-BUCKS PA-
425 PM EDT SUN AUG 14 2011
...THE FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM EDT FOR URBAN
AREAS AND SMALL STREAMS IN NORTHERN BUCKS...NORTHAMPTON...HUNTERDON
AND WARREN COUNTIES...
AT 420 PM EDT...THE HEAVY RAIN HAD MOVED OUT OF NORTHAMPTON
COUNTY...NORTHERN BUCKS COUNTY...HUNTERDON COUNTY AND WARREN COUNTY.
HOWEVER...RUNOFF FROM THE RAIN THAT FELL DURING THE
OVERNIGHT...MORNING AND EARLY AFTERNOON HOURS CONTINUES TO MAKE ITS
WAY INTO AREA STREAMS AND CREEKS. SOME MINOR FLOODING REMAINS
POSSIBLE. ALSO...THERE CONTINUES TO BE A CHANCE FOR ADDITIONAL HEAVY
RAIN THIS EVENING.
A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN
REPORTED. IF YOU LIVE IN A LOCATION THAT IS PRONE TO FLOODING...BE
PREPARED TO MOVE TO HIGHER GROUND.
DO NOT DRIVE YOUR VEHICLE THROUGH FLOOD WATERS. THE WATER MAY BE
DEEPER THAN YOU THINK IT IS. YOU WILL BE PUTTING YOURSELF IN DANGER
AND YOU MAY DAMAGE YOUR VEHICLE...LEADING TO COSTLY REPAIRS.
LAT...LON 4091 7477 4078 7489 4070 7473 4057 7471
4050 7480 4042 7476 4037 7487 4034 7486
4031 7531 4043 7549 4053 7535 4058 7541
4063 7540 4067 7544 4065 7549 4074 7554
4074 7561 4079 7562 4085 7532 4108 7497
$$
IOVINO897
WGUS81 KPHI 150003
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
803 PM EDT SUN AUG 14 2011
NJC019-041-PAC017-095-150012-
/O.CAN.KPHI.FA.W.0033.000000T0000Z-110815T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WARREN NJ-HUNTERDON NJ-NORTHAMPTON PA-BUCKS PA-
803 PM EDT SUN AUG 14 2011
...THE FLOOD WARNING HAS BEEN CANCELLED FOR URBAN AREAS AND SMALL
STREAMS IN NORTHERN BUCKS...NORTHAMPTON...HUNTERDON AND WARREN
COUNTIES...
THE HEAVY RAIN HAS MOVED AWAY FROM THE REGION AND MOST SMALL STREAMS
AND CREEKS HAVE RETURNED TO THEIR BANKS. AS A RESULT, THE FLOOD
WARNING HAS BEEN CANCELLED.
LAT...LON 4091 7477 4078 7489 4070 7473 4057 7471
4050 7480 4042 7476 4037 7487 4034 7486
4031 7531 4043 7549 4053 7535 4058 7541
4063 7540 4067 7544 4065 7549 4074 7554
4074 7561 4079 7562 4085 7532 4108 7497
$$
IOVINOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 9:39 PM EDT | Areal Flood Advisory | PHI | Carbon, Lehigh, Monroe, Northampton | 4 hr |
| Aug 13, 9:56 PM EDT | Flash Flood Warning | PHI | Berks, Lehigh, Northampton | 4 hr |
| Aug 13, 11:33 PM EDT | Areal Flood Advisory | PHI | Bucks | 4 hr |
| Aug 14, 12:37 AM EDT | Areal Flood Advisory | PHI | Chester | 3 hr |
| Aug 14, 1:12 AM EDT | Flash Flood Warning | PHI | Chester | 4 hr |
| Aug 14, 3:42 AM EDT | Flash Flood Watch | PHI | Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more | 25 hr |
| Aug 14, 3:55 AM EDT | Flash Flood Warning | PHI | Bucks, Delaware, Montgomery, Philadelphia | 4 hr |
| Aug 14, 4:45 AM EDT | Special Weather Statement | PHI | Philadelphia | 60 min |
| Aug 14, 6:24 AM EDT | Areal Flood Advisory | PHI | Bucks | 3 hr |
| Aug 14, 7:43 AM EDT | Flash Flood Warning | PHI | Bucks, Delaware, Montgomery, Philadelphia | 4 hr |
| Aug 14, 9:21 AM EDT | Areal Flood Warning | PHI | Northampton | 3 hr |
| Aug 14, 1:00 PM EDT | Areal Flood Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 8 hr |
| Aug 13, 10:21 PM EDT | Flash Flood Warning | PHI | Warren | 4 hr |
| Aug 13, 11:16 PM EDT | Flash Flood Warning | PHI | Sussex | 4 hr |
| Aug 14, 12:03 AM EDT | Flash Flood Warning | PHI | Hunterdon, Morris, Somerset | 4 hr |
| Aug 14, 12:53 AM EDT | Areal Flood Advisory | PHI | Middlesex, Somerset | 3 hr |
| Aug 14, 2:15 AM EDT | Flash Flood Warning | PHI | Warren | 4 hr |
| Aug 14, 3:25 AM EDT | Small Craft Advisory | PHI | 30 hr | |
| Aug 14, 3:37 AM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester, Salem | 113 min |
| Aug 14, 5:37 AM EDT | Areal Flood Advisory | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean | 4 hr |
| Aug 14, 8:57 AM EDT | Flash Flood Warning | PHI | Atlantic, Burlington, Monmouth, Ocean | 4 hr |
| Aug 14, 11:40 AM EDT | Areal Flood Warning | PHI | Camden, Cumberland, Gloucester, Salem | 18 hr |
| Aug 14, 11:50 AM EDT | Special Marine Warning | PHI | 40 min | |
| Aug 14, 12:00 PM EDT | Areal Flood Warning | PHI | Morris | 28 hr |
| Aug 14, 12:25 PM EDT | Special Marine Warning | PHI | 35 min | |
| Aug 14, 12:28 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Salem | 62 min |
| Aug 14, 1:24 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cumberland, Gloucester, Salem | 66 min |
| Aug 14, 1:36 PM EDT | Areal Flood Warning | PHI | Mercer, Middlesex, Morris, Somerset | 16 hr |
| Aug 14, 2:21 PM EDT | Areal Flood Warning | PHI | Burlington | 6 hr |
| Aug 14, 2:23 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Gloucester | 52 min |
| Aug 14, 4:03 PM EDT | Special Weather Statement | PHI | Ocean | 57 min |
| Aug 14, 4:04 PM EDT | River Flood Warning | PHI | Mercer | 9 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.