Alert archive / Pennsylvania / Areal Flood Warnings in 2016
Areal Flood Warning 5, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood warning at Feb 16, 2016, 7:12 PM EST for 4 counties in Pennsylvania. It was in force for 6 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
- Feb 16, 2016, 7:12 PM EST (00:12 UTC)
- Expired
- Feb 17, 2016, 1:00 AM EST
- In force
- 6 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Berks County, PA, Chester County, PA, Delaware County, PA, Montgomery County, PA
The radar
The Philadelphia radar (KDIX), 105 km from the middle of the area, began a volume at 00:15 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
Washington/Dulle, VA (KIAD), launched 00:00Z, 0.2 hours before the alert went out and 202 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1052 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- -199 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
007
WGUS41 KPHI 170012
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
712 PM EST TUE FEB 16 2016
PAC011-029-045-091-170600-
/O.NEW.KPHI.FA.W.0005.160217T0012Z-160217T0600Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHESTER PA-BERKS PA-DELAWARE PA-MONTGOMERY PA-
712 PM EST TUE FEB 16 2016
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLOOD WARNING FOR...
RAIN AND SNOWMELT IN...
CHESTER COUNTY IN SOUTHEASTERN PENNSYLVANIA...
SOUTHEASTERN BERKS COUNTY IN EASTERN PENNSYLVANIA...
CENTRAL DELAWARE COUNTY IN SOUTHEASTERN PENNSYLVANIA...
NORTHWESTERN MONTGOMERY COUNTY IN SOUTHEASTERN PENNSYLVANIA...
* UNTIL 100 AM EST
* AT 705 PM EST...MANY SMALL STREAMS IN THE AREA HAVE CRESTED AND
ARE FALLING AT THIS TIME. HOWEVER...SOME LARGER TRIBUTARIES...SUCH
AS THE PERKIOMEN CREEK BELOW GRATERFORD...AND THE BRANDYWINE CREEK
BELOW DOWINGTOWN...WILL RISE ANOTHER FEW INCHES BEFORE CRESTING
LATER THIS EVENING. THE FLOOD WARNING HAS THEREFORE BEEN EXTENDED
INTO THE OVERNIGHT HOURS TO ALLOW TIME FOR THESE LARGER
TRIBUTARIES TO DRAIN.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
WEST CHESTER...POTTSTOWN...PHOENIXVILLE...LANSDALE...WEST
NORRITON...EAST NORRITON...COATESVILLE...WESTTOWN...DOWNINGTOWN...
KENNETT SQUARE...BIRDSBORO...COLLEGEVILLE...ROYERSFORD...TRAPPE...
HATFIELD...EAST GREENVILLE...HONEY BROOK...SCHWENKSVILLE...ELVERSON
AND BALLY.
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.
&&
LAT...LON 4048 7564 4025 7525 4009 7544 3998 7531
3986 7551 3982 7572 4010 7592 4013 7585
4023 7592
$$
JJM1 follow-up statement
337
WGUS81 KPHI 170307
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1007 PM EST TUE FEB 16 2016
PAC011-029-045-091-170316-
/O.CAN.KPHI.FA.W.0005.000000T0000Z-160217T0600Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHESTER PA-BERKS PA-DELAWARE PA-MONTGOMERY PA-
1007 PM EST TUE FEB 16 2016
...THE FLOOD WARNING FOR RAIN AND SNOWMELT HAS BEEN CANCELLED FOR
CHESTER...SOUTHEASTERN BERKS...CENTRAL DELAWARE AND NORTHWESTERN
MONTGOMERY COUNTIES...
FLOOD WATERS HAVE RECEDED...AND ARE NO LONGER EXPECTED TO POSE A
THREAT TO LIFE OR PROPERTY. PLEASE CONTINUE TO HEED ANY ROAD
CLOSURES.
LAT...LON 4048 7564 4025 7525 4009 7544 3998 7531
3986 7551 3982 7572 4010 7592 4013 7585
4023 7592
$$Nearby
Areal Flood Warnings in Pennsylvania, 2016Every areal flood warning in 2016
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.