Alert archive / Pennsylvania / Flash Flood Warnings in 2011
Flash Flood Warning 38, NWS State College, PA
NWS State College, PA issued this flash flood warning at Sep 4, 2011, 11:44 PM EDT for 7 counties in Pennsylvania. It was in force for 3 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
- Sep 4, 2011, 11:44 PM EDT (03:44 UTC)
- Expired
- Sep 5, 2011, 2:45 AM EDT
- In force
- 3 hr
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Adams County, PA, Cumberland County, PA, Dauphin County, PA, Lancaster County, PA, Lebanon County, PA, Perry County, PA, York County, PA
The radar
The State College radar (KCCX), 131 km from the middle of the area, began a volume at 03:46 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, 3.7 hours before the alert went out and 141 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
- 2382 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 895 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 63 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.2
The text
As transmitted, in the capitals the NWS used until 2016.
551
WGUS51 KCTP 050344
FFWCTP
PAC001-041-043-071-075-099-133-050645-
/O.NEW.KCTP.FF.W.0038.110905T0344Z-110905T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1144 PM EDT SUN SEP 4 2011
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EASTERN ADAMS COUNTY...
NORTHEASTERN CUMBERLAND COUNTY...
DAUPHIN COUNTY...
WEST CENTRAL LANCASTER COUNTY...
WESTERN LEBANON COUNTY...
NORTHEASTERN PERRY COUNTY...
YORK COUNTY...
* UNTIL 245 AM EDT...
* AT 900 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM THUNDERSTORMS MOVING INTO DAUPHIN...EASTERN
ADAMS...NORTHEASTERN CUMBERLAND...NORTHEASTERN PERRY...WEST
CENTRAL LANCASTER...WESTERN LEBANON AND YORK COUNTIES.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
DALLASTOWN...HANOVER...PARKVILLE...SPRY...WEIGELSTOWN...YORK...
ELIZABETHTOWN...CAMP HILL...ENOLA...LEMOYNE...LOWER ALLEN...
MECHANICSBURG...NEW CUMBERLAND...PALMYRA...COLONIAL PARK...
HARRISBURG...HERSHEY...HUMMELSTOWN...LINGLESTOWN...MIDDLETOWN...
PROGRESS AND STEELTON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. NEVER ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR IN AN
AUTOMOBILE. TURN AROUND DON'T DROWN!
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH 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.
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. TURN AROUND...DON'T DROWN! NEVER TRY
TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE
RISING WATER MOVE UP TO HIGHER GROUND.
&&
LAT...LON 3972 7718 4061 7698 4057 7656 4051 7647
3972 7668
$$
FORECASTER: KFThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 8:11 PM EDT | Areal Flood Advisory | CTP | Columbia, Montour, Northumberland, Snyder, Union | 3 hr |
| Sep 4, 8:21 PM EDT | Special Weather Statement | CTP | Adams, Cumberland, Dauphin, Franklin, Perry | 54 min |
| Sep 4, 9:11 PM EDT | Special Weather Statement | CTP | Adams, Columbia, Cumberland, Dauphin, Lebanon, Northumberland and 3 more | 64 min |
| Sep 4, 9:51 PM EDT | Areal Flood Advisory | CTP | Cumberland, Dauphin, Lebanon, Northumberland, Perry, Schuylkill and 1 more | 3 hr |
| Sep 4, 10:11 PM EDT | Special Weather Statement | CTP | Columbia, Dauphin, Lebanon, Schuylkill | 64 min |
| Sep 4, 10:14 PM EDT | Special Weather Statement | CTP | Adams, Cumberland, Franklin, York | 61 min |
| Sep 4, 10:31 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, Lebanon, Schuylkill | 44 min |
| Sep 4, 10:54 PM EDT | Areal Flood Advisory | CTP | Adams, Cumberland, Franklin, Juniata, Perry, Snyder and 1 more | 3 hr |
| Sep 4, 11:29 PM EDT | Flash Flood Watch | CTP | Adams, Columbia, Cumberland, Dauphin, Franklin, Juniata and 12 more | 21 hr |
| Sep 4, 11:35 PM EDT | Special Weather Statement | CTP | Adams, Dauphin, Lebanon, York | 70 min |
| Sep 5, 12:38 AM EDT | Special Weather Statement | CTP | York | 67 min |
| Sep 5, 12:45 AM EDT | Areal Flood Advisory | CTP | Columbia, Dauphin, Montour, Northumberland, Schuylkill | 4 hr |
| Sep 5, 1:41 AM EDT | Flash Flood Warning | CTP | Columbia, Dauphin, Lebanon, Lycoming, Montour, Northumberland and 2 more | 4 hr |
| Sep 5, 6:16 PM EDT | Special Weather Statement | CTP | Lancaster | 29 min |
Nearby
Flash Flood Warnings in Pennsylvania, 2011Every flash 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.