Alert archive / Pennsylvania / Flash Flood Warnings in 2012
Flash Flood Warning 6, NWS State College, PA
NWS State College, PA issued this flash flood warning at May 27, 2012, 10:11 PM EDT for Bedford County, Cambria County, Somerset County, Pennsylvania. It was in force for 2 hr. 2 reports 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
- May 27, 2012, 10:11 PM EDT (02:11 UTC)
- Expired
- May 28, 2012, 12:12 AM EDT
- In force
- 2 hr
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Bedford County, PA, Cambria County, PA, Somerset County, PA
The radar
The State College radar (KCCX), 95 km from the middle of the area, began a volume at 02:11 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 |
|---|---|---|---|
| May 27, 10:30 PM EDT | FLASH FLOOD | Johnstown, PA | 8 ROADWAYS FLOODED...2 ROADS CLOSED...19 BASEMENTS FLOODED |
| May 27, 10:50 PM EDT | FLASH FLOOD | East Conemaugh, PA | NUMEROUS ROADS AND BASEMENTS FLOODED |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 00:00Z, 2.2 hours before the alert went out and 111 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
- 1275 J/kg
- Mixed-layer CIN
- -93 J/kg
- Mixed-layer LCL
- 751 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 96 m²/s²
- Significant tornado parameter
- -0.1
- Supercell composite
- -1.4
The text
As transmitted, in the capitals the NWS used until 2016.
554
WGUS51 KCTP 280211
FFWCTP
PAC009-021-111-280515-
/O.NEW.KCTP.FF.W.0006.120528T0211Z-120528T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1011 PM EDT SUN MAY 27 2012
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTH CENTRAL BEDFORD COUNTY...
SOUTHWESTERN CAMBRIA COUNTY...
NORTHEASTERN SOMERSET COUNTY...
* UNTIL 115 AM EDT...
* AT 1006 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM A THUNDERSTORM OVER NORTH CENTRAL BEDFORD...
NORTHEASTERN SOMERSET AND SOUTHWESTERN CAMBRIA COUNTIES.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WINDBER...
BELMONT...ELIM...JOHNSTOWN AND WESTMONT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
LAT...LON 4042 7896 4032 7859 4029 7853 4018 7871
4030 7905
$$
FORECASTER: KF1 follow-up statement
284
WGUS71 KCTP 280412
FFSCTP
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1212 AM EDT MON MAY 28 2012
PAC009-021-111-280415-
/O.CAN.KCTP.FF.W.0006.000000T0000Z-120528T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BEDFORD PA-CAMBRIA PA-SOMERSET PA-
1212 AM EDT MON MAY 28 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTHEASTERN
SOMERSET...SOUTHWESTERN CAMBRIA AND NORTH CENTRAL BEDFORD COUNTIES...
THE WATERS FROM THE EARLIER HEAVY RAINS ARE RECEDING AND FLOOD WATERS
NO LONGER POSE A THREAT TO LIFE OR PROPERTY. THEREFORE...THE FLASH
FLOOD WARNING HAS BEEN CANCELLED.
LOCATIONS IN THE WARNING INCLUDED BUT WERE NOT LIMITED TO WINDBER...
BELMONT...ELIM...JOHNSTOWN AND WESTMONT.
OVER ONE DOZEN BASEMENTS WERE REPORTED TO BE FLOODED AND 2 ROADS
WERE CLOSED FOR ABOUT AN HOUR LATE SUNDAY EVENING...THROUGHOUT
CONEMAUGH AND RICHLAND TOWNSHIPS ON THE EAST SIDE OF JOHNSTOWN.
LAT...LON 4042 7896 4032 7859 4029 7853 4018 7871
4030 7905
$$
FORECASTER: LAMBERTThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 8:23 PM EDT | Areal Flood Advisory | CTP | Columbia, Montour, Northumberland, Schuylkill | 112 min |
| May 27, 9:09 PM EDT | Flash Flood Warning | CTP | Columbia, Montour, Northumberland | 3 hr |
| May 27, 9:30 PM EDT | Special Weather Statement | CTP | Bedford | 60 min |
| May 27, 9:38 PM EDT | Areal Flood Advisory | CTP | Cambria | 3 hr |
| May 27, 9:56 PM EDT | Flash Flood Watch | CTP | Bedford, Blair, Cambria, Franklin, Fulton, Somerset | 117 min |
| May 27, 10:30 PM EDT | Special Weather Statement | CTP | Somerset | 45 min |
| May 27, 11:14 PM EDT | Special Weather Statement | CTP | Somerset | 46 min |
Nearby
Flash Flood Warnings in Pennsylvania, 2012Every flash flood warning in 2012
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.