Alert archive / Pennsylvania / Flash Flood Warnings in 2011
Flash Flood Warning 79, NWS State College, PA
NWS State College, PA issued this flash flood warning at Sep 28, 2011, 8:18 PM EDT for 4 counties in Pennsylvania. It was in force for 3 hr. 1 report 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
- Sep 28, 2011, 8:18 PM EDT (00:18 UTC)
- Expired
- Sep 28, 2011, 11:15 PM EDT
- In force
- 3 hr
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Columbia County, PA, Dauphin County, PA, Northumberland County, PA, Schuylkill County, PA
The radar
The State College radar (KCCX), 106 km from the middle of the area, began a volume at 00:19 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 |
|---|---|---|---|
| Sep 28, 9:00 PM EDT | FLASH FLOOD | Elysburg, PA | WATER RESCUES...ROADS WASHING OUT...WATER OVER BRIDGES |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 0.3 hours before the alert went out and 200 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
- 1614 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 676 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 111 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 3.0
The text
As transmitted, in the capitals the NWS used until 2016.
947
WGUS51 KCTP 290018
FFWCTP
PAC037-043-097-107-290315-
/O.NEW.KCTP.FF.W.0079.110929T0018Z-110929T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
818 PM EDT WED SEP 28 2011
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTH CENTRAL COLUMBIA COUNTY...
NORTHERN DAUPHIN COUNTY...
WEST CENTRAL SCHUYLKILL COUNTY...
SOUTHERN NORTHUMBERLAND COUNTY...
* UNTIL 1115 PM EDT...
* AT 814 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATES
AND RAIN GAGE REPORTS INDICATED VERY HEAVY RAIN FROM A THUNDERSTORM
OVER NORTHERN DAUPHIN...SOUTH CENTRAL COLUMBIA...SOUTHERN
NORTHUMBERLAND AND WEST CENTRAL SCHUYLKILL COUNTIES. THAT
THUNDERSTORM WILL MOVE THROUGH THE AREA VERY QUICKLY...BUT
FLOODING MAY OCCUR VERY QUICKLY AS WELL...SINCE FLOODING FROM
EARLIER IN THE DAY HAS ONLY RECENTLY RECEDED.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO KULPMONT...
SHAMOKIN AND ELYSBURG AS WELL AS GRATZ AND PILLOW.
ADDITIONAL RAINFALL AMOUNTS OF AT LEAST AN INCH ARE POSSIBLE IN THE
WARNED AREA.
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.
DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.
&&
LAT...LON 4089 7639 4065 7652 4056 7670 4052 7699
4054 7698 4056 7700 4060 7695 4063 7695
4070 7686 4077 7685 4078 7686 4088 7680
$$
FORECASTER: DANGELOThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 28, 8:07 PM EDT | Special Weather Statement | CTP | Columbia | 23 min |
| Sep 28, 8:31 PM EDT | Special Weather Statement | CTP | Franklin | 59 min |
| Sep 28, 9:26 PM EDT | Areal Flood Warning | CTP | Adams, Columbia, Cumberland, Dauphin, Juniata, Lancaster and 11 more | 6 hr |
| Sep 29, 12:41 AM EDT | Special Weather Statement | CTP | Schuylkill | 34 min |
| Sep 29, 3:28 AM EDT | Areal Flood Advisory | CTP | Columbia, Dauphin, Lycoming, Montour, Northumberland, Schuylkill and 3 more | 4 hr |
| Sep 29, 10:20 AM EDT | River Flood Warning | CTP | Cumberland, York | 10 hr |
| Sep 29, 11:07 AM EDT | Special Weather Statement | CTP | Lebanon, York | 53 min |
| Sep 29, 11:30 AM EDT | Areal Flood Advisory | CTP | Columbia, Dauphin, Lebanon, Lycoming, Montour, Northumberland and 2 more | 3 hr |
| Sep 29, 12:20 PM EDT | River Flood Warning | CTP | Columbia | 20 hr |
| Sep 29, 12:20 PM EDT | River Flood Warning | CTP | Columbia, Montour, Northumberland | 20 hr |
| Sep 29, 2:19 PM EDT | Special Weather Statement | CTP | Franklin | 41 min |
| Sep 29, 2:46 PM EDT | Special Weather Statement | CTP | Columbia, Montour | 59 min |
| Sep 29, 2:48 PM EDT | Special Weather Statement | CTP | Cumberland, Dauphin | 42 min |
| Sep 29, 3:20 PM EDT | Areal Flood Advisory | CTP | Columbia, Lycoming, Montour, Northumberland, Sullivan, Tioga | 3 hr |
| Sep 29, 3:41 PM EDT | Special Weather Statement | CTP | Juniata | 64 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.