Alert archive / Pennsylvania / Flash Flood Warnings in 2012
Flash Flood Warning 18, NWS State College, PA
NWS State College, PA issued this flash flood warning at Aug 26, 2012, 4:21 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
- Aug 26, 2012, 4:21 PM EDT (20:21 UTC)
- Expired
- Aug 26, 2012, 7:15 PM 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, Franklin County, PA, Perry County, PA
The radar
The State College radar (KCCX), 101 km from the middle of the area, began a volume at 20:23 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 |
|---|---|---|---|
| Aug 26, 5:00 PM EDT | FLASH FLOOD | Shippensburg, PA | ROADS CLOSED IN AND AROUND SHIPPENSBURG |
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 12:00Z, 8.4 hours before the alert went out and 131 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
- 926 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 504 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
597
WGUS51 KCTP 262021
FFWCTP
PAC001-041-055-099-262315-
/O.NEW.KCTP.FF.W.0018.120826T2021Z-120826T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
421 PM EDT SUN AUG 26 2012
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHWESTERN ADAMS COUNTY...
WESTERN CUMBERLAND COUNTY...
NORTHEASTERN FRANKLIN COUNTY...
SOUTHWESTERN PERRY COUNTY...
* UNTIL 715 PM EDT...
* AT 415 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM A THUNDERSTORM NEAR SHIPPENSBURG...MOVING
NORTHWEST AT 15 MPH. PARTS OF SOUTHWEST CUMBERLAND COUNTY HAVE
SEEN WELL OVER 2 INCHES OF RAIN IN THE PAST HOUR...AND AN
ADDITIONAL ONE TO TWO INCHES OF RAIN ARE LIKELY THROUGH 530 PM.
FLASH FLOODING IS IMMINENT.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
SHIPPENSBURG... NEWBURG...WALNUT BOTTOM...CASHTOWN AND WALNUT
BOTTOM.
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!
&&
LAT...LON 4020 7762 4028 7756 4027 7748 4026 7742
4024 7736 4017 7731 4003 7728 3985 7725
3978 7747
$$
FORECASTER: DEVOIR3 follow-up statements
785
WGUS71 KCTP 262028
FFSCTP
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
428 PM EDT SUN AUG 26 2012
PAC001-041-055-099-262315-
/O.CON.KCTP.FF.W.0018.000000T0000Z-120826T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ADAMS PA-CUMBERLAND PA-FRANKLIN PA-PERRY PA-
428 PM EDT SUN AUG 26 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM EDT FOR
SOUTHWESTERN PERRY...NORTHEASTERN FRANKLIN...WESTERN CUMBERLAND AND
NORTHWESTERN ADAMS COUNTIES...
AT 427 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM A THUNDERSTORM NEAR SHIPPENSBURG...MOVING
NORTHWEST AT 15 MPH. PARTS OF SOUTHWEST CUMBERLAND COUNTY HAVE
SEEN WELL OVER 2 INCHES OF RAIN IN THE PAST HOUR...AND AN
ADDITIONAL ONE TO TWO INCHES OF RAIN ARE LIKELY THROUGH 530 PM.
FLASH FLOODING IS IMMINENT.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
SHIPPENSBURG...NEWBURG...WALNUT BOTTOM AND CASHTOWN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.
&&
LAT...LON 4020 7762 4028 7756 4027 7748 4026 7742
4024 7736 4017 7731 4003 7728 3985 7725
3978 7747
$$
FORECASTER: DEVOIR876
WGUS71 KCTP 262143
FFSCTP
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
543 PM EDT SUN AUG 26 2012
PAC001-041-055-099-262315-
/O.CON.KCTP.FF.W.0018.000000T0000Z-120826T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ADAMS PA-CUMBERLAND PA-FRANKLIN PA-PERRY PA-
543 PM EDT SUN AUG 26 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM EDT FOR
SOUTHWESTERN PERRY...NORTHEASTERN FRANKLIN...WESTERN CUMBERLAND AND
NORTHWESTERN ADAMS COUNTIES...
AT 541 PM EDT...DOPPLER RADAR INDICATES A BREAK IN THE RAINFALL OVER
THE WARNING AREA. HOWEVER...ADDITIONAL RAINFALL IN NORTHERN MARYLAND
IS EXPECTED TO TRACK INTO THE WARNING AREA AFTER 630 PM.
FLASH FLOODING HAS ALREADY OCCURRED IN AND AROUND SHIPPENSBURG WITH
LAW ENFORCEMENT REPORTING ROADS CLOSED DUE TO FLOODING.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
SHIPPENSBURG...NEWBURG AND WALNUT BOTTOM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.
&&
LAT...LON 4020 7762 4028 7756 4027 7748 4026 7742
4024 7736 4017 7731 4003 7728 3985 7725
3978 7747
$$
FORECASTER: DEVOIR248
WGUS71 KCTP 262221
FFSCTP
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
621 PM EDT SUN AUG 26 2012
PAC001-041-055-099-262230-
/O.CAN.KCTP.FF.W.0018.000000T0000Z-120826T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ADAMS PA-CUMBERLAND PA-FRANKLIN PA-PERRY PA-
621 PM EDT SUN AUG 26 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHWESTERN
PERRY...NORTHEASTERN FRANKLIN...WESTERN CUMBERLAND AND NORTHWESTERN
ADAMS COUNTIES...
RAINFALL IS DIMINISHING AND THE WATERS FROM THE EARLIER HEAVY RAINS
ARE BEGINNING TO RECEDE. WHILE MINOR FLOODING WILL CONTINUE...FLOOD
WATERS SHOULD NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR
PROPERTY. THEREFORE...THE FLASH FLOOD WARNING HAS BEEN CANCELLED.
LAT...LON 4020 7762 4028 7756 4027 7748 4026 7742
4024 7736 4017 7731 4003 7728 3985 7725
3978 7747
$$
FORECASTER: DEVOIRThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 2:01 PM EDT | Tornado Warning | CTP | Franklin, Fulton | 29 min |
| Aug 26, 2:30 PM EDT | Tornado Warning | CTP | Franklin, Huntingdon | 17 min |
| Aug 26, 2:51 PM EDT | Special Weather Statement | CTP | Franklin | 24 min |
| Aug 26, 3:19 PM EDT | Flash Flood Watch | CTP | Adams, Cumberland, Dauphin, Franklin, Fulton, Lancaster and 3 more | 4 hr |
| Aug 26, 3:36 PM EDT | Areal Flood Advisory | CTP | Adams, Cumberland, Franklin | 3 hr |
| Aug 26, 3:46 PM EDT | Flash Flood Warning | CTP | York | 3 hr |
| Aug 26, 4:03 PM EDT | Special Weather Statement | CTP | Cumberland, Perry | 57 min |
| Aug 26, 4:23 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Juniata, Perry | 67 min |
| Aug 26, 4:47 PM EDT | Special Weather Statement | CTP | Dauphin, Lebanon | 43 min |
| Aug 26, 5:22 PM EDT | Special Weather Statement | CTP | Centre, Clinton | 38 min |
| Aug 26, 5:29 PM EDT | Special Weather Statement | CTP | Northumberland, Snyder, Union | 31 min |
| Aug 26, 5:42 PM EDT | Special Weather Statement | CTP | Clinton, Lycoming | 33 min |
| Aug 26, 6:17 PM EDT | Special Weather Statement | CTP | Lycoming | 73 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.