Alert archive / Pennsylvania / Flash Flood Warnings in 2012
Flash Flood Warning 17, NWS State College, PA
NWS State College, PA issued this flash flood warning at Aug 26, 2012, 3:46 PM EDT for York County, 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
- Aug 26, 2012, 3:46 PM EDT (19:46 UTC)
- Expired
- Aug 26, 2012, 6:45 PM EDT
- In force
- 3 hr
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Flood severity
- None
County York County, PA
The radar
The Sterling radar (KLWX), 113 km from the middle of the area, began a volume at 19:45 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 12:00Z, 7.8 hours before the alert went out and 112 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.
632
WGUS51 KCTP 261946
FFWCTP
PAC133-262245-
/O.NEW.KCTP.FF.W.0017.120826T1946Z-120826T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
346 PM EDT SUN AUG 26 2012
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTH CENTRAL YORK COUNTY...
* UNTIL 645 PM EDT...
* AT 342 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM A THUNDERSTORM OVER SOUTH CENTRAL YORK
COUNTY. RAINFALL IN EXCESS OF 2 INCHES HAS ALREADY OCCURRED NEAR
THE MARYLAND BORDER...WITH AN ADDITIONAL ONE TO TWO INCHES
POSSIBLE OVER THE NEXT ONE TO TWO HOURS. EXCESSIVE RUNOFF FROM THE
ADDITIONAL RAINFALL WILL PRODUCE FLASH FLOODING SHORTLY.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NEW
FREEDOM...SHREWSBURY...GLEN ROCK...SEVEN VALLEYS...DALLASTOWN...
RED LION AND SPRY.
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!
PLEASE REPORT FLOODING...HAIL OR WIND DAMAGE TO THE NATIONAL WEATHER
SERVICE BY CALLING TOLL FREE...1 8 7 7 6 3 3 6 7 7 2.
&&
LAT...LON 3978 7681 3984 7681 3992 7678 3991 7660
3980 7659 3972 7659 3971 7682
$$
FORECASTER: DEVOIR/STEINBUGL2 follow-up statements
452
WGUS71 KCTP 262140
FFSCTP
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
540 PM EDT SUN AUG 26 2012
PAC133-262245-
/O.CON.KCTP.FF.W.0017.000000T0000Z-120826T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
YORK PA-
540 PM EDT SUN AUG 26 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM EDT FOR SOUTH
CENTRAL YORK COUNTY...
AT 538 PM EDT...DOPPLER RADAR ESTIMATES CONTINUES TO INDICATE
SHOWERS OVER THE WARNING AREA...WITH SOME HEAVIER SHOWERS EXPECTED
TO TRACK NORTHWARD FROM MARYLAND DURING THE NEXT HOUR. NO FLOODING
HAS OCCURRED SO FAR...BUT RUNOFF FROM EARLIER AND ADDITIONAL
RAINFALL WILL MAINTAIN THE THREAT OF FLASH FLOODING. THEREFORE THE
FLASH FLOOD WARNING WILL CONTINUE THROUGH 645 PM EDT.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DALLASTOWN...
RED LION AND SPRY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
PLEASE REPORT FLOODING...HAIL OR WIND DAMAGE BY CALLING YOUR LOCAL
LAW ENFORCEMENT OFFICIALS OR BY CALLING THE NATIONAL WEATHER SERVICE
TOLL FREE AT...1 8 7 7 6 3 3 6 7 7 2.
&&
LAT...LON 3978 7681 3984 7681 3992 7678 3991 7660
3980 7659 3972 7659 3971 7682
$$
FORECASTER: DEVOIR906
WGUS71 KCTP 262243
FFSCTP
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
643 PM EDT SUN AUG 26 2012
PAC133-262253-
/O.EXP.KCTP.FF.W.0017.000000T0000Z-120826T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
YORK PA-
643 PM EDT SUN AUG 26 2012
...THE FLASH FLOOD WARNING WILL EXPIRE AT 645 PM EDT FOR SOUTH
CENTRAL YORK COUNTY...
RUNOFF FROM EARLIER HEAVY RAINFALL NO LONGER POSES A THREAT TO LIFE
OR PROPERTY. THEREFORE...THE FLASH FLOOD WARNING WILL BE ALLOWED TO
EXPIRE.
LAT...LON 3978 7681 3984 7681 3992 7678 3991 7660
3980 7659 3972 7659 3971 7682
$$
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, 4:03 PM EDT | Special Weather Statement | CTP | Cumberland, Perry | 57 min |
| Aug 26, 4:21 PM EDT | Flash Flood Warning | CTP | Adams, Cumberland, Franklin, Perry | 3 hr |
| 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.