Alert archive / Pennsylvania / Flash Flood Warnings in 2007
Flash Flood Warning 21, NWS State College, PA
NWS State College, PA issued this flash flood warning at Jul 29, 2007, 8:41 AM EDT for Lancaster 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 counties it named.
The facts
- Issued
- Jul 29, 2007, 8:41 AM EDT (12:41 UTC)
- Expired
- Jul 29, 2007, 11:15 AM EDT
- In force
- 3 hr
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Lancaster County, PA
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 0.7 hours before the alert went out and 157 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
- 1003 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 792 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS51 KCTP 291243
FFWCTP
PAC071-291515-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
841 AM EDT SUN JUL 29 2007
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS EXTENDED THE
* FLASH FLOOD WARNING FOR...
LANCASTER COUNTY IN SOUTH CENTRAL PENNSYLVANIA...
* UNTIL 1115 AM EDT...
* AT 834 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM THUNDERSTORMS OVER LANCASTER COUNTY.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO AKRON...
COLUMBIA...EAST PETERSBURG...EPHRATA...LANCASTER...LEOLA...
LITITZ...MANHEIM...MILLERSVILLE...MOUNT JOY...NEW HOLLAND AND
WILLOW STREET.
RADAR ESTIMATES SHOW THAT SEVERAL LOCATIONS THROUGHOUT THE COUNTY
HAVE RECEIVED ANYWHERE FROM 2 TO 4 INCHES OF RAINFALL OVER THE LAST
3 HOURS. IN ADDITION...RADAR ESTIMATES OVER THE LAST HOUR HAVE
RANGED FROM 2 TO 3 INCHES ACROSS MARTIC AND CONESTOGA TOWNSHIPS
ALONG THE LOWER MAIN STEM OF THE SUSQUEHANNA RIVER.
LOCALLY HEAVY RAINFALL WILL CONTINUE ACROSS LANCASTER COUNTY FOR AT
LEAST THE NEXT HOUR OR SO.
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 DONT DROWN
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...DONT 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 3995 7645 3973 7623 3988 7600 4016 7593
4032 7615 4024 7643 4010 7658
$$
FORECASTER: STEINBUGL1 follow-up statement
000
WGUS71 KCTP 291516
FFSCTP
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1115 AM EDT SUN JUL 29 2007
PAC071-291525-
LANCASTER PA-
1115 AM EDT SUN JUL 29 2007
...THE FLASH FLOOD WARNING HAS EXPIRED FOR LANCASTER COUNTY...
HEAVY RAIN HAS ENDED AND NO FLOODING PROBLEMS HAVE BEEN REPORTED
THROUGHOUT LANCASTER COUNTY...THEREFORE THE FLASH FLOOD WARNING WAS
ALLOWED TO EXPIRE.
LAT...LON 3995 7645 3973 7623 3988 7600 4016 7593
4032 7615 4024 7643 4010 7658
$$
FORECASTER: STEINBUGLThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 2:33 AM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 27 min |
| Jul 29, 5:52 AM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Jul 29, 8:13 AM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 62 min |
| Jul 29, 12:19 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 56 min |
| Jul 29, 3:23 PM EDT | Severe Thunderstorm Warning | CTP | Mifflin | 44 min |
| Jul 29, 4:05 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 44 min |
| Jul 29, 4:47 PM EDT | Severe Thunderstorm Warning | CTP | Union | 58 min |
| Jul 29, 5:07 PM EDT | Severe Thunderstorm Warning | CTP | Northumberland | 53 min |
| Jul 29, 6:16 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 59 min |
| Jul 29, 6:53 PM EDT | Severe Thunderstorm Warning | CTP | Lebanon | 67 min |
| Jul 29, 7:14 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 46 min |
| Jul 29, 7:51 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin, Perry | 54 min |
Nearby
Flash Flood Warnings in Pennsylvania, 2007Every flash flood warning in 2007
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.