Alert archive / Pennsylvania / Flash Flood Warnings in 2011
Flash Flood Warning 40, NWS State College, PA
NWS State College, PA issued this flash flood warning at Sep 7, 2011, 9:33 AM EDT for 4 counties in Pennsylvania. It was in force for 10 hr. 11 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
- Sep 7, 2011, 9:33 AM EDT (13:33 UTC)
- Expired
- Sep 7, 2011, 7:30 PM EDT
- In force
- 10 hr
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Emergency
- Flash flood emergency
- Flood severity
- None
Counties Dauphin County, PA, Lancaster County, PA, Lebanon County, PA, York County, PA
The radar
The State College radar (KCCX), 132 km from the middle of the area, began a volume at 13:37 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 7, 11:33 AM EDT | FLOOD | 1 Se Highspire, PA | ROUTE 230 CLOSED BETWEEN HIGHSPIRE AND MIDDLETOWN DUE TO WATER ON ROADWAY. |
| Sep 7, 11:33 AM EDT | FLASH FLOOD | 1 Se Highspire, PA | ROUTE 230 CLOSED BETWEEN HIGHSPIRE AND MIDDLETOWN DUE TO WATER ON ROADWAY. |
| Sep 7, 11:52 AM EDT | FLASH FLOOD | Marietta, PA | WATER-RELATED ROAD CLOSURES IN E-TOWN...MARIETTA AND COLUMBIA AREAS. |
| Sep 7, 1:13 PM EDT | FLASH FLOOD | Felton, PA | EVACUATIONS ONGOING IN FELTON DUE TO FLOODING. |
| Sep 7, 1:15 PM EDT | FLASH FLOOD | Campbelltown, PA | PONDING OF WATER ON ROADWAYS ACROSS LEBANON COUNTY. |
| Sep 7, 1:15 PM EDT | FLASH FLOOD | Dover, PA | EVACUATIONS ONGOING IN DOVER DUE TO FLOODING. |
| Sep 7, 1:16 PM EDT | FLASH FLOOD | York, PA | NUMEROUS WATER RESCUES REPORTED ACROSS YORK COUNTY. |
| Sep 7, 1:36 PM EDT | FLASH FLOOD | Elizabethtown, PA | CONOY CREEK OUT OF ITS BANKS. NORTH MARKET STREET CLOSED. |
| Sep 7, 1:40 PM EDT | FLASH FLOOD | Weigelstown, PA | ROUTE 74 CLOSED DUE TO FLOODING NEAR WEST MANCHESTER TWP AND DOVER TWP LINE. |
| Sep 7, 3:14 PM EDT | FLOOD | Laurel, PA | A BRIDGE OVER MUDDY CREEK AND NEARBY ROADS ARE FLOODED. |
| Sep 7, 5:00 PM EDT | FLOOD | York, PA | I-83 FLOODED AND CLOSED AT YORK |
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, 1.6 hours before the alert went out and 137 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
- 1 J/kg
- Mixed-layer CIN
- -270 J/kg
- Mixed-layer LCL
- 448 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 154 m²/s²
- 0-3 km storm-relative helicity
- 184 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
286
WGUS51 KCTP 071333
FFWCTP
PAC043-071-075-133-071730-
/O.NEW.KCTP.FF.W.0040.110907T1333Z-110907T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
933 AM EDT WED SEP 7 2011
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A
* FLASH FLOOD WARNING FOR...
DAUPHIN COUNTY...
NORTHWESTERN LANCASTER COUNTY...
WESTERN LEBANON COUNTY...
YORK COUNTY...
* UNTIL 130 PM EDT...
* AT 924 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATES
AND RAIN GAGE REPORTS INDICATED VERY HEAVY RAIN FROM A LINE
THUNDERSTORMS OVER DAUPHIN AND YORK COUNTIES. THE HEAVY RAIN IS
EXPECTED TO SPREAD INTO THE ADJACENT AREAS OF LEBANON AND
LANCASTER COUNTIES THROUGH THE MORNING. THESE THUNDERSTORMS ARE
MOVING ALONG THE SAME PATH AS PREVIOUS STORMS THIS MORNING.
ADDITIONAL STORMS WILL BE DEVELOPING AND MOVING IN FROM THE SOUTH
AS WELL.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
DALLASTOWN...HANOVER...PARKVILLE...RED LION...SPRY...WEIGELSTOWN...
YORK...COLUMBIA...ELIZABETHTOWN...MOUNT JOY...ANNVILLE...LEBANON...
PALMYRA...COLONIAL PARK...HARRISBURG...HERSHEY...HUMMELSTOWN...
LINGLESTOWN...MIDDLETOWN...PROGRESS AND STEELTON.
ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE
WARNED AREA THROUGH THE MORNING. ANY ADDITIONAL RAIN WILL ONLY
WORSEN THE FLOODING.
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!
MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO
CROSS WATER COVERED BRIDGES...DIPS...OR LOW WATER CROSSINGS. TO
ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
&&
LAT...LON 3983 7700 3986 7695 3989 7699 3992 7697
4016 7695 4016 7691 4020 7693 4022 7690
4022 7686 4028 7692 4061 7688 4066 7670
4049 7643 3971 7637 3972 7700
$$
FORECASTER: DANGELO2 follow-up statements
532
WGUS71 KCTP 071634
FFSCTP
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1234 PM EDT WED SEP 7 2011
PAC043-071-075-133-071730-
/O.CON.KCTP.FF.W.0040.000000T0000Z-110907T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DAUPHIN PA-LANCASTER PA-LEBANON PA-YORK PA-
1234 PM EDT WED SEP 7 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 130 PM EDT FOR
YORK...WESTERN LEBANON...NORTHWESTERN LANCASTER AND DAUPHIN
COUNTIES...
AT 1221 PM EDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLOODING
ALREADY OCCURRING OVER DAUPHIN...NORTHWESTERN LANCASTER...WESTERN
LEBANON AND YORK COUNTIES. THUNDERSTORMS HAVE ALREADY PRODUCED 2 TO
3 INCHES OF RAIN THIS MORNING...WITH PREVIOUS DAYS TOTALS ADDING UP
TO ALMOST 6 INCHES IN MANY LOCATION IN AND NEAR HARRISBURG AND
YORK.
A LINE OF THUNDERSTORMS WITH TORRENTIAL DOWNPOURS OF A TROPICAL
NATURE EXTENDS ALL THE WAY FROM SOUTHERN VIRGINIA INTO THE LOCAL
AREA.
THE THUNDERSTORMS IN THE LINE ARE MOVING TO THE NORTH...RIGHT ALONG
THE SAME PATHWAY AS THE STORMS BEFORE. THIS WILL CREATE EXTREMELY
HEAVY RAINFALL...AND CAUSE A POTENTIALLY DEADLY SITUATION. ACT NOW
TO PROTECT PROPERTY IN LOW-LYING AREAS. NEAR RECORD FLOODING IS
POSSIBLE ALONG MANY SMALL CREEKS...STREAMS AND IN URBAN AREAS.
FLOOD WATERS MAY RISE HIGHER THAN LOCAL RESIDENTS HAVE EVER SEEN
BEFORE.
ADDITIONAL RAINFALL AMOUNTS OF 2 TO 5 INCHES ARE POSSIBLE THIS
AFTERNOON ARE POSSIBLE IN THE WARNED AREA. HEAVY RAINFALL MAY ALSO
LAST INTO MUCH OF THE NIGHT AND DAYTIME ON THURSDAY. THIS WARNING
MAY BE EXTENDED FOR MUCH LONGER THAN ITS CURRENT EXPIRATION TIME.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DALLASTOWN...
HANOVER...PARKVILLE...RED LION...SPRY...WEIGELSTOWN...YORK...
COLUMBIA...ELIZABETHTOWN...MOUNT JOY...ANNVILLE...LEBANON...
PALMYRA...COLONIAL PARK...HARRISBURG...HERSHEY...HUMMELSTOWN...
LINGLESTOWN...MIDDLETOWN...PROGRESS AND STEELTON.
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. MOST FLOOD DEATHS OCCUR IN
AUTOMOBILES. TURN AROUND DON'T DROWN!
TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
&&
LAT...LON 3983 7700 3986 7695 3989 7699 3992 7697
4016 7695 4016 7691 4020 7693 4022 7690
4022 7686 4028 7692 4061 7688 4066 7670
4049 7643 3971 7637 3972 7700
$$
FORECASTER: DANGELO742
WGUS51 KCTP 071711
FFWCTP
PAC043-071-075-133-072330-
/O.EXT.KCTP.FF.W.0040.000000T0000Z-110907T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
111 PM EDT WED SEP 7 2011
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS EXTENDED THE
* FLASH FLOOD WARNING FOR...
DAUPHIN COUNTY...
NORTHWESTERN LANCASTER COUNTY...
WESTERN LEBANON COUNTY...
YORK COUNTY...
* UNTIL 730 PM EDT...
* AT 1259 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR
ESTIMATES AND RAIN GAGE REPORTS INDICATE TORRENTIAL HEAVY RAIN.
LAW ENFORCEMENT AND PUBLIC REPORTS INDICATE FLASH FLOODING FROM
A STATIONARY LINE OF THUNDERSTORMS. THUNDERSTORMS HAVE ALREADY
PRODUCED 2 TO 3 INCHES OF RAIN THIS MORNING...WITH PREVIOUS DAYS
TOTALS ADDING UP TO ALMOST 6 INCHES IN MANY LOCATION IN AND NEAR
HARRISBURG AND YORK.
THIS IS A FLASH FLOOD EMERGENCY FOR DAUPHIN...YORK...LEBANON AND
LANCASTER COUNTIES. NUMEROUS WATER RESCUES AND EVACUATIONS ARE
TAKING PLACE.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
DALLASTOWN...HANOVER...PARKVILLE...RED LION...SPRY...WEIGELSTOWN...
YORK...COLUMBIA...ELIZABETHTOWN...MOUNT JOY...ANNVILLE...LEBANON...
PALMYRA...COLONIAL PARK...HARRISBURG...HERSHEY...HUMMELSTOWN...
LINGLESTOWN...MIDDLETOWN...PROGRESS AND STEELTON.
A LINE OF THUNDERSTORMS WITH TORRENTIAL DOWNPOURS OF A TROPICAL
NATURE EXTENDS ALL THE WAY FROM SOUTHERN VIRGINIA INTO THE LOCAL
AREA.
THE THUNDERSTORMS IN THE LINE ARE MOVING TO THE NORTH...RIGHT ALONG
THE SAME PATHWAY AS THE STORMS BEFORE. THIS WILL CREATE EXTREMELY
HEAVY RAINFALL...AND CAUSE A POTENTIALLY DEADLY SITUATION. ACT NOW
TO PROTECT PROPERTY IN LOW-LYING AREAS. NEAR RECORD FLOODING IS
POSSIBLE ALONG MANY SMALL CREEKS...STREAMS AND IN URBAN AREAS.
FLOOD WATERS MAY RISE HIGHER THAN LOCAL RESIDENTS HAVE EVER SEEN
BEFORE.
ADDITIONAL RAINFALL AMOUNTS OF 4 TO 6 INCHES ARE POSSIBLE THIS
AFTERNOON ARE POSSIBLE IN THE WARNED AREA. HEAVY RAINFALL MAY ALSO
LAST INTO MUCH OF THE NIGHT AND DAYTIME ON THURSDAY.
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 3983 7700 3986 7695 3989 7699 3992 7697
4016 7695 4016 7691 4020 7693 4022 7690
4022 7686 4028 7692 4061 7688 4066 7670
4049 7643 3971 7637 3972 7700
$$
FORECASTER: DANGELOThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 8:32 PM EDT | Areal Flood Warning | CTP | Franklin, Fulton, Huntingdon, Juniata, Mifflin, Perry | 16 hr |
| Sep 6, 10:20 PM EDT | Areal Flood Warning | CTP | Columbia, Cumberland, Dauphin, Lycoming, Montour, Northumberland and 3 more | 14 hr |
| Sep 6, 11:24 PM EDT | River Flood Warning | CTP | Huntingdon | 22 hr |
| Sep 6, 11:24 PM EDT | River Flood Warning | CTP | Clinton | 31 hr |
| Sep 6, 11:24 PM EDT | River Flood Warning | CTP | Bedford | 18 hr |
| Sep 7, 2:53 AM EDT | Areal Flood Advisory | CTP | Blair, Cambria, Cameron, Centre, Clearfield, Clinton and 8 more | 6 hr |
| Sep 7, 4:49 AM EDT | River Flood Warning | CTP | Lycoming, Sullivan | 41 hr |
| Sep 7, 6:15 AM EDT | Areal Flood Warning | CTP | Centre, Clinton, Lycoming | 6 hr |
| Sep 7, 6:40 AM EDT | Special Weather Statement | CTP | Mifflin | 35 min |
| Sep 7, 8:32 AM EDT | Areal Flood Advisory | CTP | Adams, York | 3 hr |
| Sep 7, 10:23 AM EDT | Flash Flood Warning | CTP | Columbia, Dauphin, Lycoming, Montour, Northumberland, Schuylkill and 4 more | 12 hr |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Huntingdon, Mifflin | 6 hr |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Huntingdon, Juniata, Mifflin | 10 hr |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Juniata, Perry | 10 hr |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Columbia | 4 days |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Columbia, Montour, Northumberland | 4 days |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Dauphin, Juniata, Northumberland, Perry, Union | 4 days |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Cumberland, Dauphin, Juniata, Lancaster, Northumberland, Perry and 2 more | 4 days |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Lancaster, York | 4 days |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Lycoming | 49 hr |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Lycoming, Northumberland, Union | 49 hr |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Northumberland, Union | 44 hr |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Northumberland, Union | 44 hr |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Northumberland, Union | 53 hr |
| Sep 7, 12:09 PM EDT | Areal Flood Warning | CTP | Adams, Centre, Clinton, Columbia, Cumberland, Dauphin and 17 more | 12 hr |
| Sep 7, 1:22 PM EDT | Special Weather Statement | CTP | Lebanon | 23 min |
| Sep 7, 2:17 PM EDT | Special Weather Statement | CTP | Lancaster | 13 min |
| Sep 7, 2:56 PM EDT | Special Weather Statement | CTP | Lancaster | 34 min |
| Sep 7, 3:28 PM EDT | River Flood Warning | CTP | Lancaster, York | 44 hr |
| Sep 7, 4:14 PM EDT | Flash Flood Warning | CTP | Schuylkill | 6 hr |
| Sep 7, 7:00 PM EDT | Flash Flood Warning | CTP | Dauphin, Lancaster, Lebanon, York | 6 hr |
| Sep 7, 7:46 PM EDT | Special Weather Statement | CTP | Schuylkill | 29 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.