Alert archive / Pennsylvania / Flash Flood Warnings in 2011
Flash Flood Warning 41, NWS State College, PA
NWS State College, PA issued this flash flood warning at Sep 7, 2011, 10:23 AM EDT for 10 counties in Pennsylvania. It was in force for 12 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 7, 2011, 10:23 AM EDT (14:23 UTC)
- Expired
- Sep 7, 2011, 10:15 PM EDT
- In force
- 12 hr
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Emergency
- Flash flood emergency
- Flood severity
- None
Counties Columbia County, PA, Dauphin County, PA, Lycoming County, PA, Montour County, PA, Northumberland County, PA, Schuylkill County, PA, Snyder County, PA, Sullivan County, PA, Tioga County, PA, Union County, PA
The radar
The State College radar (KCCX), 117 km from the middle of the area, began a volume at 14:24 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, 10:28 AM EDT | FLOOD | Dushore, PA | SIGNIFICANT FLOODING IS OCCURING IN DUSHORE. |
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, 2.4 hours before the alert went out and 257 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.
283
WGUS51 KCTP 071423
FFWCTP
PAC037-043-081-093-097-107-109-113-117-119-072015-
/O.NEW.KCTP.FF.W.0041.110907T1423Z-110907T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1023 AM EDT WED SEP 7 2011
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A
* FLASH FLOOD WARNING FOR...
COLUMBIA COUNTY...
NORTHERN DAUPHIN COUNTY...
MONTOUR COUNTY...
WESTERN SCHUYLKILL COUNTY...
EASTERN SNYDER COUNTY...
SULLIVAN COUNTY...
EASTERN TIOGA COUNTY...
EASTERN UNION COUNTY...
NORTHUMBERLAND COUNTY...
EASTERN LYCOMING COUNTY...
* UNTIL 415 PM EDT...
* AT 1012 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR
ESTIMATES AND RAIN GAGE REPORTS INDICATED VERY HEAVY RAIN FROM A
LONG BAND OF THUNDERSTORMS OVER MOST OF THE WARNED AREA. THE
THUNDERSTORMS IN THE LINE ARE MOVING TO THE NORTH...RIGHT ALONG
THE SAME PATHWAY. THIS WILL CREATE EXTREMELY HEAVY RAINFALL...
AND CAUSE A POTENTIALLY DEADLY SITUATION.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DANVILLE...
SELINSGROVE...ASHLAND...MANSFIELD...KULPMONT...MILTON...MOUNT
CARMEL...NORTHUMBERLAND...SHAMOKIN...SUNBURY...BERWICK...
BLOOMSBURG...LEWISBURG...MONTOURSVILLE AND WILLIAMSPORT.
ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 ARE POSSIBLE IN THE WARNED
AREA THROUGH THE AFTERNOON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.
IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW INCHES OF
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.
&&
LAT...LON 4199 7692 4160 7687 4154 7621 4121 7632
4114 7627 4114 7622 4101 7622 4049 7641
4066 7669 4057 7697 4064 7694 4064 7698
4201 7725
$$
FORECASTER: DANGELO2 follow-up statements
692
WGUS51 KCTP 071939
FFWCTP
PAC037-043-081-093-097-107-109-113-117-119-080215-
/O.EXT.KCTP.FF.W.0041.000000T0000Z-110908T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
339 PM EDT WED SEP 7 2011
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS EXTENDED THE
* FLASH FLOOD WARNING FOR...
COLUMBIA COUNTY...
NORTHWESTERN DAUPHIN COUNTY...
MONTOUR COUNTY...
WESTERN SCHUYLKILL COUNTY...
EASTERN SNYDER COUNTY...
SULLIVAN COUNTY...
EASTERN TIOGA COUNTY...
EASTERN UNION COUNTY...
NORTHUMBERLAND COUNTY...
EASTERN LYCOMING COUNTY...
* UNTIL 1015 PM EDT...
* AT 325 PM EDT...RAIN GAGE REPORTS INDICATED A LARGE AREA OF VERY
HEAVY RAIN AND A FEW EMBEDDED THUNDERSTORMS CONTINUING TO TRAIN
NORTH ACROSS THE SUSQUEHANNA VALLEY AND ADJACENT NORTH CENTRAL...
AND EAST CENTRAL MOUNTAINS.
THIS IS A FLASH FLOOD EMERGENCY FOR THE WARNED AREA. NUMEROUS
ROADS ARE CLOSED...AND MANY WATER RESCUES AND EVACUATIONS ARE
TAKING PLACE.
RAINFALL RATES OF ONE HALF INCH...TO ONE INCH PER HOUR WILL
CONTINUE INTO EARLY THIS EVENING NEAR...AND TO THE EAST OF A
LINE FROM MANSFIELD...TO MUNCY...SHAMOKIN AND PINE GROVE. LESSER
RAINFALL RATES OF ONE QUARTER...TO ONE HALF OF AN INCH WILL
PERSIST FURTHER TO THE WEST.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DANVILLE...
SELINSGROVE...ASHLAND...MANSFIELD...KULPMONT...MILTON...MOUNT
CARMEL...NORTHUMBERLAND...SHAMOKIN...SUNBURY...BERWICK...
BLOOMSBURG...LEWISBURG...MONTOURSVILLE AND WILLIAMSPORT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH 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. FIND ALTERNATE ROUTES. IT
TAKES ONLY A FEW INCHES OF SWIFTLY FLOWING WATER TO CARRY VEHICLES
AWAY. TURN AROUND...DON'T 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 4199 7692 4160 7687 4154 7621 4121 7632
4114 7627 4114 7622 4101 7622 4049 7641
4066 7669 4057 7697 4064 7694 4064 7698
4201 7725
$$
FORECASTER: LAMBERT540
WGUS71 KCTP 080031
FFSCTP
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
831 PM EDT WED SEP 7 2011
PAC037-043-081-093-097-107-109-113-117-119-080215-
/O.CON.KCTP.FF.W.0041.000000T0000Z-110908T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COLUMBIA PA-DAUPHIN PA-MONTOUR PA-SCHUYLKILL PA-SNYDER PA-
SULLIVAN PA-TIOGA PA-UNION PA-NORTHUMBERLAND PA-LYCOMING PA-
831 PM EDT WED SEP 7 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT FOR
EASTERN LYCOMING...NORTHUMBERLAND...EASTERN UNION...EASTERN TIOGA...
SULLIVAN...EASTERN SNYDER...WESTERN SCHUYLKILL...MONTOUR...
NORTHWESTERN DAUPHIN AND COLUMBIA COUNTIES...
THIS IS A FLASH FLOOD EMERGENCY FOR THE WARNED AREA. NUMEROUS
ROADS ARE CLOSED...AND MANY WATER RESCUES AND EVACUATIONS HAVE
TAKEN PLACE.
AT 820 PM...DOPPLER RADAR SHOWED A LARGE AREA OF HEAVY SHOWERS AND
EMBEDDED THUNDERSTORMS MOVING NORTH ACROSS THE SUSQUEHANNA VALLEY
AND ADJACENT NORTHERN MOUNTAINS. HEAVY RAINFALL RATES OF BETWEEN ONE
HALF OF AN INCH...AND ONE INCH PER HOUR WILL BE OCCURRING THROUGH
LATE THIS EVENING.
ADDITIONAL RAINFALL FROM 830 PM TO 1015 PM COULD BE AS HIGH AS 2.5
INCHES ACROSS THE REGION EAST OF A LINE FROM SHUNK AND BARBOURS...TO
HUGHESVILLE...DANVILLE AND SHAMOKIN. NEW RAINFALL AMOUNTS FURTHER TO
THE WEST WILL BE UNDER 1.5 INCHES THROUGH 1015 PM.
THIS IS AN EXTREMELY DANGEROUS...AND POTENTIALLY LIFE THREATENING
SITUATION...AS MANY STREAMS AND CREEKS ARE ALREADY FLOODING AND
NUMEROUS ROAD CLOSURES AND WATER RESCUES ARE OCCURRING.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DANVILLE...
SELINSGROVE...ASHLAND...MANSFIELD...KULPMONT...MILTON...MOUNT
CARMEL...NORTHUMBERLAND...SHAMOKIN...SUNBURY...BERWICK...
BLOOMSBURG...LEWISBURG...MONTOURSVILLE AND WILLIAMSPORT.
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 DRIVE YOUR
VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER
DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. MOVE TO
HIGHER GROUND.
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 4199 7692 4160 7687 4154 7621 4121 7632
4114 7627 4114 7622 4101 7622 4049 7641
4066 7669 4057 7697 4064 7694 4064 7698
4201 7725
$$
FORECASTER: LAMBERTThe 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, 9:33 AM EDT | Flash Flood Warning | CTP | Dauphin, Lancaster, Lebanon, York | 10 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.