Alert archive / Pennsylvania / Flash Flood Warnings in 2013

Flash Flood Warning 2, NWS State College, PA

May 28, 2013McKean County, Warren County, Pennsylvania

NWS State College, PA issued this flash flood warning at May 28, 2013, 10:51 PM EDT for McKean County, Warren County, Pennsylvania. It was in force for 6 hr. 2 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
May 28, 2013, 10:51 PM EDT (02:51 UTC)
Expired
May 29, 2013, 4:45 AM EDT
In force
6 hr
Issued by
NWS State College, PA
Area
Storm-based polygon
Flood severity
None

Counties McKean County, PA, Warren County, PA

The radar

The Buffalo radar (KBUF), 124 km from the middle of the area, began a volume at 02:55 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

TimeReportWhereRemark
May 28, 11:05 PM EDTFLASH FLOOD2 S Sugar Grove, PAJACKSON RUN ROAD FLOODED IN SEVERAL PLACES
May 28, 11:32 PM EDTFLOODBradford, PAREPORTS OF FLOODING ON MAIN STREET... CHATAUQUA PLACE... EAST MAIN STREET AND ELM STREET. 8

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 2.9 hours before the alert went out and 122 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.

Skew-T log-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 00:00Z on 2013-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 147 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 00:00Z on 2013-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 220 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
147 J/kg
Mixed-layer CIN
-51 J/kg
Mixed-layer LCL
758 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
220 m²/s²
0-3 km storm-relative helicity
347 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

561 
WGUS51 KCTP 290251
FFWCTP
PAC083-123-290845-
/O.NEW.KCTP.FF.W.0002.130529T0251Z-130529T0845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1051 PM EDT TUE MAY 28 2013

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN MCKEAN COUNTY...
  WARREN COUNTY...

* UNTIL 445 AM EDT...

* AT 1045 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR
  INDICATED VERY HEAVY RAIN FROM TRAINING THUNDERSTORMS OVER 
  NORTHWESTERN MCKEAN AND WARREN COUNTIES. RADAR ESTIMATED RAINFALL  
  OF 1.5 TO 2.5 INCHES HAS OCCURRED ACROSS NORTHWESTERN WARREN 
  COUNTY BETWEEN 8 PM AND 1045 PM. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BRADFORD...
  WARREN...RUSSELL...YOUNGSVILLE...SPRING CREEK...COLUMBUS...        
  LUDLOW...AND MARSHBURG.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE LIKELY OVERNIGHT 
THROUGHOUT THE WARNED AREA.

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 STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

PLEASE REPORT FLOODING TO THE NATIONAL WEATHER SERVICE IN STATE
COLLEGE THROUGH TWITTER OR FACEBOOK.

&&

LAT...LON 4200 7834 4162 7893 4163 7962 4200 7961

$$

FORECASTER: LAMBERT
4 follow-up statements
850 
WGUS71 KCTP 290414
FFSCTP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1214 AM EDT WED MAY 29 2013

PAC083-123-290845-
/O.CON.KCTP.FF.W.0002.000000T0000Z-130529T0845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCKEAN PA-WARREN PA-
1214 AM EDT WED MAY 29 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 AM EDT FOR
WARREN AND WESTERN MCKEAN COUNTIES...

AT 1207 AM EDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED ONGOING 
FLOODING OF ROADWAYS AND SOME BASEMENTS OVER WARREN AND WESTERN 
MCKEAN COUNTIES.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BRADFORD...
WARREN AND UNIVERSITY OF PITTSBURGH - BRADFORD.

ADDITIONAL AMOUNTS UP TO AN INCH ARE POSSIBLE IN THE WARNED AREA 
THROUGH 100 AM.

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 STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

PLEASE REPORT FLOODING TO THE NATIONAL WEATHER SERVICE IN STATE
COLLEGE THROUGH TWITTER OR FACEBOOK.

&&

LAT...LON 4200 7834 4162 7893 4163 7962 4200 7961

$$

FORECASTER: DEVOIR
925 
WGUS71 KCTP 290513
FFSCTP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
113 AM EDT WED MAY 29 2013

PAC083-123-290845-
/O.CON.KCTP.FF.W.0002.000000T0000Z-130529T0845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCKEAN PA-WARREN PA-
113 AM EDT WED MAY 29 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 AM EDT FOR
WARREN AND WESTERN MCKEAN COUNTIES...

AT 106 AM EDT...DOPPLER RADAR INDICATES SHOWERS RAPIDLY DECREASING 
ACROSS THE WARNING AREA. RAINFALL ESTIMATES OF TWO TO THREE INCHES 
ARE COMMON OVER CENTRAL AND WESTERN WARREN COUNTY WHERE LAW 
ENFORCEMENT HAS RESPONDED TO SEVERAL REPORTS OF FLOODED ROADS AND 
BASEMENTS.  

WHILE THE RAINFALL WILL TAPER OFF BY 130 AM EDT...RUNOFF WILL 
CONTINUE FOR THE NEXT FEW HOURS. THEREFORE THE FLASH FLOOD WARNING 
WILL REMAIN IN EFFECT UNTIL 445 AM EDT.

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 STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

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 TO THE NATIONAL WEATHER SERVICE IN STATE
COLLEGE THROUGH TWITTER OR FACEBOOK.

&&

LAT...LON 4200 7834 4162 7893 4163 7962 4200 7961

$$

FORECASTER: DEVOIR
789 
WGUS71 KCTP 290622
FFSCTP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
222 AM EDT WED MAY 29 2013

PAC083-123-290845-
/O.CON.KCTP.FF.W.0002.000000T0000Z-130529T0845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCKEAN PA-WARREN PA-
222 AM EDT WED MAY 29 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 AM EDT FOR
WARREN AND WESTERN MCKEAN COUNTIES...

AT 214 AM EDT...NATIONAL WEATHER SERVICE RADAR INDICATES HEAVY RAIN 
HAS ENDED OVER THE WARNING AREA. WARREN COUNTY LAW ENFORCEMENT 
REPORTS ONGOING FLOODING COUNTYWIDE WITH SEVERAL ROAD CLOSURES.

RUNOFF FROM THE EARLIER HEAVY RAIN WILL PERSIST THROUGH THE PRE DAWN 
HOURS. THEREFORE THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 
AM. ADDITIONAL ISOLATED SHOWERS ARE NOT EXPECTED TO PRODUCE MORE 
THAN A FEW HUNDRETHS OF AN INCH OVERNIGHT.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT FLOODING TO THE NATIONAL WEATHER SERVICE IN STATE
COLLEGE THROUGH TWITTER OR FACEBOOK.

&&

LAT...LON 4200 7834 4162 7893 4163 7962 4200 7961

$$

FORECASTER: DEVOIR
357 
WGUS71 KCTP 290836
FFSCTP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
436 AM EDT WED MAY 29 2013

PAC083-123-290846-
/O.EXP.KCTP.FF.W.0002.000000T0000Z-130529T0845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCKEAN PA-WARREN PA-
436 AM EDT WED MAY 29 2013

...THE FLASH FLOOD WARNING WILL EXPIRE AT 445 AM EDT FOR WARREN AND
WESTERN MCKEAN COUNTIES...

AT 430 AM EDT...LAW ENFORCEMENT REPORTS THAT THE WATERS FROM THE 
EARLIER HEAVY RAINS ARE RECEDING AND NO LONGER POSE A THREAT TO LIFE 
OR PROPERTY. THEREFORE...THE FLASH FLOOD WARNING WILL BE ALLOWED TO 
EXPIRE AT 445 AM EDT.

LAT...LON 4200 7834 4162 7893 4163 7962 4200 7961

$$

FORECASTER: DEVOIR

The office that day

Everything else NWS State College, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 28, 8:07 PM EDTSevere Thunderstorm WarningCTPWarren53 min
May 28, 8:19 PM EDTTornado WarningCTPWarren56 min
May 28, 9:14 PM EDTSevere Thunderstorm WarningCTPMcKean, Warren61 min
May 28, 9:55 PM EDTTornado WarningCTPMcKean, Warren35 min
May 28, 10:15 PM EDTSevere Thunderstorm WarningCTPElk, McKean, Potter, Warren75 min
May 29, 12:08 AM EDTAreal Flood AdvisoryCTPCameron, Elk, McKean, Potter3 hr
May 29, 5:20 AM EDTDense Fog AdvisoryCTPAdams, Centre, Cumberland, Dauphin, Juniata, Lancaster and 8 more4 hr
May 29, 4:08 PM EDTSpecial Weather StatementCTPMcKean67 min
May 29, 5:25 PM EDTSpecial Weather StatementCTPPotter35 min
May 29, 5:39 PM EDTSpecial Weather StatementCTPWarren36 min

Nearby

Flash Flood Warnings in Pennsylvania, 2013Every flash flood warning in 2013

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.