Alert archive / Pennsylvania / Flash Flood Warnings in 2006

Flash Flood Warning 49, NWS Cleveland, OH

July 27, 2006Crawford County, Pennsylvania

NWS Cleveland, OH issued this flash flood warning at Jul 27, 2006, 5:54 PM EDT for Crawford County, Pennsylvania. It was in force for 3 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
Jul 27, 2006, 5:54 PM EDT (21:54 UTC)
Expired
Jul 27, 2006, 9:00 PM EDT
In force
3 hr
Issued by
NWS Cleveland, OH
Area
Counties, with a storm outline in the text

County Crawford County, PA

The radar

The Pittsburgh radar (KPBZ), 120 km from the middle of the area, began a volume at 21:56 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
Jul 27, 7:02 PM EDTFLASH FLOOD8 S Meadville, PANUMEORUS ROADS CLOSED ACROSS THE SOUTHERN PART OF THE COUNTY.

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

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 9.9 hours before the alert went out and 133 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, Pittsburgh, PA at 12:00Z on 2006-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1155 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, Pittsburgh, PA at 12:00Z on 2006-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 65 square meters per square second.193958Sfc1 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
1155 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
966 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
65 m²/s²
0-3 km storm-relative helicity
40 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KCLE 272156
FFWCLE
PAC039-280100-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
554 PM EDT THU JUL 27 2006

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CRAWFORD COUNTY IN NORTHWEST PENNSYLVANIA

* UNTIL 900 PM EDT

* AT 554 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
VERY HEAVY RAIN FROM A THUNDERSTORMS OVER THE WARNED AREA. THE 
HEAVIEST RAINFALL WAS OVER THE SOUTHERN PART OF CRAWFORD COUNTY NEAR 
AND EAST OF ATLANTIC WHERE UP TO 2 INCHES RAIN FELL BETWEEN 445 AND 
545 PM. ADDITIONAL THUNDERSTORMS ARE EXPECTED...WITH ANOTHER 1 TO 2 
INCHES POSSIBLE THROUGH 730 PM.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO 
ATLANTIC...COCHRANTON...GENEVA AND HARTSTOWN

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.

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. TURN AROUND...DONT DROWN

LAT...LON 4171 7963 4163 7963 4162 7977 4163 7982
      4149 8000 4149 8041 4150 8042 4150 8051
      4176 8051

$$

MRD
1 follow-up statement
000 
WGUS71 KCLE 272316
FFSCLE

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
716 PM EDT THU JUL 27 2006

PAC039-280100-
CRAWFORD PA-
716 PM EDT THU JUL 27 2006

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 900 PM EDT FOR
SOUTHERN CRAWFORD COUNTY IN NORTHWEST PENNSYLVANIA...

AT 712 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE VERY HEAVY RAIN ACROSS THE AREA. THIS AREA OF HEAVY RAIN 
WAS LOCATED NEAR MEADVILLE...MOVING EAST AT 25 MPH.

LOCAL LAW ENFORCEMENT HAS REPORTED SEVERAL ROADS CLOSED ACROSS 
SOUTHERN CRAWFORD COUNTY. 

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

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. TURN AROUND... DONT DROWN

LAT...LON 4171 7963 4163 7963 4162 7977 4163 7982
      4149 8000 4149 8041 4150 8042 4150 8051
      4176 8051

$$

The office that day

Everything else NWS Cleveland, OH issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 27, 12:41 PM EDTSevere Thunderstorm WarningCLEErie64 min
Jul 27, 12:59 PM EDTSevere Thunderstorm WarningCLECrawford46 min
Jul 27, 1:30 PM EDTFlash Flood WarningCLECrawford3 hr
Jul 27, 2:45 PM EDTFlash Flood WatchCLECrawford, Erie20 hr

Nearby

Flash Flood Warnings in Pennsylvania, 2006Every flash flood warning in 2006

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.