Alert archive / Pennsylvania / Flash Flood Warnings in 2000

Flash Flood Warning 21, NWS Cleveland, OH

August 2, 2000Crawford County, Pennsylvania

NWS Cleveland, OH issued this flash flood warning at Aug 2, 2000, 6:41 PM EDT for Crawford County, Pennsylvania. It was in force for 2 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
Aug 2, 2000, 6:41 PM EDT (22:41 UTC)
Expired
Aug 2, 2000, 8:45 PM EDT
In force
2 hr
Issued by
NWS Cleveland, OH
Area
Whole counties

County Crawford County, PA

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 10.7 hours before the alert went out and 142 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 2000-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 450 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2000-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 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
450 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
685 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.2

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KCLE 022243
FFWCLE
PAC039-030045-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
641 PM EDT WED AUG 2 2000

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

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

* UNTIL 845 PM EDT

* AT 629 PM EDT WEATHER SERVICE RADAR INDICATED
  SEVERAL THUNDERSTORMS MOVING INTO SOUTHERN CRAWFORD COUNTY.
  THESE THUNDERSTORMS WILL PRODUCE FLOODING RAINS IN THE NEXT HOUR.
 
* SOME LOCATIONS AFFECTED INCLUDE...
  COCHRANTON

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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

$$

GARNET

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 12:52 PM EDTSevere Thunderstorm WarningCLEErie53 min
Aug 2, 1:01 PM EDTSevere Thunderstorm WarningCLECrawford59 min
Aug 2, 1:39 PM EDTSevere Thunderstorm WarningCLEErie51 min
Aug 2, 1:56 PM EDTSevere Thunderstorm WarningCLECrawford49 min
Aug 2, 2:51 PM EDTFlash Flood WarningCLECrawford114 min
Aug 2, 4:19 PM EDTTornado WarningCLECrawford41 min
Aug 2, 5:00 PM EDTSevere Thunderstorm WarningCLECrawford45 min

Nearby

Flash Flood Warnings in Pennsylvania, 2000Every flash flood warning in 2000

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.