Alert archive / Pennsylvania / Flash Flood Warnings in 2000

Flash Flood Warning 29, NWS State College, PA

July 31, 2000Clearfield County, Pennsylvania

NWS State College, PA issued this flash flood warning at Jul 31, 2000, 7:40 PM EDT for Clearfield County, Pennsylvania. It was in force for 110 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 31, 2000, 7:40 PM EDT (23:40 UTC)
Expired
Jul 31, 2000, 9:30 PM EDT
In force
110 min
Issued by
NWS State College, PA
Area
Whole counties

County Clearfield County, PA

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 11.7 hours before the alert went out and 152 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 2000-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 618 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 2000-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 123 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
618 J/kg
Mixed-layer CIN
-50 J/kg
Mixed-layer LCL
869 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
123 m²/s²
0-3 km storm-relative helicity
143 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.4

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KCTP 312340
FFWCTP
PAC033-010130-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
740 PM EDT MON JUL 31 2000

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CLEARFIELD COUNTY.

* UNTIL 930 PM EDT.

* AT 740 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  HEAVY RAIN ACROSS NORTHERN CLEARFIELD COUNTY MOVING NORTHEAST AT 
  25 MPH. 

SLOW MOVING THUNDERSTORMS WILL MOVE NORTH OUT OF THE COUNTY BEFORE 
830 PM. HOWEVER...STREAMS AND CREEKS ARE STILL FLOODING DUE TO 
EARLIER RAINFALL. EMERGENCY MANAGEMENT OFFICIALS REPORT ROAD 
FLOODING IN LAWRENCE TOWNSHIP...WHERE RISING WATER IS THREATENING 
SOME HOMES.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED. MOVE TO
HIGHER GROUND.

$$

JUNG

LAT...LON 4098 7871 4085 7853 4099 7815 4121 7842

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 30, 8:25 PM EDTFlash Flood WarningCTPColumbia3 hr
Jul 31, 1:50 AM EDTFlash Flood WarningCTPColumbia3 hr
Jul 31, 1:58 PM EDTFlash Flood WarningCTPClearfield4 hr
Jul 31, 2:08 PM EDTFlash Flood WarningCTPSomerset3 hr
Jul 31, 3:44 PM EDTFlash Flood WarningCTPMcKean3 hr
Jul 31, 4:40 PM EDTFlash Flood WarningCTPElk3 hr
Jul 31, 6:45 PM EDTFlash Flood WarningCTPMcKean2 hr

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.