Alert archive / Pennsylvania / Flash Flood Warnings in 1997

Flash Flood Warning 57, NWS State College, PA

November 8, 1997Clearfield County, Pennsylvania

NWS State College, PA issued this flash flood warning at Nov 8, 1997, 8:24 PM EST for Clearfield County, Pennsylvania. It was in force for 6 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
Nov 8, 1997, 8:24 PM EST (01:24 UTC)
Expired
Nov 9, 1997, 2:30 AM EST
In force
6 hr
Issued by
NWS State College, PA
Area
Whole counties

County Clearfield County, PA

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 1.4 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 00:00Z on 1997-11-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 1997-11-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 92 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
551 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
92 m²/s²
0-3 km storm-relative helicity
124 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 
TTAA00 KCTP 090125
FFWCTP
PAC033-090730-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
824 PM EST SAT NOV 8 1997
 
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL 230 AM EST
FOR PEOPLE IN THE FOLLOWING LOCATIONS......
 
IN  PENNSYLVANIA
 
   ...SOUTHERN CLEARFIELD COUNTY
 
WHILE MOST OF THE RAIN HAS ENDED...AREA STREAMS ACROSS SOUTHERN
CLEARFIELD COUNTY REMAIN VERY HIGH. RUNOFF FROM NORTHERN CAMBRIA COUNTY
HAS KEPTED NORTHWARD FLOWING STREAMS ACROSS SOUTHERN CLEARFIELD COUNTY
ABOVE FLOOD LEVELS.
 
WATER COVERS MANY ROADS ACROSS THE REGION...ESPECIALLY IN THE
COALPORT AND WESTOVER AREAS.
 
WATER LEVELS WILL REMAIN HIGH WELL INTO THE NIGHT.  DO NOT CROSS FLOODED
AREAS.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
 
MARTIN
 
&

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS State College, PA wrote its last area forecast discussion before this flash flood warning went out at Nov 8, 7:00 PM EST, 1 hour 24 minutes earlier.

Area forecast discussion, Nov 8, 7:00 PM EST, 1 hour 24 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
700 PM EST SAT NOV 8 1997

...ZONE SUGGESTIONS...

PIT/PHL...OK AS IS.

...DISCUSSION...

NOT MUCH CHANGE EXPECTED OVERNIGHT.  SOME CLEARING FROM W TO E
LATE SUNDAY...LIKE TO SEE MORE DOWNWARD MOTION.

SFC LOW NEAR DELMARVA AREA...AND 850 MB LOW FCST TO LIFT N.  MAY
INTENSIFY A LITTLE.

RFC/S...JUST SENT NEW QPS FOR 00Z TO 00Z...CHANGED FCST
SLIGHTLY...WAS THINKING E/W BANDS UP NORTH...BUT NOW THINK N/S
BANDS PSBL...GIVEN ACTION OFF COAST...AND TRACK OF LOW.

WSFO/S...CALL IF SIG. CHANGES.

MARTIN

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 9, 2:30 AM ESTFlash Flood WarningCTPClearfield6 hr
Nov 9, 8:28 AM ESTFlash Flood WarningCTPClearfield5 hr

Nearby

Flash Flood Warnings in Pennsylvania, 1997Every flash flood warning in 1997

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.