Flash Flood Warning 140, NWS State College, PA

Issued

Aug 27, 1996, 6:08 PM EDT (22:08 UTC)

Expired

Aug 27, 1996, 8:15 PM EDT

In force

2 hr

Issued by

NWS State College, PA

Area

Whole counties

Counties McKean County, PA, Potter County, PA

The State College radar (KCCX), 97 km from the middle of the area, began a volume at 22:11 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.

000 
TTAA00 KCTP 272208
FFWCTP
PAC083-105-280015-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
608 PM EDT TUE AUG 27 1996
 
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  815 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...S...
 
IN  PENNSYLVANIA
 
   ...NORTHERN MCKEAN COUNTY...WESTERN POTTER COUNTY
 
DOPPLER RADAR IN STATE COLLEGE ESTIMATES 2 TO 3 INCHES OF RAIN HAS
FALLEN OVER THE PAST HOUR OVER EXTREME NORTHEASTERN MCKEAN COUNTY AND
NORTHWESTERN POTTER COUNTY NEAR THE TOWNS OF MYRTLE AND SHINGLEHOUSE.
 
HEAVY RAINS OF AROUND 2 INCHES MAY HAVE FALLEN NEAR AIKEN IN NORTHERN
MCKEAN COUNTY TOO.  THE LINE OF SLOW MOVING THUNDERSTORMS WILL LIKELY
PRODUCE MORE RAIN OVER THIS AREA IN THE NEXT HOUR.
 
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.
GRUMM

NWS State College, PA wrote its last area forecast discussion before this flash flood warning went out at Aug 27, 2:27 PM EDT, 3 hours 41 minutes earlier.

CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
230 PM EDT TUE AUG 27 1996

...ZONE SUGGESTIONS...
...PHL...WUD LOWER POPS UPPER SUSQ ZONES AS FORCING SEEMS TO WANT
TO STAY MAINLY SOUTH OF THIS AREA. UPPER SHORT WAVE SLIDING EAST OF
AREA SHUD MINIMIZE POPS FOR WED.
...PIT...THINK NRN ZONES WILL SEE MINIMUM CHC POPS OVERNIGHT. SRN
ZONES BEST CHC. REST OF ZONES LOOK OK.

...DISCUSSION...
THUNDER FIRING NOW APPARENTLY IN RESPONSE TO LOW LEVEL MOISTURE
CONVERGENCE WHICH IS BEING CONCENTRATED OVER HIGHER ELEVATIONS DUE
TO DIABATIC HEATING AFFECTS. GENERAL CONVECTION CAN BE SEEN
CONCENTRATING FROM VA/WV NORTHEASTWARD INTO SERN PA. LOCALIZED
FLOODING ALREADY UNDERWAY IN YORK CTY PA.

EXPECT MOST ACTIVITY WILL BE DIURNALLY DEPENDANT WITH PRECIP
TENDING TO WIND DOWN AS WE LOSE HEATING AND AS UPPER TROF SWINGS
THRU BY AROUND MIDNIGHT. WEAK WINDS WILL MAKE AREAS VULNERABLE TO
SLOW MOVING CELLS AND LOCALIZED FLOODING. GRIDDS INDICATE NVA AND
DIVERGING FLOW IN LOW LEVELS WED. LOW LEVEL MOISTURE REMAINS KIND
OF HIGH BUT AFTER ERLY CLOUDS...SHUD SEE DRYING SETTING IN FROM
WEST TO EAST AS SFC LOW FORMS AND MOVES OFF SRN NEW ENG COAST.

LA CORTE

Flash Flood Warnings in Pennsylvania, 1996Every flash flood warning in 1996

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; radar from the NEXRAD Level II archive.