Flash Flood Warning 142, NWS State College, PA

Issued

Aug 28, 1996, 1:03 AM EDT (05:03 UTC)

Expired

Aug 28, 1996, 3:00 AM EDT

In force

117 min

Issued by

NWS State College, PA

Area

Whole counties

County Elk County, PA

The State College radar (KCCX), 78 km from the middle of the area, began a volume at 05:06 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 280504
FFWCTP
PAC047-280700-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
103 AM EDT WED AUG 28 1996
 
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A
FLOOD WARNING FOR SMALL STREAMS AND POOR DRAINAGE AREAS
EFFECTIVE UNTIL 300 AM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN  PENNSYLVANIA
 
   ...ELK COUNTY
 
DOPPLER WEATHER RADAR CONTINUES TO SHOW A SLOW MOVING THUNDERSTORM
DRIFTING SOUTH ACROSS ELK COUNTY. DOPPLER RADAR ESTIMATES
THAT OVER 2 INCHES OF RAIN HAS FALLEN IN THE PAST HOUR BETWEEN
MIDNIGHT AND 100 AM SOUTH OF ST MARYS.  RAIN GAGE REPORTS ALSO
INDICATE OVER ONE AND THREE QUARTERS INCHES OF RAIN HAS FALLEN IN THIS
AREA.
 
SMALL STREAMS AND POOR DRAINAGE AREAS WILL BE ESPECIALLY SUSCEPTABLE FOR
FLOODING AS THE STORM MOVES OVERHEAD.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF 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.
 
JUNG

NWS State College, PA wrote its last area forecast discussion before this flash flood warning went out at Aug 27, 8:41 PM EDT, 4 hours 22 minutes earlier.

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

RADAR SHOWS CONVECTIVE ACTIVITY ACROSS NORTHERN PENNSYLVANIA AND
IN THE SOUTHERN MOUNTAINS DIMINISHING.  THE SURFACE COLD FRONT
APPEARS TO BE HUNG UP CLOSE TO THE NY BORDER.  THE FRONT HAS
SERVED AS A BNDRY FOR THE CONVECTION IN THE NORTH.  A RIDGE OF LL
HIGH THETA-E AIR WAS THE APPROXIMATE LOCATION OF THE
THUNDERSTORMS OVER THE SOUTHERN MOUNTAINS.

BASED ON WEAK FLOW...LOTS LOW LEVEL MOISTURE...FOG WILL ONCE
AGAIN FORM IN MANY VALLEY LOCATIONS.  AFTER MIDNIGHT MOST SHWR
ACTIVITY SHUD BE OVER.

WEDNESDAY LOOKS LIKE ANOTHER WARM DAY WITH THE CHANCE FOR
AFTERNOON CONVECTION FOCUSED OVER THE CENTER OF THE STATE. BOTH
THE ETA AND MESO ETA SHOW A NOSE OF HIGH THETA-E AIR POISED FROM
THE LAUREL HIGHLANDS TOWARD WILLIAMSPORT AND POINTS NE.  A LONG
WITH THIS AREA OF LOW LEVEL MOIST AIR THE MESO POSITIONS AN
INVERTED TROF ACROSS THE REGION.  HOWEVER...THE CIRCULATION
AROUND THE SFC CYCLONE TO OUR EAST FCST TO ZIP UP THE COAST MAY
LIMIT LL MOISTURE AND PROVIDE LARGER SCALE DESCENT ABV THE LL
ASCENT ALONG THE INVERTED TROF...WHICH MAY LIMIT THE CONVECTIVE
ACTIVITY.

HIGH PRESSURE BUILDS OVER THE LAKES AS THE UPPER LEVEL HTS RISE
LATE WED INTO THURS.  NWLY FLOW MOVES OVER THE REGION...THIS
MIGHT DRY US OUT A BIT.  HOWEVER...DIFFLUENT THICKNESS PATTERN
UPSTREAM AND NWLY FLOW MAY FAVOR MORE UNSETTLED WEATHER.

WOULD RECOMDMEND FOG IN ZONES MANY LOCATIONS AND ANY MENTION OF
AFTN TSTM WED SHOULD BE FOCUSED OVER CNTRL PART OF STATE.  WE
REFLECTED THIS IN THE TAFS.

OUR THANKS TO PIT FOR RAINFALL ESTIMATES THIS EVENING.

GRUMM/FITZGERALD

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.