Flash Flood Warning 32, NWS State College, PA

Issued

Aug 20, 1999, 10:18 AM EDT (14:18 UTC)

Expired

Aug 20, 1999, 2:15 PM EDT

In force

4 hr

Issued by

NWS State College, PA

Area

Whole counties; the outline is the Mesonet’s reconstruction

County Montour County, PA

000 
TTAA00 KCTP 201424
FFWCTP
PAC097-109-119-093-201815-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1018 AM EDT FRI AUG 20 1999

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SNYDER COUNTY.
  UNION COUNTY.
  NORTHUMBERLAND COUNTY.
  MONTOUR COUNTY

* UNTIL 215 PM EDT.

* AT 1009 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  AN AREA OF THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS AREAS FROM
  SELINSGROVE NORTH TO LEWISBURG AND DANVILLE.  

SLOW MOVING THUNDERSTORMS ARE PRODUCING TORRENTIAL RAINFALL IN THE 
WARNED AREA. 2.6 INCHES OF RAIN WAS REPORTED NEAR DANVILLE AT 1015 
AM. 1.7 INCHES WAS OBSERVED IN SELINSGROVE. SOME ROAD FLOODING WAS 
REPORTED IN LEWISBURG...AND ADDITIONAL HEAVY RAIN WILL MAKE PROBLEMS 
MORE SEVERE.

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

.END/ DUNHAM/ONDREJIK

LAT...LON 4071 7735 4071 7670 4110 7670 4109 7718

NWS State College, PA wrote its last area forecast discussion before this flash flood warning went out at Aug 20, 9:30 AM EDT, 48 minutes earlier.

CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
930 AM EDT FRI AUG 20 1999

DECENT RAIN TOTALS THIS AM IN THE CITY OF BFD...NEARLY 4 INCHES FM
STORM SPOTTERS AND ON THE 88D ESTIMATES BOTH. SHOWERY RAFL W/VERY
LTL THUNDER (BUT STILL LOOKING CONVECTIVE IN NATURE) STRETCHES FM
FINGER LAKES ALL THE WAY TO LWR SUSQ. BEST RAFL THERE IS S OF IPT.
ALL THIS RA LOOKS TO BE MOVG VERY SLOLY TO THE N AND E. SOME DVLPMNT
NOW BACK INTO CENTRAL PA VERY CLOSE TO UNV...AND RIGHT ARND MDT.

MDLS SO DIVERGANT EVEN THE FIRST PDS ARE WIDELY DIFF. YSTDY/S ETA
DID HAVE THE AREA OF PCPN VERY CORRECT YSTDY. THIS IN CONTRAST TO
THINKING YSTDY.  SO...TAKING A LOOK AT M-ETA FOR NEXT FEW HRS...IT
HAS SOMEWHAT OF A HANDLE ON CURR TRENDS...AS IT MOVES THAT PCPN VERY
LTL...BUT DEVELOPS PCPN OV FAR SC PA NR HGR. AS THE M-ETA IS TIED
CLOSELY TO THE ETA...IT ZIPS THE SFC LOW OFF TO THE EAST AND OFF THE
COAST MUCH FASTER...AND PUTS US BACK INTO THE MAINLY DRY ZONE BY
ERLY SAT MORN.

WL TAKE OUT TIMING OF PRECIP FOR MOST PART...AND ADD THUNDER FOR THE
AREAS TO OUR EAST AND SOUTH. TEMPS TO BE LEFT AS IS.

.CTP...NONE.

DANGELO

Flash Flood Warnings in Pennsylvania, 1999Every flash flood warning in 1999

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.