Flash Flood Warning 46, NWS State College, PA

Issued

Sep 6, 1999, 3:01 PM EDT (19:01 UTC)

Expired

Sep 6, 1999, 6:00 PM EDT

In force

3 hr

Issued by

NWS State College, PA

Area

Whole counties; the outline is the Mesonet’s reconstruction

Counties Bedford County, PA, Cambria County, PA, Somerset County, PA

000 
TTAA00 KCTP 061904
FFWCTP
PAC009-021-055-057-111-062200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
301 PM EDT MON SEP 6 1999

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BEDFORD COUNTY.
  CAMBRIA COUNTY.
  FULTON COUNTY.
  SOMERSET COUNTY.
  FRANKLIN COUNTY.

* UNTIL 600 PM EDT.

* AT 254 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN
  AREA OF SHOWERS AND THUNDERSTORM WITH VERY HEAVY RAINFALL OVER     
  THE AREA.

SLOW MOVING THUNDERSTORMS ARE PRODUCING TORRENTIAL RAINFALL IN THE
WARNED AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH 
FLOODING ALONG STREAMS AND CREEKS.

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.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. NEVER ATTEMPT TO CROSS HIGH WATER IN A VEHICLE OR ON FOOT!

.END/ ONDREJIK/LA CORTE

LAT...LON 4011 7907 3981 7938 3975 7754 4005 7764
          4017 7855 4035 7871 4059 7867

NWS State College, PA wrote its last area forecast discussion before this flash flood warning went out at Sep 6, 2:50 PM EDT, 11 minutes earlier.

CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
250 PM EDT MON SEP 6 1999

A FEW THUNDERSTORMS BEGINNING TO SHOW ROTATION...SO MAY HAVE TO CUT
THIS A LITTLE SHORT.

NOT QUITE THE WASHOUT IT APPEARED IT WOULD BE TODAY...BUT RAIN IS
DEFINITELY ON THE WAY.  DRY SLOT HUNG TOUGH ACROSS THE NORTHERN HALF
OF PA THIS AFTERNOON.  BUT DENNIS REMNANTS TAPPING INTO A DEEP MOIST
TONGUE EXTENDING FROM S PA TO THE CAROLINA COAST.  THIS MOIST TONGUE
WILL SPREAD OVER CENTRAL PA TONIGHT BRINGING CATEGORICAL POPS FOR
MOST.

WITH THE EFFICIENCY OF TROPICAL SYSTEMS FOR PRODUCING RAIN...ADDED
TO UPSLOPE SOUTHEASTERLY FLOW...THE REGION COULD SEE RAINFALL TOTALS
REACH FFG VALUES (2-4 IN 3 HOURS).  WILL EXTEND FLASH FLOOD WATCH
TO INCLUDE ALL OF CENTRAL PA THROUGH TUESDAY MORNING.  FEEL THERE IS
REASONABLE POTENTIAL FOR MOISTURE TO WRAP WESTWARD AROUND THE CENTER
OF CIRCULATION (LIKE CURRENTLY IN THE SOUTHWEST) AS REMNANTS DRIFT
NORTH-NORTHEAST...SO WILL INCLUDE ALL NORTHERN COUNTIES NOW AS WELL.

SYSTEM MOVES INTO SOUTH CENTRAL NY STATE LATE TOMORROW MORNING...
AIDED BY A PUSH FROM A TROUGH MOVING ACROSS THE MIDWEST. CATEGORICAL
RAIN FOR NORTHEASTERN PORTIONS WHILE TAPERING TO SHOWERS ELSEWHERE.
OVERNIGHT SHIFT WILL HAVE TO ADDRESS WHETHER TO EXTEND THE FLASH
FLOOD WATCH IN THE NE TOMORROW.

TROUGH SLOWLY TRAVERSES PA TUE NIGHT INTO WED.  MIGHT BE ABLE TO
SCRAPE UP A 30 POP FOR THOSE PERIODS...BUT WILL LEAVE DRY FOR NOW.

TEMPS ABOVE GUIDANCE TONIGHT AND TOMORROW NIGHT WITH DAYTIME HIGHS
CLOSE TO FAN/FWC.

.CTP...FLASH FLOOD WATCH FOR ALL OF CENTRAL PA THROUGH TUESDAY MORNING.

RXR

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.