Flash Flood Warning 53, NWS State College, PA

Issued

Mar 21, 1998, 11:42 AM EST (16:42 UTC)

Expired

Mar 21, 1998, 5:45 PM EST

In force

6 hr

Issued by

NWS State College, PA

Area

Whole counties

County Franklin County, PA

The Sterling radar (KLWX), 108 km from the middle of the area, began a volume at 16:41 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 211648
FFWCTP
PAC055-212245-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1142 AM EST SAT MAR 21 1998
 
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL 545 PM EST FOR PEOPLE IN THE
FOLLOWING LOCATIONS......
 
IN  PENNSYLVANIA
 
   ...FRANKLIN COUNTY
 
AT 1130 AM...FRANKLIN COUNTY EMERGENCY MANAGEMENT OFFICIALS REPORT THAT
THE CONOCOCHEAGUE CREEK NORTH OF CHAMBERSBURG IS OUT OF ITS BANKS.
 
HEAVY RAIN OF BETWEEN 1  AND 2 INCHES WHICH FELL OVERNIGHT CONTINUES TO
CAUSE FLOODING ALONG THE CONOCOCHEAGUE CREEK NORTH OF CHAMBERSBURG.
ADDITIONAL RISES OF A FOOT OR SO CAN BE EXPECTED THIS AFTERNOON...BEFORE
WATERS START TO RECEEDE BY EVENING.
 
VOLUNTARY EVACUATIONS OF THE MICKY'S INN TRAILER PARK AND THE RED BRIDGE
TRAILER PARK ARE UNDERWAY AS OF 1130 AM.
 
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.
 
&
 
JUNG

NWS State College, PA wrote its last area forecast discussion before this flash flood warning went out at Mar 21, 9:55 AM EST, 1 hour 47 minutes earlier.

CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
955 AM EST SAT MAR 21 1998

...SUGGESTIONS...

...ALREADY COORD WITH PIT AND PHL VIA TELCO...

...DISCUSSION...

STILL A DIFFICULT FORECAST CALL THIS MORNING.  PRECIPITATION HAS
SIGNIFICANTLY TAPERED OFF THIS MORNING AS LARGE DRY SLOT HAS WRAPPED
INTO THE REGION.  UPPER LEVEL COOLING IS RAPIDLY CHANGING PCPN OVER
TO SNOW FROM THE WEST THIS MORNING...NAMELY IN THE LAURELS AND SUCH.

FIRST...THE FLOOD WATCHES.  IT LOOKS LIKE WE WILL HAVE TO EXTEND A
FEW OF THE FLOOD WARNINGS INTO THE AFTERNOON FOR THE LOWER SUSQ
COUNTIES.  HOWEVER...THIS IS DUE TO EXISTING FLOODING AND NOT
ADDITIONAL PROBLEMS.  THINK FLOOD WATCHES CAN BE DROPPED.

NOW THE SNOW AND WINTER STORM WARNINGS.  ATTM...RADAR AND SURFACE
OBS WOULD NOT SUPPORT ANY TYPE OF WARNING SNOW IN THE SOUTEHRN TWO
THIRDS OF THE CWA.  HATE TO MAKE DRASTIC CHANGES TO THE ZONES ATTM
FROM THE MID SHIFT...BUT THE SOUTHERN THIRD OF THE CWA WILL HAVE TO
BE CHANGED.

GOOD LOW LEVEL JET...COUPLED WITH NEGATIVELY TILTED UPPER LEVEL TROF
AND DEVELOPING COASTAL LOW WILL LIKELY WRAP SIGNIFICANT PCPN BACK
INTO THE NORTHERN THIRD OF THE CWA (IPT...UNV NORTH) THIS
AFTERNOON.  THEN EXPECT BAND OF SNOW TO PIVOT NE/SW...STILL GIVING
THE POTENTIAL FOR HEAVY SNOW IN THE NROTH AND NORTHEAST CWA.

AGREE TO ADJUST SNOW AMOUNTS DOWN FOR CENTRAL MTS AREA...BUT WILL
LEAVE AMOUNTS IN THE NORTH INTACT AWAITING NEW MODEL GUIDANCE.  FOR
THE SOUTH (AS PER COORD WITH PIT)...WILL DROP WINTER STORM WARNINGS
TODAY.

JUNG

Flash Flood Warnings in Pennsylvania, 1998Every flash flood warning in 1998

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.