Flash Flood Warning 40, NWS State College, PA

Issued

Feb 18, 1998, 7:55 AM EST (12:55 UTC)

Expired

Feb 18, 1998, 11:55 AM EST

In force

4 hr

Issued by

NWS State College, PA

Area

Whole counties

County Union County, PA

The State College radar (KCCX), 79 km from the middle of the area, began a volume at 12:58 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 181255
FFWCTP
PAC119-181655-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
755 AM EST WED FEB 18 1998

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL 1155 AM EST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN CENTRAL PENNSYLVANIA

   ...UNION COUNTY
 
REPORTS OUT OF UNION COUNTY INDICATE THAT ROADS AND SMALL CREEKS
CONTINUE TO FLOOD FROM THE HEAVY RAINS THAT FELL LAST NIGHT AND
EARLY THIS MORNING.

THE HEAVY RAIN HAS ENDED...BUT RUNOFF WILL CONTINUE TO CAUSE
FLOODING OF LOW LYING AREAS FOR THE NEXT SEVERAL HOURS.

FLOODING CONTINUES ALONG BUFFALO CREEK AND ON RTE 44 IN GREG
TOWNSHIP IN SPRING GARDENS. WHILE THE HEAVY RAIN HAS ENDED...
SCATTERED SHOWERS ARE EXPECTED TO CONTINUE THROUGHOUT THE DAY. MANY
STREAMS ARE NEAR OR AT BANK FULL AND ANY ADDITIONAL RAIN WILL
ONLY CAUSE FURTHER PROBLEMS.
 
DO NOT DRIVE ACROSS FLOODED ROADS. IT IS DIFFICULT TO JUDGE THE
DEPTH OF THE WATER AND YOUR VEHICLE MAY BE SWEPT AWAY.

LA CORTE
&

NWS State College, PA wrote its last area forecast discussion before this flash flood warning went out at Feb 18, 2:15 AM EST, 5 hours 40 minutes earlier.

CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
215 AM EST WED FEB 18 1998

...SUGGESTIONS...
FFWS ARE CURRENTLY IN EFFECT FOR THE MID-SUSQUEHANNA BUT BEST
FORCING FOR RAIN SHIFTS EAST THROUGH EARLY THIS MORNING SO NO NEED
FOR ANY WATCHES OVER THE EASTERN PART OF OUR CWA. LIKEWISE PIT CAN
LET THE WATCH EXPIRE WITH THIS ZONE ISSUANCE. PRECIP WILL BE RATHER
SPOTTY IN NATURE DURING THE NEXT DAY OR SO...SO SHOWERS WORDING MAY
WORK BETTER THAN RAIN. CURRENT PITZFP AND PHLZFP ARE BOTH GOING
WITH SLIGHTLY LOWER HIS FOR TODAY THAN THE FWCS BUT WITH LOTS OF
CLOUDS AND A FEW SHOWERS THAT LOOKS GOOD.

...DISCUSSION...
88-D LOOPS SHOWING HVY RAIN ACROSS THE MID-SUSQUEHANNA VALLEY
BEGINNING TO DIMINISH. SFC ANALYSIS INDICATES THAT A MESO-LOW
DEVELOPED ALONG THE COASTAL FRONT OVER SE PA...WITH MID 50S DEW PTS
IN ITS WARM SECTOR OVER DELAWARE AND EASTERN MD. THE LOW DEVELOPED
AS MID-LVL UPWARD VVEL OVERAN AN AREA OF LOW-LVL CONVERGENCE
ASSOCIATED WITH THE COASTAL FRONT IN AN AREA OF GOOD MID-LVL
INSTABILITY. 88-D ESTIMATES AND IFLOWS GAGES INDICATE STORM TOTALS
OF JUST OVER 2 INCHES IN THE FFW AREA WITH 3 HOUR TOTALS OF JUST
OVER AN INCH. MODELS INDICATE A TONQUE OF HIER THETA-E AND LOW-LVL
FGEN OVER SE PA PA THIS MORNING PULLING AWAY TO THE EAST BY MID-
DAY. ONCE THAT PULLS ANY THREAT OF HEAVY RAIN WILL BE OVER.

AREAS OF LGT RAIN/SHOWERS WILL PERSIST FOR THE NEXT COUPLE OF DAYS
AS LOTS OF LOW-LVL CYCLONIC FLOW LINGERS BENEATH UPPER TROUGHING
ACROSS CENTRAL PA. WOULD RECOMEND CAT POPS OVER THE WESTERN
CWA...AND LIKELY POPS ACROSS THE EAST. LOOKS LIKE THE EARLIEST CHC
FOR ANY FROZEN PRECIP WONT BE UNTIL AT LEAST THURSDAY NIGHT BASED
ON MODEL SOUNDINGS.

MSE

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.