Flash Flood Warning 27, NWS State College, PA

PAZ006-008-009-013-014-161400-

FLOOD WATCH STATEMENT                  ...ISSUED UNDER PHLSPSHAR FOR PEMA...
NATIONAL WEATHER SERVICE HARRISBURG PA
800 AM EDT FRI APR 16 1993

...A FLOOD WATCH IS IN EFFECT FOR THE SOUTH CENTRAL MOUNTAINS THIS MORNING...
   AND FOR THE LOWER AND MIDDLE SUSQUEHANNA VALLEY TODAY...
...FLASH FLOOD WARNINGS ARE IN EFFECT FOR CENTRE AND HUNTINGDON COUNTIES
   UNTIL 10 AM THIS MORNING...

THE SEVERE THUNDERSTORMS WHICH MOVED THROUGH WESTERN PENNSYLVANIA EARLY THIS
MORNING HAVE STALLED OUT IN THE CENTRAL MOUNTAINS. THE POTENTIAL FOR SEVERE
WEATHER HAS DECREASED FOR THE TIME BEING...BUT THE POTENTIAL FOR FLOODING HAS
INCREASED DUE TO HEAVY RAIN THIS MORNING. RAINFALL AMOUNTS OF 1 TO 2 INCHES
HAVE FALLEN ACROSS THE SOUTH CENTRAL AND LAUREL MOUNTAINS THIS MORNING AND
FLOODING HAS BEEN OBSERVED IN CENTRE...HUNTINGDON...CLEARFIELD AND BLAIR
COUNTIES. A RAIN GAUGE AT UNIONVILLE IN CENTRE COUNTY HAS RECORDED 2.28 INCHES
OF RAIN SINCE IT BEGAN FALLING EARLY THIS MORNING.

AT 800 AM HARRISBURG RADAR WAS SHOWING AN AREA OF MODERATE TO HEAVY RAIN
ALONG WITH SOME EMBEDDED THUNDERSTORMS FROM CENTRE AND MIFFLIN COUNTIES DOWN TO
BEDFORD AND FULTON COUNTIES...THEN SOUTH INTO NORTHERN VIRGINIA. INDIVIDUAL
CELLS WERE MOVING NORTHEAST AT 40 TO 50 MPH...WHILE THE AREA WAS SLIDING EAST
AT ONLY 10 TO 20 MPH.

RAIN WILL CONTINUE HEAVY AT TIMES THROUGHOUT THE MORNING ACROSS THE SOUTH
CENTRAL MOUNTAINS...AND WILL GRADUALLY SPREAD ACROSS THE LOWER AND MIDDLE
SUSQUEHANNA VALLEY BETWEEN 8 AND 10 AM. ADDITIONAL FLOODING IS LIKELY IN THE
MOUNTAINS...AND IS A POSSIBILITY IN THE SUSQUEHANNA VALLEY.

DO NOT ATTEMPT TO DRIVE OVER A FLOODED ROAD...YOU COULD BE STRANDED OR TRAPPED.
THE DEPTH OF WATER IS NOT ALWAYS OBVIOUS.

THUNDERSTORMS ARE LIKELY THROUGHOUT THE REMAINDER OF THE DAY...AND THE
POTENTIAL FOR SEVERE WEATHER AND FLOODING EXISTS. STAY TUNED TO NOAA WEATHER
RADIO OR YOUR LOCAL TV AND RADIO STATIONS FOR THE LATEST STATEMENTS AND
POSSIBLE WARNINGS.

RODGERS

PAZ007-008-014-161500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILLIAMSPORT PA
930 AM EDT FRI APR 16 1993

...SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR PORTIONS OF NORTHCENTRAL
PENNSYLVANIA THROUGH THIS AFTERNOON...

...WATCH INFORMATION...
A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR PORTIONS OF
NORTHCENTRAL PENNSYLVANIA UNTIL 200 PM EDT THIS AFTERNOON. THIS
INCLUDES TIOGA...BRADFORD...LYCOMING AND SULLIVAN COUNTIES.  CLINTON
COUNTY IS NOT INCLUDED IN THE SEVERE THUNDERSTORM WATCH.  THE WATCH
ALSO INCLUDES MOST OF EASTERN AND CENTRAL PENNSYLVANIA.

A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR THE
DEVELOPMENT OF SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
SEVERE THUNDERSTORMS CAN CONTAIN STRONG DAMAGING WINDS IN EXCESS OF 55
MPH...LARGE HAIL AND DAMAGING LIGHTNING.

...RADAR INFORMATION...
AT 930 AM EDT NATIONAL WEATHER SERVICE RADAR SHOWED A LARGE AREA OF
SHOWERS AND THUNDERSTORMS WEST OF A LINE FROM BINGHAMTON NEW YORK DOWN
THROUGH WILLIAMSPORT AND THEN TO HAGERSTOWN MARYLAND.  THUNDERSTORMS
WERE MOSTLY ALONG THE LEADING EDGE OF PRECIPITATION.

...THROUGH THIS AFTERNOON...
THE MAJOR PROBLEM FROM THESE THUNDERSTORMS WILL BE THE HEAVY DOWNPOURS
AND STRONG GUSTY WINDS.  HEAVY RAINS THIS MORNING HAVE ALREADY CAUSED
FLOODING PROBLEMS ACROSS THE REGION...ADDITIONAL HEAVY RAIN WILL ONLY
MAKE THE FLOODING WORSE.  ALSO STRONG GUSTY WINDS IN EXCESS OF 58 MPH
ARE POSSIBLE IN ANY THUNDERSTORM...WINDS OF THIS STRENGTH CAN BRING
DOWN TREES AND CAUSE DAMAGE TO ROOFS.

...PRECAUTIONS...
IF YOU ARE IN THE PATH OF THE THUNDERSTORMS...MOVE INDOORS.  STAY AWAY
FROM WINDOWS.  ALSO IF YOU LIVE NEAR CREEKS OR STREAMS IN THE
AREA...BE PREPARED TO MOVE TO HIGHER GROUND IF WATERS START RISING.

STAY TUNED TO NOAA WEATHER RADIO FOR THE LATEST RADAR STATEMENTS...
FLOOD WARNINGS THAT WILL BE BROADCAST UNTIL THE THREAT HAS ENDED.

KJF/HM

PAZ006-008-009-013-161800-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HARRISBURG PA
1150 AM EDT FRI APR 16 1993

...FLOOD WARNINGS FOR SMALL STREAMS IN EFFECT FOR ADAMS...CENTRE...FRANKLIN...
   AND HUNTINGDON COUNTIES UNTIL 430 PM...
...FLOOD WARNINGS FOR SMALL STREAMS IN EFFECT FOR CUMBERLAND...DAUPHIN...AND
   YORK COUNTIES UNTIL 515 PM...
...A FLOOD WATCH IS IN EFFECT FOR THE SOUTH CENTRAL MOUNTAINS...AND
   THE LOWER AND MIDDLE SUSQUEHANNA VALLEY UNTIL 1000 PM...
...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF EASTERN PENNSYLVANIA
   UNTIL 200 PM...

THE STRONG THUNDERSTORMS WHICH MOVED THROUGH CENTRAL PENNSYLVANIA THIS
MORNING HAVE WEAKENED IN INTENSITY...BUT ARE CONTINUING TO PRODUCE MODERATE
TO HEAVY RAIN OVER A WIDE AREA.  THE AREAS OF MODERATE TO HEAVY RAIN EXTENDS
FROM FRANKLIN...PERRY...JUNIATA...AND MIFFLIN COUNTIES EASTWARD ACROSS
THE LOWER AND MIDDLE SUSQUEHANNA VALLEY.
INDIVIDUAL CELLS WERE MOVING NORTHEAST AT 40 TO 50 MPH...WHILE THE AREA
WAS SLIDING EAST AT ONLY 10 TO 20 MPH.

AT 1145 AM  REPORTS WERE RECEIVED OF STREET FLOODING IN HARRISBURG AND CARS
STRANDED IN WATER ON HUMMEL AVENUE IN LEMOYNE...CUMBERLAND COUNTY.  ADDITIONAL
STRANDED VEHICLES WERE REPORTED IN MECHANICSBURG...CUMBERLAND COUNTY.

DO NOT ATTEMPT TO DRIVE OVER A FLOODED ROAD...ONLY 2 FEET OF WATER CAN
SWEEP YOU AND YOUR CAR DONWSTREAM.  KEEP CHILDREN AWAY FROM STREAMS AND
DRAINAGE DITCHES.

THUNDERSTORMS ARE LIKELY THROUGHOUT THE REMAINDER OF THE DAY...AND THE
POTENTIAL FOR SEVERE WEATHER AND FLOODING EXISTS. STAY TUNED TO NOAA WEATHER
RADIO OR YOUR LOCAL TV AND RADIO STATIONS FOR THE LATEST STATEMENTS AND
POSSIBLE WARNINGS.

AHNERT

PAZ007-008-014-161800-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILLIAMSPORT PA
1205 PM EDT FRI APR 16 1993

...SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 PM EDT FOR
ALL OF NORTHCENTRAL PENNSYLVANIA...

...WATCH INFORMATION...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 PM EDT THIS
AFTERNOON.  THIS INCLUDES TIOGA...BRADFORD...LYCOMING AND SULLIVAN
COUNTIES.  CLINTON COUNTY IS NOT INCLUDED IN THE SEVERE THUNDERSTORM
WATCH.  THE WATCH AREA COVERS MOST OF EASTERN AND CENTRAL
PENNSYLVANIA.

A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR THE
DEVELOPMENT OF SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
SEVERE THUNDERSTORMS CAN CONTAIN STRONG DAMAGING WINDS IN EXCESS OF 55
MPH AND/OR LARGE HAIL THREE QUARTERS OF AN INCH OR LARGER IN DIAMETER.

...RADAR INFORMATION...
AT 1200 NOON NATIONAL WEATHER SERVICE RADAR SHOWED A LARGE AREA OF
SHOWERS AND A FEW THUNDERSTORMS...WITH HEAVY RAIN...ACROSS
NORTHCENTRAL PENNSYLVANIA.  THE THUNDERSTORMS WITH THE HEAVIEST RAIN
WERE LOCATED OVER NORTHERN BRADFORD COUNTY NEAR SAYER AND WARREN
CENTER.  OTHER AREAS OF MODERATE TO HEAVY RAIN WERE INDICATED IN THE
MIDDLE SUSQUEHANNA VALLEY AROUND SUNBURY AND DANVILLE.  SINCE 1030 AM
EDT...THERE HAVE BEEN NO FURTHER REPORTS OF LARGE HAIL OR DAMAGING
WINDS ACROSS THE REGION.

THE ENTIRE AREA OF SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT ABOUT
25 MPH...ALTHOUGH INDIVIDUAL THUNDERSTORMS WERE MOVING NORTHEAST AT
HIGHER SPEEDS.

...THROUGH THIS AFTERNOON...
THE IMMEDIATE THREAT FROM THESE THUNDERSTORMS WILL CONTINUE TO BE
HEAVY DOWNPOURS OF RAIN.  HEAVY RAINS THIS MORNING HAVE ALREADY CAUSED
FLOODING PROBLEMS ACROSS THE REGION.  HOWEVER...THERE IS STILL THE
THREAT THAT SOME OF THE THUNDERSTORMS COULD BECOME SEVERE.  A STRONG
COLD FRONT IS EXPECTED TO SWEEP ACROSS THE REGION LATE THIS AFTERNOON
AND MAY TRIGGER ANOTHER ROUND OF THUNDERSTORMS.

PERSONS IN AND CLOSE TO THE WATCH AREA SHOULD REMAIN ALERT AND BE
READY TO SEEK SHELTER IF SEVERE THUNDERSTORMS APPROACH.
REMEMBER...ANY THUNDERSTORM CAN BE DANGEROUS...PRODUCING STRONG AND
GUSTY WINDS...HEAVY RAIN...SMALL HAIL AND LIGHTNING.  IF THUNDERSTORMS
APPROACH...MOVE INDOORS AND STAY AWAY FROM WINDOWS.  ALSO IF YOU LIVE
NEAR CREEKS OR STREAMS IN THE AREA...BE PREPARED TO MOVE TO HIGHER
GROUND IF WATERS START RISING.

JSN/KJF/HM

PAZ007-162300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILLIAMSPORT PA
1222 PM EDT FRI APR 16 1993

NOAA WEATHER RADIO STATION WXM-95 TOWANDA PENNSYLVANIA IS OFF THE AIR.
PERSONNEL ARE WORKING ON THE PROBLEM AND WILL RESTORE SERVICE AS SOON
AS POSSIBLE.  NO ESTIMATE OF WHEN WE WILL RETURN TO NORMAL OPERATION
IS AVAILABLE.

HM

PAZ006-008-009-013-162000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HARRISBURG PA
110 PM EDT FRI APR 16 1993

...FLOOD WARNINGS FOR SMALL STREAMS IN EFFECT FOR ADAMS...CENTRE...FRANKLIN...
   AND HUNTINGDON COUNTIES UNTIL 430 PM...
...FLOOD WARNINGS FOR SMALL STREAMS IN EFFECT FOR CUMBERLAND...DAUPHIN...AND
   YORK COUNTIES UNTIL 515 PM...
...A FLOOD WATCH IS IN EFFECT FOR THE SOUTH CENTRAL MOUNTAINS...AND
   THE LOWER AND MIDDLE SUSQUEHANNA VALLEY UNTIL 1000 PM...
...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF EASTERN PENNSYLVANIA
   UNTIL 200 PM...

AT 100 PM HARRISBURG RADAR SHOWED THUNDERSTORMS WITH VERY HEAVY RAIN OVER
YORK AND DAUPHIN COUNTIES.  THESE STORMS WERE PART OF A LARGE AREA OF SHOWERS
AND THUNDERSTORMS EXTENDING FROM NORTHEAST PENNSYLVANIA SOUTHEASTWARD TO
NORTHEAST VIRGINIA.  THE INDIVIDUAL STORMS WERE MOVING TOWARD THE NORTHEAST
AROUND 45 MILES AN HOUR WHILE THE ENTIRE AREA WAS MOVING TOWARD THE EAST
AROUND 20 MPH.

AT 1215 REPORTS WERE RECEIVED OF MINOR STREET FLOODING IN DAUPHIN...CENTRE...
AND CUMBERLAND COUNTIES.  ONE INCIDENT OF BASEMENT FLOODING WAS REPORTED
IN CUMBERLAND COUNTY.

IN HUNTINGDON COUNTY A FLOOD EMERGENCY WAS DECLARED FOR HUNTINGDON BOROUGH AND
THE MUDDY RUN WAS REPORTED TO BE OUT OF ITS BANKS.

IN FRANKLIN COUNTY ONE ROAD IN GREENE TOWNSHIP WAS CLOSED DUE TO FLOODING.

DO NOT ATTEMPT TO DRIVE OVER A FLOODED ROAD...ONLY 2 FEET OF WATER CAN SWEEP
YOU AND YOUR ChAR DOWNSTREAM.  DO NOT DRIVE AROUND POLICE BARRICADES.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL TV AND RADIO STATIONS FOR THE
LATEST STATEMENTS AND POSSIBLE WARNINGS.

MATUSIEWICZ