Severe Thunderstorm Warning 47, NWS State College, PA

CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
340 PM EDT SAT MAY 13 2000

COLD FRNT MVING INTO WRN PA ATTM PRODUCING A RELATIVELY NARROW BAND
OF CONVECTION AHEAD OF IT. THIS NARROW LINE SHOULD CROSS NWRN THIRD
OF CWA WITHIN THE NEXT HOUR. SCT SHOWERS AND THUNDERSTORMS WILL BE
THE RULE THROUGH THIS EVENING FOR MUCH OF CWA...WITH BEST SEVERE
THREAT LOOKING TO BE OVER THE LOWER SUSQ VALLEY ALONG THE MD BORDER.
WILL INCLUDE EXTRA EVENING PD OR END PCPN AFTER EVENING IN FIRST PD
TO COVER THIS ONGOING CONVECTION.

ONCE FRNT PASSES...SKIES SHOULD CLEAR RATHER QUICKLY...WITH LACK OF
POST FRONTAL STRATIFORM RAIN AREA. SUNDAY LOOKS TO BE A PRETTY NICE
DAY BEHIND FRONT. THE EXCEPTION MAY BE UP NORTH WHERE SELF DESTRUCT
SUNSHINE UNDER THE UPR LOW COLD POCKET SKIRTS THE NRN TIER.

WITH MAIN SFC LOW REMAINING TO THE NORTH DO NOT EXPECT POST FRONTAL
WINDS TO BE SIG TOMORROW...BUT WILL INCLUDE BREEZY FOR NRN SECTIONS
AND OVER LOWER SUSQ WHERE POST FRONTAL TEMP GRADIENT SHOULD BE
SUFFICIENT TO CAUSE NORTHWEST WINDS OF 10 TO 20 KTS.

A WEAK FRNT/SHORTWAVE MOVES THOUGH EARLY MON MORN. THIS MAY BE
ENOUGH TO BRING A MORNING SHOWER OR SPRINKLE TO NRN LOCATIONS...BUT
WITH LIMITED MOISTURE BEHIND TODAYS FROPA CAN SEE THIS VANISHING FROM
FUTURE FORECASTS. OTHERWISE MONDAY INTO MID WEEK WILL BE P TO M
SUNNY WITH LITTLE CHANCE OF PCPN AS HPC MDM RANGE GUIDANCE AND MODELS
BRING AREA OF HIGH PRESSURE OVER THE REGION.

THAT IS ALL.

.CTP...SEVERE THUNDERSTORM WATCH TIL 8PM EDT FOR ZONES 64-65-66.

GARTNER

PAZ005-006-010>012-017>019-025>028-034>037-041-042-045-046-049>053-
056>059-063>066-132000-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1135 AM EDT SAT MAY 13 2000

...SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY...

A STRONG COLD FRONT MOVING THROUGH OHIO WILL MOVE ACROSS WESTERN AND
CENTRAL PENNSYLVANIA THIS AFTERNOON. THUNDERSTORMS WILL DEVELOP
AHEAD OF THIS FRONT. ANY STORMS THAT FORM WILL HAVE THE POTENTIAL OF
PRODUCING DAMAGING WINDS AND LARGE HAIL. SOME THUNDERSTORMS MAY ALSO
PRODUCE LOCALLY HEAVY DOWNPOURS.

THE GREATEST THREAT FOR SEVERE WEATHER WILL BE OVER THE SOUTHERN
MOUNTAINS AND MIDDLE AND LOWER SUSQUEHANNA VALLEY WHERE TEMPERATURES
WILL BE THE WARMEST BEFORE THE FRONT MOVES THROUGH.

SKYWARN SPOTTER NETWORKS MAY NEED TO BE ACTIVATED THIS AFTERNOON.

.END/ GARTNER

PAZ064>066-140000-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
240 PM EDT SAT MAY 13 2000

A SEVERE THUNDERSTORM WATCH IS IN EFFECT THIS AFTERNOON AND EVENING
UNTIL 8 PM FOR THE FOLLOWING COUNTIES IN CENTRAL PENNSYLVANIA...

ADAMS...LANCASTER...AND YORK.

SEVERE THUNDERSTORMS PRODUCE LARGE DAMAGING HAIL 3/4 OF AN INCH IN
DIAMETER OR LARGER...DAMAGING THUNDERSTORM WINDS OF 58 MPH OR
GREATER AND DANGEROUS CLOUD TO GROUND LIGHTNING.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND (LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

.END/RXR