Severe Thunderstorm Warning 77, NWS State College, PA

CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
250 PM EDT THU JUL 01 1999

STORMS FIRING ATTM IN CONVERGENCE ZONE OVER LAURELS...WITH MAIN AREA
OF ACTION STILL BACK OVER OHIO. A BREAK IN THE ACTION IN BETWEEN
THESE TWO AREAS...DEPICTED WELL BY MODELS. HAVE PUT CAT POPS IN
FIRST PERIOD EVERYWHERE EXCEPT LOWER SUSQ. SOME HEAVY DOWNPOURS
LIKELY...BUT DECIDED TO SAVE THAT WORDING FOR SITE SPECIFIC
NOWCASTS. SAME FOR HAIL AND GUSTY WINDS. KCCX VWP HAS 40 KTS AT
AROUND 10KFT. FZNG LEVEL AROUND 15KFT SHUD LIMIT HAIL SIZE.

LOOKS LIKE BACK EDGE OF PRECIP CLEARS MOST OF CTP CWA DURING FRI
AFT...WITH POPS DECREASING RAPIDLY AFT 15Z OR SO. CONSIDERED PUTTING
CHC POPS BACK IN FOR SAT...BUT PRECLUDED BY LOW CONFIDENCE AT THIS
POINT IN WEAK SYSTEMS BEING ABLE TO OVERCOME BUILDING RIDGE.

THE FOURTH LOOKS HOT AS A FIRECRACKER...WITH OPPRESIVE DEW POINTS TO
BOOT. HOPE PROGGED SUPRESSION OF THE BIG H5 RIDGE BY MID WEEK
VERIFIES TO BRING SOME RELIEF.

.CTP...NONE.

OSTUNO

PAZ004>006-010>012-017-018-024-025-033-034-037-020300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
430 PM EDT THU JUL 1 1999

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS
EVENING AND EARLY TONIGHT ACROSS THE NORTHERN MOUNTAINS AND
LAUREL HIGHLANDS...

...DETAILS...
A DEVELOPING STORM SYSTEM OVER OHIO WILL BE PUSHING THUNDERSTORMS
INTO PENNSYLVANIA LATER THIS EVENING.

WARM AND HUMID AIR IS SPREADING INTO THE NORTHERN MOUNTAINS AND
LAUREL HIGHLANDS OF PENNSYLVANIA. THE LINE OF STORMS IN OHIO IS
MOVING TO THE EAST...SPURRED ON BY COOLER AIR ALOFT. THIS COMBINATION
OF WARM...HUMID AIR AT THE SURFACE AND COOLER AIR ALOFT WILL TRIGGER
SHOWERS AND THUNDERSTORMS.

THE THUNDERSTORMS CURRENTLY IN CENTRAL PENNSYLVANIA ARE IN ADVANCE
OF THIS MAIN LINE OF STORMS...AND DO NOT HAVE THE INSTABILITY NEEDED
TO BECOME SEVERE AT THIS TIME. THEY ARE CURRENTLY PRODUCING HEAVY
RAIN IN SPOTS...AND ONLY BRIEF WIND GUSTS OVER 30 MPH.

THE MAIN LINE OF STORMS DOES HAVE THE POTENTIAL TO BECOME SEVERE.
THIS LINE WILL MOVE INTO THE AREA FROM THE WEST DURING THE LATE
EVENING AND CONTINUE ACROSS THE AREA THROUGH MIDNIGHT. SOME OF THE
THUNDERSTORMS COULD CONTAIN STRONG GUSTY WINDS AND LARGE HAIL.

SKYWARN SPOTTER ACTIVATION IS STILL POSSIBLE.

PLEASE STAY TUNED TO YOUR NOAA WEATHER RADIO...OR YOUR FAVORITE
SOURCE OF WEATHER INFORMATION...FOR THE LATEST FORECASTS AND
STATEMENTS ON THIS POTENTIALLY SEVERE WEATHER SITUATION.

.END/DANGELO

ADDITIONAL WEATHER INFORMATION CAN BE FOUND ON THE INTERNET AT:
HTTP://BOOKEND.MET.PSU.EDU  (ALL LOWER CASE)

PAZ004>006-010>012-017-018-024-025-033-034-037-020300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
430 PM EDT THU JUL 1 1999

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS
EVENING AND EARLY TONIGHT ACROSS THE NORTHERN MOUNTAINS AND
LAUREL HIGHLANDS...

...DETAILS...
A DEVELOPING STORM SYSTEM OVER OHIO WILL BE PUSHING THUNDERSTORMS
INTO PENNSYLVANIA LATER THIS EVENING.

WARM AND HUMID AIR IS SPREADING INTO THE NORTHERN MOUNTAINS AND
LAUREL HIGHLANDS OF PENNSYLVANIA. THE LINE OF STORMS IN OHIO IS
MOVING TO THE EAST...SPURRED ON BY COOLER AIR ALOFT. THIS COMBINATION
OF WARM...HUMID AIR AT THE SURFACE AND COOLER AIR ALOFT WILL TRIGGER
SHOWERS AND THUNDERSTORMS.

THE THUNDERSTORMS CURRENTLY IN CENTRAL PENNSYLVANIA ARE IN ADVANCE
OF THIS MAIN LINE OF STORMS...AND DO NOT HAVE THE INSTABILITY NEEDED
TO BECOME SEVERE AT THIS TIME. THEY ARE CURRENTLY PRODUCING HEAVY
RAIN IN SPOTS...AND ONLY BRIEF WIND GUSTS OVER 30 MPH.

THE MAIN LINE OF STORMS DOES HAVE THE POTENTIAL TO BECOME SEVERE.
THIS LINE WILL MOVE INTO THE AREA FROM THE WEST DURING THE LATE
EVENING AND CONTINUE ACROSS THE AREA THROUGH MIDNIGHT. SOME OF THE
THUNDERSTORMS COULD CONTAIN STRONG GUSTY WINDS AND LARGE HAIL.

SKYWARN SPOTTER ACTIVATION IS STILL POSSIBLE.

PLEASE STAY TUNED TO YOUR NOAA WEATHER RADIO...OR YOUR FAVORITE
SOURCE OF WEATHER INFORMATION...FOR THE LATEST FORECASTS AND
STATEMENTS ON THIS POTENTIALLY SEVERE WEATHER SITUATION.

.END/DANGELO

ADDITIONAL WEATHER INFORMATION CAN BE FOUND ON THE INTERNET AT:
HTTP://BOOKEND.MET.PSU.EDU  (ALL LOWER CASE)

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