Severe Thunderstorm Warning 110, NWS Pittsburgh, PA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
518 PM EDT SUN JUN 29 2008

.SYNOPSIS...
POTENTIALLY SEVERE THUNDERSTORMS WITH DAMAGING WIND AND HEAVY
RAIN CAN AFFECT THE UPPER OHIO VALLEY UNTIL A COLD FRONT MOVES
THROUGH OVERNIGHT. A COLD UPPER LEVEL THROUGH OF LOW PRESSURE
NEAR THE GREAT LAKES WILL COOL DOWN TEMPERATURES BUT STILL GENERATE
SCATTERED THUNDERSTORMS LATE MONDAY. HIGH PRESSURE FROM THE
MIDWEST WILL BRING DRY CONDITIONS AND A REBOUND IN TEMPERATURES
TUESDAY AND WEDNESDAY.

&&

.NEAR TERM /UNTIL 6 AM MONDAY MORNING/...
JUDGING FROM RECENT RADAR DATA AND SREF MODEL RUNS EXPECT
POTENTIALLY SEVERE THUNDERSTORMS TO AFFECT THE UPPER OHIO VALLEY
INTO EARLY TONIGHT...IN CONCURRENCE WITH SPC GUIDANCE. OVERNIGHT
TEMPERATURES WILL COOL DOWN TO BELOW SEASONAL VALUES AS INDICATED
BY BLEND OF GFS AND NAM MOS.

&&

.SHORT TERM /6 AM MONDAY MORNING THROUGH MONDAY NIGHT/...
MID LEVEL TROUGH SWINGS SOUTHEAST ACROSS THE REGION MONDAY
AFTERNOON...WITH COLDER AIR ALOFT INCREASING THUNDERSTORM
DEVELOPMENT. WITH THIS COLDER AIR ALOFT...COULD SEE SMALL HAIL IN
STORMS MONDAY AFTERNOON. SURFACE RIDGING WILL BUILD NORTHEAST
MONDAY NIGHT...HELPING TO SUPPRESS ACTIVITY. WITH THE COOL AIRMASS
IN PLACE...TEMPERATURES WILL BE ABOUT 10 TO 15 DEGREES BELOW
CLIMATOLOGICAL NORMS.

&&

.LONG TERM /TUESDAY THROUGH SUNDAY/...
HIGH PRESSURE SHOULD HOLD FOR THE PERIOD FROM TUESDAY THROUGH
WEDNESDAY...WITH A COLD FRONT DROPPING DOWN FROM THE NORTH
WEDNESDAY NIGHT...AND CROSSING ON THURSDAY. THIS BOUNDARY WILL
LINGER JUST TO THE SOUTH OF THE CWA THROUGH THE
WEEKEND...PROVIDING SOME FOCUS FOR STORM PRODUCTION. TEMPERATURES
WILL RECOVER TO NEAR NORMAL BY THE WEEKEND.

&&

.AVIATION /21Z SUNDAY THROUGH FRIDAY/...
AT CURRENT RATE OF MOVEMENT EXPECT THE COLD FRONT AND PREFRONTAL
BANDS OF THUNDERSTORMS TO EXIT INTO THE APPALACHIAN MOUNTAINS
EARLY TONIGHT. LINES OF THUNDERSTORMS WITH LARGE HAIL AND
ISOLATED DAMAGING WINDS EAST OF FRONT. OUTSIDE OF THUNDERSTORMS
CONDITIONS GENERALLY VFR WITH CIGS 030-040 AND VSBY UNLIMITED.
CONDITIONS BRIEFLY LOWERING TO IFR IN TSTMS WITH POSSIBLE GUST TO
50KTS. BEHIND COLD FRONT CIGS 040-070 WITH UNLIMITED VISIBILITY.
EXPECT STRATOCU CIGS AOB 010 TO DEVELOP AFT 08Z WITH VSBY AOB 3
MILES FOG. CONDITIONS WILL BE SLOW TO IMPROVE WITH GENERAL MVFR
CONDITIONS AFT 15Z.

SCTD SHOWERS AND THUNDERSTORMS WILL DEVELOP MONDAY AFTN WITH GUSTY
WINDS AND SMALL HAIL POSSIBLE.

HIGH PRESSURE BUILDS IN MONDAY NIGHT WITH VFR CONDITIONS THROUGH
WEDNESDAY. COLD FRONT MOVES SOUTHEAST FROM GREAT LAKES THURSDAY WITH
SCTD THUNDERSTORMS. FRONT STALLS ACROSS SOUTHERN WV THURSDAY NIGHT
WITH MVFR CONDS PERSISTING INTO FRIDAY MORNING.

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PITTSBURGH PA
457 PM EDT SUN JUN 29 2008

OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023-
029>032-WVZ001>004-012-021-022-302100-
TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-JEFFERSON OH-
MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-MERCER-VENANGO-FOREST-
LAWRENCE-BUTLER-CLARION-JEFFERSON PA-BEAVER-ALLEGHENY-ARMSTRONG-
INDIANA-WASHINGTON-WESTMORELAND-GREENE-FAYETTE-HANCOCK-BROOKE-OHIO-
MARSHALL-WETZEL-MARION-MONONGALIA-
457 PM EDT SUN JUN 29 2008

...SEVERE THUNDERSTORM WATCH 638 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL OHIO...NORTHWEST
PENNSYLVANIA...SOUTHWEST PENNSYLVANIA...WEST CENTRAL
PENNSYLVANIA...NORTHERN WEST VIRGINIA AND NORTHERN PANHANDLE OF
WEST VIRGINIA.

.DAY ONE...TONIGHT

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

THE PRIMARY HAZARD WITH THE SEVERE THUNDERSTORMS THIS EVENING
WILL BE DAMAGING WINDS...THE SECONDARY HAZARD WILL BE LARGE HAIL.
ALSO RAIN AMOUNTS OF OVER 1.5 INCHES IN A COUPLE HOURS MAY CAUSE
FLOODING.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

THUNDERSTORMS MONDAY AFTERNOON AND EVENING MAY CAUSE HAIL AND
GUSTY WINDS.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

WVZ023-041-302100-
PRESTON-TUCKER-
457 PM EDT SUN JUN 29 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN WEST VIRGINIA.

.DAY ONE...TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS EVENING. THE
PRIMARY SEVERE WEATHER THREAT WILL BE DAMAGING THUNDERSTORMS
WINDS...THE SECONDARY THREAT IS LARGE HAIL. ALSO RAIN AMOUNTS OF
OVER 1.5 INCHES IN A COUPLE HOURS MAY CAUSE FLOODING.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

THUNDERSTORMS MONDAY AFTERNOON AND EVENING MAY CAUSE HAIL AND
GUSTY WINDS.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

MDZ001-302100-
GARRETT-
457 PM EDT SUN JUN 29 2008

...SEVERE THUNDERSTORM WATCH 643 IN EFFECT UNTIL MIDNIGHT EDT
TONIGHT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MARYLAND.

.DAY ONE...TONIGHT

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

THE PRIMARY HAZARD WITH THE SEVERE THUNDERSTORMS THIS EVENING
WILL BE DAMAGING WINDS...THE SECONDARY HAZARD WILL BE LARGE HAIL.
ALSO RAIN AMOUNTS OF OVER 1.5 INCHES IN A COUPLE HOURS MAY CAUSE
FLOODING.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

THUNDERSTORMS MONDAY AFTERNOON AND EVENING MAY CAUSE HAIL AND
GUSTY WINDS.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

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SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
647 PM EDT SUN JUN 29 2008

PAZ030>032-WVZ022-023-292345-
FAYETTE PA-GREENE PA-MONONGALIA WV-PRESTON WV-WESTMORELAND PA-
647 PM EDT SUN JUN 29 2008

...THUNDERSTORMS...

THUNDERSTORMS TO MOVE THROUGH THE FOLLOWING COUNTIES...
FAYETTE...WESTMORELAND...GREENE...PRESTON AND MONONGALIA...

AT 642 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH
INDICATED STRONG THUNDERSTORMS 2 MILES EAST OF MOUNT MORRIS...MOVING
EAST AT 37 MPH. THESE STORMS WILL BE CAPABLE OF PRODUCING WIND GUSTS
AROUND 45 MPH...AND POSSIBLY PEA SIZED HAIL.

SOME LOCATIONS THAT WILL BE IMPACTED BY THESE STORMS INCLUDE...
  BOBTOWN...CHALKHILL...ELLIOTTSVILLE...FAIRCHANCE...FARMINGTON...
  GREENSBORO...HOPWOOD...MARKLEYSBURG...MASONTOWN...MOUNT MORRIS...
  OHIOPYLE...SEVEN SPRINGS...CHURCH HILL...DUNKARD AND YOUNGSTOWN

KEEP AN EYE TO THE SKY AND MOVE TO A SAFE PLACE IF THUNDERSTORMS
APPROACH.

PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1-877-633-6772.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT
MONDAY MORNING FOR WESTERN MARYLAND. A SEVERE THUNDERSTORM WATCH ALSO
REMAINS IN EFFECT UNTIL 800 PM EDT SUNDAY EVENING FOR EAST CENTRAL
OHIO AND WESTERN PENNSYLVANIA AND NORTHERN WEST VIRGINIA.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
713 PM EDT SUN JUN 29 2008

MDZ001-PAZ032-WVZ021>023-300015-
FAYETTE PA-GARRETT MD-MARION WV-MONONGALIA WV-PRESTON WV-
713 PM EDT SUN JUN 29 2008

...THUNDERSTORMS...

THUNDERSTORMS TO MOVE THROUGH THE FOLLOWING COUNTIES...
GARRETT...FAYETTE...MARION...PRESTON AND MONONGALIA...

AT 710 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH
INDICATED STRONG THUNDERSTORMS 3 MILES SOUTHWEST OF BROWNS
CHAPEL...MOVING EAST AT 39 MPH. THESE STORMS WILL BE CAPABLE OF
PRODUCING WIND GUSTS AROUND 40 MPH.

SOME LOCATIONS THAT WILL BE IMPACTED BY THESE STORMS INCLUDE...
  MARKLEYSBURG...FIKETOWN...FIVE FORKS...GIBBON GLADE...GLADES...
  ACCIDENT...ALTAMONT...ASHER GLADE...BETHEL...BEVANSVILLE...BIG RUN
  STATE PARK...BITTINGER...BLOOMING ROSE...CASSELMAN AND CRELLIN

KEEP AN EYE TO THE SKY AND MOVE TO A SAFE PLACE IF THUNDERSTORMS
APPROACH.

PLEASE REPORT HAIL...STRONG WINDS OR WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1-877-633-6772.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT
MONDAY MORNING FOR WESTERN MARYLAND. A SEVERE THUNDERSTORM WATCH ALSO
REMAINS IN EFFECT UNTIL 800 PM EDT SUNDAY EVENING FOR EAST CENTRAL
OHIO AND WESTERN PENNSYLVANIA AND NORTHERN WEST VIRGINIA.