Alert archive / West Virginia / Tornado Warnings in 2010

Tornado Warning 11, NWS Pittsburgh, PA

July 25, 2010Fayette County, Pennsylvania; Monongalia County, Preston County, West Virginia

NWS Pittsburgh, PA issued this tornado warning at Jul 25, 2010, 12:29 PM EDT for Fayette County, Pennsylvania; Monongalia County, Preston County, West Virginia. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 25, 2010, 12:29 PM EDT (16:29 UTC)
Expired: Jul 25, 2010, 1:00 PM EDT
In force: 31 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon

Counties Fayette County, PA, Monongalia County, WV, Preston County, WV

The radar

The Pittsburgh radar (KPBZ), 102 km from the middle of the area, began a volume at 16:32 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 25, 11:29 AM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 4.5 hours before the alert went out and 221 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 607 J/kg
Mixed-layer CIN: -173 J/kg
Mixed-layer LCL: 1349 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 190 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Pittsburgh, PA wrote its last area forecast discussion before this tornado warning went out at Jul 25, 11:45 AM EDT, 44 minutes earlier.

Area forecast discussion, Jul 25, 11:45 AM EDT, 44 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
1145 AM EDT SUN JUL 25 2010

.SYNOPSIS...
A COLD FRONT WILL PUSH ACROSS THE AREA THIS AFTERNOON...BRINGING
SHOWERS AND THUNDERSTORMS. HIGH PRESSURE WILL THEN BUILD INTO THE
UPPER OHIO VALLEY BRINGING COOLER AND DRIER CONDITIONS WILL
PREVAIL FOR EARLY IN THE WEEK.

&&

.NEAR TERM /THROUGH TONIGHT/...
A COLD FRONT WILL CONTINUE TO PUSH SOUTHEAST THIS AFTERNOON WITH
DEEP MOISTURE IN PLACE AHEAD OF THE FRONT. WILL KEEP NUMEROUS POPS
FOR ALL AREAS TODAY. GREATEST SEVERE RISK WILL BE ACROSS AREAS SOUTH
AND EAST OF PIT WITH DAMAGING WINDS THE MAIN THREAT.

RESIDUAL SHWRS SOUTH OF I-70 IN WV/MD LATE WILL DIMINISH DURING
THE EVENING HOURS...WITH DRIER AND COOLER AIR FILTERING IN.

&&

.SHORT TERM /MONDAY THROUGH TUESDAY/...
DRIER AND MORE SEASONABLE AIR WILL WORK IN FOR MONDAY UNDER LOW
AMPLITUDE RIDGING. THE RIDGE FLATTENS OUT SOME FOR TUESDAY...WITH
PERHAPS A WEAK WAVE CROSSING AREAS SOUTH OF I-70 TUESDAY AFTN
YIELDING AN ISOLATED TO SCATTERED SHOWER.

&&

.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
MEDIUM RANGE MODELS INDICATE ZONAL FLOW TUESDAY NIGHT/WEDNESDAY
WILL BECOME NORTHWEST CYCLONIC FOR THE LATTER PORTIONS OF THE
WEEK. WITH SURFACE FEATURES NOT WELL DEFINED...PERIODIC WAVES IN
NW FLOW WILL BRING SOME RISK OF SHOWERS. WILL RETAIN THE CURRENT
FCST OF DAILY CHANCES OF SHOWERS FOR WEDNESDAY/THURSDAY WITH PERHAPS
SOME DRYING TREND FOR FRIDAY/SATURDAY. ABOVE NORMAL TEMPERATURES
WEDNESDAY WILL COOL TO NEAR NORMAL FOR THE END OF THE WEEK/INTO
THE WEEKEND.

&&

.AVIATION /16Z SUNDAY THROUGH THURSDAY/...
THUNDERSTORM COVERAGE HAS GREATLY DECREASED AS SERIES OF MCS SLOWLY
DECAY. EXPECT TO SEE SCT SHOWERS/ISO TRW CONTINUE THROUGH THE FIRST
COUPLE OF HOURS OF THE SHORT TERM. PLENTY OF CLOUD COVER OVER THE
AREA...ESPECIALLY FROM THE BOUNDARY OF ACTIVITY NORTHWARD. THE
CLOUDS AND ONGOING ACTIVITY WILL HELP TO KEEP THE ATMOSPHERE COOLED
AND STABLE. THIS WILL LIKELY LIMIT THE EXTENT OF THE ACTIVITY AHEAD
OF THE COLD FRONT AS IT CROSSES THE AREA THIS MORNING. HOWEVER...AS
THIS FRONT MOVES SOUTH OF THE BOUNDARY...STRONGER STORMS ARE
POSSIBLE LATER THIS MORNING AND INTO THE EARLY AFTERNOON. WILL GO
WITH GENERAL VFR CONDITIONS FOR FORECAST WITH TEMPORARY RESTRICTIONS
WITH FRONTAL PASSAGE.

AFTER THE COLD FRONT PASSES SUNDAY EVENING, HIGH PRESSURE WILL BUILD
IN FOR MONDAY AND TUESDAY...RESULTING IN VFR CONDITIONS. SOME MVFR/IFR
FOG COULD BE POSSIBLE SUNDAY NIGHT AND MONDAY MORNING DEPENDING ON
RAINFALL AND WHETHER WINDS GO CALM. NEXT THREAT OF RESTRICTIONS COMES
WEDNESDAY AND THURSDAY WITH UNSETTLED NORTHWEST FLOW.

&&

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

&&

Hazardous weather outlook, Jul 25, 3:42 AM EDT, 8 hours 47 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PITTSBURGH PA
342 AM EDT SUN JUL 25 2010

MDZ001-OHZ057>059-068-069-PAZ029>032-WVZ003-004-012-021>023-041-
261000-
GARRETT-MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-WASHINGTON-
WESTMORELAND-GREENE-FAYETTE-OHIO-MARSHALL-WETZEL-MARION-MONONGALIA-
PRESTON-TUCKER-
342 AM EDT SUN JUL 25 2010

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

.DAY ONE...TODAY AND TONIGHT.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY. THE PRIMARY
SEVERE THREAT IS DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

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

OHZ039>041-048>050-PAZ007>009-013>016-020>023-WVZ001-002-261000-
TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-JEFFERSON OH-MERCER-
VENANGO-FOREST-LAWRENCE-BUTLER-CLARION-JEFFERSON PA-BEAVER-ALLEGHENY-
ARMSTRONG-INDIANA-HANCOCK-BROOKE-
342 AM EDT SUN JUL 25 2010

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

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

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

In the hours before

Special weather statement, Jul 25, 10:19 AM EDT, 2 hours 10 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1019 AM EDT SUN JUL 25 2010

OHZ058-059-068-069-251500-
BELMONT OH-GUERNSEY OH-MONROE OH-NOBLE OH-
1019 AM EDT SUN JUL 25 2010

...THUNDERSTORMS...

THUNDERSTORMS TO MOVE THROUGH THE FOLLOWING COUNTIES...
MONROE...NOBLE...BELMONT AND GUERNSEY...

AT 1017 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH
INDICATED STRONG THUNDERSTORMS 3 MILES NORTHEAST OF
BYESVILLE...MOVING EAST AT 40 MPH.

THESE THUNDERSTORMS CAN PRODUCE WIND GUSTS TO 40 MPH AND HEAVY RAIN
THAT MAY CAUSE PONDED WATER ON ROADS AND IN LOW LYING AREAS.
VISIBILITY CAN BE REDUCED.

SOME LOCATIONS THAT WILL BE IMPACTED BY THESE STORMS INCLUDE...
  WOLF RUN STATE PARK...                      SENECAVILLE...
  SARAHSVILLE...        SALT FORK STATE PARK...
  BYESVILLE...          BELLE VALLEY...       OLD WASHINGTON...
  SENECA LAKE PARK...   SUMMERFIELD...        QUAKER CITY...
  LEWISVILLE...         BARNESVILLE...

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.

LAT...LON 4011 8155 4011 8071 4007 8074 3992 8076
      3992 8081 3986 8079 3984 8083 3981 8082
      3976 8087 3972 8083 3970 8084 3976 8166

Special weather statement, Jul 25, 10:47 AM EDT, 1 hour 42 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1047 AM EDT SUN JUL 25 2010

PAZ021>023-030-251545-
ALLEGHENY PA-ARMSTRONG PA-INDIANA PA-WESTMORELAND PA-
1047 AM EDT SUN JUL 25 2010

...HEAVY RAIN...

THUNDERSTORMS WITH HEAVY RAIN TO MOVE THROUGH THE FOLLOWING
COUNTIES...
ARMSTRONG...ALLEGHENY...WESTMORELAND AND INDIANA...

AT 1042 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH
SHOWED THUNDERSTORMS WITH HEAVY RAIN NEAR GIBSONIA...MOVING EAST AT
35 MPH.

THESE THUNDERSTORMS CAN PRODUCE HEAVY RAIN THAT MAY CAUSE PONDED
WATER ON ROADS AND IN LOW LYING AREAS. VISIBILITY CAN BE REDUCED.
GUSTS TO 40 MPH ARE ALSO POSSIBLE WITH THESE STORMS.

SOME LOCATIONS THAT WILL BE IMPACTED BY THESE THUNDERSTORMS
INCLUDE...
  GIBSONIA...           FOX CHAPEL...         RUSSELLTON...
  PENN HILLS...         SPRINGDALE...         NEW KENSINGTON...
  NATRONA HEIGHTS...    PLUM...               VANDERGRIFT...
  APOLLO...             SALTSBURG...          INDIANA...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

PLEASE REPORT HEAVY RAIN AND FLOODING PROBLEMS TO THE NATIONAL
WEATHER SERVICE BY CALLING TOLL FREE...1-877-633-6772.

LAT...LON 4066 7948 4063 7908 4036 7915 4049 8002
      4067 7997

Special weather statement, Jul 25, 11:05 AM EDT, 1 hour 24 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1105 AM EDT SUN JUL 25 2010

OHZ059-069-PAZ029-031-WVZ003-004-012-021-022-251600-
BELMONT OH-GREENE PA-MARION WV-MARSHALL WV-MONONGALIA WV-MONROE
OH-OHIO WV-WASHINGTON PA-WETZEL WV-
1105 AM EDT SUN JUL 25 2010

...THUNDERSTORMS...

THUNDERSTORMS TO MOVE THROUGH THE FOLLOWING COUNTIES...
MONROE...BELMONT...WASHINGTON...GREENE...MARION...WETZEL...
MONONGALIA...MARSHALL AND OHIO...

AT 1100 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH
INDICATED STRONG THUNDERSTORMS NEAR CAMERON...MOVING EAST AT 40 MPH.

THESE THUNDERSTORMS CAN PRODUCE WIND GUSTS TO 40 MPH AND HEAVY RAIN
THAT MAY CAUSE PONDED WATER ON ROADS AND IN LOW LYING AREAS.
VISIBILITY CAN BE REDUCED.

SOME LOCATIONS THAT WILL BE IMPACTED BY THESE STORMS INCLUDE...
  ROUND BOTTOM...       CAMERON...            BENWOOD...
  CLARINGTON...         HANNIBAL...           NEW MARTINSVILLE...
  POWHATAN POINT...     WOODLANDS...          PROCTOR...
  FAIRVIEW...           BRIDGEPORT...         SHADYSIDE...

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.

LAT...LON 3959 8093 3960 8094 3959 8097 3959 8108
      4008 8084 4009 7987 4008 7988 4008 7990
      4006 7988 4002 7989 3999 7994 4001 8000
      3996 8002 3992 7993 3989 7993 3955 8001

Special weather statement, Jul 25, 11:13 AM EDT, 1 hour 16 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1113 AM EDT SUN JUL 25 2010

PAZ021-029-030-032-251600-
ALLEGHENY PA-FAYETTE PA-WASHINGTON PA-WESTMORELAND PA-
1113 AM EDT SUN JUL 25 2010

...THUNDERSTORMS...

THUNDERSTORMS TO MOVE THROUGH THE FOLLOWING COUNTIES...
FAYETTE...WASHINGTON...ALLEGHENY AND WESTMORELAND...

AT 1107 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH
INDICATED STRONG THUNDERSTORMS 4 MILES SOUTHEAST OF MCMURRAY...MOVING
EAST AT 40 MPH.

THESE THUNDERSTORMS CAN PRODUCE WIND GUSTS TO 45 MPH AND HEAVY RAIN
THAT MAY CAUSE PONDED WATER ON ROADS AND IN LOW LYING AREAS.
VISIBILITY CAN BE REDUCED.

SOME LOCATIONS THAT WILL BE IMPACTED BY THESE STORMS INCLUDE...
  MCMURRAY...           BETHEL PARK...        JEFFERSON BORO...
  MONONGAHELA...        ELIZABETH BORO...     CHARLEROI...
  MONESSEN...           BELLE VERNON...       DONORA...
  WEST NEWTON...        NEW STANTON...        GREENSBURG...

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.

LAT...LON 4009 7924 4008 7926 4003 7930 4016 8011
      4033 8008 4029 7921

Special weather statement, Jul 25, 11:54 AM EDT, 35 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1154 AM EDT SUN JUL 25 2010

MDZ001-PAZ031-032-WVZ012-021>023-251700-
FAYETTE PA-GARRETT MD-GREENE PA-MARION WV-MONONGALIA WV-PRESTON
WV-WETZEL WV-
1154 AM EDT SUN JUL 25 2010

...THUNDERSTORMS...

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

AT 1150 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH
INDICATED STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 4 MILES
WEST OF BROWNSVILLE TO 6 MILES SOUTHWEST OF SMITHFIELD...MOVING EAST
AT 40 MPH.

THESE THUNDERSTORMS CAN PRODUCE WIND GUSTS TO 50 MPH AND HEAVY RAIN
THAT MAY CAUSE PONDED WATER ON ROADS AND IN LOW LYING AREAS.
VISIBILITY CAN BE REDUCED.

SOME LOCATIONS THAT WILL BE IMPACTED BY THESE STORMS INCLUDE...
  WANA...               WADESTOWN...          SMITHFIELD...
  EARNSHAW...           CALIFORNIA...         BROWNSVILLE...
  FOLSOM...             BLACKSVILLE...        METZ...
  CURTISVILLE...        CARMICHAELS...        DAYBROOK...

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.

LAT...LON 3932 7965 3934 7991 3945 7993 3938 8009
      3947 8048 3943 8053 3946 8067 4000 8005
      4001 7998 3999 7994 4003 7987 4008 7990
      4005 7935 4003 7930 3989 7940 3985 7941
      3981 7935 3973 7940 3972 7918

Local storm report, Jul 25, 12:29 PM EDT, 0 minutes before

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The office that day

Everything else NWS Pittsburgh, PA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 24, 8:11 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Lawrence, Mercer, Venango	64 min
Jul 24, 8:14 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Jefferson	46 min
Jul 24, 8:33 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver	57 min
Jul 24, 8:41 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Indiana, Jefferson	64 min
Jul 24, 8:50 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Butler, Westmoreland	55 min
Jul 24, 9:01 PM EDT	Areal Flood Advisory	PBZ	Beaver, Butler, Lawrence	3 hr
Jul 25, 10:12 AM EDT	Special Weather Statement	PBZ	Forest	33 min
Jul 25, 10:47 AM EDT	Special Weather Statement	PBZ	Westmoreland	58 min
Jul 25, 11:05 AM EDT	Special Weather Statement	PBZ	Greene	55 min
Jul 25, 11:13 AM EDT	Special Weather Statement	PBZ	Westmoreland	47 min
Jul 25, 11:54 AM EDT	Special Weather Statement	PBZ	Fayette	66 min
Jul 25, 11:59 AM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	31 min
Jul 25, 12:08 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene	52 min
Jul 25, 12:27 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette	78 min
Jul 25, 4:20 PM EDT	Special Weather Statement	PBZ	Fayette, Greene	55 min
Jul 24, 9:11 PM EDT	Special Weather Statement	PBZ	Carroll, Harrison, Tuscarawas	64 min
Jul 24, 10:39 PM EDT	Special Weather Statement	PBZ	Carroll, Coshocton, Tuscarawas	66 min
Jul 24, 10:59 PM EDT	Areal Flood Advisory	PBZ	Tuscarawas	3 hr
Jul 25, 10:19 AM EDT	Special Weather Statement	PBZ	Belmont, Guernsey, Monroe, Noble	41 min
Jul 25, 4:31 PM EDT	Special Weather Statement	PBZ	Guernsey	59 min
Jul 25, 1:20 PM EDT	Severe Thunderstorm Warning	PBZ	Preston, Tucker	55 min
Jul 25, 4:52 PM EDT	Special Weather Statement	PBZ	Monongalia	23 min
Jul 25, 5:17 PM EDT	Special Weather Statement	PBZ	Monongalia, Preston	58 min

Nearby

Tornado Warnings in West Virginia, 2010 Tornado Warnings in Pennsylvania, 2010 Every tornado warning in 2010 Tornadoes in 2010

Sources

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.