Alert archive / West Virginia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 128, NWS Pittsburgh, PA

July 3, 2011Fayette County, Pennsylvania; Monongalia County, Preston County, West Virginia

NWS Pittsburgh, PA issued this severe thunderstorm warning at Jul 3, 2011, 4:03 PM EDT for Fayette County, Pennsylvania; Monongalia County, Preston County, West Virginia. It was in force for 27 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 3, 2011, 4:03 PM EDT (20:03 UTC)
Expired: Jul 3, 2011, 4:30 PM EDT
In force: 27 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 20:06 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 nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 8.1 hours before the alert went out and 86 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: 568 J/kg
Mixed-layer CIN: -164 J/kg
Mixed-layer LCL: 1090 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 159 m²/s²
0-3 km storm-relative helicity: 150 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jul 3, 3:25 PM EDT, 38 minutes earlier.

Area forecast discussion, Jul 3, 3:25 PM EDT, 38 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
325 PM EDT SUN JUL 3 2011

.SYNOPSIS...
A WEAK COLD FRONT WILL DROP SOUTHEASTWARD ACROSS THE REGION THIS
EVENING, BRINGING A FEW SHOWERS AND THUNDERSTORMS. HIGH PRESSURE
WILL THEN BUILD IN FROM THE NORTHWEST WITH PREDOMINATELY DRY
WEATHER EXPECTED MONDAY INTO WEDNESDAY.

&&

.NEAR TERM /THROUGH TONIGHT/...
A FRONTAL BOUNDARY IS DEFINED BY A WIND SHIFT EXTENDING FROM
INDIANA, PA SOUTHWESTWARD TO WHEELING AND TO ZANESVILLE. STRONG
INSTABILITY (CAPE 3000-4000 J/KG) WITH THE FRONT DROPPING
SOUTHEASTWARD WILL PROVIDE A BETTER CHANCE OF CONVECTION
DEVELOPING SOUTH OF THIS WIND SHIFT INTO THIS EVENING. DESPITE A
WEAK WIND SHEAR ENVIRONMENT, STRONG INSTABILITY ALONG CONVERGENCE
LINE WILL BE ENOUGH TO SUPPORT A FEW STRONG TO SEVERE STORMS.

TONIGHT...REMNANT CONVECTION FOCUSED ALONG A MOSTLY WASHED OUT FRONT
WILL DIMINISH AND PUSH SOUTH OF THE AREA. CIRRUS SPILLING INTO
THE AREA FROM THE WEST AND DEW POINTS NEAR 60 WILL LIMIT OVERNIGHT
LOWS. LOW TEMPS ARE CLOSER TO THE WARMER MET GUIDANCE.

&&

.SHORT TERM /MONDAY THROUGH WEDNESDAY/...
12Z RUNS OF THE NAM/GFS ARE INDICATING THAT A WEAK SHORT WAVE
WILL PUSH ACROSS EASTERN OHIO AND WEST VIRGINIA ON THE FOURTH OF
JULY. THE SLIGHT CHANCE OF LATE AFTERNOON AND EARLY EVENING
THUNDERSTORMS HAS BEEN ADDED SOUTHWEST OF PITTSBURGH WITH THE
SUPPORT OF THE 12Z 4KM WRF-NMM. IF ANY CONVECTION DEVELOPS, IT
WILL DIMINISH FOR THE OVERNIGHT WITH THE LOSS OF HEATING.

TUESDAY THROUGH WEDNESDAY...THERE IS OPERATIONAL MODEL AGREEMENT
THAT THE AREA WILL DRY BE UNDER A WEAK AREA OF HIGH PRESSURE WITH
A MID-LEVEL NORTHWESTERLY FLOW TUESDAY AND TUESDAY NIGHT. A COLD
FRONT WILL APPROACH THE AREA FROM THE NORTHWEST ON WEDNESDAY,
RETURNING A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS DURING THE
LATE AFTERNOON ACROSS AREAS NORTHWEST OF PITTSBURGH. TEMPERATURES
THROUGHOUT THE SHORT TERM PERIOD WILL BE A FEW DEGREES ABOVE
NORMAL.

&&

.LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/...
DID NOT STRAY FAR FROM HPC PROGS AS MODELS IN OVERALL GOOD AGREEMENT
ON UPCOMING WEEK. COLD FRONT WILL PUSH INTO REGION LATE WEDNESDAY
WITH INCREASING CHANCES FOR SHOWERS AND STORMS LATE WEDNESDAY NIGHT
AND DURING THE DAY THURSDAY. SHOWERS WILL BEGIN TO DIMINISH
THURSDAY NIGHT AS FRONT PUSHES SOUTH WITH BEST CHANCES THURSDAY
NIGHT IN THE SOUTHEAST RIDGES. LINGERING SLIGHT CHANCE POP FRIDAY IN
THE SOUTHEAST OTHERWISE DRY INTO THE WEEKEND. TEMPERATURES WILL
AVERAGE A BIT ABOVE NORMAL.

&&

.AVIATION /19Z SUNDAY THROUGH FRIDAY/... WIND SHIFT LINE IS
THROUGH KHLG AND SHOULD PROGRESS ACROSS REMAINING TERMINALS BY
EVENING. SOME MVFR CIGS ALONG AND JUST BEHIND WIND SHIFT THEN
CLEARING ACROSS THE FAR NORTH AS DEW POINTS DROP SOMEWHAT ALONG
WITH DEEPER DRYING IN THE MID LEVELS. ONLY REMAINING CHANCE FOR
AFTERNOON THUNDERSTORM LOOKS TO BE KMGW AS LOW LEVEL CONVERGENCE
AHEAD OF WIND SHIFT MAY BE ABLE TO INITIATE SCATTERED CONVECTION.
OTHERWISE WINDS WILL BECOME LIGHT NORTHWEST TO NORTH OVERNIGHT
WITH SKIES CLEARING. ADDED MVFR FOG TOWARD DAYBREAK MOST AREAS BUT
THIS SHOULD BE SHORT LIVED.

ON MONDAY MODELS ATTEMPT TO BRING SHORTWAVE ACROSS LOWER OHIO
VALLEY AND THIS COULD MAY BRING SCATTERED CONVECTION TO KZZV OR KMGW
DURING THE DAY BUT CHANCES TOO SLIM TO MENTION AT THIS TIME.

HIGH PRESSURE WILL KEEP GENERAL VFR INTO LATE WEDNESDAY WHEN FRONT
WILL WORK ACROSS REGION WITH POSSIBLE RESTRICTIONS INTO THURSDAY.
GENERAL VFR BEHIND FRONT FOR FRIDAY.

&&

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

&&

Hazardous weather outlook, Jul 3, 5:05 AM EDT, 10 hours 58 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PITTSBURGH PA
505 AM EDT SUN JUL 3 2011

MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023-
029-031-073>076-WVZ001>004-012-021>023-041-040915-
GARRETT-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-GREENE-WESTMORELAND-WESTMORELAND RIDGES-
FAYETTE-FAYETTE RIDGES-HANCOCK-BROOKE-OHIO-MARSHALL-WETZEL-MARION-
MONONGALIA-PRESTON-TUCKER-
505 AM EDT SUN JUL 3 2011

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

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Jul 3, 2:46 PM EDT, 1 hour 17 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
246 PM EDT SUN JUL 3 2011

OHZ069-WVZ004-012-031930-
MARSHALL WV-MONROE OH-WETZEL WV-
246 PM EDT SUN JUL 3 2011

...STRONG THUNDERSTORMS WILL AFFECT MONROE...NORTHWESTERN WETZEL AND
SOUTHERN MARSHALL COUNTIES...

AT 241 PM EDT...A CLUSTER OF STRONG THUNDERSTORMS WAS LOCATED ACROSS
NORTHERN MONROE COUNTY...MOVING EAST AT 10 MPH.

WIND GUSTS TO 40 MPH AND HAIL UP TO DIME SIZE ARE POSSIBLE WITH THESE
STORMS.

SOME LOCATIONS THAT WILL BE IMPACTED INCLUDE...
  WOODSFIELD...         LEWISVILLE...         GRAYSVILLE...
  ANTIOCH...            BENWOOD...            ROUND BOTTOM...
  WOODLANDS...          WILEYVILLE...         PROCTOR...
  PORTERS FALLS...      PINE GROVE...         NEW MARTINSVILLE...

PLEASE REPORT SIGNIFICANT WEATHER TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 3958 8085 3959 8085 3959 8087 3968 8125
      3981 8128 3986 8114 3979 8054 3954 8067

WOODRUM

Special weather statement, Jul 3, 3:05 PM EDT, 58 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
305 PM EDT SUN JUL 3 2011

PAZ029-031-075-076-032000-
FAYETTE PA-FAYETTE RIDGES PA-GREENE PA-WASHINGTON PA-
305 PM EDT SUN JUL 3 2011

...STRONG THUNDERSTORMS WILL AFFECT GREENE...SOUTHERN WASHINGTON
AND FAYETTE COUNTIES...

AT 300 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR IN PITTSBURGH
INDICATED A CLUSTER OF STRONG THUNDERSTORMS EXTENDING FROM 3 MILES
NORTHWEST OF FAIRCHANCE TO 3 MILES WEST OF ROGERSVILLE...MOVING
SOUTHEAST AT 15 MPH.

WIND GUSTS TO 40 MPH AND HAIL UP TO DIME SIZE ARE POSSIBLE WITH THESE
STORMS.

SOME LOCATIONS THAT WILL BE IMPACTED BY THESE STORMS INCLUDE...
WAYNESBURG...    NEMACOLIN...    MARIANNA...  JEFFERSON BORO...
CARMICHAELS...   BROWNSVILLE...  ROGERSVILLE...
UNIONTOWN...     MASONTOWN...

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 3992 7938 3985 7941 3984 7938 3981 7935
      3978 7939 3972 7940 3972 7988 3974 8048
      4009 8050 4000 7933 3999 7932

Local storm report, Jul 3, 3:49 PM EDT, 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
349 PM EDT SUN JUL 03 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0333 PM     TSTM WND DMG     CARMICHAELS             39.90N  79.97W
07/03/2011                   GREENE             PA   911 CALL CENTER

            NUMEROUS TREES DOWN IN CARMICHAELS... DILLNER... AND
            NEMACOLIN.

&&

EVENT NUMBER PBZ1100903

RCC

Special weather statement, Jul 3, 4:01 PM EDT, 2 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
401 PM EDT SUN JUL 3 2011

MDZ001-PAZ029-031-075-076-WVZ004-012-022-023-032100-
FAYETTE PA-FAYETTE RIDGES PA-GARRETT MD-GREENE PA-MARSHALL WV-
MONONGALIA WV-PRESTON WV-WASHINGTON PA-WETZEL WV-
401 PM EDT SUN JUL 3 2011

...STRONG THUNDERSTORMS WILL AFFECT EASTERN MARSHALL...EXTREME
NORTHEASTERN WETZEL...EXTREME SOUTHWESTERN
WASHINGTON...GARRETT...GREENE...NORTHERN MONONGALIA...NORTHERN
PRESTON AND SOUTHERN FAYETTE COUNTIES...

AT 358 PM EDT...A CLUSTER OF STRONG THUNDERSTORMS EXTENDED FROM
EASTERN MARSHALL COUNTY IN WEST VIRGINIA ACROSS GREENE AND FAYETTE
COUNTIES IN PENNSYLVANIA. THESE STORMS WILL MOVE SOUTHEAST AT 15 MPH
INTO MONONGALIA...PRESTON...AND GARRETT COUNTIES.

WIND GUSTS TO 50 MPH AND PEA-SIZED HAIL ARE POSSIBLE WITH THESE
STORMS.

SOME LOCATIONS THAT WILL BE IMPACTED INCLUDE...
  LONE OAK...           GLEN EASTON...        ROCKLICK...
  CAMERON...            RYERSON STATION...    SWARTS...
  ROGERSVILLE...        BUZZ...               WAYNESBURG...
  WESTOVER...           WANA...               VALLEY POINT...

PLEASE REPORT SIGNIFICANT WEATHER TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 3941 7914 3963 8012 3978 8069 4001 8055
      3993 7938 3985 7941 3981 7935 3978 7939
      3972 7939 3973 7909 3972 7893

WOODRUM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 1:04 AM EDT	Special Weather Statement	PBZ	Fayette	56 min
Jul 3, 1:49 AM EDT	Special Weather Statement	PBZ	Greene	56 min
Jul 3, 3:05 PM EDT	Special Weather Statement	PBZ	Fayette, Greene	55 min
Jul 3, 3:20 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene	55 min
Jul 3, 4:01 PM EDT	Special Weather Statement	PBZ	Fayette, Greene	59 min
Jul 3, 4:14 PM EDT	Areal Flood Advisory	PBZ	Fayette, Greene	2 hr
Jul 3, 2:46 PM EDT	Special Weather Statement	PBZ	Monroe	44 min
Jul 3, 3:26 PM EDT	Severe Thunderstorm Warning	PBZ	Monroe	34 min
Jul 3, 4:45 PM EDT	Areal Flood Advisory	PBZ	Monroe	3 hr
Jul 3, 2:42 AM EDT	Special Weather Statement	PBZ	Preston	63 min
Jul 3, 4:04 PM EDT	Special Weather Statement	PBZ	Wetzel	56 min
Jul 3, 5:00 PM EDT	Special Weather Statement	PBZ	Marion, Wetzel	45 min
Jul 3, 5:40 PM EDT	Special Weather Statement	PBZ	Tucker	50 min

Nearby

Severe Thunderstorm Warnings in West Virginia, 2011 Severe Thunderstorm Warnings in Pennsylvania, 2011 Every severe thunderstorm warning in 2011

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.