Alert archive / West Virginia / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 57, NWS Pittsburgh, PA

July 18, 1997Preston County, West Virginia

NWS Pittsburgh, PA issued this severe thunderstorm warning at Jul 18, 1997, 6:13 PM EDT for Preston County, West Virginia. It was in force for 62 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 18, 1997, 6:13 PM EDT (22:13 UTC)
Expired
Jul 18, 1997, 7:15 PM EDT
In force
62 min
Issued by
NWS Pittsburgh, PA
Area
Whole counties

County Preston County, WV

The radar

The Pittsburgh radar (KPBZ), 127 km from the middle of the area, began a volume at 21:55 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, 10.2 hours before the alert went out and 111 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-pSkew-T log-p diagram, Pittsburgh, PA at 12:00Z on 1997-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 582 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 1997-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
582 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
1058 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
-10 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Special weather statement, Jul 18, 2:15 PM EDT, 3 hours 58 minutes before
PAZ007>009-013>016-022-190000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
215 PM EDT FRI JUL 18 1997

...THE NATIONAL WEATHER SERVICE IN PITTSBURGH SAYS...

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 8 PM TONIGHT FOR THESE
COUNTIES NORTH OF PITTSBURGH IN WESTERN PENNSYLVANIA...

ARMSTRONG           BUTLER              CLARION             FOREST
JEFFERSON           LAWRENCE            MERCER              VENANGO.

DAMAGING WIND AND HAIL ARE POSSIBLE UNTIL 8 PM TONIGHT.

OTHER THUNDERSTORMS DEVELOPING OVER EAST CENTRAL OHIO ARE MOVING INTO
THE NORTHERN PANHANDLE OF WEST VIRGINIA AND SOUTHWEST PENNSYLVANIA.
UP TO AN INCH AND A HALF OF RAIN IS POSSIBLE WITH THESE STORMS.

AS A COLD FRONT PRESSES SOUTHWARD THIS EVENING...THE RAIN WILL BE
PUSHED FURTHER SOUTH...WITH ALL THE RAIN ENDING BY MIDNIGHT.
Local storm report, Jul 18, 4:20 PM EDT, 1 hour 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
420 PM EDT FRI JUL 18 1997

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0300 PM    CLAYSVILLE                PA   WIND DAMAGE
07/18/97   WASHINGTON                     NUMEROUS PINE TREES
                                          BLOWN DOWN BETWEEN
                                          CLAYSVILLE AND WASHINGTON.
                                          SOME BROKEN OFF HALF WAY
                                          UP.

0303 PM    WASHINGTON                PA   .88 INCH HAIL
07/18/97   WASHINGTON                     3 MILES SW WASHINGTON

0305 PM    3 SW WASHINGTON           PA   WIND DAMAGE
07/18/97   WASHINGHTON                    TREES DOWN.

0313 PM    PITTSBURGH INTL ARPT      PA   .88 INCH HAIL
07/18/97   ALLEGHENY                      3 MILES SW PITTSBURGH
                                          INTERNATIONAL AIRPORT

0330 PM    MURRYSVILLE               PA   WIND DAMAGE
07/18/97   WESTMORELAND                   TREES DOWN.
Local storm report, Jul 18, 4:21 PM EDT, 1 hour 52 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
420 PM EDT FRI JUL 18 1997

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0300 PM    CLAYSVILLE                PA   WIND DAMAGE
07/18/97   WASHINGTON                     NUMEROUS PINE TREES
                                          BLOWN DOWN BETWEEN
                                          CLAYSVILLE AND WASHINGTON.
                                          SOME BROKEN OFF HALF WAY
                                          UP.

0303 PM    WASHINGTON                PA   .88 INCH HAIL
07/18/97   WASHINGTON                     3 MILES SW WASHINGTON

0305 PM    3 SW WASHINGTON           PA   WIND DAMAGE
07/18/97   WASHINGHTON                    TREES DOWN.

0313 PM    PITTSBURGH INTL ARPT      PA   .88 INCH HAIL
07/18/97   ALLEGHENY                      3 MILES SW PITTSBURGH
                                          INTERNATIONAL AIRPORT

0330 PM    MURRYSVILLE               PA   WIND DAMAGE
07/18/97   WESTMORELAND                   TREES DOWN.
Special weather statement, Jul 18, 4:54 PM EDT, 1 hour 19 minutes before
PAZ007>009-013>016-022-190000-

SPECIAL WEATHER STATEMENT - WATCH CANCELLATION
NATIONAL WEATHER SERVICE PITTSBURGH PA
500 PM EDT FRI JUL 18 1997

...THE NATIONAL WEATHER SERVICE IN PITTSBURGH SAYS...

THE SEVERE THUNDERSTORM WATCH FOR WESTERN PENNSYLVANIA NORTH OF
PITTSBURGH HAS BEEN CANCELLED.

A NEW SEVERE THUNDERSTORM WATCH WAS ISSUED FOR CENTRAL PENNSYLVANIA.

ONLY A FEW SCATTERED THUNDERSTORMS REMAIN THIS EVENING FOR EAST
CENTRAL OHIO...NORTHERN WEST VIRGINIA...AND WESTERN PENNSYLVANIA.
Special weather statement, Jul 18, 5:00 PM EDT, 1 hour 13 minutes before
PAZ007>009-013>016-022-190000-

SPECIAL WEATHER STATEMENT - WATCH CANCELLATION
NATIONAL WEATHER SERVICE PITTSBURGH PA
500 PM EDT FRI JUL 18 1997

...THE NATIONAL WEATHER SERVICE IN PITTSBURGH SAYS...

THE SEVERE THUNDERSTORM WATCH FOR WESTERN PENNSYLVANIA NORTH OF
PITTSBURGH HAS BEEN CANCELLED.

A NEW SEVERE THUNDERSTORM WATCH WAS ISSUED FOR CENTRAL PENNSYLVANIA.

ONLY A FEW SCATTERED THUNDERSTORMS REMAIN THIS EVENING FOR EAST
CENTRAL OHIO...NORTHERN WEST VIRGINIA...AND WESTERN PENNSYLVANIA.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 2:48 PM EDTSevere Thunderstorm WarningPBZWashington57 min
Jul 18, 2:58 PM EDTSevere Thunderstorm WarningPBZAllegheny62 min
Jul 18, 3:15 PM EDTSevere Thunderstorm WarningPBZWestmoreland60 min
Jul 18, 7:17 PM EDTSevere Thunderstorm WarningPBZArmstrong58 min
Jul 18, 7:19 PM EDTSevere Thunderstorm WarningPBZAllegheny56 min
Jul 18, 7:29 PM EDTSevere Thunderstorm WarningPBZIndiana46 min
Jul 18, 7:40 PM EDTSevere Thunderstorm WarningPBZWestmoreland50 min
Jul 18, 7:56 PM EDTSevere Thunderstorm WarningPBZBeaver, Washington49 min
Jul 18, 5:55 PM EDTSevere Thunderstorm WarningPBZGuernsey65 min
Jul 18, 7:24 PM EDTSevere Thunderstorm WarningPBZColumbiana51 min
Jul 18, 7:51 PM EDTSevere Thunderstorm WarningPBZJefferson54 min
Jul 18, 2:32 PM EDTSevere Thunderstorm WarningPBZBrooke58 min

Nearby

Severe Thunderstorm Warnings in West Virginia, 1997Every severe thunderstorm warning in 1997

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.