Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 80, NWS Pittsburgh, PA

July 28, 1997Allegheny County, Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at Jul 28, 1997, 2:26 PM EDT for Allegheny County, Pennsylvania. It was in force for 49 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 28, 1997, 2:26 PM EDT (18:26 UTC)
Expired: Jul 28, 1997, 3:15 PM EDT
In force: 49 min
Issued by: NWS Pittsburgh, PA
Area: Whole counties

County Allegheny County, PA

The radar

The Pittsburgh radar (KPBZ), 21 km from the middle of the area, began a volume at 18:26 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, 6.4 hours before the alert went out and 12 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: 448 J/kg
Mixed-layer CIN: -84 J/kg
Mixed-layer LCL: 813 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KPIT 281824 RRA
SVRPIT
PAC003-281915-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
226 PM EDT MON JUL 28 1997
 
THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  315 PM EDT
FOR THE FOLLOWING LOCATION...
 
IN WEST PENNSYLVANIA
 
   ...ALLEGHENY COUNTY
 
AT 220 PM NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM
OVER NORTHERN ALLEGHENY COUNTY. TOWNS IN THE PATH INCLUDE...NATRONA
HEIGHTS...TARENTUM AND CREIGHTON.
 
TAKE SHELTER INSIDE A STRONG BUILDING.  DO NOT STAND BY WINDOWS.
DON'T USE TELEPHONES OR APPLIANCES UNLESS IT'S AN EMERGENCY UNTIL THE
STORM HAS PASSED.  DO NOT DRIVE INTO LOW WATER CROSSINGS.

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

Local storm report, Jul 28, 12:04 PM EDT, 2 hours 22 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH, PA
1203 PM EDT MON JUL 28 1997

TIME(EST)  ....CITY LOCATION....     STATE...EVENT/REMARKS...
           ...COUNTY LOCATION...
1150 AM     COSHOCTON

Local storm report, Jul 28, 1:00 PM EDT, 1 hour 26 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH, PA
100 PM EDT MON JUL 28 1997

TIME(EST)  ....CITY LOCATION....     STATE...EVENT/REMARKS...
           ...COUNTY LOCATION...
1150 AM     COSHOCTON                OH    WIND DAMAGE
07/28/97    COSHOCTON                      TREE LIMBS DOWN

1249 PM     BARNESVILLE              OH    WIND DAMAGE
07/28/97    BELMONT                        BARN BLOWN DOWN

Local storm report, Jul 28, 1:01 PM EDT, 1 hour 25 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH, PA
100 PM EDT MON JUL 28 1997

TIME(EST)  ....CITY LOCATION....     STATE...EVENT/REMARKS...
           ...COUNTY LOCATION...
1150 AM     COSHOCTON                OH    WIND DAMAGE
07/28/97    COSHOCTON                      TREE LIMBS DOWN

1249 PM     BARNESVILLE              OH    WIND DAMAGE
07/28/97    BELMONT                        BARN BLOWN DOWN

Special weather statement, Jul 28, 2:04 PM EDT, 22 minutes before

PAZ021-031-030-032-0

Special weather statement, Jul 28, 2:15 PM EDT, 11 minutes before

PAZ013>016-020>023-029>032-WVZ001>004-012-021>023-041-MDZ001-282300-

SPECIAL WEATHER STATEMENT-  SEVERE THUNDERSTORM WATCH
NATIONAL WEATHER SERVICE PITTSBURGH PA
215 PM EDT MON JUL 28 1997

A SEVERE STORM WATCH IS IN EFFECT TIL 700 PM FOR THE FOLLOWING
COUNTIES...

IN WEST VIRGINIA
MARION... MONONAGALIA... PRESTON... TUCKER

IN PENNSYLVANIA
ALLEGHENY... WASHINGTON... GREENE... FAYETTE... WESTMORELAND

IN MARYLAND
GARRETT

A COLD FRONT WILL SLIDE SOUTHEAST ACROSS THE REGION THIS AFTERNOON.
SHOWERS AND THUNDERSTORMS...SOME THAT MAY BE SEVERE... WILL DEVELOP
ALONG AND AHEAD OF THE COLD FOR THE REMAINDER OF THE
AFTERNOON AND EARLY EVENING HOURS. AS A RESULT...A SEVERE
THUNDERSTORM WATCH HAS BEEN ISSUED UNTIL 700 PM FOR THE ABOVE COUNTIES.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS THAT CONDITIONS ARE
FAVORABLE FOR DAMAGING THUNDERSTORMS TO DEVELOP IN AND CLOSE TO
THE WATCH AREA.

HAVE A SAFE SHELTER NEARBY.  LISTEN FOR POSSIBLE WARNINGS AND BE
READY TO MOVE TO SAFE SHELTER IF THREATENING WEATHER APPROACHES.

STAY UPDATED WITH THE LATEST FORECASTS FROM NOAA WEATHER RADIO OR
YOUR FAVORITE RADIO...TV OR CABLE TV STATION.

Special weather statement, Jul 28, 2:17 PM EDT, 9 minutes before

PAZ013>016-020>023-029>032-WVZ001>004-012-021>023-041-MDZ001-282300-

SPECIAL WEATHER STATEMENT-  SEVERE THUNDERSTORM WATCH
NATIONAL WEATHER SERVICE PITTSBURGH PA
215 PM EDT MON JUL 28 1997

A SEVERE STORM WATCH IS IN EFFECT TIL 700 PM FOR THE FOLLOWING
COUNTIES...

IN WEST VIRGINIA
MARION... MONONAGALIA... PRESTON... TUCKER

IN PENNSYLVANIA
ALLEGHENY... WASHINGTON... GREENE... FAYETTE... WESTMORELAND

IN MARYLAND
GARRETT

A COLD FRONT WILL SLIDE SOUTHEAST ACROSS THE REGION THIS AFTERNOON.
SHOWERS AND THUNDERSTORMS...SOME THAT MAY BE SEVERE... WILL DEVELOP
ALONG AND AHEAD OF THE COLD FOR THE REMAINDER OF THE
AFTERNOON AND EARLY EVENING HOURS. AS A RESULT...A SEVERE
THUNDERSTORM WATCH HAS BEEN ISSUED UNTIL 700 PM FOR THE ABOVE COUNTIES.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS THAT CONDITIONS ARE
FAVORABLE FOR DAMAGING THUNDERSTORMS TO DEVELOP IN AND CLOSE TO
THE WATCH AREA.

HAVE A SAFE SHELTER NEARBY.  LISTEN FOR POSSIBLE WARNINGS AND BE
READY TO MOVE TO SAFE SHELTER IF THREATENING WEATHER APPROACHES.

STAY UPDATED WITH THE LATEST FORECASTS FROM NOAA WEATHER RADIO OR
YOUR FAVORITE RADIO...TV OR CABLE TV STATION.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 1:26 PM EDT	Severe Thunderstorm Warning	PBZ	Greene, Washington	64 min
Jul 28, 1:58 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette	62 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1997 Every 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.