Alert archive / Pennsylvania / Flash Flood Warnings in 1995

Flash Flood Warning 18, NWS Pittsburgh, PA

June 10, 1995Allegheny County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Jun 10, 1995, 9:13 PM EDT for Allegheny County, Pennsylvania. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jun 10, 1995, 9:13 PM EDT (01:13 UTC)
Expired
Jun 11, 1995, 12:15 AM EDT
In force
3 hr
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 01:16 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 00:00Z, 1.2 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-pSkew-T log-p diagram, Pittsburgh, PA at 00:00Z on 1995-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1108 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 00:00Z on 1995-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 253 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
1108 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
829 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
253 m²/s²
0-3 km storm-relative helicity
285 m²/s²
Significant tornado parameter
1.6
Supercell composite
7.6

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 flash flood 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, Jun 10, 7:01 PM EDT, 2 hours 12 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
700 PM EDT SAT JUN 10 1995

0105 PM    CARROLL
TIME(EDT)  .....CITY.....            STATE ...EVENT/REMARKS...
           .....COUNTY.....

0230 PM    MT WASHINGTON(PITTSBURGH) PA   LARGE TREE DOWN
06/10/95   ALLEGHENY COUNTY

0245 PM    NEAR GREENSBURG           PA   NUMEROUS TREES AND POWER
06/10/95   WESTMORELAND COUNTY                  LINES DOWN

0258 PM    OAKLAND                   MD   LARGE TREE LIMBS DOWN
06/10/95   GARRETT COUNTY

0500 PM    LANCASTER                 OH   6"-12" TREES DOWN
06/10/95   MUSKINGUM COUNTY                2 BUILDINGS DAMAGED

0515 PM    DILLON FALLS              OH   LARGE TREE DOWN
06/10/95   MUSKINGUM COUNTY

0530 PM    COOPER MILL               OH   LARGE TREES DOWN
06/10/95   MUSKINGUM COUNTY

0530 PM    ROSE HILL                 OH   LARGE TREES DOWN
06/10/95   MUSKINGUM COUNTY
Local storm report, Jun 10, 7:02 PM EDT, 2 hours 11 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
700 PM EDT SAT JUN 10 1995

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

0230 PM    MT WASHINGTON(PITTSBURGH) PA   LARGE TREE DOWN
06/10/95   ALLEGHENY COUNTY

0245 PM    NEAR GREENSBURG           PA   NUMEROUS TREES AND POWER
06/10/95   WESTMORELAND COUNTY                  LINES DOWN

0258 PM    OAKLAND                   MD   LARGE TREE LIMBS DOWN
06/10/95   GARRETT COUNTY

0500 PM    LANCASTER                 OH   6"-12" TREES DOWN
06/10/95   MUSKINGUM COUNTY                2 BUILDINGS DAMAGED

0515 PM    DILLON FALLS              OH   LARGE TREE DOWN
06/10/95   MUSKINGUM COUNTY

0530 PM    COOPER MILL               OH   LARGE TREES DOWN
06/10/95   MUSKINGUM COUNTY

0530 PM    ROSE HILL                 OH   LARGE TREES DOWN
06/10/95   MUSKINGUM COUNTY
Special weather statement, Jun 10, 8:25 PM EDT, 48 minutes before
PAZ007>009-013>016-020>023-029>032-WVZ001>004-012-021>023-041-
OHZ039>041-048>050-057>059-068-069-MDZ001-110230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
825 PM EDT SAT JUN 10 1995

...THE SEVERE THUNDERSTORM WATCH CANCELLED FOR WESTERN PENNSYLVANIA AND
NORTHERN WEST VIRGINIA...

THE SEVERE THUNDERSTORM WATCH FOR SOUTHWESTERN PENNSYLVANIA AND
NORTHERN WEST VIRGINIA HAS BEEN CANCELLED.

SOME SCATTERED THUNDERSTORMS WILL CONTINUE ACROSS WESTERN PENNSYLVANIA
AND NORTHERN WEST VIRGNIA UNTIL MIDNIGHT...BUT THERE WILL BE LITTLE
RISK OF DAMAGING WINDS OR LARGE HAIL.  SOME OF THE THUNDERSTORMS MAY
CONTAIN LOCALLY HEAVY DOWNPOURS THAT COULD CAUSE FLOODING IN POOR
DRAINAGE AREAS AND PRODUCE PONDING OF WATER ON ROAD SURFACES.

DAVIS/DRZAL/PALKO/REED/VERNO
Special weather statement, Jun 10, 8:26 PM EDT, 47 minutes before
PAZ007>009-013>016-020>023-029>032-WVZ001>004-012-021>023-041-
OHZ039>041-048>050-057>059-068-069-MDZ001-110230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
825 PM EDT SAT JUN 10 1995

...THE SEVERE THUNDERSTORM WATCH CANCELLED FOR WESTERN PENNSYLVANIA AND
NORTHERN WEST VIRGINIA...

THE SEVERE THUNDERSTORM WATCH FOR SOUTHWESTERN PENNSYLVANIA AND
NORTHERN WEST VIRGINIA HAS BEEN CANCELLED.

SOME SCATTERED THUNDERSTORMS WILL CONTINUE ACROSS WESTERN PENNSYLVANIA
AND NORTHERN WEST VIRGNIA UNTIL MIDNIGHT...BUT THERE WILL BE LITTLE
RISK OF DAMAGING WINDS OR LARGE HAIL.  SOME OF THE THUNDERSTORMS MAY
CONTAIN LOCALLY HEAVY DOWNPOURS THAT COULD CAUSE FLOODING IN POOR
DRAINAGE AFREAS AND PRODUCE PONDING OF WATER ON ROAD SURFACES.

DAVIS/DRZAL/PALKO/REED/VERNO
Special weather statement, Jun 10, 8:27 PM EDT, 46 minutes before
PAZ007>009-013>016-020>023-029>032-WVZ001>004-012-021>023-041-
OHZ039>041-048>050-057>059-068-069-MDZ001-110230-

SPECIAL WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE PITTSBURGH PA
827 PM EDT SAT JUN 10 1995

...THE SEVERE THUNDERSTORM WATCH CANCELLED FOR WESTERN PENNSYLVANIA...
EASTERN OHIO AND NORTHERN WEST VIRGINIA...

THE SEVERE THUNDERSTORM WATCH FOR SOUTHWESTERN PENNSYLVANIA...EASTERN
OHIO AND NORTHERN WEST VIRGINIA HAS BEEN CANCELLED.

SOME SCATTERED THUNDERSTORMS WILL CONTINUE ACROSS WESTERN PENNSYLVANIA
EASTERN OHIO AND NORTHERN WEST VIRGNIA UNTIL MIDNIGHT...BUT THERE WILL
BE LITTLE RISK OF DAMAGING WINDS OR LARGE HAIL.  SOME OF THE
THUNDERSTORMS MAY CONTAIN LOCALLY HEAVY DOWNPOURS THAT COULD CAUSE
FLOODING IN POOR DRAINAGE AREAS AND PRODUCE PONDING OF WATER ON ROAD
SURFACES.

DAVIS/DRZAL/PALKO/REED/VERNO
Special weather statement, Jun 10, 8:28 PM EDT, 45 minutes before
PAZ007>009-013>016-020>023-029>032-WVZ001>004-012-021>023-041-
OHZ039>041-048>050-057>059-068-069-MDZ001-110230-

SPECIAL WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE PITTSBURGH PA
827 PM EDT SAT JUN 10 1995

...THE SEVERE THUNDERSTORM WATCH CANCELLED FOR WESTERN PENNSYLVANIA...
EASTERN OHIO AND NORTHERN WEST VIRGINIA...

THE SEVERE THUNDERSTORM WATCH FOR SOUTHWESTERN PENNSYLVANIA...EASTERN
OHIO AND NORTHERN WEST VIRGINIA HAS BEEN CANCELLED.

SOME SCATTERED THUNDERSTORMS WILL CONTINUE ACROSS WESTERN PENNSYLVANIA
EASTERN OHIO AND NORTHERN WEST VIRGNIA UNTIL MIDNIGHT...BUT THERE WILL
BE LITTLE RISK OF DAMAGING WINDS OR LARGE HAIL.  SOME OF THE
THUNDERSTORMS MAY CONTAIN LOCALLY HNEAVY DOWNPOURS THAT COULD CAUSE
FLOODING IN POOR DRAINAGE AREAS AND PRODUCE PONDING OF WATER ON ROAD
SURFACES.

DAVIS/DRZAL/PALKO/REED/VERNO

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 10, 9:21 PM EDTFlash Flood WarningPBZMercer3 hr
Jun 10, 10:55 PM EDTFlash Flood WarningPBZButler3 hr
Jun 11, 2:41 PM EDTSevere Thunderstorm WarningPBZButler, Venango49 min
Jun 11, 3:02 PM EDTFlash Flood WarningPBZLawrence3 hr
Jun 11, 3:07 PM EDTSevere Thunderstorm WarningPBZClarion68 min
Jun 11, 3:45 PM EDTSevere Thunderstorm WarningPBZJefferson45 min
Jun 11, 3:50 PM EDTSevere Thunderstorm WarningPBZFayette, Washington40 min
Jun 11, 4:05 PM EDTFlash Flood WarningPBZClarion115 min
Jun 11, 4:30 PM EDTSevere Thunderstorm WarningPBZFayette45 min
Jun 11, 4:48 PM EDTFlash Flood WarningPBZButler2 hr
Jun 11, 4:51 PM EDTSevere Thunderstorm WarningPBZGreene54 min
Jun 11, 5:11 PM EDTFlash Flood WarningPBZArmstrong109 min
Jun 11, 2:54 PM EDTFlash Flood WarningPBZCarroll3 hr
Jun 11, 3:18 PM EDTSevere Thunderstorm WarningPBZJefferson27 min

Nearby

Flash Flood Warnings in Pennsylvania, 1995Every flash flood warning in 1995

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.