Alert archive / Pennsylvania / Flash Flood Warnings in 1998
Flash Flood Warning 91, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this flash flood warning at Jun 20, 1998, 12:26 AM EDT for Westmoreland County, Pennsylvania. It was in force for 94 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
- Jun 20, 1998, 12:26 AM EDT (04:26 UTC)
- Expired
- Jun 20, 1998, 2:00 AM EDT
- In force
- 94 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Whole counties
County Westmoreland County, PA
The radar
The Pittsburgh radar (KPBZ), 68 km from the middle of the area, began a volume at 04:27 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, 4.4 hours before the alert went out and 55 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.
- Mixed-layer CAPE
- 575 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1030 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPIT 200426 FFWPIT PAC129-200600- BULLETIN - EAS ACTIVIATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE PITTSBURGH PA 1226 AM EDT SAT JUN 20 1998 THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHEASTERN WESTMORELAND COUNTY IN SOUTHWESTERN PENNSYLVANIA. * UNTIL 200 AM EDT. * BETWEEN 1130 PM AND 1215 AM...NATIONAL WEATHER SERVICE DOPPLER ESTIMATES THAT BETWEEN ONE AND TWO INCHES OF RAIN HAS FALLEN NEAR THE LAUREL RIDGE STATE PARK WHICH CONTAINS THE BIG SPRING RESERVOIR. * THUNDERSTORM WITH HEAVY RAIN WILL CONTINUE IN EXTREME NORTHEAST WESTMORELAND COUNTY THROUGH 1 AM. DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD! .END/PM
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 19, 8:15 PM EDT, 4 hours 11 minutes before
STORM REPORT...............AMENDED..................
NATIONAL WEATHER SERVICE PITTSBURGH PA
815 PM EDT FRI JUN 19 1998
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0520 AM BEAVER FALLS PA WIND DAMAGE
06/19/98 BEAVER MICROBURST
WIDTH 350 YDS LENGTH 700 YDS.
MANY TREES TOPPLED OR SNAPPED.
TWO TELEPHONES SNAPPED. ONE
PORCH BLOWN OFF HOUSE.
ESTIMATED WIND MAXIMUM OF 80
MPH.
0520 AM BEAVER FALLS PA 1.00 INCH HAIL
06/19/98 BEAVERLocal storm report, Jun 19, 8:15 PM EDT, 4 hours 11 minutes before
STORM REPORT...............AMENDED..................
NATIONAL WEATHER SERVICE PITTSBURGH PA
815 PM EDT FRI JUN 19 1998
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0520 AM BEAVER FALLS PA WIND DAMAGE
06/19/98 BEAVER MICROBURST
WIDTH 350 YDS LENGTH 700 YDS.
MANY TREES TOPPLED OR SNAPPED.
TWO TELEPHONES SNAPPED. ONE
PORCH BLOWN OFF HOUSE.
ESTIMATED WIND MAXIMUM OF 80
MPH.
0520 AM BEAVER FALLS PA 1.00 INCH HAIL
06/19/98 BEAVERThe office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 12:01 AM EDT | Flash Flood Warning | PBZ | Indiana | 119 min |
Nearby
Flash Flood Warnings in Pennsylvania, 1998Every flash flood warning in 1998
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.