Alert archive / Pennsylvania / Flash Flood Warnings in 1990
Flash Flood Warning 69, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this flash flood warning at Jul 15, 1990, 7:08 AM EDT for Butler County, Pennsylvania. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jul 15, 1990, 7:08 AM EDT (11:08 UTC)
- Expired
- Jul 15, 1990, 10:00 AM EDT
- In force
- 3 hr
- Issued by
- NWS Pittsburgh, PA
- Area
- Whole counties
County Butler County, PA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 00:00Z, 11.1 hours before the alert went out and 58 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
- 196 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 784 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 123 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPIT 151109 FFWPIT PAC019-WVC009-029-151400- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE PITTSBURGH PA 708 AM EDT SUN JUL 15 1990 THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS EXTENDED THE FLASH FLOOD WARNING UNTIL 1000 AM EDT FOR THE FOLLOWING LOCATIONS... IN WEST PENNSYLVANIA ...BUTLER COUNTY IN THE WEST VIRGINIA PANHANDLE ...BROOKE COUNTY...HANCOCK COUNTY HEAVY RAINS CONTINUE OVER BUTLER COUNTY IN WESTERN PENNSYLVANIA. OVER AN INCH OF RAIN HAS BEEN REPORTED IN CRANBERRY TOWNSHIP. THE GROUND IS SATURATED AND CONTUNUED HEAVY RAINS WILL BRING FLOODING. IN ADDITION...FLOODING CONTINUES IN BOTH BROOKE AND HANCOCK COUNTIES IN THE NORTHERN WEST VIRGINIA PANHANDLE. ALTHOUGH ONLY LIGHT RAIN IS FALLING IN THESE COUNTIIES NOW...FLOODING CONTINUES. BROOKE COUNTY EMERGENCY MANAGEMENT REPORTED NUMEROUS MUDSLIDES IN THE COUNTY AND ROUTE 2 IS FLOODED NEAR WELLSBURG. HANCOCK COUNTY EMERGENCY MANAGEMENT ALSO REPORTED NUMEROUS CREEK AND ROADWAY FLOODING. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT. IT'S IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS SH2OULD AVOID CAMPING ALONG STREAMS OR CREEKS DURING THREATENING RAINS.
The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 11:13 PM EDT | Flash Flood Warning | PBZ | Beaver, Washington | 5 hr |
| Jul 14, 11:13 PM EDT | Flash Flood Warning | PBZ | Greene | 5 hr |
| Jul 15, 2:45 AM EDT | Flash Flood Warning | PBZ | Beaver, Washington | 5 hr |
| Jul 15, 2:45 AM EDT | Flash Flood Warning | PBZ | Greene | 5 hr |
| Jul 15, 4:43 AM EDT | Flash Flood Warning | PBZ | Allegheny, Butler | 3 hr |
| Jul 15, 12:36 PM EDT | Flash Flood Warning | PBZ | Fayette | 2 hr |
| Jul 15, 1:00 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 2 hr |
| Jul 15, 2:30 PM EDT | Flash Flood Warning | PBZ | Somerset | 2 hr |
| Jul 15, 2:30 PM EDT | Flash Flood Warning | PBZ | Indiana | 2 hr |
| Jul 15, 2:52 PM EDT | Flash Flood Warning | PBZ | Beaver, Butler | 2 hr |
| Jul 15, 3:15 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 75 min |
| Jul 15, 3:50 PM EDT | Flash Flood Warning | PBZ | Bedford, Cambria | 2 hr |
| Jul 15, 4:17 PM EDT | Flash Flood Warning | PBZ | Blair, Clearfield | 3 hr |
| Jul 15, 4:53 PM EDT | Flash Flood Warning | PBZ | Beaver | 3 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 1990Every flash flood warning in 1990
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.