Alert archive / Pennsylvania / Flash Flood Warnings in 1990
Flash Flood Warning 9, NWS State College, PA
NWS State College, PA issued this flash flood warning at Oct 13, 1990, 5:42 AM EDT for 4 counties in Pennsylvania. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Oct 13, 1990, 5:42 AM EDT (09:42 UTC)
- Expired
- Oct 13, 1990, 7:45 AM EDT
- In force
- 2 hr
- Issued by
- NWS State College, PA
- Area
- Whole counties
Counties Northumberland County, PA, Perry County, PA, Snyder County, PA, Union 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
Washington/Dulle, VA (KIAD), launched 00:00Z, 9.7 hours before the alert went out and 202 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
- 22 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 775 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 164 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KHAR 130942 RRA
FFWHAR
PAC097-109-119-099-131145-
BULLETIN - EBS ACTIVATION REQUESTED
SMALL STREAM AND URBAN FLOOD WARNING
NATIONAL WEATHER SERVICE HARRISBURG PA
542 AM EDT SAT OCT 13 1990
THE NATIONAL WEATHER SERVICE IN HARRISBURG HAS ISSUED A
SMALL STREAM AND URBAN FLOOD WARNING EFFECTIVE UNTIL 745 AM EDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN CENTRAL PENNSYLVANIA
...NORTHUMBERLAND...SNYDER...UNION
IN SOUTH CENTRAL PENNSYLVANIA
...PERRY
AT 530 AM WEATHER SERVICE RADAR IN HARRISBURG INDICATED AN AREA 75
MILES WIDE OF RAIN MIXED WITH RAINSHOWERS AND EMBEDDED THUNDERSTORMS
OVER MOST OF CENTRAL PENNSYLVANIA. SEVERAL REPORTS OF LOCAL STREET
FLOODING ALONG WITH SMALL STREAMS AND CREEKS FLOODING THEIR BANKS HAVE
BEEN REPORTED BY STATE POLICE...EMERGENCY MANAGEMENT
PERSONNEL...PRIVATE CITIZENS.
THE AREA OF RAIN AND RAINSHOWERS WAS MOVING TOWARDS THE NORTH AT 25
MILES AN HOUR.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
WSO HAR CRUZThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 13, 1:49 AM EDT | Flash Flood Warning | CTP | Northumberland, Perry | 56 min |
| Oct 13, 2:25 AM EDT | Flash Flood Warning | CTP | Cumberland, Perry | 65 min |
| Oct 13, 2:25 AM EDT | Flash Flood Warning | CTP | Northumberland, Union | 65 min |
| Oct 13, 3:44 AM EDT | Flash Flood Warning | CTP | Northumberland, Snyder, Union | 61 min |
| Oct 13, 3:44 AM EDT | Flash Flood Warning | CTP | Cumberland, Juniata, Perry | 61 min |
| Oct 13, 4:50 AM EDT | Flash Flood Warning | CTP | Northumberland, Perry, Snyder, Union | 55 min |
| Oct 13, 6:50 AM EDT | Flash Flood Warning | CTP | Bradford | 4 hr |
| Oct 13, 7:55 AM EDT | Flash Flood Warning | CTP | Lycoming | 4 hr |
| Oct 13, 9:44 AM EDT | Flash Flood Warning | CTP | Adams | 3 hr |
| Oct 13, 9:50 AM EDT | Flash Flood Warning | CTP | Lycoming | 4 hr |
| Oct 13, 10:28 AM EDT | Flash Flood Warning | CTP | Union | 3 hr |
| Oct 13, 3:49 PM EDT | Flash Flood Warning | CTP | Cumberland | 4 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.