Alert archive / Pennsylvania / Flash Flood Warnings in 1990
Flash Flood Warning 14, NWS State College, PA
NWS State College, PA issued this flash flood warning at Oct 13, 1990, 10:28 AM EDT for Union County, Pennsylvania. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Oct 13, 1990, 10:28 AM EDT (14:28 UTC)
- Expired
- Oct 13, 1990, 1:30 PM EDT
- In force
- 3 hr
- Issued by
- NWS State College, PA
- Area
- Whole counties
County 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 12:00Z, 2.5 hours before the alert went out and 226 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
- 372 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 602 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 120 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KHAR 131427 RRA
FFWHAR
PAC119-131730-
BULLETIN - EBS ACTIVATION REQUESTED
SMALL STREAM AND URBAN FLOOD WARNING
NATIONAL WEATHER SERVICE HARRISBURG PA
1028 AM EDT SAT OCT 13 1990
THE NATIONAL WEATHER SERVICE IN HARRISBURG HAS ISSUED A
SMALL STREAM AND URBAN FLOOD WARNING EFFECTIVE UNTIL 130 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN CENTRAL PENNSYLVANIA
...UNION
AT 1020 UNION COUNTY CONTROL REPORTED SOME STREAMS OUT OF THEIR BANKS
THROUGHOUT THE COUNTY. THE HEAVY RAINS FROM EARLY THIS MORNING HAVE
MOVED EAST AND NORTH OF THE COUNTY...ALTHOUGH SOME LIGHT RAIN
CONTINUES OVER THE REGION.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH FLOOD DEyATHS 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.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
Special weather statement, Oct 13, 9:19 AM EDT, 1 hour 9 minutes before
PAZ009-131430-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HARRISBURG PA.
910 AM EDT SAT OCT 13 1990
...SMALL STREAM FLOOD WATCH REMAINS IN EFFECT FOR ALL THE SUSQUEHANNA
VALLEY...
...THUNDERSTORMS WITH HEAVY RAIN MOVING THROUGH THE EASTERN PORTIONS OF
THE LOWER SUSQUEHANNA VALLEY...
AT 905 AM RADAR SHOWED A BROKEN BAND OF THUNDERSTORMS REACHING FROM
NORTHERN DAUPHIN COUNTY...SOUTH TO JUST EAST OF HARRISBURG AND ON SOUTH
TO NEAR HANOVER IN YORK COUNTY. RAIN AND SCATTERED SHOWERS COVERED MOST
OF THE REMAINDER OF THE SUSQUEHANNA VALLEY.
THE THUNDERSTORMS WERE MOVING NORTH AROUND 15 MILES AN HOUR AND THE RAIN
AND SHOWERS WERE MOVING NORTH NORTHEAST AROUND 20 TO 25 MILES AN HOUR.
WSO HAR JORDANSpecial weather statement, Oct 13, 10:13 AM EDT, 15 minutes before
PAZ009-131545-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HARRISBURG PA.
1010 AM EDT SAT OCT 13 1990
...SMALL STREAM FLOOD WATCH REMAINS IN EFFECT FOR ALL THE SUSQUEHANNA
VALLEY...
...SCATTERED THUNDERSTORMS CONTINUE MOVING THORUGH EASTERN PORTIONS OF
THE LOWER SUSQUEHANNA VALLEY...
AT 1005 AM RADAR SHOWED A FEW SACTTERED THUNDERSTORMS REACHING FROM
NORTHERN LEBANON COUNTY...SOUTH TO JUST EAST OF MIDDLETOWN AND ON SOUTH
TO NEAR HANOVER IN YORK COUNTY. RAIN AND SCATTERED SHOWERS COVERED MOST
OF THE REMAINDER OF THE SUSQUEHANNA VALLEY.
THE THUNDERSTORMS WERE MOVING NORTH AROUND 15 MILES AN HOUR AND THE RAIN
AND SHOWERS WERE MOVING NORTH NORTHEAST AROUND 20 MILES AN HOUR.D
WSO HAR JORDANThe 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, 5:42 AM EDT | Flash Flood Warning | CTP | Northumberland, Perry, Snyder, Union | 2 hr |
| 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, 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.