Alert archive / Pennsylvania / Flash Flood Warnings in 1999
Flash Flood Warning 13, NWS State College, PA
NWS State College, PA issued this flash flood warning at Jan 23, 1999, 10:40 PM EST for Centre County, Pennsylvania. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jan 23, 1999, 10:40 PM EST (03:40 UTC)
- Expired
- Jan 24, 1999, 4:40 AM EST
- In force
- 6 hr
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Centre County, PA
The radar
The State College radar (KCCX), 15 km from the middle of the area, began a volume at 03:39 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, 3.7 hours before the alert went out and 200 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 902 m above ground
- 0-6 km bulk shear
- 72 kt
- 0-1 km storm-relative helicity
- 383 m²/s²
- 0-3 km storm-relative helicity
- 330 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 KCTP 240341 FFWCTP PAC027-240940- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 1040 PM EST SAT JAN 23 1999 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRE COUNTY IN CENTRAL PENNSYLVANIA. * UNTIL 440 AM EST. * AT 1035 PM EST...SPOTTERS REPORTED HEAVY RAIN OVER THE LAST FEW HOURS. THIS HAS CAUSED SPRING CREEK NEAR LEMONT AND HOUSERVILLE TO RISE RAPIDLY. H BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGER OF FLOODING. NEVER ATTEMPT TO DRIVE YOU CAR THROUGH FLOODED ROADWAYS...THE WATER DEPTH MAY BE TOO DEEP TO ALLOW SAFE PASSAGE. .END/GARTNER
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 23, 7:32 PM EST | Flash Flood Warning | CTP | Huntingdon | 6 hr |
| Jan 23, 11:01 PM EST | Flash Flood Warning | CTP | Juniata, Mifflin | 6 hr |
| Jan 24, 1:58 AM EST | Flash Flood Warning | CTP | Huntingdon | 3 hr |
| Jan 24, 3:58 AM EST | Flash Flood Warning | CTP | Northumberland, Union | 4 hr |
| Jan 24, 4:39 AM EST | Flash Flood Warning | CTP | Centre, Huntingdon, Juniata, Mifflin | 3 hr |
| Jan 24, 7:51 AM EST | Flash Flood Warning | CTP | Centre | 4 hr |
| Jan 24, 7:51 AM EST | Flash Flood Warning | CTP | Juniata | 4 hr |
| Jan 24, 8:00 AM EST | Flash Flood Warning | CTP | Columbia, Northumberland | 4 hr |
| Jan 24, 8:00 AM EST | Flash Flood Warning | CTP | Union | 4 hr |
| Jan 24, 9:23 AM EST | Flash Flood Warning | CTP | Huntingdon | 3 hr |
| Jan 24, 11:59 AM EST | Flash Flood Warning | CTP | Huntingdon | 4 hr |
| Jan 24, 11:59 AM EST | Flash Flood Warning | CTP | Columbia | 4 hr |
| Jan 24, 11:59 AM EST | Flash Flood Warning | CTP | Union | 4 hr |
| Jan 24, 1:16 PM EST | Flash Flood Warning | CTP | Lycoming | 3 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 1999Every flash flood warning in 1999
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.