Alert archive / Pennsylvania / Flash Flood Warnings in 1999
Flash Flood Warning 10, NWS State College, PA
NWS State College, PA issued this flash flood warning at Jan 23, 1999, 5:25 PM EST for 4 counties in 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, 5:25 PM EST (22:25 UTC)
- Expired
- Jan 23, 1999, 11:25 PM EST
- In force
- 6 hr
- Issued by
- NWS State College, PA
- Area
- Whole counties
Counties Bedford County, PA, Blair County, PA, Cambria County, PA, Clearfield County, PA
The radar
The State College radar (KCCX), 64 km from the middle of the area, began a volume at 22:29 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 12:00Z, 10.4 hours before the alert went out and 135 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
- 947 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 581 m²/s²
- 0-3 km storm-relative helicity
- 627 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 232226 FFWCTP PAC009-013-021-033-111-240425- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 525 PM EST SAT JAN 23 1999 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A * FLASH FLOOD WARNING FOR... CLEARFIELD COUNTY IN WEST CENTRAL PENNSYLVANIA. CAMBRIA COUNTY IN WEST CENTRAL PENNSYLVANIA. SOMERSET COUNTY IN SOUTHWESTERN PENNSYLVANIA. BLAIR COUNTY IN SOUTH CENTRAL PENNSYLVANIA. BEDFORD COUNTY IN SOUTH CENTRAL PENNSYLVANIA. * UNTIL 1125 PM EST. * AT 520 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED BANDS OF HEAVY RAIN WORKING ACROSS THE LAUREL HIGHLANDS AND SOUTH CENTRAL MOUNTAINS. THIS RAIN...IN COMBINATION WITH MELTING SNOW...WILL CAUSE FLOODING OF AREA STREAMS AND CREEKS. THE RAIN AND SNOWMELT IS EXPECTED TO CONTINUE THROUGHOUT THE EVENING HOURS. DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD! BE ALERT FOR ICE JAM FLOODING...WHICH CAN CAUS\E RAPID RISES ON STREAMS AND CREEKS. .END/DNM/DN
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.
NWS State College, PA wrote its last area forecast discussion before this flash flood warning went out at Jan 23, 2:30 PM EST, 2 hours 55 minutes earlier.
Area forecast discussion, Jan 23, 2:30 PM EST, 2 hours 55 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 230 PM EST SAT JAN 23 1999 ...QPS...KEPTED FAIRLY CLOSE TO WHAT WE HAD EARLIER...USE 1238 PM VERSION...NOT 1228 PM VERSION...AS 1228 PM WAS SENT BY MISTAKE... ...WORK ZONES BY 3 PM... ...ZONES BY 345 PM... ...CHANGES... WILL KEEP FCST CLOSE TO WHAT WE HAVE OUT NOW. FOR MONDAY INTO THU...MAINLY DRY WX...CHC OF A SHOWER/SNOW SHOWER HERE AND THERE. ...DISC... WARM AIR JUST ENTERING OUR WESTERN AND SOUTHERN MOST PART OF OUR CWA. BAND OF SHOWERS OVER EASTERN OHIO...LIKELY TO HOLD TOGETHER ...AS W PA IN WARM SECTOR. TROPICAL AIR TRYING TO MOVE INTO EXTREME S PORTION OF LOWER SUSQ VLY. FEED OF MOISTURE NOW IN PLACE FROM THE SE ATLANTIC. EXPECT THAT HEAVIEST RAIN WILL BE OVER EXTREME NW AREA...GIVEN BETTER DYNAMICS...AND ACROSS SE PA...GIVEN FEED OFF SE ATLANTIC. MOST OF THE RAIN WILL BE BETWEEN 00Z AND 12Z. FOR SEVERE WX...WE ARE NOT OUTLOOK...NOR DO WE GET INTO THE BETTER DYNAMICS...AS SYSTEM SHEARS OUT. AN ISOLATED STORM COULD OCCUR EARLY ON THIS EVENING...BUT SHOULD NOT DO MUCH. FOR WIND...ISOLATED GUSTS LIKELY EARLY THIS EVENING ACROSS W SECTION...WILL KEEP WINDS UP IN ZONES. SHOULD BE UNDER ADVISORY LEVELS. FOR RAIN...WILL KEEP FLOOD WATCH UP...QPS LIKELY TO RANGE FROM 1.0 TO 1.5. LEVELS WILL COME CLOSE...GIVEN RAIN AND SNOW MELT. GUSTY WINDS AND HIGH DEWPOINTS WILL EAT AWAY AT A LOT OF SNOW. WILL HANDLE FOG AS PATCHY...LOOKS LIKE IT IS ON ITS WAY OUT. .CTP...FLASH FLOOD WATCH ENTIRE FA FOR TONIGHT AND SUNDAY. MARTIN
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 23, 5:25 PM EST | Flash Flood Warning | CTP | Somerset | 6 hr |
| Jan 23, 5:35 PM EST | Severe Thunderstorm Warning | CTP | Bedford | 50 min |
| Jan 23, 6:34 PM EST | Severe Thunderstorm Warning | CTP | Huntingdon | 46 min |
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.