Alert archive / Pennsylvania / Flash Flood Warnings in 1997
Flash Flood Warning 4, NWS State College, PA
NWS State College, PA issued this flash flood warning at Feb 5, 1997, 8:10 PM EST for Clearfield County, Pennsylvania. It was in force for 4 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
- Feb 5, 1997, 8:10 PM EST (01:10 UTC)
- Expired
- Feb 6, 1997, 12:15 AM EST
- In force
- 4 hr
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Clearfield County, PA
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 00:00Z, 1.2 hours before the alert went out and 152 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
- 507 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 49 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 060114 FFWCTP PAC033-060515- BULLETIN - EAS ACTIVATION REQUESTED FLOOD WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 810 PM EST WED FEB 5 1997 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A FLOOD WARNING EFFECTIVE UNTIL 1215 AM EST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN PENNSYLVANIA ...CLEARFIELD COUNTY ICE JAMS ALONG THE WEST BRANCH OF THE SUSQUEHANNA RIVER IN CLEARFIELD WERE CAUSING WATER TO BACK UP ALONG THE RIVER. SEVERAL ROADS HAVE ALREADY BEEN CLOSED DUE TO FLOOD WATERS. COUNTY OFFICIALS REPORT THAT THE RIVER HAS RISEN 2 FEET BETWEEN 3 AND 8 PM...AND CONTINUES TO RISE. IF YOU LIVE ALONG A FLOOD PRONE AREA IN CLEARFIELD COUNTY...YOU SHOULD MONITOR RIVER AND STREAM LEVELS. ICE JAMS CAN CAUSE RAPID RISES ALONG STREAMS AND RIVERS. OTHER LOCATIONS IN CLEARFIELD COUNTY MAY SEE FLOODING FROM ICE JAMS THIS EVENING. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER lDEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. JUNG &
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 Feb 5, 2:56 PM EST, 5 hours 14 minutes earlier.
Area forecast discussion, Feb 5, 2:56 PM EST, 5 hours 14 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 255 PM EST WED FEB 5 1997 ...CTP CWA WORKZONES OUT VIA PHLADMCTP TO PIT/PHL... ...DISCUSSION... 15 MIN VSBL IMAGERY SHOWG CLASSIC WRLY FLO CAA PATTERN ACRS PA... CLDS DEEPER IN WRN PA W/ LIGHT PRECIP. SIGNIFICANT AMNTS OF MOISTURE TRAPPED BLO INV NR 800 MB RUNNING INTO MTNS OF WRN PA LEADING TO LIGHT SNOW. SOME PATCHY FREEZING DRIZZLE REPORTED IN THE CNTRL/NRN MTNS. FCST MODEL SOUNDINGS THRU 0600 UTC TONIGHT AS WELL AS OBSERVED 1200 UTC PIT SOUNDING REVEAL THAT THE TEMPS IN THE SATURATED LOWER LAYERS ARE MAINLY -3C TO -9C. THUS... AREAS WITH SHALLOWER CLDS ARE NOT PRODUCING ENUF ICE CRYSTALS TO SUPPORT SNOW. THE TEMPS AT WHICH THE CLDS ARE FORMING ARE NOT LOW ENUF FOR MAXIMUM ICE-CRYSTAL GROWTH (DENDRITIC GROWTH REGIME BTWN -12C TO -15C). INSTEAD... WARM RAIN PROCESSES WERE LEADING TO THE LIGHT FZDZ IN THE UPSLOPE AREAS OF NW AND C PA. SO... MENTIONED PATCHY FZDZ IN WRKZONES FOR WRN MTNS WHICH ARE SEE STRGEST UVV/S IN THE SATURATED LOW-LVLS. A SHORT WAVE FEATURE WAS EVIDENT OVR THE MID-WEST ON THE SATL IMAGERY WHICH WILL SCOOT ACRS PA THIS EVE AND SUPPORT DEEPER CLDS IN THE LOWER-LVLS. ASCENT FROM THIS WAVE LIKELY WILL ONLY RE- ENFORCE THE OROGRAPHIC LIFT IN WRN PA. ETA MODEL IN PARTICULAR SHOWS SIGNS OF THE STRGR OROGRAPHIC LIFT THIS EVE IN WRN PA HVG A COLD POCKET AT 850 MB FORMING IN A STRIPE ALONG THE APPLCNS IN ASSCTN WITH HIGHER LOW-LVL RH/S. WITH INV NEAR 850 MB... LIFT OVR MTNS WAS PRODUCING SIG ADIABATIC COOLING AND MORE SATURATION DOWN LOW UNDER INV FOR WRN PA. THUS... THINK SN SHWRS WILL INCREASE THIS EVE FOR AWHILE IN WRN MTNS (HIGHEST POPS LAURELS). AFTER S/W PASSES E... ACVTY DIMINISHES TO FLURRIES AS WINDS SLOW DOWN INTO THE MTNS. AREAS E OF MTNS TONIGHT WILL SEE SOME MEASURE OF CLRG WHICH WILL BE MAXIMIZED OVER THE LWR SUS VLLY. "BUFFER ZONES" RUN FROM SC MTNS TO UPR SUS VLLY WHERE MENTIONED FLURRIES AND KEPT CLDS IN LATER. FOR THURSDAY... UPR LVL RDG AND SFC RDG WORK E IN TANDEM. SEE SOME CLDS HANGING ARND THE MTNS SO WENT PS AS AREAS E OF MTNS HV MO SUNNY AS WRLY FLO CONTS. THURSDAY NGT AND FRI... LOOK QUIET. LARGE TROF AND ASSCTD S/W FEATRES ACRS THE SWRN U.S PUSHES E. ANTHR NRN STREAM TROF TRIES TO PRESS SEWRD ACRS THE NERN U.S AND LEADS TO SIGNIFICANT CONFLUENCE AND A LARGE ANTICYCLONE PUSHING SEWRD TWD PA. SHRT WV/S FROM THIS LARGE SWRN U.S SYS SIMPLY GET SHEARED APART AS THEY RIDE INTO THE CONFLUENCE. CONFLUENCE ZONE AT 500 MB REACHS SRN PA BY F60 SO HV MORE CLDS SRN ZONES THAN NRN ZONES FOR FRIDAY. CLDS WILL BE MAINLY CI. ...LAKE SNOW OUTLOOK... 7 PM WED TO 7 AM THU...N 7 AM THU TO 7 PM THU...N 7 PM THU TO 7 AM FRI...N NICOSIA
Nearby
Flash Flood Warnings in Pennsylvania, 1997Every flash flood warning in 1997
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.