Alert archive / Pennsylvania / Flash Flood Warnings in 1997
Flash Flood Warning 30, NWS State College, PA
NWS State College, PA issued this flash flood warning at Sep 28, 1997, 11:23 PM EDT for 4 counties in Pennsylvania. It was in force for 5 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
- Sep 28, 1997, 11:23 PM EDT (03:23 UTC)
- Expired
- Sep 29, 1997, 4:20 AM EDT
- In force
- 5 hr
- Issued by
- NWS State College, PA
- Area
- Whole counties
Counties Blair County, PA, Cambria County, PA, Centre County, PA, Clearfield County, PA
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 00:00Z, 3.4 hours before the alert went out and 153 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
- 528 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 72 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 290325 FFWCTP PAC013-021-027-033-290820- BULLETIN - EAS ACTIVATION REQUESTED FLOOD WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 1123 PM EDT SUN SEP 28 1997 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A FLOOD WARNING EFFECTIVE UNTIL 420 AM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN WEST CENTRAL PENNSYLVANIA ...CLEARFIELD COUNTY ...CAMBRIA COUNTY IN CENTRAL PENNSYLVANIA ...CENTRE COUNTY IN SOUTH CENTRAL PENNSYLVANIA ...BLAIR COUNTY AT 1120 PM EDT... DOPPLER RADAR FROM STATE COLLEGE SHOWED A LARGE AREA OF HEAVY RAINFALL IN THE CENTRAL MOUNTAINS OF PENNSYLVANIA. MANY LOCATIONS HAVE RECEIVED BETWEEN 1.5 AND 2.5 INCHES OF RAINFALL SINCE THIS AFTERNOON. IN CENTRE COUNTY... THERE HAVE BEEN REPORTS OF FLOODED ROADWAYS IN THE STATE COLLEGE AREA. TANNERYSVILLE AND EBENSBURG IN CAMBRIA COUNTY AND SEVERAL LOCATIONS IN BLAIR COUNTY ALSO HAVE REPORTED SOME FLOODED ROADWAYS. A ROCK-SLIDE WAS REPORTED IN THE FERNDALE AREA OF CAMBRIA COUNTY. MODERATE TO HEAVY RAINFALL WILL CONTINUE IN CENTRE... CLEARFIELD... BLAIR AND CAMBRIA COUNTIES UNTIL AROUND 1 AM. THE ADDITIONAL RAINFALL WILL CONTINUE TO CAUSE FLOODING OF POOR DRAINAGE AND URBANIZED AREAS.j SOME OF THE SMALLER STREAMS ALSO WILL HAVE FLOODING PROBLEMS OVERNIGHT. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. NEVER CROSS A FLOODED ROADWAY IN YOUR VEHICLE. NICOSIA &
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 Sep 28, 8:13 PM EDT, 3 hours 10 minutes earlier.
Area forecast discussion, Sep 28, 8:13 PM EDT, 3 hours 10 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 810 PM EDT SUN SEP 28 1997 ...SUGGESTIONS... OVERNIGHT...ZONES LOOK PRETTY GOOD. WOULD ADD "HEAVY AT TIMES" WORDING FOR THE MID AND UPPER SUSQ COUNTIES AND NRN MTS. FOR MONDAY...SUGGEST TO GO MORE PESSIMISTIC AS FAR AS CLOUDS AND SHOWERS...BUT THIS MAY BE AN OVERNIGHT DECISION. ...DISCUSSION... AS RAIN EVENT UNFOLDS ACROSS THE AREA THIS EVENING IT IS STARTING TO BECOME EVIDENT THAT MOST SIGNIFICANT RAINFALL WILL BE ACROSS THE CENTRAL PORTIONS OF THE STATE. CURRENT RADAR LOOPS FROM KCCX AND KLWX SHOWS THAT BEST RAIN IS MORNING INTO THE SOUTHWEST PORTION OF THE CWA ATTM...CORRESPONDING NICELY TO THE UPWARD MOTION BULLSEYE DEPICTED BY THE NGM. IN FACT...THE NGM SEEMS TO HAVE A GOOD HANDLE OF THE PLACEMENT OF THE SIGNIFICANT RAFL SO FAR...AND HAVE SHADED THAT WAY IN THE PREPARATION OF QPF FORECASTS. HAVE HOWEVER BUMPED UP PCPN AMOUNTS CLOSER TO THE MESO ETA. THE MESO ETA SEEMS TO BE DOING A GOOD JOB PICKING OUT THE DETAIL OF THE LLJ (850) WHICH SEEMS TO BE DRIVING THE BEST PCPN TONIGHT. THIS MODEL STRENGTHENS THE LLJ TO 50+ KNOTS BY 06Z. SFC MOISTURE CONVERGENCE WOULD SUGGEST THE HEAVIEST RAIN CONTINUING NNEWARD OVERNIGHT...PRODUCING THE HEAVIEST SWATH OF PCPN FROM SOMERSET THROUGH CENTRE AND IPT INTO THE TIOGA CO. APPROACHING UPPER LEVEL TROF WILL HELP TO QUICKLY EJECT THE LIFTING SOUTHERN STREAM DISTURBANCE...AND WINDS ARE WESTERLY BY 12Z TOMORROW...IN EFFECT ENDING THE RAIN ACROSS THE CWA BY MORNING. THIS FAST MOVEMENT WILL HELP PRECLUDE RAFL AMOUNT FROM GETTING TOO OUT OF HAND. STILL...I AM EXPECTING SOME 1 TO 1.5 INCH AMOUNTS OVERNIGHT IN SOME AREAS...BUT PROBABLY NOTHING OVER 2 INCHES. FOR TOMORROW...DIVING UL JET AND STRONG CAA WILL KEEP THINGS MURKY. ALTHOUGH THERE IS SIGNIFICANT DRYING ABOVE 700 MB...LOW LEVEL MOISTURE IS VERY ABUNDANT AND CLOUDS SHOULD PREVAIL...ALONG WITH SCATTERED SHOWERS. BEST CHANCE OF SEEING SOME SUNSHINE WILL BE IN THE SOUTHEAST (LOWER SUSQ). JUNG
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.