Alert archive / Pennsylvania / Flash Flood Warnings in 1995

Flash Flood Warning 62, NWS State College, PA

July 28, 1995Cambria County, Pennsylvania

NWS State College, PA issued this flash flood warning at Jul 28, 1995, 5:53 PM EDT for Cambria County, Pennsylvania. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Jul 28, 1995, 5:53 PM EDT (21:53 UTC)
Expired: Jul 28, 1995, 9:00 PM EDT
In force: 3 hr
Issued by: NWS State College, PA
Area: Whole counties

County Cambria County, PA

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 9.9 hours before the alert went out and 118 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 406 J/kg
Mixed-layer CIN: -119 J/kg
Mixed-layer LCL: 1076 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KCTP 282152
FFWCTP
PAC021-290100-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
553 PM EDT FRI JUL 28 1995
 
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  900 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS......
 
IN  PENNSYLVANIA
 
   ...CAMBRIA COUNTY
 
AT 550 PM DOPPLER RADAR SHOWED SLOW MOVING THUNDERSTORMS FROM EAST OF
JOHNSTOWN TO NEAR PORTAGE AND CRESSON OVER SOUTHEASTERN CAMBRIA COUNTY.
THESE STORMS WILL CONTINUE SLOWLY NORTHEAST AND CAUSE LOCALIZED FLOODING
ALONG THEIR PATHS.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.
 
LA CORTE

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 Jul 28, 2:05 PM EDT, 3 hours 48 minutes earlier.

Area forecast discussion, Jul 28, 2:05 PM EDT, 3 hours 48 minutes before

CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
205 PM EDT THU JUL 27 1995

...SHORT TERM...
TRW DVLG IN WRN PA ATTM WHERE ADAP SHOWS LI/S TO -9. LEFT-OVER
OUTFLO FROM THIS MORN/S CONVTN (SEEN ON ERLR VSBL IMAGERY) POSSBLY
HAS TRIGGERED CONVTN. WV IMAGERY CONTS TO SHOW EWRD PROGRESSION OF
UPR LVL S/W TWD PA ALSO HELPING SUPPORT CONVTN. THIS MORN/S 500 MB
UPR AIR CHART AND 12Z MODEL RUNS SHOWS COOLER AIR AT 500 MB
PRECEDING S/W TROF AXIS WHICH WAS STEEPENING LAPSE RATES ACRS WRN
PA ATTM. LATEST ADAP CHARTS SHOW BEST SFC MOISTURE CONV TO THE E OF
THIS DVLPG CONVTN IN CNTRL PA WHICH SUGGESTS ACVTY WILL HOLD
TOGETHER AND CONT TO DVLP AS IT MOVS INTO CNTRL PA. SLIGHTLY MORE
STBL AIR ACRS CNTRL PA WITH DWPTS IN THE UPR 60S WON/T HELP BUT
SHUD STILL BE ENUF TO SUPPORT CNVTN LATE AFTRN/ERLY EVE INTO
CNTRL/ERN PA. WUD CONT LIKELY POPS TRW THIS EVE CNTRL PA.

...LONGER TERM...
MODELS ALL INDICATE THAT THIS S/W SLOWS DOWN AND GETS SHEARED OUT
AS IT TRYS TO IMPINGE ON UPR HI OFFSHORE TONIGHT. MODELS SHOW THAT
A LO-LVL SRLY WIND MAX DVLPS AHEAD OF THIS UPR LVL S/W E OF MTNS BY
00Z WHICH MAY HELP FOCUS CONVTN MORE. AT THE SAME TIME... THE NERN
U.S LIES IN THE RIGHT ENTR REGION OF AN UPR LVL JET WHICH WILL
ENHANCE UPR LVL DVRG ACRS THE REGION ABV THIS LO-LVL CONV REGION.
PLENTY OF MOSITURE ARND...  PWATS RUNNING NR 2.0 INCHES IN LWR SUS
VLLY AT 00Z ON ETA/NGM (NO AVN GRIDS YET) AND WV VAPOR IMAGERY
CONTINUES TO SHOW MOIST SWRLY FLO ARND UPR HI CIRCU. THINK CNTVN
THAT IS FORMING IN WRN PA WILL MOV INTO ERN PA LATER THIS EVE AND
CUD BECOME A HVY RAIN EVENT FOR LWR SUS VLLY. WUD CONSIDER HI POPS
LWR SUS VLLY AND MENTION OF HVY DOWNPOURS IN FCST.

THIS INITIAL S/W WILL OUTRUN SFC FRNT/PRES TROF THAT CURRENTLY RAIN
ACRS LWR MI-IL. BOTH ETA/NGM ALL INDICATE AN AMPLIFICATION OF THE
UPR LVL RDG ACRS THE GREAT LAKES IN RESPONSE TO WAA AHEAD OF A
DVLPG STORM IN SC CANADA. WITH THE RDG BUILDING IN THE GREAT LAKES
REGION... NEXT VORT LOBE RIDING ON TOP OF UPR RDG WILL DIVE A
LITTLE FURTHER S BEING THE IMPETUS TO PUSH THIS FRNT/PRES TROF ACRS
ST. MODELS DIFFER IN TIMING WITH NGM MOST AGRESSIVE. ETA A LITTLE
SLOWER. LIKE ETA SINCE FRNT AND DRYER AIR LIKELY WILL HV A HARD
TIME MAKING ANY PROGRESS E OF MTNS. WUD GO CHC POPS WRN/CNTRL CTP
FA SAT AND KEEP POPS OUT SUS VLLY UNTIL EVE HRS AS FRNT TENDS TO
GET HUNG UP.

WILL MONITOR 88D NO ZONES.
PFT/S OUT.

NICOSIA

In the hours before

Local storm report, Jul 28, 3:34 PM EDT, 2 hours 19 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
334 PM EDT FRI JUL 28 1995

...A LONE THUNDERSTORM WENT SEVERE AS IT CROSSED THE MD/PA LINE
EARLY THURSDAY EVENING...JUL 27 1995...INFO. FROM WBC...THANKS...

610 PM    FULTON        PA     SEVERAL TREES DOWN...ROOF OFF SHED
                               ON TOLLGATE RIDGE...1 MILE NORTH OF
                               MD/PA BORDER.  DAMAGE ALONG RTE.
                               928.

MARTIN

Local storm report, Jul 28, 3:38 PM EDT, 2 hours 15 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
334 PM EDT FRI JUL 28 1995

...A LONE THUNDERSTORM WENT SEVERE AS IT CROSSED THE MD/PA LINE
EARLY THURSDAY EVENING...JUL 27 1995...INFO. FROM WBC...THANKS...

610 PM    FULTON        PA     SEVERAL TREES DOWN...ROOF OFF SHED
                               ON TOLLGATE RIDGE...1 MILE NORTH OF
                               MD/PA BORDER.  DAMAGE ALONG RTE.
                               928.

MARtTIN

The office that day

Everything else NWS State College, PA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 28, 4:22 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield	68 min
Jul 28, 4:32 PM EDT	Severe Thunderstorm Warning	CTP	Cameron	58 min
Jul 28, 4:43 PM EDT	Severe Thunderstorm Warning	CTP	Warren	62 min
Jul 28, 4:57 PM EDT	Severe Thunderstorm Warning	CTP	Elk	33 min
Jul 28, 4:58 PM EDT	Severe Thunderstorm Warning	CTP	Cambria	62 min
Jul 28, 5:03 PM EDT	Severe Thunderstorm Warning	CTP	McKean	57 min
Jul 28, 5:04 PM EDT	Severe Thunderstorm Warning	CTP	Potter	56 min
Jul 28, 5:24 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, Lebanon	66 min
Jul 28, 5:29 PM EDT	Severe Thunderstorm Warning	CTP	York	61 min
Jul 28, 5:30 PM EDT	Severe Thunderstorm Warning	CTP	Cameron	60 min
Jul 28, 5:45 PM EDT	Flash Flood Warning	CTP	Lebanon	3 hr
Jul 28, 5:53 PM EDT	Flash Flood Warning	CTP	Lancaster	10 hr
Jul 28, 6:04 PM EDT	Severe Thunderstorm Warning	CTP	Cambria	56 min
Jul 28, 6:40 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	65 min

Nearby

Flash Flood Warnings in Pennsylvania, 1995 Every flash flood warning in 1995

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.