Alert archive / Pennsylvania / Flash Flood Warnings in 1998

Flash Flood Warning 88, NWS State College, PA

June 23, 1998Potter County, Pennsylvania

NWS State College, PA issued this flash flood warning at Jun 23, 1998, 5:35 PM EDT for Potter County, Pennsylvania. It was in force for 3 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: Jun 23, 1998, 5:35 PM EDT (21:35 UTC)
Expired: Jun 23, 1998, 8:40 PM EDT
In force: 3 hr
Issued by: NWS State College, PA
Area: Whole counties

County Potter County, PA

The radar

The State College radar (KCCX), 92 km from the middle of the area, began a volume at 21:37 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

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 9.6 hours before the alert went out and 147 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: 331 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 1251 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 15 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 232137
FFWCTP
PAC105-240040-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
535 PM EDT TUE JUN 23 1998

THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  POTTER COUNTY IN NORTH CENTRAL PENNSYLVANIA

* UNTIL 840 PM EDT

* AT 535 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH VERY HEAVY RAIN BETWEEN NORTH BINGHAM AND
  KINNEY...MOVING SLOWLY EAST.

  DOPPLER RADAR INDICATES THAT MORE THAN 2 INCHES OF RAIN HAS
  FALLEN IN THE LAST HOUR.
*

DON'T DRIVE ACROSS FLOODED ROADS! MOST FLASH FLOOD DEATHS OCCUR IN
AUTOMOBILES.

LA CORTE/OSTUNO


&

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 Jun 23, 2:20 PM EDT, 3 hours 15 minutes earlier.

Area forecast discussion, Jun 23, 2:20 PM EDT, 3 hours 15 minutes before

CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
220 PM EDT TUE JUN 23 1998

...DISCUSSION...
S/WV...MOVING THRU OHIO EARLY THIS AFTN...IS PROGGED TO PASS EAST OF
PA LATE THIS EVENING WITH A NORTHERLY LL FLOW OF DRIER AIR TO
FOLLOW.  WILL KEEP CHC POPS IN FCST THIS EVENING WITH HIGHEST POPS
IN THE E.  ALSO WILL MENTION FOG IN MOST ZONES AS CLRING SKIES
DEVELOP LATE.  RISING HEIGHTS COMBINED W/LL DRYING WILL RESULT IN A
LULL IN THE SHWERS/TSRA OVERNIGHT AND WED.

WEDNESDAY...RISING HEIGHTS COMBINED W/LL DRYING WILL RESULT IN A
LULL IN THE SHWERS/TSRA OVER MOST OF CWA. SFC CDFRT AND ASSOCIATED
DRYING PROGGED TO MAKE IT TO LOWER SUSQ VALL...THEN STALL.  WILL
THEREFORE MENTION POPS FOR AFTN TSRA ONLY ACROSS THE S TIER.  OVER N
PA...SFC DWPTS PROGGED TO FALL INTO THE LOW 60S.  FEEL MOSTLY SUNNY
SHOULD DO IT IN THIS REGION...SIMILAR TO THE WX OVER MICHIGAN
TODAY.  HIGHS WILL BE RATHER UNIFORM ACROSS C PA DUE TO AN EAST-WEST
8H TEMP GRADIENT MITIGATING THE NORMAL RANGE BETWEEN MOUNTAINS AND
SUSQ VALL.

WEDNESDAY NIGHT...WARM FRT LIFTING TO OUR N AND W WILL LIKELY
PRODUCE CONVECTION AT NOSE OF LL JET OVER E GRT LKS.  HAVE ADDED AN
INCREASE IN CLDS WED NITE AS BLOW OFF FM THIS ACTIVITY WUD TRACK SE
INTO PA.

THURSDAY...WARM FRT FINALLY MOVES BACK THRU PA...RESULTING IN PARTLY
SUNNY...WARM AND INCREASINGLY HUMID WX WITH CHC OF A TSRA.

FITZGERALD

In the hours before

Local storm report, Jun 23, 3:30 PM EDT, 2 hours 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PENNSYLVANIA
330 PM EDT TUE JUN 23 1998

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0300 PM    BOOT JACK                 PA   WIND DAMAGE
06/23/98   ELK                            TREES DOWN ON WIRES.

0300 PM    2SE RIDGWAY               PA   WIND DAMAGE
06/23/98   ELK                            TREES DOWN ON ROUTE 948.

OSTUNO

Local storm report, Jun 23, 3:30 PM EDT, 2 hours 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PENNSYLVANIA
330 PM EDT TUE JUN 23 1998

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0300 PM    BOOT JACK                 PA   WIND DAMAGE
06/23/98   ELK                            TREES DOWN ON WIRES.

0300 PM    2SE RIDGWAY               PA   WIND DAMAGE
06/23/98   ELK                            TREES DOWN ON ROUTE 948.

OSTUNO

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 2:24 PM EDT	Flash Flood Warning	CTP	Elk	3 hr
Jun 23, 2:53 PM EDT	Severe Thunderstorm Warning	CTP	Elk	62 min
Jun 23, 3:40 PM EDT	Severe Thunderstorm Warning	CTP	Cameron	65 min
Jun 23, 3:51 PM EDT	Severe Thunderstorm Warning	CTP	Tioga	64 min
Jun 23, 3:53 PM EDT	Flash Flood Warning	CTP	Bedford	3 hr
Jun 23, 4:07 PM EDT	Severe Thunderstorm Warning	CTP	McKean	63 min
Jun 23, 4:10 PM EDT	Flash Flood Warning	CTP	Tioga	3 hr
Jun 23, 4:15 PM EDT	Severe Thunderstorm Warning	CTP	Potter	65 min
Jun 23, 4:25 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield	65 min
Jun 23, 4:39 PM EDT	Tornado Warning	CTP	Bedford	61 min
Jun 23, 4:49 PM EDT	Tornado Warning	CTP	Fulton	61 min
Jun 23, 4:57 PM EDT	Severe Thunderstorm Warning	CTP	Huntingdon	63 min
Jun 23, 5:14 PM EDT	Severe Thunderstorm Warning	CTP	Centre	61 min
Jun 23, 5:20 PM EDT	Flash Flood Warning	CTP	Elk	3 hr
Jun 23, 5:28 PM EDT	Flash Flood Warning	CTP	York	3 hr
Jun 23, 5:54 PM EDT	Severe Thunderstorm Warning	CTP	Huntingdon	51 min
Jun 23, 5:58 PM EDT	Severe Thunderstorm Warning	CTP	Franklin	62 min
Jun 23, 6:21 PM EDT	Flash Flood Warning	CTP	Franklin	3 hr
Jun 23, 6:54 PM EDT	Flash Flood Warning	CTP	Tioga	3 hr
Jun 23, 7:58 PM EDT	Flash Flood Warning	CTP	Northumberland	3 hr

Nearby

Flash Flood Warnings in Pennsylvania, 1998 Every flash flood warning in 1998

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.