Alert archive / Pennsylvania / Flash Flood Warnings in 1998
Flash Flood Warning 82, NWS State College, PA
NWS State College, PA issued this flash flood warning at Jun 20, 1998, 12:34 AM EDT for Cambria 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
- Jun 20, 1998, 12:34 AM EDT (04:34 UTC)
- Expired
- Jun 20, 1998, 4:35 AM EDT
- In force
- 4 hr
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Cambria County, PA
The radar
The State College radar (KCCX), 76 km from the middle of the area, began a volume at 04:33 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 00:00Z, 4.6 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.
- Mixed-layer CAPE
- 575 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1030 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCTP 200435 FFWCTP PAC021-200835- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 1234 AM EDT SAT JUN 20 1998 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHERN CAMBRIA COUNTY IN WEST CENTRAL PENNSYLVANIA * UNTIL 435 AM EDT * AT 1230 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A CLUSTER OF THUNDERSTORMS WITH VERY HEAVY RAIN MOVING SLOWLY SOUTHEAST INTO THE JOHNSTOWN AREA. * DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD! 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 Jun 19, 9:15 PM EDT, 3 hours 19 minutes earlier.
Area forecast discussion, Jun 19, 9:15 PM EDT, 3 hours 19 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 915 PM EDT FRI JUN 19 1998 WORK ZONES SENT TO PIT/PHL VIA PHLADMCTP. ...DISCUSSION... LATEST SURFACE ANALYSIS SHOWS LOWEST SFC PRESSURES OVER EASTERN NY...WITH A LIGHT WESTERLY FLOW ACROSS PA AND GRADUALLY DECREASING DEW PTS TO THE WEST...WITH UPPER 60S AND LOWER 70S ACROSS THE SUSQUEHANNA VLY AND AROUND 60 IN WESTERN OH. MODELS INDICATE LITTLE TO TRIGGER STORMS TONIGHT...WITH LIGHT SUBSIDENCE INDICATED ON ALL MODELS INCLUDING THE NEW MESO-ETA. STILL A FEW RW/TRW ARE SURVIVING ATTM OVER WESTERN PA. THESE ARE MOVING VERY SLOWLY SE AND DOUBT THEY HAVE ANY CHC TO MAKE IT EAST OF THE CENTRAL MTNS TNGT. KEPT A LOW CHC POP TO COVER FOR THE FEW RENEGADE SHOWERS OVER THE SW HALF OF THE CWA...INCLUDING THE LWR SUSQ...BUT REMOVED ANY POPS FOR ALL OF THE MID SUSQ AND NORTH. THE NGM FWCS ARE RUNNING A BIT TOO LOW WITH THE DEW PTS THIS EVENING...AND WITH ONLY A SLOW FALL EXPECTED BUMBEP LOW TEMPS UP A CATEGORY ACROSS THE EASTERN ZONES. MSE
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 3:49 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 46 min |
| Jun 20, 5:02 PM EDT | Severe Thunderstorm Warning | CTP | Snyder | 48 min |
Nearby
Flash Flood Warnings in Pennsylvania, 1998Every 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.