Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 199, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Aug 2, 2000, 4:01 PM EDT for Potter County, Pennsylvania. It was in force for 74 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Aug 2, 2000, 4:01 PM EDT (20:01 UTC)
- Expired
- Aug 2, 2000, 5:15 PM EDT
- In force
- 74 min
- 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 20:02 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 2, 4:43 PM EDT | Thunderstorm Wind | Shinglehouse, PA | Trees were down across a road south of Shinglehouse. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 8.0 hours before the alert went out and 237 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
- 450 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 685 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 93 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.2
The text
As transmitted, in the capitals the NWS used until 2016.
536 WUUS51 KCTP 022011 SVRCTP PAC105-022115- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 401 PM EDT WED AUG 2 2000 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... POTTER COUNTY. * UNTIL 515 PM EDT. * AT 357 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM 7 MILES WEST OF SHINGLEHOUSE TO 12 MILES WEST OF AUSTIN...MOVING EAST AT 30 MPH. * SEVERE THUNDERSTORMS WILL BE NEAR... SHINGLEHOUSE AT 410 PM. AUSTIN AT 420 PM. COUDERSPORT AND OSWAYO AT 425 PM. ULYSSES AT 450 PM. GALETON AT 500 PM. REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCED WARNING. THIS IS A DANGEROUS STORM WITH DAMAGING WINDS AND LARGE HAIL. STAY INDOORS AWAY FROM WINDOWS. $$
What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Aug 2, 1:00 PM EDT, 3 hours 1 minute earlier.
Area forecast discussion, Aug 2, 1:00 PM EDT, 3 hours 1 minute before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 100 PM EDT WED AUG 02 2000 SHORT UPD COMING NOW RDR BACK IN SRVCE AS OF 1630Z...AND JUST IN TIME...TOO BOX FOR NRN TIER IN EFFECT BY PRESS TIME. SFC FRONT ROUGHLY FM APN-MKE-RFD NOW. TEXTBOOK OF AN MCV TRANSITIONING TO SVR WX MAKER (MIKE FRITSCH TOLD ME THESE THINGS HAPPEN). JUICE REAMINS IN PLACE W/ MID 60S TO NR 70 DWPTS ACRS FA. FNT ADVERTISED EARLIER WL MAKE AN APPEARANCE TOMORROW. MORE TEXTBOOK STUFF COMING ALONG...AS NEAT JET STREAK INTERACTION LIKELY DURING MIDDLE OF DAY TOM...SO TALL CLDS TO GET JUST THAT MUCH MORE LIFT ALONG ALRDY POTENT FNTL BOUNDARY. BUT...THINGS SHUD BEGIN TO CALM DOWN NICELY AFT SSET ON THURS...W/PASSAGE BRINGING DRIER HI PRES. FRI MAY END UP BEING A REALLY NICE DAY...AND WL THEREFORE CUT POPS BACK TO ONLY FAR NRN TIER WHERE COLDEST AIR WL LIE. XTNDD: MRF MUCHO CONSISTENT. ECMWF DIFFERS SLIGHTLY WITH STRENGTH OF NEXT SYSTEM...BUT OVERALL GOOD AGREEMENT. NICE SAT...NOT TERRIBLE SUNDAY EITHER MON BRINGS ANOTHER FRONT - TWO IN THE SAME FORECAST - IS THAT POSSIBLE?? TEMPS...WL ROLL W/GUID. .CTP...SVR WATCH 638 THRU 22Z FOR NWRN CWA. DANGELO
In the hours before
Special weather statement, Aug 2, 12:25 PM EDT, 3 hours 36 minutes before
PAZ004>006-010>012-017-018-037-041-042-022222- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 1225 PM EDT WED AUG 2 2000 ...SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS THE NORTHERN MOUNTAINS OF PENNSYLVANIA THIS AFTERNOON AND EVENING... WARM AND VERY HUMID AIR IN PLACE ACROSS THE REGION WILL HELP TO INTENSIFY AN AREA OF THUNDERSTORMS...WHICH WERE MOVING ACROSS CENTRAL LAKE ERIE AND NORTHEASTERN OHIO EARLY THIS AFTERNOON. THE THUNDERSTORMS MAY REACH SEVERE LIMITS AS THEY MOVE INTO THE NORTHWEST MOUNTAINS NEAR WARREN AND BRADFORD BETWEEN 2 AND 3 PM THIS AFTERNOON. STRONG WIND GUSTS AROUND 60 MPH ALONG WITH HAIL AND FREQUENT CLOUD TO GROUND LIGHTNING WILL BE THE MAIN THREAT. THE THREAT FOR THE SEVERE WEATHER FURTHER EAST WILL OCCUR LATE THIS AFTERNOON AND THIS EVENING. THE POTENTIAL ALSO EXISTS FOR LOCALLY HEAVY DOWNPOURS FROM REPEAT THUNDERSTORMS. THE RAIN MAY BE HEAVY ENOUGH OVER A SHORT PERIOD OF TIME TO CAUSE FLOODING. PLACES THAT RECEIVED HEAVY RAINS DURING THE LAST FEW DAYS WILL BE MOST SUSCEPTIBLE TO FLOODING. LAMBERT/DANGELO
Special weather statement, Aug 2, 1:00 PM EDT, 3 hours 1 minute before
PAZ004>006-009-010-022200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE STATE COLLEGE PA 100 PM EDT WED AUG 2 2000 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 6 PM EDT FOR THE NORTHWEST AND NORTH CENTRAL MOUNTAINS OF PENNSYLVANIA... COUNTIES INCLUDED IN THE SEVERE THUNDERSTORM WATCH ARE: CAMERON...ELK...MCKEAN...POTTER AND WARREN. SEVERE THUNDERSTORMS MOVING INTO EXTREME NORTHWEST PENNSYLVANIA WILL LIKELY MAINTAIN THEIR INTENSITY AS THEY ENTER THE NORTHWEST MOUNTAINS OF PENNSYLVANIA BETWEEN 2 AND 3 PM. THE POTENTIAL ALSO EXISTS FOR LOCALLY HEAVY DOWNPOURS FROM REPEAT THUNDERSTORMS. THE RAIN MAY BE HEAVY ENOUGH OVER A SHORT PERIOD OF TIME TO CAUSE FLOODING. PLACES THAT RECEIVED HEAVY RAINS DURING THE LAST FEW DAYS WILL BE MOST SUSCEPTIBLE TO FLOODING. A SEVERE THUNDERSTORM WATCH MEANS THAT SEVERE THUNDERSTORMS CONTAINING WINDS GUSTS OVER 58 MPH...OR HAIL OF THREE QUARTERS OF AN INCH IN DIAMETER OR LARGER...ARE POSSIBLE. LAMBERT/DANGELO
Local storm report, Aug 2, 3:21 PM EDT, 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE, PA
321 PM EDT WED AUG 2 2000
TIME(EDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0230 PM YOUNGSVILLE PA 60 MPH TSTM WIND GUST
08/02/00 WARRENThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 1:51 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 69 min |
| Aug 2, 3:02 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Warren | 58 min |
| Aug 2, 4:07 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 38 min |
| Aug 2, 4:38 PM EDT | Severe Thunderstorm Warning | CTP | Columbia | 67 min |
| Aug 2, 4:51 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 54 min |
| Aug 2, 5:14 PM EDT | Flash Flood Warning | CTP | Columbia | 3 hr |
| Aug 2, 5:37 PM EDT | Flash Flood Warning | CTP | Clearfield | 3 hr |
| Aug 2, 6:20 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 25 min |
| Aug 2, 6:41 PM EDT | Flash Flood Warning | CTP | Clinton | 3 hr |
| Aug 2, 6:44 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 61 min |
| Aug 2, 7:02 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 58 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2000Every severe thunderstorm warning in 2000
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.