Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 142, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jul 24, 2010, 7:45 PM EDT for 5 counties in Pennsylvania. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 24, 2010, 7:45 PM EDT (23:45 UTC)
- Expired
- Jul 24, 2010, 8:45 PM EDT
- In force
- 60 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
Counties Clinton County, PA, Lycoming County, PA, Potter County, PA, Sullivan County, PA, Tioga County, PA
The radar
The State College radar (KCCX), 89 km from the middle of the area, began a volume at 23:48 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 24, 4:14 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 24, 6:48 PM EDT | Tornado Watch | SPC | 4 hr |
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 11.8 hours before the alert went out and 197 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
- 696 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 476 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Jul 24, 7:43 PM EDT, 2 minutes earlier.
Area forecast discussion, Jul 24, 7:43 PM EDT, 2 minutes before
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</html>Hazardous weather outlook, Jul 24, 7:09 PM EDT, 36 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 709 PM EDT SAT JUL 24 2010 PAZ005-006-010>012-017-018-037-041-042-251630- MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD- NORTHERN CENTRE-TIOGA-NORTHERN LYCOMING-SULLIVAN- 709 PM EDT SAT JUL 24 2010 ...TORNADO WATCH 533 IN EFFECT UNTIL 1 AM EDT SUNDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. TORNADO WATCH. A STALLED FRONTAL BOUNDARY NEAR THE NEW YORK BORDER WILL BE THE FOCUS FOR THUNDERSTORMS INTO THIS EVENING. SOME STORMS WILL BE SEVERE WITH DAMAGING WINDS AND HAIL. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. PAZ004-024-033-251630- WARREN-CAMBRIA-SOMERSET- 709 PM EDT SAT JUL 24 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TONIGHT. A STALLED FRONTAL BOUNDARY NEAR THE NEW YORK BORDER WILL BE THE FOCUS FOR THUNDERSTORMS LATER TODAY. A FEW OF THESE STORMS COULD PRODUCE DAMAGING WIND GUSTS THIS AFTERNOON AND EVENING...ESPECIALLY ACROSS THE NORTHERN HALF OF THE STATE. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. A FEW STORMS MAY BE ON THE STRONG TO SEVERE SIDE ON SUNDAY... AS A COLD FRONT MOVES SOUTHWARD ACROSS THE STATE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. PAZ057-059-063>066-251630- DAUPHIN-LEBANON-CUMBERLAND-ADAMS-YORK-LANCASTER- 709 PM EDT SAT JUL 24 2010 ...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 9 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. EXCESSIVE HEAT WARNING. A STALLED FRONTAL BOUNDARY NEAR THE NEW YORK BORDER WILL BE THE FOCUS FOR THUNDERSTORMS INTO THIS EVENING. SOME STORMS WILL BE SEVERE WITH DAMAGING WINDS AND HAIL. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. A FEW STORMS MAY BE ON THE STRONG TO SEVERE SIDE ON SUNDAY... AS A COLD FRONT MOVES SOUTHWARD ACROSS THE STATE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. PAZ019-045-046-049-051>053-058-251630- SOUTHERN CENTRE-SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-MONTOUR- NORTHUMBERLAND-COLUMBIA-SCHUYLKILL- 709 PM EDT SAT JUL 24 2010 ...HEAT ADVISORY IN EFFECT UNTIL 9 PM EDT THIS EVENING... ...TORNADO WATCH 533 IN EFFECT UNTIL 1 AM EDT SUNDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. TORNADO WATCH. HEAT ADVISORY. A STALLED FRONTAL BOUNDARY NEAR THE NEW YORK BORDER WILL BE THE FOCUS FOR THUNDERSTORMS INTO THIS EVENING. SOME STORMS WILL BE SEVERE WITH DAMAGING WINDS AND HAIL. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. A FEW STORMS MAY BE ON THE STRONG TO SEVERE SIDE ON SUNDAY... AS A COLD FRONT MOVES SOUTHWARD ACROSS THE STATE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. PAZ025>028-034>036-050-056-251630- BLAIR-HUNTINGDON-MIFFLIN-JUNIATA-BEDFORD-FULTON-FRANKLIN-SNYDER- PERRY- 709 PM EDT SAT JUL 24 2010 ...HEAT ADVISORY IN EFFECT UNTIL 9 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. HEAT ADVISORY. A STALLED FRONTAL BOUNDARY NEAR THE NEW YORK BORDER WILL BE THE FOCUS FOR THUNDERSTORMS LATER TODAY. A FEW OF THESE STORMS COULD PRODUCE DAMAGING WIND GUSTS THIS AFTERNOON AND EVENING...ESPECIALLY ACROSS THE NORTHERN HALF OF THE STATE. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. A FEW STORMS MAY BE ON THE STRONG TO SEVERE SIDE ON SUNDAY... AS A COLD FRONT MOVES SOUTHWARD ACROSS THE STATE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. MARTIN
In the hours before
Special weather statement, Jul 24, 5:04 PM EDT, 2 hours 41 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE STATE COLLEGE PA 504 PM EDT SAT JUL 24 2010 PAZ004-005-242145- MCKEAN PA-WARREN PA- 504 PM EDT SAT JUL 24 2010 ...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN WARREN AND NORTHWESTERN MCKEAN COUNTIES... AT 501 PM EDT...A STRONG THUNDERSTORM WAS NEAR WARREN...MOVING EAST AT 40 MPH. WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM. PERSONS ACROSS THE REGION SHOULD BE ALERT FOR SUDDEN CHANGES IN STORM STRENGTH. SEEK SHELTER IF THREATENING WEATHER IS OBSERVED OR A WARNING IS ISSUED. THIS STORM WILL BE NEAR SCANDIA AROUND 515 PM...MARSHBURG AROUND 535 PM...LEWIS RUN AROUND 540 PM AND CYCLONE AROUND 545 PM. THIS WILL IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 6...ROUTE 62... ROUTE 219...STATE ROAD 46...STATE ROAD 59...STATE ROAD 446. LAT...LON 4200 7840 4172 7842 4181 7931 4201 7929 FORECASTER: MARTIN
Special weather statement, Jul 24, 6:00 PM EDT, 1 hour 45 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
600 PM EDT SAT JUL 24 2010
PAZ006-037-242230-
POTTER PA-TIOGA PA-
600 PM EDT SAT JUL 24 2010
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN POTTER AND
WESTERN TIOGA COUNTIES...
AT 553 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM 29
MILES SOUTHEAST OF OLEAN TO 21 MILES SOUTHWEST OF WELLSBORO...MOVING
NORTHEAST AT 30 MPH.
WIND GUSTS TO 50 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THESE
STORMS. DOPPLER RADAR INDICATES THAT THESE STORMS HAVE WEAK ROTATION
IN THEM...WHICH MAY CAUSE THE STORMS TO BECOME STRONGER. THESE
STORMS WILL BE NEAR DENTON HILL STATE PARK AROUND 605 PM...GALETON
AROUND 610 PM...LEONARD HARRISON STATE PARK AROUND 625 PM AND
HARRISON VALLEY AROUND 630 PM.
THIS WILL IMPACT ROUTE 6 FROM COUDERSPORT TO NORTHWEST OF WELLSBORO.
IF THESE STORMS DO GET STRONGER...OR THE ROTATION BECOMES
STRONGER...AN APPROPRIATE TORNADO WARNING OR SEVERE THUNDERSTORM
WARNING WILL BE ISSUED.
LAT...LON 4183 7718 4154 7755 4154 7760 4149 7761
4178 7812 4188 7771 4200 7761 4200 7754
FORECASTER: DANGELOLocal storm report, Jul 24, 6:29 PM EDT, 1 hour 16 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
629 PM EDT SAT JUL 24 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0623 PM TSTM WND DMG 8 W ELDRED 41.96N 78.54W
07/24/2010 MCKEAN PA EMERGENCY MNGR
TREES DOWN IN DUKE CENTER ON THE CORNER OF OIL VALLEY
ROAD AND MAIN STREET
&&
PAHLocal storm report, Jul 24, 7:02 PM EDT, 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
702 PM EDT SAT JUL 24 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0645 PM TSTM WND DMG 4 S BRADFORD 41.90N 78.64W
07/24/2010 MCKEAN PA EMERGENCY MNGR
TREES AND WIRES DOWN ON MINARD RUN ROAD NEAR CUSTER CITY
AT 650 PM
0645 PM TSTM WND DMG 4 S BRADFORD 41.90N 78.64W
07/24/2010 MCKEAN PA EMERGENCY MNGR
TREES AND WIRES DOWN ON MINARD ROAD NEAR CUSTER CITY
&&
PAHLocal storm report, Jul 24, 7:07 PM EDT, 38 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
707 PM EDT SAT JUL 24 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0650 PM HAIL 6 S ULYSSES 41.82N 77.76W
07/24/2010 M1.25 INCH POTTER PA TRAINED SPOTTER
HAIL THE SIZE OF KENNEDY HALF DOLLARS ACCOMPANIED 0.76
INCHES OF RAIN
&&
PAHLocal storm report, Jul 24, 7:31 PM EDT, 14 minutes before
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</html>The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 9:38 PM EDT | Special Weather Statement | CTP | McKean, Warren | 52 min |
| Jul 23, 10:00 PM EDT | Areal Flood Advisory | CTP | McKean, Warren | 3 hr |
| Jul 23, 10:01 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 44 min |
| Jul 23, 10:22 PM EDT | Special Weather Statement | CTP | McKean, Potter | 38 min |
| Jul 23, 10:37 PM EDT | Severe Thunderstorm Warning | CTP | Elk, McKean | 38 min |
| Jul 23, 11:21 PM EDT | Special Weather Statement | CTP | Cameron, Clinton | 24 min |
| Jul 23, 11:47 PM EDT | Special Weather Statement | CTP | Clinton | 28 min |
| Jul 24, 12:15 AM EDT | Special Weather Statement | CTP | Lycoming, Union | 30 min |
| Jul 24, 5:04 PM EDT | Special Weather Statement | CTP | McKean, Warren | 41 min |
| Jul 24, 5:30 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Potter, Warren | 90 min |
| Jul 24, 5:40 PM EDT | Tornado Warning | CTP | McKean, Warren | 50 min |
| Jul 24, 5:55 PM EDT | Severe Thunderstorm Warning | CTP | Elk, McKean, Warren | 65 min |
| Jul 24, 6:00 PM EDT | Special Weather Statement | CTP | Potter | 30 min |
| Jul 24, 6:20 PM EDT | Tornado Warning | CTP | McKean, Potter | 25 min |
| Jul 24, 6:30 PM EDT | Tornado Warning | CTP | McKean, Potter | 30 min |
| Jul 24, 6:42 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Potter, Tioga | 63 min |
| Jul 24, 6:48 PM EDT | Tornado Warning | CTP | Potter, Tioga | 27 min |
| Jul 24, 7:02 PM EDT | Areal Flood Advisory | CTP | Cameron, Elk, McKean, Potter, Tioga | 3 hr |
| Jul 24, 7:10 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Elk | 50 min |
| Jul 24, 7:13 PM EDT | Tornado Warning | CTP | Lycoming, Potter, Tioga | 47 min |
| Jul 24, 7:31 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Potter, Tioga | 35 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2010Every severe thunderstorm warning in 2010
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.