Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 119, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jul 21, 2010, 2:36 PM EDT for 4 counties in Pennsylvania. It was in force for 26 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 21, 2010, 2:36 PM EDT (18:36 UTC)
- Expired
- Jul 21, 2010, 3:02 PM EDT
- In force
- 26 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
Counties Centre County, PA, Clinton County, PA, Lycoming County, PA, Union County, PA
The radar
The State College radar (KCCX), 55 km from the middle of the area, began a volume at 18:36 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 21, 11:27 AM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.6 hours before the alert went out and 213 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
- 215 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 1126 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 91 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 21, 11:00 AM EDT, 3 hours 36 minutes earlier.
Area forecast discussion, Jul 21, 11:00 AM EDT, 3 hours 36 minutes before
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</html>Hazardous weather outlook, Jul 21, 1:35 PM EDT, 1 hour 1 minute before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE STATE COLLEGE PA 135 PM EDT WED JUL 21 2010 PAZ024>028-033>036-056-063>065-221745- CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN-JUNIATA-SOMERSET-BEDFORD-FULTON- FRANKLIN-PERRY-CUMBERLAND-ADAMS-YORK- 135 PM EDT WED JUL 21 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. SCATTERED STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON. THE PREDOMINATE HAZARD WILL BE DAMAGING WINDS...WITH LARGE HAIL AND OR EVEN AN ISOLATED BRIEF TORNADO A SECONDARY THREAT. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ON FRIDAY. APPARENT TEMPERATURES IN EXCESS OF 95 TO 100 DEGREES ARE POSSIBLE ON FRIDAY AND SATURDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING. PAZ004>006-010>012-037-041-042-221745- WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-TIOGA- NORTHERN LYCOMING-SULLIVAN- 135 PM EDT WED JUL 21 2010 ...SEVERE THUNDERSTORM WATCH 507 IN EFFECT UNTIL 8 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ON FRIDAY AND SATURDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED THIS AFTERNOON AND EVENING. PAZ017>019-045-046-049>053-057>059-066-221745- CLEARFIELD-NORTHERN CENTRE-SOUTHERN CENTRE-SOUTHERN CLINTON- SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR-NORTHUMBERLAND-COLUMBIA- DAUPHIN-SCHUYLKILL-LEBANON-LANCASTER- 135 PM EDT WED JUL 21 2010 ...SEVERE THUNDERSTORM WATCH 507 IN EFFECT UNTIL 8 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV/STATECOLLEGE ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ON FRIDAY. APPARENT TEMPERATURES IN EXCESS OF 95 TO 100 DEGREES ARE POSSIBLE ON FRIDAY AND SATURDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED THIS AFTERNOON AND EVENING. MS
In the hours before
Special weather statement, Jul 21, 1:14 PM EDT, 1 hour 22 minutes before
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</html>Special weather statement, Jul 21, 1:30 PM EDT, 1 hour 6 minutes before
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</html>Special weather statement, Jul 21, 1:51 PM EDT, 45 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE STATE COLLEGE PA 151 PM EDT WED JUL 21 2010 PAZ004-211830- WARREN PA- 151 PM EDT WED JUL 21 2010 ...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN WARREN COUNTY... AT 150 PM EDT...A STRONG THUNDERSTORM WAS 20 MILES NORTH OF OIL CITY...MOVING EAST AT 30 MPH. WIND GUSTS TO 30 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THIS STORM. THIS STORM WILL BE NEAR GRAND VALLEY AROUND 200 PM...GARLAND AROUND 210 PM...TIDIOUTE AROUND 215 PM AND CHAPMAN STATE PARK AROUND 230 PM. THIS WILL IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 6...ROUTE 62... STATE ROAD 59. LAT...LON 4188 7908 4164 7905 4163 7962 4182 7963 FORECASTER: RHG
Special weather statement, Jul 21, 1:56 PM EDT, 40 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
156 PM EDT WED JUL 21 2010
PAZ012-045-211830-
NORTHERN CLINTON PA-SOUTHERN CLINTON PA-
156 PM EDT WED JUL 21 2010
...A STRONG THUNDERSTORM WILL AFFECT CENTRAL CLINTON COUNTY...
AT 155 PM EDT...A STRONG THUNDERSTORM WAS NEAR KEATING...MOVING
SOUTHEAST AT 30 MPH.
WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.
DOPPLER RADAR HAS INDICATED SOME ROTATION WITH THIS STORM. THIS
STORM WILL BE NEAR HYNER AROUND 215 PM AND GLEN UNION AROUND 225 PM.
THIS WILL IMPACT STATE ROAD 120.
LAT...LON 4126 7741 4105 7753 4124 7791 4126 7791
4125 7793 4129 7801 4136 7793
FORECASTER: STEINBUGLSpecial weather statement, Jul 21, 1:57 PM EDT, 39 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE STATE COLLEGE PA 157 PM EDT WED JUL 21 2010 PAZ005-006-211830- MCKEAN PA-POTTER PA- 157 PM EDT WED JUL 21 2010 ...A STRONG THUNDERSTORM WILL AFFECT NORTHERN MCKEAN AND NORTHWESTERN POTTER COUNTIES... AT 155 PM EDT...A STRONG THUNDERSTORM WAS NEAR BRADFORD...MOVING EAST AT 35 MPH. WIND GUSTS TO 30 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THIS STORM. THIS STORM WILL BE NEAR CYCLONE AROUND 205 PM...REW AROUND 210 PM... SMETHPORT AROUND 215 PM...CORYVILLE AROUND 220 PM...PORT ALLEGANY AROUND 225 PM AND SHINGLEHOUSE AROUND 230 PM. THIS WILL IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 6...ROUTE 219... STATE ROAD 46...STATE ROAD 59...STATE ROAD 446. LAT...LON 4197 7793 4173 7796 4182 7886 4200 7883 FORECASTER: RHG
Special weather statement, Jul 21, 2:32 PM EDT, 4 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
232 PM EDT WED JUL 21 2010
PAZ005-010-211900-
ELK PA-MCKEAN PA-
232 PM EDT WED JUL 21 2010
...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN ELK AND SOUTHERN
MCKEAN COUNTIES...
AT 227 PM EDT...A STRONG THUNDERSTORM WAS NEAR KANE...MOVING EAST AT
30 MPH.
WIND GUSTS TO 30 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THIS STORM.
THIS STORM WILL BE NEAR WILCOX AROUND 245 PM...MOUNT JEWETT AROUND
250 PM AND KINZUA BRIDGE STATE PARK AROUND 255 PM.
THIS WILL IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 6...ROUTE 219...
STATE ROAD 66.
LAT...LON 4177 7839 4162 7837 4162 7842 4154 7843
4154 7895 4172 7896
FORECASTER: RHGThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 4:37 AM EDT | Special Weather Statement | CTP | Clinton | 23 min |
| Jul 21, 5:28 AM EDT | Special Weather Statement | CTP | Lycoming | 32 min |
| Jul 21, 11:03 AM EDT | Special Weather Statement | CTP | McKean | 27 min |
| Jul 21, 11:28 AM EDT | Special Weather Statement | CTP | Elk | 47 min |
| Jul 21, 12:03 PM EDT | Special Weather Statement | CTP | Columbia | 27 min |
| Jul 21, 12:14 PM EDT | Special Weather Statement | CTP | Cameron | 31 min |
| Jul 21, 1:14 PM EDT | Special Weather Statement | CTP | Warren | 31 min |
| Jul 21, 1:30 PM EDT | Special Weather Statement | CTP | Columbia | 45 min |
| Jul 21, 1:51 PM EDT | Special Weather Statement | CTP | Warren | 39 min |
| Jul 21, 1:56 PM EDT | Special Weather Statement | CTP | Clinton | 34 min |
| Jul 21, 1:57 PM EDT | Special Weather Statement | CTP | McKean | 33 min |
| Jul 21, 2:32 PM EDT | Special Weather Statement | CTP | McKean | 28 min |
| Jul 21, 2:39 PM EDT | Special Weather Statement | CTP | Potter | 36 min |
| Jul 21, 2:52 PM EDT | Special Weather Statement | CTP | Cameron, Elk | 23 min |
| Jul 21, 3:20 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Clinton, Elk, McKean, Potter | 55 min |
| Jul 21, 3:56 PM EDT | Special Weather Statement | CTP | Elk | 49 min |
| Jul 21, 4:00 PM EDT | Special Weather Statement | CTP | Lycoming | 45 min |
| Jul 21, 4:03 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Centre, Clearfield, Clinton, Elk | 57 min |
| Jul 21, 4:22 PM EDT | Special Weather Statement | CTP | Forest | 23 min |
| Jul 21, 4:27 PM EDT | Special Weather Statement | CTP | Clinton | 33 min |
| Jul 21, 4:44 PM EDT | Special Weather Statement | CTP | Union | 31 min |
| Jul 21, 4:55 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clinton, Mifflin | 65 min |
| Jul 21, 5:09 PM EDT | Special Weather Statement | CTP | Montour, Northumberland, Union | 36 min |
| Jul 21, 5:34 PM EDT | Special Weather Statement | CTP | Elk | 26 min |
| Jul 21, 5:57 PM EDT | Special Weather Statement | CTP | Northumberland, Schuylkill, Snyder | 33 min |
| Jul 21, 6:03 PM EDT | Special Weather Statement | CTP | Elk | 27 min |
| Jul 21, 6:08 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Clearfield, Clinton, Elk | 52 min |
| Jul 21, 6:18 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Dauphin, Juniata, Northumberland, Perry, Schuylkill and 1 more | 42 min |
| Jul 21, 6:47 PM EDT | Tornado Warning | CTP | Centre, Clearfield | 28 min |
| Jul 21, 7:02 PM EDT | Special Weather Statement | CTP | Lebanon, Schuylkill | 28 min |
| Jul 21, 7:14 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 46 min |
| Jul 21, 7:31 PM EDT | Special Weather Statement | CTP | Cambria | 29 min |
| Jul 21, 7:44 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Juniata, Mifflin | 46 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.