Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 20, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jun 9, 2021, 4:02 PM EDT for McKean County, Warren County, Pennsylvania. It was in force for 28 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 9, 2021, 4:02 PM EDT (20:02 UTC)
- Expired
- Jun 9, 2021, 4:30 PM EDT
- In force
- 28 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties McKean County, PA, Warren County, PA
The radar
The Buffalo radar (KBUF), 112 km from the middle of the area, began a volume at 20:04 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 |
|---|---|---|---|
| Jun 9, 4:05 PM EDT | TSTM WND DMG | Bradford, PA | MULTIPLE TREES AND WIRES DOWN IN CITY OF BRADFORD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.0 hours before the alert went out and 110 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
- 68 J/kg
- Mixed-layer CIN
- -116 J/kg
- Mixed-layer LCL
- 905 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
662 WUUS51 KCTP 092002 SVRCTP PAC083-123-092030- /O.NEW.KCTP.SV.W.0020.210609T2002Z-210609T2030Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service State College PA 402 PM EDT Wed Jun 9 2021 The National Weather Service in State College PA has issued a * Severe Thunderstorm Warning for... Northeastern Warren County in north central Pennsylvania... Northwestern McKean County in north central Pennsylvania... * Until 430 PM EDT. * At 401 PM EDT, a severe thunderstorm was located over Bradford, moving west at 35 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Warren, Bradford, Russell, Rew, Scandia, Marshburg, Kinzua Dam, Lewis Run and University Of Pittsburgh - Bradford. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4200 7854 4188 7853 4181 7913 4200 7914 TIME...MOT...LOC 2001Z 087DEG 34KT 4197 7864 HAIL...0.75IN WIND...60MPH $$ Martin
1 follow-up statement
869 WWUS51 KCTP 092013 SVSCTP Severe Weather Statement National Weather Service State College PA 413 PM EDT Wed Jun 9 2021 PAC083-123-092030- /O.CON.KCTP.SV.W.0020.000000T0000Z-210609T2030Z/ Warren PA-McKean PA- 413 PM EDT Wed Jun 9 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT FOR NORTHEASTERN WARREN AND NORTHWESTERN MCKEAN COUNTIES... At 413 PM EDT, a severe thunderstorm was located near Allegany State Park, moving west at 35 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Warren, Bradford, Russell, Rew, Scandia, Marshburg, Kinzua Dam, Lewis Run and University Of Pittsburgh - Bradford. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4200 7854 4188 7853 4181 7913 4200 7914 TIME...MOT...LOC 2013Z 087DEG 34KT 4196 7879 HAIL...0.75IN WIND...60MPH $$ Martin
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 1:37 PM EDT | Special Weather Statement | CTP | Tioga | 53 min |
| Jun 9, 2:04 PM EDT | Severe Thunderstorm Warning | CTP | Potter | 26 min |
| Jun 9, 2:11 PM EDT | Special Weather Statement | CTP | Clearfield | 34 min |
| Jun 9, 2:18 PM EDT | Special Weather Statement | CTP | Elk | 27 min |
| Jun 9, 2:36 PM EDT | Special Weather Statement | CTP | Potter | 24 min |
| Jun 9, 2:43 PM EDT | Special Weather Statement | CTP | Blair | 32 min |
| Jun 9, 2:51 PM EDT | Special Weather Statement | CTP | Potter | 24 min |
| Jun 9, 2:55 PM EDT | Special Weather Statement | CTP | Dauphin | 35 min |
| Jun 9, 2:59 PM EDT | Special Weather Statement | CTP | Centre | 31 min |
| Jun 9, 3:03 PM EDT | Special Weather Statement | CTP | Huntingdon | 27 min |
| Jun 9, 3:08 PM EDT | Special Weather Statement | CTP | McKean | 37 min |
| Jun 9, 3:14 PM EDT | Special Weather Statement | CTP | Cameron | 31 min |
| Jun 9, 3:27 PM EDT | Special Weather Statement | CTP | Dauphin | 33 min |
| Jun 9, 3:36 PM EDT | Special Weather Statement | CTP | Forest | 24 min |
| Jun 9, 3:52 PM EDT | Special Weather Statement | CTP | McKean | 23 min |
| Jun 9, 4:31 PM EDT | Special Weather Statement | CTP | Warren | 59 min |
| Jun 9, 5:09 PM EDT | Special Weather Statement | CTP | Warren | 66 min |
| Jun 9, 5:13 PM EDT | Special Weather Statement | CTP | York | 62 min |
| Jun 9, 5:35 PM EDT | Areal Flood Advisory | CTP | Cumberland, York | 85 min |
| Jun 9, 5:36 PM EDT | Special Weather Statement | CTP | Schuylkill | 54 min |
| Jun 9, 5:46 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 44 min |
| Jun 9, 6:00 PM EDT | Special Weather Statement | CTP | Adams | 30 min |
| Jun 9, 6:14 PM EDT | Areal Flood Advisory | CTP | Schuylkill | 23 min |
| Jun 9, 6:28 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 62 min |
| Jun 9, 6:30 PM EDT | Special Weather Statement | CTP | York | 45 min |
| Jun 9, 6:37 PM EDT | Flash Flood Warning | CTP | Schuylkill | 3 hr |
| Jun 9, 6:38 PM EDT | Special Weather Statement | CTP | Lycoming | 52 min |
| Jun 9, 7:05 PM EDT | Special Weather Statement | CTP | Lancaster | 40 min |
| Jun 9, 7:09 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 51 min |
| Jun 9, 7:54 PM EDT | Special Weather Statement | CTP | Lancaster | 36 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2021Every severe thunderstorm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.