Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 268, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Sep 8, 2021, 5:57 PM EDT for Columbia County, Northumberland County, Schuylkill County, Pennsylvania. It was in force for 37 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
- Sep 8, 2021, 5:57 PM EDT (21:57 UTC)
- Expired
- Sep 8, 2021, 6:34 PM EDT
- In force
- 37 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Columbia County, PA, Northumberland County, PA, Schuylkill County, PA
The radar
The State College radar (KCCX), 125 km from the middle of the area, began a volume at 21:56 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 |
|---|---|---|---|
| Sep 8, 6:10 PM EDT | TSTM WND DMG | 2 Ene Stonington, PA | NUMEROUS TREES DOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 10.0 hours before the alert went out and 221 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1137 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 127 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
421
WUUS51 KCTP 082157
SVRCTP
PAC037-097-107-082245-
/O.NEW.KCTP.SV.W.0268.210908T2157Z-210908T2245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
557 PM EDT Wed Sep 8 2021
The National Weather Service in State College PA has issued a
* Severe Thunderstorm Warning for...
Central Schuylkill County in central Pennsylvania...
Southern Northumberland County in central Pennsylvania...
Southeastern Columbia County in central Pennsylvania...
* Until 645 PM EDT.
* At 557 PM EDT, a severe thunderstorm was located over Trevorton,
moving east at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* This severe thunderstorm will be near...
Leck Kill around 600 PM EDT.
Shamokin, Marshallton, Fairview-Ferndale, Knoebels Grove and
Elysburg around 610 PM EDT.
Mount Carmel, Kulpmont, Wilburton Number One, Wilburton Number
Two, Locustdale, Lavelle, Numidia, Slabtown and Beurys Lake around
620 PM EDT.
Ashland, Aristes, Girardville and Fountain Springs around 630 PM
EDT.
Other locations impacted by this severe thunderstorm include Gordon,
Edgewood, Park Place, Ringtown, Middleport, Cumbola, Marion Heights,
Seven Points, Palo Alto and Shenandoah Heights.
This includes Interstate 81 from mile markers 113 to 132.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4065 7681 4082 7685 4085 7681 4089 7656
4088 7652 4089 7653 4095 7619 4093 7611
4068 7606
TIME...MOT...LOC 2157Z 259DEG 31KT 4078 7668
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Jurewicz1 follow-up statement
965
WWUS51 KCTP 082234
SVSCTP
Severe Weather Statement
National Weather Service State College PA
634 PM EDT Wed Sep 8 2021
PAC037-097-107-082244-
/O.CAN.KCTP.SV.W.0268.000000T0000Z-210908T2245Z/
Schuylkill PA-Northumberland PA-Columbia PA-
634 PM EDT Wed Sep 8 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL SCHUYLKILL...SOUTHERN
NORTHUMBERLAND AND SOUTHEASTERN COLUMBIA COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning has been cancelled.
LAT...LON 4065 7681 4082 7685 4085 7681 4089 7656
4088 7652 4089 7653 4095 7619 4093 7611
4068 7606
TIME...MOT...LOC 2231Z 259DEG 31KT 4084 7626
$$
JurewiczThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 8, 3:07 PM EDT | Special Weather Statement | CTP | Lycoming | 23 min |
| Sep 8, 3:12 PM EDT | Special Weather Statement | CTP | Centre | 33 min |
| Sep 8, 3:27 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Sullivan | 33 min |
| Sep 8, 3:29 PM EDT | Special Weather Statement | CTP | Blair | 31 min |
| Sep 8, 3:59 PM EDT | Special Weather Statement | CTP | Huntingdon | 31 min |
| Sep 8, 4:29 PM EDT | Special Weather Statement | CTP | Mifflin | 46 min |
| Sep 8, 4:36 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Mifflin, Snyder | 39 min |
| Sep 8, 5:11 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Northumberland, Snyder | 49 min |
| Sep 8, 6:21 PM EDT | Flash Flood Watch | CTP | Adams, Lancaster, York | 7 hr |
| Sep 8, 6:36 PM EDT | Special Weather Statement | CTP | Columbia | 39 min |
| Sep 8, 7:18 PM EDT | Special Weather Statement | CTP | Carbon | 27 min |
| Sep 8, 7:43 PM EDT | Special Weather Statement | CTP | Schuylkill | 17 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.