Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 267, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Sep 8, 2021, 5:11 PM EDT for Juniata County, Northumberland County, Snyder County, Pennsylvania. It was in force for 49 min. 8 reports 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, 5:11 PM EDT (21:11 UTC)
- Expired
- Sep 8, 2021, 6:00 PM EDT
- In force
- 49 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Juniata County, PA, Northumberland County, PA, Snyder County, PA
The radar
The State College radar (KCCX), 109 km from the middle of the area, began a volume at 21:13 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, 5:30 PM EDT | TSTM WND DMG | 2 Se Middleburg, PA | MULTIPLE TREES DOWN. |
| Sep 8, 5:30 PM EDT | TSTM WND DMG | Fremont, PA | SEVERAL TREES DOWN ALONG ROUTE 104. |
| Sep 8, 5:32 PM EDT | TORNADO | 3 Se Middleburg, PA | EF-1 TORNADO CONFIRMED BY NWS STORM SURVEY SOUTHEAST OF MIDDLEBURG NEAR ROUTE 104. |
| Sep 8, 5:35 PM EDT | TORNADO | 2 Ese Freeburg, PA | EF-0 TORNADO CONFIRMED BY NWS STORM SURVEY SOUTHEAST OF FREEBURG NEAR NEITZ VALLEY ROAD. |
| Sep 8, 5:40 PM EDT | TSTM WND DMG | 1 S Freeburg, PA | SEVERAL TREES DOWN AND TWO SHEDS DESTROYED. |
| Sep 8, 5:45 PM EDT | TSTM WND DMG | 2 Ene Freeburg, PA | NUMEROUS TREES AND WIRES DOWN ALONG PRODUCE RD. TWO TREES DOWN ON A HOUSE. |
| Sep 8, 5:50 PM EDT | TSTM WND DMG | 2 E Resler, PA | NUMEROUS TREES DOWN BETWEEN STATE RD AND LOWER AUGUSTA. |
| 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, 9.2 hours before the alert went out and 218 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.
638
WUUS51 KCTP 082111
SVRCTP
PAC067-097-109-082200-
/O.NEW.KCTP.SV.W.0267.210908T2111Z-210908T2200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
511 PM EDT Wed Sep 8 2021
The National Weather Service in State College PA has issued a
* Severe Thunderstorm Warning for...
Northumberland County in central Pennsylvania...
Northeastern Juniata County in central Pennsylvania...
Snyder County in central Pennsylvania...
* Until 600 PM EDT.
* At 511 PM EDT, a severe thunderstorm was located near Richfield,
moving east at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* This severe thunderstorm will be near...
Mount Pleasant Mills, Fremont, Middleburg and Meiserville around
520 PM EDT.
Kreamer and Port Trevorton around 530 PM EDT.
Selinsgrove, Hummels Wharf, Shamokin Dam, Kratzerville, Rebuck and
Winfield around 540 PM EDT.
Sunbury, Northumberland and Stonington around 550 PM EDT.
Other locations impacted by this severe thunderstorm include
Edgewood, Beavertown, Seven Points, Freeburg, Snydertown, Herndon,
Selinsgrove Airport and Dalmatia.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Very heavy rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4072 7653 4060 7723 4077 7729 4089 7690
4089 7683 4091 7684 4097 7664 4094 7660
4094 7656 4090 7656 4088 7654 4088 7652
4074 7647
TIME...MOT...LOC 2111Z 253DEG 34KT 4072 7717
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Jurewicz1 follow-up statement
073
WWUS51 KCTP 082133
SVSCTP
Severe Weather Statement
National Weather Service State College PA
533 PM EDT Wed Sep 8 2021
PAC067-082142-
/O.CAN.KCTP.SV.W.0267.000000T0000Z-210908T2200Z/
Juniata PA-
533 PM EDT Wed Sep 8 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN JUNIATA COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4072 7653 4064 7700 4066 7701 4066 7703
4082 7708 4095 7661 4094 7660 4094 7656
4091 7657 4089 7656 4088 7654 4073 7649
TIME...MOT...LOC 2132Z 256DEG 29KT 4075 7696
$$
PAC097-109-082200-
/O.CON.KCTP.SV.W.0267.000000T0000Z-210908T2200Z/
Northumberland PA-Snyder PA-
533 PM EDT Wed Sep 8 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR SOUTHERN NORTHUMBERLAND AND EASTERN SNYDER COUNTIES...
At 532 PM EDT, a severe thunderstorm was located over Fremont, moving
east at 35 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
This severe storm will be near...
Selinsgrove and Kratzerville around 540 PM EDT.
Sunbury, Shamokin Dam, Rebuck, Hummels Wharf and Urban around 550
PM EDT.
Trevorton, Stonington and Leck Kill around 600 PM EDT.
Shamokin, Fairview-Ferndale, Marshallton and Elysburg around 610
PM EDT.
Other locations impacted by this severe thunderstorm include
Edgewood, Seven Points, Freeburg, Snydertown, Herndon, Selinsgrove
Airport and Dalmatia.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4072 7653 4064 7700 4066 7701 4066 7703
4082 7708 4095 7661 4094 7660 4094 7656
4091 7657 4089 7656 4088 7654 4073 7649
TIME...MOT...LOC 2132Z 256DEG 29KT 4075 7696
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
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, 5:57 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Northumberland, Schuylkill | 37 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.