Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 155, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jul 13, 2021, 8:17 PM EDT for Lycoming County, Northumberland County, Union County, Pennsylvania. It was in force for 43 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
- Jul 13, 2021, 8:17 PM EDT (00:17 UTC)
- Expired
- Jul 13, 2021, 9:00 PM EDT
- In force
- 43 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Lycoming County, PA, Northumberland County, PA, Union County, PA
The radar
The State College radar (KCCX), 101 km from the middle of the area, began a volume at 00:16 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 |
|---|---|---|---|
| Jul 13, 8:55 PM EDT | HAIL 1.5 | Montgomery, PA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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 13, 1:37 PM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 0.3 hours before the alert went out and 245 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
- 883 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -60 m²/s²
- 0-3 km storm-relative helicity
- -49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
362 WUUS51 KCTP 140017 SVRCTP PAC081-097-119-140100- /O.NEW.KCTP.SV.W.0155.210714T0017Z-210714T0100Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service State College PA 817 PM EDT Tue Jul 13 2021 The National Weather Service in State College PA has issued a * Severe Thunderstorm Warning for... Northwestern Northumberland County in central Pennsylvania... Southeastern Lycoming County in north central Pennsylvania... Northeastern Union County in central Pennsylvania... * Until 900 PM EDT. * At 817 PM EDT, a severe thunderstorm was located near Allenwood, moving northeast at 25 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Montoursville, Muncy, Hughesville, Montgomery, Allenwood, Delaware Run, Barbours, Loyalsockville, Picture Rocks and Williamsport Airport. This includes Interstate 180 from mile markers 7 to 24. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4108 7691 4114 7703 4144 7686 4128 7656 TIME...MOT...LOC 0017Z 214DEG 20KT 4115 7693 TORNADO...POSSIBLE HAIL...<.75IN WIND...60MPH $$ Travis
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 8:08 PM EDT | Special Weather Statement | CTP | Franklin | 37 min |
| Jul 13, 8:09 PM EDT | Special Weather Statement | CTP | Lycoming | 36 min |
| Jul 13, 8:25 PM EDT | Special Weather Statement | CTP | Huntingdon | 35 min |
| Jul 13, 8:41 PM EDT | Areal Flood Advisory | CTP | Lycoming, Sullivan, Tioga | 25 min |
| Jul 13, 8:51 PM EDT | Tornado Warning | CTP | Lycoming, Montour, Northumberland | 24 min |
| Jul 13, 8:59 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Sullivan | 61 min |
| Jul 13, 9:06 PM EDT | Flash Flood Warning | CTP | Lycoming, Sullivan, Tioga | 3 hr |
| Jul 13, 9:15 PM EDT | Special Weather Statement | CTP | Lycoming | 30 min |
| Jul 13, 9:30 PM EDT | Severe Thunderstorm Warning | CTP | Clinton, Lycoming, Northumberland, Snyder, Union | 60 min |
| Jul 13, 10:18 PM EDT | Areal Flood Advisory | CTP | Centre, Clinton, Columbia, Lycoming, Montour, Northumberland and 2 more | 117 min |
| Jul 13, 10:18 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Montour, Northumberland, Snyder, Union | 57 min |
| Jul 13, 11:18 PM EDT | Special Weather Statement | CTP | Columbia, Montour | 27 min |
| Jul 14, 12:12 AM EDT | Areal Flood Advisory | CTP | Columbia, Montour, Northumberland | 2 hr |
| Jul 14, 1:46 AM EDT | Areal Flood Advisory | CTP | Lycoming | 119 min |
| Jul 14, 1:49 PM EDT | Special Weather Statement | CTP | Perry | 26 min |
| Jul 14, 4:08 PM EDT | Special Weather Statement | CTP | Perry | 37 min |
| Jul 14, 4:58 PM EDT | Special Weather Statement | CTP | Sullivan | 32 min |
| Jul 14, 6:52 PM EDT | Special Weather Statement | CTP | Lycoming | 23 min |
| Jul 14, 7:31 PM EDT | Special Weather Statement | CTP | Columbia | 29 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.