Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 208, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Aug 12, 2021, 1:27 PM EDT for Lycoming County, Sullivan County, Pennsylvania. It was in force for 63 min. 4 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
- Aug 12, 2021, 1:27 PM EDT (17:27 UTC)
- Expired
- Aug 12, 2021, 2:30 PM EDT
- In force
- 63 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Lycoming County, PA, Sullivan County, PA
The radar
The Binghamton radar (KBGM), 103 km from the middle of the area, began a volume at 17:29 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 |
|---|---|---|---|
| Aug 12, 1:35 PM EDT | TSTM WND DMG | 4 S Ralston, PA | MULTIPLE WIRES DOWN ON ROADWAY. |
| Aug 12, 1:55 PM EDT | TSTM WND DMG | 2 Se Forksville, PA | MULTIPLE WIRES DOWN. |
| Aug 12, 2:05 PM EDT | TSTM WND DMG | 1 Ese Muncy Valley, PA | MULTIPLE TREES DOWN. |
| Aug 12, 2:12 PM EDT | TSTM WND DMG | 3 Sse Dushore, PA | TREES DOWN AND GARAGE DOOR BLOWN IN. IMAGES SENT VIA FACEBOOK. |
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 |
|---|---|---|---|
| Aug 12, 1:11 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 5.5 hours before the alert went out and 238 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
- 390 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 843 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
218
WUUS51 KCTP 121727
SVRCTP
PAC081-113-121830-
/O.NEW.KCTP.SV.W.0208.210812T1727Z-210812T1830Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
127 PM EDT Thu Aug 12 2021
The National Weather Service in State College PA has issued a
* Severe Thunderstorm Warning for...
Northeastern Lycoming County in north central Pennsylvania...
Sullivan County in north central Pennsylvania...
* Until 230 PM EDT.
* At 127 PM EDT, severe thunderstorms were located along a line
extending from near Ogdensburg to Ralston to near Trout Run, moving
east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Hughesville, Kettle Creek Gorge, Lairdsville, Ricketts Glen State
Park, Ralston, Biggertown, Muncy Valley, Trout Run, Lincoln Falls,
Barbours, Shunk, Loyalsockville, Picture Rocks, Dushore, Laporte,
Forksville, Eagles Mere and Hillsgrove.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4132 7631 4131 7641 4119 7656 4140 7720
4155 7707 4155 7696 4160 7688 4154 7622
TIME...MOT...LOC 1727Z 280DEG 41KT 4164 7694 4151 7698 4140 7710
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Colbert1 follow-up statement
056
WWUS51 KCTP 121802
SVSCTP
Severe Weather Statement
National Weather Service State College PA
202 PM EDT Thu Aug 12 2021
PAC081-113-121830-
/O.CON.KCTP.SV.W.0208.000000T0000Z-210812T1830Z/
Lycoming PA-Sullivan PA-
202 PM EDT Thu Aug 12 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM EDT
FOR NORTHEASTERN LYCOMING AND SULLIVAN COUNTIES...
At 201 PM EDT, a severe thunderstorm was located 7 miles south of
Overton, moving east at 45 mph.
HAZARD...70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
Hughesville, Kettle Creek Gorge, Lairdsville, Ricketts Glen State
Park, Biggertown, Muncy Valley, Lincoln Falls, Barbours, Shunk,
Picture Rocks, Dushore, Laporte, Forksville, Eagles Mere and
Hillsgrove.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Wind damage with this storm will occur before any rain or lightning.
Do not wait for the sound of thunder before taking cover. SEEK
SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.
&&
LAT...LON 4128 7684 4159 7680 4154 7622 4132 7631
4131 7641 4119 7656
TIME...MOT...LOC 1801Z 274DEG 41KT 4147 7646
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
ColbertThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 3:33 AM EDT | Excessive Heat Warning | CTP | Adams, Dauphin, Lancaster, Lebanon, York | 39 hr |
| Aug 12, 3:33 AM EDT | Heat Advisory | CTP | Columbia, Cumberland, Franklin, Fulton, Huntingdon, Juniata and 8 more | 39 hr |
| Aug 12, 12:38 PM EDT | Special Weather Statement | CTP | Tioga | 52 min |
| Aug 12, 12:51 PM EDT | Severe Thunderstorm Warning | CTP | Clinton, Lycoming, Potter, Tioga | 54 min |
| Aug 12, 1:43 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 49 min |
| Aug 12, 1:47 PM EDT | Severe Thunderstorm Warning | CTP | Clinton, Lycoming | 58 min |
| Aug 12, 2:15 PM EDT | Special Weather Statement | CTP | Columbia | 30 min |
| Aug 12, 2:25 PM EDT | Special Weather Statement | CTP | Lycoming | 20 min |
| Aug 12, 2:50 PM EDT | Special Weather Statement | CTP | Columbia, Montour | 25 min |
| Aug 12, 3:19 PM EDT | Special Weather Statement | CTP | Schuylkill | 41 min |
| Aug 12, 5:12 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 48 min |
| Aug 12, 5:27 PM EDT | Special Weather Statement | CTP | Tioga | 33 min |
| Aug 12, 5:46 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield, Elk | 44 min |
| Aug 12, 6:25 PM EDT | Areal Flood Advisory | CTP | Clearfield, Elk | 2 hr |
| Aug 12, 6:25 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 65 min |
| Aug 12, 7:07 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield, Elk | 53 min |
| Aug 12, 7:33 PM EDT | Special Weather Statement | CTP | Blair, Cambria | 27 min |
| Aug 12, 7:47 PM EDT | Special Weather Statement | CTP | Centre | 28 min |
| Aug 12, 7:56 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clearfield | 49 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.