Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 114, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jul 11, 2021, 5:30 PM EDT for 4 counties in Pennsylvania. It was in force for 45 min. 2 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
- Jul 11, 2021, 5:30 PM EDT (21:30 UTC)
- Expired
- Jul 11, 2021, 6:15 PM EDT
- In force
- 45 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Blair County, PA, Centre County, PA, Clearfield County, PA, Huntingdon County, PA
The radar
The State College radar (KCCX), 31 km from the middle of the area, began a volume at 21:32 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 11, 5:32 PM EDT | TSTM WND DMG | Bellwood, PA | TREES AND WIRES DOWN. |
| Jul 11, 6:13 PM EDT | TSTM WND DMG | Altoona, PA | ROOF DAMAGE TO A BUILDING IN THE 1800 BLOCK OF UNION AVE. |
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 11, 2:40 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 9.5 hours before the alert went out and 166 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
- 5 J/kg
- Mixed-layer CIN
- -180 J/kg
- Mixed-layer LCL
- 979 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
148
WUUS51 KCTP 112130
SVRCTP
PAC013-027-033-061-112215-
/O.NEW.KCTP.SV.W.0114.210711T2130Z-210711T2215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
530 PM EDT Sun Jul 11 2021
The National Weather Service in State College PA has issued a
* Severe Thunderstorm Warning for...
East central Clearfield County in central Pennsylvania...
Northwestern Huntingdon County in central Pennsylvania...
Southwestern Centre County in central Pennsylvania...
Northeastern Blair County in central Pennsylvania...
* Until 615 PM EDT.
* At 530 PM EDT, a severe thunderstorm was located over Tipton,
moving northeast at 40 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.
* Locations impacted include...
Altoona, Tyrone, Philipsburg, Stormstown, Bald Eagle, Lakemont,
Bellwood, Warriors Mark, Williamsburg, Tipton, Chester Hill, Snow
Shoe, North Philipsburg, Clarence, Port Matilda, South Philipsburg,
Sandy Ridge, Moshannon, Spruce Creek and Pine Glen.
For those driving on Interstate 80, this includes areas between the
Kylertown and Milesburg exits, specifically from mile markers 133 to
155.
This includes Interstate 99 from mile markers 32 to 70.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.
&&
LAT...LON 4040 7825 4050 7846 4111 7810 4098 7779
TIME...MOT...LOC 2130Z 209DEG 37KT 4062 7828
HAIL...1.00IN
WIND...60MPH
$$
Martin1 follow-up statement
984
WWUS51 KCTP 112154
SVSCTP
Severe Weather Statement
National Weather Service State College PA
554 PM EDT Sun Jul 11 2021
PAC013-027-033-061-112215-
/O.CON.KCTP.SV.W.0114.000000T0000Z-210711T2215Z/
Clearfield PA-Huntingdon PA-Centre PA-Blair PA-
554 PM EDT Sun Jul 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR EAST CENTRAL CLEARFIELD...NORTHWESTERN HUNTINGDON...SOUTHWESTERN
CENTRE AND NORTHEASTERN BLAIR COUNTIES...
At 553 PM EDT, a severe thunderstorm was located near Port Matilda,
moving northeast at 40 mph. Other storms were just south of this
storm.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Altoona, Tyrone, Philipsburg, Stormstown, Bald Eagle, Lakemont,
Bellwood, Warriors Mark, Williamsburg, Tipton, Chester Hill, Snow
Shoe, North Philipsburg, Clarence, Port Matilda, South Philipsburg,
Sandy Ridge, Moshannon, Spruce Creek and Pine Glen.
For those driving on Interstate 80, this includes areas between the
Kylertown and Milesburg exits, specifically from mile markers 133 to
155.
This includes Interstate 99 from mile markers 32 to 70.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
LAT...LON 4040 7825 4050 7846 4111 7810 4098 7779
TIME...MOT...LOC 2153Z 209DEG 37KT 4083 7812
HAIL...1.00IN
WIND...60MPH
$$
MartinThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 3:29 PM EDT | Special Weather Statement | CTP | Cameron | 31 min |
| Jul 11, 3:51 PM EDT | Special Weather Statement | CTP | Cambria | 39 min |
| Jul 11, 4:42 PM EDT | Flash Flood Watch | CTP | Columbia, Lycoming, Sullivan, Tioga | 9 hr |
| Jul 11, 4:48 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Elk | 42 min |
| Jul 11, 4:51 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield, Elk | 39 min |
| Jul 11, 4:59 PM EDT | Special Weather Statement | CTP | Blair | 46 min |
| Jul 11, 5:06 PM EDT | Special Weather Statement | CTP | Snyder | 39 min |
| Jul 11, 5:06 PM EDT | Severe Thunderstorm Warning | CTP | Blair, Huntingdon | 24 min |
| Jul 11, 5:10 PM EDT | Tornado Warning | CTP | Cameron, Elk | 24 min |
| Jul 11, 5:18 PM EDT | Severe Thunderstorm Warning | CTP | Elk | 46 min |
| Jul 11, 5:19 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Clearfield, Elk | 41 min |
| Jul 11, 5:25 PM EDT | Severe Thunderstorm Warning | CTP | Cambria, Somerset | 65 min |
| Jul 11, 5:37 PM EDT | Areal Flood Advisory | CTP | Cameron, Clearfield, Clinton, Elk, Potter | 2 hr |
| Jul 11, 5:52 PM EDT | Special Weather Statement | CTP | Bedford | 23 min |
| Jul 11, 5:55 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Centre, Clearfield, Clinton, Potter | 35 min |
| Jul 11, 6:03 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Blair, Cambria, Centre, Clearfield, Huntingdon and 1 more | 57 min |
| Jul 11, 6:16 PM EDT | Tornado Warning | CTP | Centre, Clinton | 29 min |
| Jul 11, 6:23 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clinton | 52 min |
| Jul 11, 6:35 PM EDT | Special Weather Statement | CTP | Sullivan | 25 min |
| Jul 11, 6:39 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clinton | 51 min |
| Jul 11, 6:48 PM EDT | Tornado Warning | CTP | Centre, Clinton | 27 min |
| Jul 11, 6:57 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Centre, Cumberland, Franklin, Fulton, Huntingdon and 3 more | 63 min |
| Jul 11, 7:02 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Sullivan | 43 min |
| Jul 11, 7:25 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 50 min |
| Jul 11, 7:31 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clinton, Juniata, Mifflin, Snyder, Union | 44 min |
| Jul 11, 7:39 PM EDT | Tornado Warning | CTP | Clinton, Lycoming | 36 min |
| Jul 11, 7:48 PM EDT | Special Weather Statement | CTP | Sullivan | 27 min |
| Jul 11, 7:58 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Cumberland, Franklin, Fulton, Huntingdon, Juniata and 2 more | 62 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.