Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 234, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Aug 13, 2021, 11:29 PM EDT for Centre County, Pennsylvania. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 13, 2021, 11:29 PM EDT (03:29 UTC)
- Expired
- Aug 14, 2021, 12:00 AM EDT
- In force
- 31 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Centre County, PA
The radar
The State College radar (KCCX), 51 km from the middle of the area, began a volume at 03:32 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.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 3.5 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
- 58 J/kg
- Mixed-layer CIN
- -218 J/kg
- Mixed-layer LCL
- 1348 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 8 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
893
WUUS51 KCTP 140329
SVRCTP
PAC027-140400-
/O.NEW.KCTP.SV.W.0234.210814T0329Z-210814T0400Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
1129 PM EDT Fri Aug 13 2021
The National Weather Service in State College PA has issued a
* Severe Thunderstorm Warning for...
Southeastern Centre County in central Pennsylvania...
* Until midnight EDT.
* At 1129 PM EDT, a severe thunderstorm was located over Spring
Mills, moving northeast at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Woodward, Millheim, Aaronsburg, Rebersburg, Spring Mills, Coburn,
Madisonburg, Poe Valley State Park and Potters Mills.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in State College PA.
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.
Very heavy rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4094 7725 4092 7727 4084 7737 4078 7761
4084 7766 4097 7749 4098 7737 4100 7731
TIME...MOT...LOC 0329Z 240DEG 24KT 4086 7754
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Banghoff1 follow-up statement
690
WWUS51 KCTP 140356
SVSCTP
Severe Weather Statement
National Weather Service State College PA
1156 PM EDT Fri Aug 13 2021
PAC027-140406-
/O.EXP.KCTP.SV.W.0234.000000T0000Z-210814T0400Z/
Centre PA-
1156 PM EDT Fri Aug 13 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CENTRE COUNTY
WILL EXPIRE AT MIDNIGHT EDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.
LAT...LON 4094 7725 4092 7727 4084 7737 4078 7761
4084 7766 4097 7749 4098 7737 4100 7731
TIME...MOT...LOC 0356Z 240DEG 24KT 4095 7734
$$
BanghoffThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 8:29 PM EDT | Special Weather Statement | CTP | Cambria | 31 min |
| Aug 13, 8:49 PM EDT | Special Weather Statement | CTP | Warren | 26 min |
| Aug 13, 11:05 PM EDT | Special Weather Statement | CTP | Centre | 25 min |
| Aug 13, 11:25 PM EDT | Special Weather Statement | CTP | Clinton | 35 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.