Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 146, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Aug 6, 2024, 4:33 PM EDT for 4 counties in Pennsylvania. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 6, 2024, 4:33 PM EDT (20:33 UTC)
- Expired
- Aug 6, 2024, 5:30 PM EDT
- In force
- 57 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Juniata County, PA, Mifflin County, PA, Perry County, PA, Snyder County, PA
The radar
The State College radar (KCCX), 68 km from the middle of the area, began a volume at 20:35 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 6, 11:42 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 8.6 hours before the alert went out and 181 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
- 527 J/kg
- Mixed-layer CIN
- -107 J/kg
- Mixed-layer LCL
- 1272 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS State College, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 6, 4:22 PM EDT, 11 minutes earlier.
Area forecast discussion, Aug 6, 4:22 PM EDT, 11 minutes before
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Local storm report, Aug 6, 3:34 PM EDT, 59 minutes before
Preliminary Local Storm Report
National Weather Service State College PA
334 PM EDT Tue Aug 6 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0320 PM Tstm Wnd Dmg 2 SW Unionville 40.89N 77.90W
08/06/2024 Centre PA Amateur Radio
Trees and wires down on 3500 S Eagle Valley
Rd.
&&
MRCSpecial weather statement, Aug 6, 3:45 PM EDT, 48 minutes before
Special Weather Statement
National Weather Service State College PA
345 PM EDT Tue Aug 6 2024
PAZ046-051>053-062030-
Columbia PA-Southern Lycoming PA-Northumberland PA-Montour PA-
345 PM EDT Tue Aug 6 2024
...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN NORTHUMBERLAND...
NORTHERN MONTOUR...SOUTHEASTERN LYCOMING AND NORTHWESTERN COLUMBIA
COUNTIES THROUGH 430 PM EDT...
At 345 PM EDT, Doppler radar was tracking a strong thunderstorm 14
miles east of Montoursville, moving east at 20 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Muncy, Watsontown, Hughesville, Jerseytown, Rohrsburg, Iola, Eyers
Grove, Waller, Lairdsville, Central, Exchange, Fairmount Spgs,
Biggertown, Delaware Run, Millville, Benton, Turbotville, Picture
Rocks, McEwensville, and Washingtonville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
A Severe Thunderstorm Watch remains in effect until 700 PM EDT for
central and north central Pennsylvania.
&&
LAT...LON 4120 7632 4102 7651 4107 7686 4108 7686
4113 7689 4135 7673 4131 7661 4128 7645
4128 7631
TIME...MOT...LOC 1945Z 281DEG 19KT 4120 7664
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
ColbertSpecial weather statement, Aug 6, 3:58 PM EDT, 35 minutes before
Special Weather Statement
National Weather Service State College PA
358 PM EDT Tue Aug 6 2024
PAZ025>028-062030-
Blair PA-Juniata PA-Huntingdon PA-Mifflin PA-
358 PM EDT Tue Aug 6 2024
...STRONG THUNDERSTORMS WILL IMPACT NORTHERN HUNTINGDON...MIFFLIN...
NORTHWESTERN JUNIATA AND NORTHEASTERN BLAIR COUNTIES THROUGH 430 PM
EDT...
At 358 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from 12 miles north of Lewistown to near Altoona.
Movement was east at 25 mph.
HAZARD...Wind gusts of 50 to 55 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Altoona, Lewistown, Huntingdon, Tyrone, Mount Union, Bald Eagle,
Burnham, Bellwood, Belleville, Warriors Mark, Milroy, Highland Park,
Williamsburg, Tipton, Yeagertown, Mcalisterville, Strodes Mills,
Reedsville, Juniata Terrace, and Allensville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Very heavy rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
A Severe Thunderstorm Watch remains in effect until 700 PM EDT for
central Pennsylvania.
&&
LAT...LON 4039 7835 4058 7842 4072 7821 4074 7811
4069 7794 4074 7783 4072 7771 4085 7736
4070 7735 4068 7719 4032 7798
TIME...MOT...LOC 1958Z 287DEG 22KT 4077 7762 4050 7822
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...55 MPH
ColbertLocal storm report, Aug 6, 3:59 PM EDT, 34 minutes before
Preliminary Local Storm Report
National Weather Service State College PA
359 PM EDT Tue Aug 6 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0345 PM Tstm Wnd Dmg 2 SW Unionville 40.88N 77.91W
08/06/2024 Centre PA Public
Trees down and on wires blocking old Rt 220.
&&
GADLocal storm report, Aug 6, 4:06 PM EDT, 27 minutes before
Preliminary Local Storm Report
National Weather Service State College PA
406 PM EDT Tue Aug 6 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0354 PM Tstm Wnd Dmg 3 NE Boalsburg 40.81N 77.75W
08/06/2024 Centre PA Amateur Radio
Trees down.
&&
GADSpecial weather statement, Aug 6, 4:25 PM EDT, 8 minutes before
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</html>The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 12:30 AM EDT | Special Weather Statement | CTP | Lycoming | 45 min |
| Aug 6, 1:28 PM EDT | Special Weather Statement | CTP | Bedford | 32 min |
| Aug 6, 1:46 PM EDT | Special Weather Statement | CTP | Clearfield | 44 min |
| Aug 6, 2:03 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 57 min |
| Aug 6, 2:35 PM EDT | Special Weather Statement | CTP | Lancaster | 25 min |
| Aug 6, 2:39 PM EDT | Special Weather Statement | CTP | Clearfield | 36 min |
| Aug 6, 2:44 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clearfield | 61 min |
| Aug 6, 2:49 PM EDT | Special Weather Statement | CTP | Cambria | 26 min |
| Aug 6, 2:53 PM EDT | Special Weather Statement | CTP | Centre | 37 min |
| Aug 6, 2:54 PM EDT | Flood Watch | CTP | Columbia, Dauphin, Lancaster, Lebanon, Schuylkill, York | 13 hr |
| Aug 6, 3:04 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Huntingdon | 41 min |
| Aug 6, 3:16 PM EDT | Areal Flood Advisory | CTP | Adams, Lancaster, York | 119 min |
| Aug 6, 3:21 PM EDT | Special Weather Statement | CTP | Cambria | 24 min |
| Aug 6, 3:24 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 66 min |
| Aug 6, 3:28 PM EDT | Special Weather Statement | CTP | Lancaster | 32 min |
| Aug 6, 3:45 PM EDT | Special Weather Statement | CTP | Montour | 45 min |
| Aug 6, 3:52 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 38 min |
| Aug 6, 3:58 PM EDT | Special Weather Statement | CTP | Blair, Huntingdon, Mifflin | 32 min |
| Aug 6, 4:06 PM EDT | Severe Thunderstorm Warning | CTP | Blair, Huntingdon | 39 min |
| Aug 6, 4:07 PM EDT | Flash Flood Warning | CTP | Lancaster | 2 hr |
| Aug 6, 4:16 PM EDT | Areal Flood Advisory | CTP | Blair, Centre, Huntingdon, Mifflin | 74 min |
| Aug 6, 4:25 PM EDT | Special Weather Statement | CTP | Columbia | 20 min |
| Aug 6, 4:42 PM EDT | Special Weather Statement | CTP | Huntingdon, Juniata, Mifflin | 48 min |
| Aug 6, 4:52 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Blair, Franklin, Huntingdon, Juniata, Mifflin and 1 more | 38 min |
| Aug 6, 4:58 PM EDT | Special Weather Statement | CTP | Lebanon | 32 min |
| Aug 6, 5:05 PM EDT | Severe Thunderstorm Warning | CTP | Lebanon | 25 min |
| Aug 6, 5:18 PM EDT | Special Weather Statement | CTP | Fulton | 12 min |
| Aug 6, 5:23 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Juniata, Lebanon, Northumberland, Perry, Schuylkill and 1 more | 37 min |
| Aug 6, 5:28 PM EDT | Special Weather Statement | CTP | Schuylkill | 32 min |
| Aug 6, 5:32 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin, Franklin, Fulton, Huntingdon, Juniata and 1 more | 43 min |
| Aug 6, 5:56 PM EDT | Special Weather Statement | CTP | Lebanon, Schuylkill | 34 min |
| Aug 6, 6:12 PM EDT | Special Weather Statement | CTP | Cumberland, Franklin, Fulton | 33 min |
| Aug 6, 6:17 PM EDT | Special Weather Statement | CTP | Lebanon | 28 min |
| Aug 6, 6:30 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, York | 45 min |
| Aug 6, 7:14 PM EDT | Special Weather Statement | CTP | Adams | 31 min |
| Aug 6, 7:32 PM EDT | Areal Flood Advisory | CTP | Lancaster, Lebanon | 118 min |
| Aug 6, 7:39 PM EDT | Special Weather Statement | CTP | Cambria, Clearfield | 51 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2024Every severe thunderstorm warning in 2024
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.