Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 154, NWS State College, PA

August 17, 2024Centre County, Huntingdon County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Aug 17, 2024, 7:41 PM EDT for Centre County, Huntingdon County, Pennsylvania. It was in force for 64 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 17, 2024, 7:41 PM EDT (23:41 UTC)
Expired
Aug 17, 2024, 8:45 PM EDT
In force
64 min
Issued by
NWS State College, PA
Area
Storm-based polygon
Tornado
Possible
Hail
1.0 in
Wind
60.0 mph

Counties Centre County, PA, Huntingdon County, PA

The radar

The State College radar (KCCX), 30 km from the middle of the area, began a volume at 23:44 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

Pittsburgh, PA (KPIT), launched 12:00Z, 11.7 hours before the alert went out and 188 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.

Skew-T log-pSkew-T log-p diagram, Pittsburgh, PA at 12:00Z on 2024-08-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 828 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2024-08-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
828 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
602 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
98 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 17, 7:07 PM EDT, 34 minutes earlier.

Area forecast discussion, Aug 17, 7:07 PM EDT, 34 minutes before
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Hazardous weather outlook, Aug 17, 5:10 AM EDT, 14 hours 31 minutes before
Hazardous Weather Outlook
National Weather Service State College PA
510 AM EDT Sat Aug 17 2024

PAZ004>006-010-011-017-024>026-033>035-037-042-051>053-180915-
Warren-McKean-Potter-Elk-Cameron-Clearfield-Cambria-Blair-Huntingdon-
Somerset-Bedford-Fulton-Tioga-Sullivan-Montour-Northumberland-
Columbia-
510 AM EDT Sat Aug 17 2024

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

Strong to severe thunderstorms with gusty winds and heavy rainfall
are possible from this afternoon into early tonight.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Showers and thunderstorms on Sunday could produce heavy rain and may
lead to flooding depending on where the heavier rain falls today.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ012-018-019-027-028-041-045-046-049-050-056-180915-
Northern Clinton-Northern Centre-Southern Centre-Mifflin-Juniata-
Northern Lycoming-Southern Clinton-Southern Lycoming-Union-Snyder-
Perry-
510 AM EDT Sat Aug 17 2024

...FLOOD WATCH IN EFFECT FROM NOON EDT TODAY THROUGH LATE TONIGHT...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Flood Watch.

Strong thunderstorms today and early tonight may also generate
damaging wind gusts.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Showers and thunderstorms on Sunday could produce heavy rain and may
lead to flooding depending on where the heavier rain falls today.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ036-057>059-063>066-180915-
Franklin-Dauphin-Schuylkill-Lebanon-Cumberland-Adams-York-Lancaster-
510 AM EDT Sat Aug 17 2024

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

Strong to severe thunderstorms with gusty winds and heavy rainfall
are possible from this afternoon into early tonight.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Additional thunderstorms are expected Sunday afternoon and Sunday
night. The main threat from the Sunday storms will be heavy rain and
flooding. Damaging winds are also possible.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

In the hours before

Special weather statement, Aug 17, 6:36 PM EDT, 1 hour 5 minutes before
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Special weather statement, Aug 17, 6:42 PM EDT, 59 minutes before
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Special weather statement, Aug 17, 7:06 PM EDT, 35 minutes before
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Special weather statement, Aug 17, 7:29 PM EDT, 12 minutes before
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Special weather statement, Aug 17, 7:30 PM EDT, 11 minutes before
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Local storm report, Aug 17, 7:35 PM EDT, 6 minutes before
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The office that day

Everything else NWS State College, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 17, 4:59 AM EDTFlood WatchCTPAdams, Cameron, Centre, Clearfield, Clinton, Columbia and 19 more42 hr
Aug 17, 8:45 AM EDTAreal Flood AdvisoryCTPPotter2 hr
Aug 17, 12:07 PM EDTAreal Flood AdvisoryCTPCentre, Clearfield, Clinton2 hr
Aug 17, 12:42 PM EDTFlash Flood WarningCTPCentre, Clinton101 min
Aug 17, 4:15 PM EDTSpecial Weather StatementCTPWarren30 min
Aug 17, 4:57 PM EDTSpecial Weather StatementCTPWarren33 min
Aug 17, 5:43 PM EDTSpecial Weather StatementCTPWarren17 min
Aug 17, 5:49 PM EDTSevere Thunderstorm WarningCTPWarren26 min
Aug 17, 5:57 PM EDTSpecial Weather StatementCTPWarren33 min
Aug 17, 6:36 PM EDTSpecial Weather StatementCTPMcKean, Warren24 min
Aug 17, 6:42 PM EDTSpecial Weather StatementCTPCentre33 min
Aug 17, 6:55 PM EDTSevere Thunderstorm WarningCTPMcKean, Warren35 min
Aug 17, 7:06 PM EDTSpecial Weather StatementCTPCentre24 min
Aug 17, 7:29 PM EDTSpecial Weather StatementCTPMcKean31 min
Aug 17, 7:30 PM EDTSpecial Weather StatementCTPCentre30 min
Aug 17, 7:38 PM EDTAreal Flood AdvisoryCTPBlair, Centre, Huntingdon2 hr

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.