Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 102, NWS State College, PA

July 25, 2023Lancaster County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jul 25, 2023, 3:08 PM EDT for Lancaster County, Pennsylvania. It was in force for 38 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: Jul 25, 2023, 3:08 PM EDT (19:08 UTC)
Expired: Jul 25, 2023, 3:46 PM EDT
In force: 38 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

County Lancaster County, PA

The radar

The Dover AFB radar (KDOX), 152 km from the middle of the area, began a volume at 19:10 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
Jul 25, 12:13 PM EDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 7.1 hours before the alert went out and 157 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 591 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 1068 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 52 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

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 Jul 25, 1:26 PM EDT, 1 hour 42 minutes earlier.

Area forecast discussion, Jul 25, 1:26 PM EDT, 1 hour 42 minutes before

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Hazardous weather outlook, Jul 25, 12:29 PM EDT, 2 hours 39 minutes before

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In the hours before

Special weather statement, Jul 25, 9:17 AM EDT, 5 hours 51 minutes before

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Special weather statement, Jul 25, 12:11 PM EDT, 2 hours 57 minutes before

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Local storm report, Jul 25, 12:49 PM EDT, 2 hours 19 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
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Special weather statement, Jul 25, 2:41 PM EDT, 27 minutes before

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<body>
  <main class="wrap">
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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 24, 8:10 PM EDT	Special Weather Statement	CTP	Sullivan	35 min
Jul 24, 8:46 PM EDT	Special Weather Statement	CTP	Columbia, Montour, Sullivan, Union	44 min
Jul 24, 9:00 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Lycoming	45 min
Jul 24, 9:01 PM EDT	Special Weather Statement	CTP	Snyder	44 min
Jul 24, 9:52 PM EDT	Special Weather Statement	CTP	Juniata	23 min
Jul 24, 10:38 PM EDT	Special Weather Statement	CTP	Columbia, Northumberland, Schuylkill	22 min
Jul 24, 11:05 PM EDT	Special Weather Statement	CTP	Dauphin, Schuylkill	55 min
Jul 24, 11:35 PM EDT	Areal Flood Advisory	CTP	Columbia	70 min
Jul 25, 12:23 AM EDT	Special Weather Statement	CTP	Lebanon	82 min
Jul 25, 12:29 AM EDT	Special Weather Statement	CTP	Cumberland	61 min
Jul 25, 1:02 AM EDT	Special Weather Statement	CTP	Dauphin	58 min
Jul 25, 1:16 AM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin	44 min
Jul 25, 1:30 AM EDT	Special Weather Statement	CTP	Lebanon	45 min
Jul 25, 2:10 AM EDT	Areal Flood Advisory	CTP	Dauphin, Lebanon	2 hr
Jul 25, 7:32 AM EDT	Special Weather Statement	CTP	Centre	58 min
Jul 25, 8:34 AM EDT	Special Weather Statement	CTP	Mifflin	41 min
Jul 25, 9:17 AM EDT	Special Weather Statement	CTP	Snyder	43 min
Jul 25, 12:11 PM EDT	Special Weather Statement	CTP	Northumberland, Schuylkill	49 min
Jul 25, 2:41 PM EDT	Special Weather Statement	CTP	Lancaster	49 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2023 Every severe thunderstorm warning in 2023

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.