Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 174, NWS State College, PA

June 29, 2019Lancaster County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jun 29, 2019, 7:53 PM EDT for Lancaster County, Pennsylvania. It was in force for 26 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: Jun 29, 2019, 7:53 PM EDT (23:53 UTC)
Expired: Jun 29, 2019, 8:19 PM EDT
In force: 26 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 23:58 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
Jun 29, 12:08 PM EDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 11.9 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: 927 J/kg
Mixed-layer CIN: -115 J/kg
Mixed-layer LCL: 1390 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: -10 m²/s²
0-3 km storm-relative helicity: 2 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 Jun 29, 4:15 PM EDT, 3 hours 38 minutes earlier.

Area forecast discussion, Jun 29, 4:15 PM EDT, 3 hours 38 minutes before

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Hazardous weather outlook, Jun 29, 7:20 PM EDT, 33 minutes before

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In the hours before

Local storm report, Jun 29, 6:34 PM EDT, 1 hour 19 minutes before

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Local storm report, Jun 29, 6:46 PM EDT, 1 hour 7 minutes before

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Special weather statement, Jun 29, 7:07 PM EDT, 46 minutes before

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Special weather statement, Jun 29, 7:15 PM EDT, 38 minutes before

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Special weather statement, Jun 29, 7:41 PM EDT, 12 minutes before

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Special weather statement, Jun 29, 7:45 PM EDT, 8 minutes before

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      <p id="message1">
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      <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
Jun 29, 10:40 AM EDT	Special Weather Statement	CTP	Clearfield	50 min
Jun 29, 11:11 AM EDT	Special Weather Statement	CTP	Potter	49 min
Jun 29, 11:30 AM EDT	Special Weather Statement	CTP	Clearfield	45 min
Jun 29, 11:38 AM EDT	Severe Thunderstorm Warning	CTP	Centre, Clearfield	37 min
Jun 29, 12:03 PM EDT	Special Weather Statement	CTP	Cambria	42 min
Jun 29, 12:12 PM EDT	Special Weather Statement	CTP	Centre	48 min
Jun 29, 12:20 PM EDT	Severe Thunderstorm Warning	CTP	Centre	40 min
Jun 29, 12:28 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming	42 min
Jun 29, 12:33 PM EDT	Special Weather Statement	CTP	Mifflin	42 min
Jun 29, 12:45 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Mifflin, Snyder, Union	45 min
Jun 29, 12:59 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin, Huntingdon, Juniata, Perry	61 min
Jun 29, 1:10 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Perry	65 min
Jun 29, 1:21 PM EDT	Special Weather Statement	CTP	Bedford	39 min
Jun 29, 1:43 PM EDT	Special Weather Statement	CTP	Columbia	62 min
Jun 29, 1:45 PM EDT	Special Weather Statement	CTP	Dauphin	15 min
Jun 29, 1:47 PM EDT	Special Weather Statement	CTP	Clinton	28 min
Jun 29, 2:01 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Dauphin, Montour, Northumberland, Schuylkill	44 min
Jun 29, 2:06 PM EDT	Special Weather Statement	CTP	Adams, Franklin	39 min
Jun 29, 2:16 PM EDT	Special Weather Statement	CTP	Dauphin, Lebanon	59 min
Jun 29, 2:19 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, York	41 min
Jun 29, 2:26 PM EDT	Severe Thunderstorm Warning	CTP	Franklin, Fulton	64 min
Jun 29, 2:45 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, Lebanon	60 min
Jun 29, 3:03 PM EDT	Special Weather Statement	CTP	Adams, York	57 min
Jun 29, 3:09 PM EDT	Special Weather Statement	CTP	Potter	66 min
Jun 29, 3:15 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	60 min
Jun 29, 3:49 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Fulton	36 min
Jun 29, 4:05 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Tioga	55 min
Jun 29, 4:59 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming, Montour, Northumberland, Union	61 min
Jun 29, 5:01 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield	59 min
Jun 29, 5:53 PM EDT	Special Weather Statement	CTP	Montour, Northumberland, Union	37 min
Jun 29, 5:57 PM EDT	Special Weather Statement	CTP	Clinton	33 min
Jun 29, 6:04 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Montour, Northumberland, Snyder, Union	56 min
Jun 29, 6:16 PM EDT	Areal Flood Advisory	CTP	Clinton	3 hr
Jun 29, 6:26 PM EDT	Special Weather Statement	CTP	Cameron	34 min
Jun 29, 6:27 PM EDT	Special Weather Statement	CTP	Snyder	33 min
Jun 29, 6:45 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon, Northumberland, Schuylkill, Snyder	60 min
Jun 29, 7:07 PM EDT	Special Weather Statement	CTP	Somerset	23 min
Jun 29, 7:11 PM EDT	Areal Flood Advisory	CTP	Columbia, Montour, Northumberland, Snyder, Union	2 hr
Jun 29, 7:15 PM EDT	Special Weather Statement	CTP	Lebanon	30 min
Jun 29, 7:41 PM EDT	Special Weather Statement	CTP	Lancaster	19 min
Jun 29, 7:45 PM EDT	Special Weather Statement	CTP	Bedford	30 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2019 Every severe thunderstorm warning in 2019

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.