Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 170, NWS State College, PA

June 29, 20195 counties in Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jun 29, 2019, 4:59 PM EDT for 5 counties in Pennsylvania. It was in force for 61 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, 4:59 PM EDT (20:59 UTC)
Expired: Jun 29, 2019, 6:00 PM EDT
In force: 61 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Clinton County, PA, Lycoming County, PA, Montour County, PA, Northumberland County, PA, Union County, PA

The radar

The State College radar (KCCX), 84 km from the middle of the area, began a volume at 20:59 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, 9.0 hours before the alert went out and 239 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, 44 minutes earlier.

Area forecast discussion, Jun 29, 4:15 PM EDT, 44 minutes before

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Hazardous weather outlook, Jun 29, 12:12 PM EDT, 4 hours 47 minutes before

Hazardous Weather Outlook
National Weather Service State College PA
1212 PM EDT Sat Jun 29 2019

PAZ006-011-012-017>019-024>028-033>037-041-042-045-046-049>053-
056>059-063>066-301615-
Potter-Cameron-Northern Clinton-Clearfield-Northern Centre-
Southern Centre-Cambria-Blair-Huntingdon-Mifflin-Juniata-Somerset-
Bedford-Fulton-Franklin-Tioga-Northern Lycoming-Sullivan-
Southern Clinton-Southern Lycoming-Union-Snyder-Montour-
Northumberland-Columbia-Perry-Dauphin-Schuylkill-Lebanon-Cumberland-
Adams-York-Lancaster-
1212 PM EDT Sat Jun 29 2019

...SEVERE THUNDERSTORM WATCH 461 IN EFFECT UNTIL 7 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This afternoon and tonight.

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

   Severe Thunderstorm Watch.

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

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ004-005-010-301615-
Warren-McKean-Elk-
1212 PM EDT Sat Jun 29 2019

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This afternoon and tonight.

The probability for widespread hazardous weather is low.

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

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Jun 29, 4:14 PM EDT, 45 minutes before

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Local storm report, Jun 29, 4:25 PM EDT, 34 minutes before

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Local storm report, Jun 29, 4:27 PM EDT, 32 minutes before

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Local storm report, Jun 29, 4:40 PM EDT, 19 minutes before

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Local storm report, Jun 29, 4:44 PM EDT, 15 minutes before

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Local storm report, Jun 29, 4:45 PM EDT, 14 minutes before

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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, 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
Jun 29, 7:53 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	26 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.