Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 59, NWS State College, PA

May 19, 2019Dauphin County, Lebanon County, Schuylkill County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at May 19, 2019, 10:33 PM EDT for Dauphin County, Lebanon County, Schuylkill County, Pennsylvania. It was in force for 42 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: May 19, 2019, 10:33 PM EDT (02:33 UTC)
Expired: May 19, 2019, 11:15 PM EDT
In force: 42 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Dauphin County, PA, Lebanon County, PA, Schuylkill County, PA

The radar

The State College radar (KCCX), 137 km from the middle of the area, began a volume at 02:36 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
May 19, 2:36 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 2.6 hours before the alert went out and 189 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: 953 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 1793 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 146 m²/s²
0-3 km storm-relative helicity: 237 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 3.8

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 May 19, 8:30 PM EDT, 2 hours 3 minutes earlier.

Area forecast discussion, May 19, 8:30 PM EDT, 2 hours 3 minutes before

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Hazardous weather outlook, May 19, 5:18 PM EDT, 5 hours 15 minutes before

Hazardous Weather Outlook
National Weather Service State College PA
518 PM EDT Sun May 19 2019

PAZ012-018-019-025>028-034>037-041-042-045-046-049>053-056>059-
063>066-202130-
Northern Clinton-Northern Centre-Southern Centre-Blair-Huntingdon-
Mifflin-Juniata-Bedford-Fulton-Franklin-Tioga-Northern Lycoming-
Sullivan-Southern Clinton-Southern Lycoming-Union-Snyder-Montour-
Northumberland-Columbia-Perry-Dauphin-Schuylkill-Lebanon-Cumberland-
Adams-York-Lancaster-
518 PM EDT Sun May 19 2019

...SEVERE THUNDERSTORM WATCH 193 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...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...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ004>006-010-011-017-024-033-202130-
Warren-McKean-Potter-Elk-Cameron-Clearfield-Cambria-Somerset-
518 PM EDT Sun May 19 2019

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

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, May 19, 9:06 PM EDT, 1 hour 27 minutes before

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Local storm report, May 19, 9:07 PM EDT, 1 hour 26 minutes before

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Local storm report, May 19, 9:58 PM EDT, 35 minutes before

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Local storm report, May 19, 10:11 PM EDT, 22 minutes before

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Local storm report, May 19, 10:18 PM EDT, 15 minutes before

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Local storm report, May 19, 10:33 PM EDT, 0 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
May 19, 8:03 PM EDT	Special Weather Statement	CTP	Adams, Cumberland	42 min
May 19, 8:05 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, Lebanon, York	40 min
May 19, 8:44 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	46 min
May 19, 9:03 PM EDT	Areal Flood Advisory	CTP	Dauphin, Lancaster, Lebanon	3 hr
May 19, 10:05 PM EDT	Areal Flood Advisory	CTP	Franklin	4 hr
May 19, 11:39 PM EDT	Special Weather Statement	CTP	Cumberland	36 min
May 19, 11:59 PM EDT	Special Weather Statement	CTP	Dauphin, Lebanon	31 min
May 20, 12:34 AM EDT	Special Weather Statement	CTP	Lebanon	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.