Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 88, NWS State College, PA

July 3, 2020Columbia County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jul 3, 2020, 5:09 PM EDT for Columbia County, Pennsylvania. It was in force for 18 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 3, 2020, 5:09 PM EDT (21:09 UTC)
Expired: Jul 3, 2020, 5:27 PM EDT
In force: 18 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Columbia County, PA

The radar

The Binghamton radar (KBGM), 133 km from the middle of the area, began a volume at 21:12 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

Washington/Dulle, VA (KIAD), launched 12:00Z, 9.2 hours before the alert went out and 248 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2009 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 42 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 Jul 3, 3:09 PM EDT, 2 hours earlier.

Area forecast discussion, Jul 3, 3:09 PM EDT, 2 hours before

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Hazardous weather outlook, Jul 3, 12:39 PM EDT, 4 hours 30 minutes before

Hazardous Weather Outlook
National Weather Service State College PA
1239 PM EDT Fri Jul 3 2020

PAZ004>006-010>012-017>019-024>028-033>036-045-049-050-056-063>065-
041645-
Warren-McKean-Potter-Elk-Cameron-Northern Clinton-Clearfield-
Northern Centre-Southern Centre-Cambria-Blair-Huntingdon-Mifflin-
Juniata-Somerset-Bedford-Fulton-Franklin-Southern Clinton-Union-
Snyder-Perry-Cumberland-Adams-York-
1239 PM EDT Fri Jul 3 2020

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...Saturday through Thursday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ037-041-042-046-051>053-057>059-066-041645-
Tioga-Northern Lycoming-Sullivan-Southern Lycoming-Montour-
Northumberland-Columbia-Dauphin-Schuylkill-Lebanon-Lancaster-
1239 PM EDT Fri Jul 3 2020

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This afternoon and tonight.

A few strong to marginally severe thunderstorms with localized gusty
winds are possible through early evening.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

In the hours before

Special weather statement, Jul 3, 4:07 PM EDT, 1 hour 2 minutes before

Special Weather Statement
National Weather Service State College PA
407 PM EDT Fri Jul 3 2020

PAZ042-032045-
Sullivan PA-
407 PM EDT Fri Jul 3 2020

...A STRONG THUNDERSTORM WILL AFFECT PARTS OF SULLIVAN COUNTY UNTIL
445 PM EDT...

At 405 PM EDT, Doppler radar indicated strong thunderstorms near
Overton, moving southeast at 35 mph.

Wind gusts to 45 mph and pea size hail are possible as these storms
cross central and eastern Sullivan County through 445 PM.

Locations impacted include...
Ricketts Glen State Park, Lincoln Falls, Dushore, Laporte, Forksville
and Eagles Mere.

This includes the following COVID-19 Test Sites...
Guthrie Clinic Dushore.

LAT...LON 4149 7624 4131 7631 4131 7641 4128 7644
      4158 7674 4154 7623 4152 7622
TIME...MOT...LOC 2005Z 315DEG 31KT 4157 7659

DeVoir

Special weather statement, Jul 3, 4:45 PM EDT, 24 minutes before

Special Weather Statement
National Weather Service State College PA
445 PM EDT Fri Jul 3 2020

PAZ042-046-053-032130-
Columbia PA-Southern Lycoming PA-Sullivan PA-
445 PM EDT Fri Jul 3 2020

...STRONG THUNDERSTORMS WILL AFFECT PARTS OF LYCOMING...COLUMBIA...
AND SULLIVAN COUNTIES UNTIL 530 PM EDT...

At 444 PM EDT, Doppler radar indicated strong thunderstorms along a
line extending from near Sugar Run to Central to near Loyalsockville.
Movement was southeast at 15 mph.

Wind gusts 40 to 50 mph and pea size hail are possible.

Locations impacted include...
Berwick, Hughesville, Mifflinville, Lightstreet, Jerseytown,
Rohrsburg, Iola, Jamison City, Eyers Grove, Waller, Lairdsville,
Ricketts Glen State Park, Central, Fairmount Spgs, Biggertown, Muncy
Valley, Millville, Benton, Picture Rocks and Briar Creek.

This includes the following COVID-19 Test Sites...
Berwick Hospital Center...
and Guthrie Clinic Dushore.

LAT...LON 4106 7661 4115 7664 4116 7669 4134 7682
      4135 7674 4131 7660 4136 7668 4138 7652
      4156 7643 4154 7622 4131 7631 4120 7632
      4113 7627 4114 7623 4102 7622
TIME...MOT...LOC 2044Z 318DEG 15KT 4161 7631 4126 7639 4131 7682

DeVoir

Special weather statement, Jul 3, 4:55 PM EDT, 14 minutes before

Special Weather Statement
National Weather Service State College PA
455 PM EDT Fri Jul 3 2020

PAZ046-051>053-032145-
Columbia PA-Southern Lycoming PA-Northumberland PA-Montour PA-
455 PM EDT Fri Jul 3 2020

...A STRONG THUNDERSTORM WILL AFFECT PARTS OF NORTHUMBERLAND...
LYCOMING...MONTOUR...AND COLUMBIA COUNTIES UNTIL 545 PM EDT...

At 455 PM EDT, Doppler radar indicated a strong thunderstorm over
Montgomery, moving southeast at 15 mph.

Wind gusts 40 to 50 mph and pea size hail are possible.

Locations impacted include...
Bloomsburg, Danville, Muncy, Watsontown, Riverside, Montgomery,
Catawissa, Fernville, Mechanicsville, Buckhorn, Jerseytown, Rupert,
Exchange, Mooresburg, Delaware Run, Turbotville, McEwensville,
Washingtonville and Bloomsburg University.

This includes the following COVID-19 Test Sites...
Geisinger...
and Geisinger Bloomsburg Hospital.

LAT...LON 4119 7693 4128 7682 4104 7646 4093 7638
      4091 7649 4093 7676
TIME...MOT...LOC 2055Z 318DEG 14KT 4117 7685

DeVoir

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 4:07 PM EDT	Special Weather Statement	CTP	Sullivan	38 min
Jul 3, 4:45 PM EDT	Special Weather Statement	CTP	Columbia	45 min
Jul 3, 4:55 PM EDT	Special Weather Statement	CTP	Montour	50 min
Jul 3, 5:41 PM EDT	Special Weather Statement	CTP	Montour, Schuylkill	64 min
Jul 3, 7:41 PM EDT	Special Weather Statement	CTP	Lebanon	64 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2020 Every severe thunderstorm warning in 2020

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.