Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 15, NWS State College, PA

April 19, 2019Franklin County, Fulton County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Apr 19, 2019, 6:19 PM EDT for Franklin County, Fulton County, Pennsylvania. It was in force for 56 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: Apr 19, 2019, 6:19 PM EDT (22:19 UTC)
Expired: Apr 19, 2019, 7:15 PM EDT
In force: 56 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Franklin County, PA, Fulton County, PA

The radar

The State College radar (KCCX), 111 km from the middle of the area, began a volume at 22:23 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, 10.3 hours before the alert went out and 117 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: 7 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 781 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 209 m²/s²
0-3 km storm-relative helicity: 191 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 Apr 19, 6:07 PM EDT, 12 minutes earlier.

Area forecast discussion, Apr 19, 6:07 PM EDT, 12 minutes before

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Hazardous weather outlook, Apr 19, 4:06 PM EDT, 2 hours 13 minutes before

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In the hours before

Special weather statement, Apr 19, 3:44 PM EDT, 2 hours 35 minutes before

Special Weather Statement
National Weather Service State College PA
344 PM EDT FRI APR 19 2019

PAZ064-192015-
Adams PA-
344 PM EDT FRI APR 19 2019

...A STRONG THUNDERSTORM WILL AFFECT PARTS OF ADAMS COUNTY UNTIL 415
PM EDT...

At 344 PM EDT, Doppler radar indicated a strong thunderstorm over
Emmitsburg, moving north at 85 mph.

Winds in excess of 40 mph and torrential rain are possible.

Locations impacted include...
Gettysburg, Hampton, Littlestown, Carroll Valley, McSherrystown, Lake
Meade, Bonneauville, New Oxford, Lake Heritage, Cashtown, Aspers,
Orrtanna, Biglerville, Arendtsville, York Springs, Heidlersburg,
Bendersville, Hunterstown, Fairfield and McKnightstown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Minor flooding may develop. Do not drive into water covering the
roadway.

&&

LAT...LON 3995 7746 4000 7738 4002 7704 3972 7701
      3972 7746
TIME...MOT...LOC 1944Z 182DEG 72KT 3972 7734

La Corte

Special weather statement, Apr 19, 6:10 PM EDT, 9 minutes before

Special Weather Statement
National Weather Service State College PA
610 PM EDT FRI APR 19 2019

PAZ034-035-192245-
Bedford PA-Fulton PA-
610 PM EDT FRI APR 19 2019

...STRONG THUNDERSTORMS WILL AFFECT PARTS OF BEDFORD AND FULTON
COUNTIES UNTIL 645 PM EDT...

At 609 PM EDT, Doppler radar indicated strong thunderstorms along a
line extending from 7 miles east of Lake Gordon to near Paw Paw to 7
miles north of Wardensville. Movement was northeast at 55 mph.

Very heavy rain and wind gusts in excess of 40 mph are possible.

Locations impacted include...
Breezewood, Warfordsburg, Clearville, New Enterprise, Everett,
McConnellsburg, Harrisonville, Big Cove Tannery, Crystal Springs,
Waterfall, Wells Tannery, Fort Littleton, Needmore, Valley-Hi,
Saluvia, Locust Grove, Barnes Gap, Sideling Hill Rest Area,
Inglesmith and Saxton.

LAT...LON 3972 7862 3974 7863 4026 7836 4017 7813
      4013 7808 4012 7803 4006 7787 4001 7792
      3996 7793 3973 7808 3972 7810
TIME...MOT...LOC 2209Z 215DEG 47KT 3973 7854 3958 7843 3918 7859

La Corte

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 19, 3:44 PM EDT	Special Weather Statement	CTP	Adams	31 min
Apr 19, 6:10 PM EDT	Special Weather Statement	CTP	Bedford, Fulton	35 min
Apr 19, 7:07 PM EDT	Severe Thunderstorm Warning	CTP	Franklin	34 min
Apr 19, 7:12 PM EDT	Severe Thunderstorm Warning	CTP	Huntingdon	31 min
Apr 19, 7:25 PM EDT	Tornado Warning	CTP	Huntingdon	18 min
Apr 19, 7:35 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Mifflin	56 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.