Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 208, NWS State College, PA

July 22, 2019Lancaster County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jul 22, 2019, 3:00 PM EDT for Lancaster County, Pennsylvania. It was in force for 60 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 22, 2019, 3:00 PM EDT (19:00 UTC)
Expired: Jul 22, 2019, 4:00 PM EDT
In force: 60 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 0.75 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 19:00 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
Jul 22, 2:17 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 7.0 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: 36 J/kg
Mixed-layer CIN: -277 J/kg
Mixed-layer LCL: 1350 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 92 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 22, 2:05 PM EDT, 55 minutes earlier.

Area forecast discussion, Jul 22, 2:05 PM EDT, 55 minutes before

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Hazardous weather outlook, Jul 22, 2:45 PM EDT, 15 minutes before

Hazardous Weather Outlook
National Weather Service State College PA
245 PM EDT Mon Jul 22 2019

PAZ004-005-231845-
Warren-McKean-
245 PM EDT Mon Jul 22 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...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ057>059-064>066-231845-
Dauphin-Schuylkill-Lebanon-Adams-York-Lancaster-
245 PM EDT Mon Jul 22 2019

...FLASH FLOOD WATCH IN EFFECT UNTIL 2 AM EDT TUESDAY...
...SEVERE THUNDERSTORM WATCH 538 IN EFFECT UNTIL 10 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.

   Flash Flood Watch.
   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ036-056-063-231845-
Franklin-Perry-Cumberland-
245 PM EDT Mon Jul 22 2019

...FLASH FLOOD WATCH IN EFFECT UNTIL 2 AM EDT TUESDAY...

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.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ033>035-051>053-231845-
Somerset-Bedford-Fulton-Montour-Northumberland-Columbia-
245 PM EDT Mon Jul 22 2019

...FLASH FLOOD WATCH IN EFFECT UNTIL 8 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.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ019-024>028-045-046-049-050-231845-
Southern Centre-Cambria-Blair-Huntingdon-Mifflin-Juniata-
Southern Clinton-Southern Lycoming-Union-Snyder-
245 PM EDT Mon Jul 22 2019

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This afternoon and tonight.

Localized heavy rain and flash flooding are possible through early
evening.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ006-010>012-017-018-037-041-042-231845-
Potter-Elk-Cameron-Northern Clinton-Clearfield-Northern Centre-Tioga-
Northern Lycoming-Sullivan-
245 PM EDT Mon Jul 22 2019

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This afternoon and tonight.

Localized heavy rain and flash flooding are possible through early
evening.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

RXR

In the hours before

Special weather statement, Jul 22, 1:33 PM EDT, 1 hour 27 minutes before

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Special weather statement, Jul 22, 1:55 PM EDT, 1 hour 5 minutes before

Special Weather Statement
National Weather Service State College PA
155 PM EDT Mon Jul 22 2019

PAZ056-063-221830-
Perry PA-Cumberland PA-
155 PM EDT Mon Jul 22 2019

...A STRONG THUNDERSTORM WILL AFFECT PARTS OF PERRY AND CUMBERLAND
COUNTIES UNTIL 230 PM EDT...

At 154 PM EDT, Doppler radar indicated a strong thunderstorm near
Loysville, moving northeast at 30 mph.

Wind gusts of up to 55 mph are possible.

Locations impacted include...
Schlusser, Newport, Duncannon, New Bloomfield, Carlisle Springs,
Loysville, Shermansdale and Landisburg.

LAT...LON 4036 7743 4050 7711 4040 7701 4039 7703
      4037 7702 4036 7700 4036 7697 4033 7694
      4020 7731
TIME...MOT...LOC 1754Z 240DEG 25KT 4032 7729

Tyburski

Special weather statement, Jul 22, 2:09 PM EDT, 51 minutes before

Special Weather Statement
National Weather Service State College PA
209 PM EDT Mon Jul 22 2019

PAZ036-064-221845-
Adams PA-Franklin PA-
209 PM EDT Mon Jul 22 2019

...A STRONG THUNDERSTORM WILL AFFECT PARTS OF ADAMS AND FRANKLIN
COUNTIES UNTIL 245 PM EDT...

At 208 PM EDT, Doppler radar indicated a strong thunderstorm over
Waynesboro, moving northeast at 30 mph.

Wind gusts of up to 55 mph are possible.

Locations impacted include...
Waynesboro, Greencastle, Wayne Heights, Mont Alto, Rouzerville, State
Line, Fairfield, Quincy and Penn State Mont Alto.

LAT...LON 3978 7775 3989 7748 3980 7735 3972 7748
      3972 7771
TIME...MOT...LOC 1808Z 240DEG 24KT 3975 7761

Tyburski

Special weather statement, Jul 22, 2:19 PM EDT, 41 minutes before

Special Weather Statement
National Weather Service State College PA
219 PM EDT Mon Jul 22 2019

PAZ065-221845-
York PA-
219 PM EDT Mon Jul 22 2019

...A STRONG THUNDERSTORM WILL AFFECT PARTS OF YORK COUNTY UNTIL 245
PM EDT...

At 218 PM EDT, Doppler radar indicated a strong thunderstorm near
Stewartstown, moving northeast at 30 mph.

Wind gusts of up to 55 mph are possible.

Locations impacted include...
Delta, Sunnyburn, Susquehanna Trails, Fawn Grove, Peach Bottom and
Airville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

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

&&

LAT...LON 3973 7661 3985 7636 3983 7635 3977 7627
      3973 7624 3972 7624 3972 7662
TIME...MOT...LOC 1818Z 240DEG 24KT 3969 7653

Tyburski

Special weather statement, Jul 22, 2:26 PM EDT, 34 minutes before

Special Weather Statement
National Weather Service State College PA
226 PM EDT Mon Jul 22 2019

PAZ052-058-221900-
Northumberland PA-Schuylkill PA-
226 PM EDT Mon Jul 22 2019

...A STRONG THUNDERSTORM WILL AFFECT PARTS OF SCHUYLKILL AND
NORTHUMBERLAND COUNTIES UNTIL 300 PM EDT...

At 226 PM EDT, Doppler radar indicated a strong thunderstorm over
Tower City, moving northeast at 35 mph.

Wind gusts of up to 55 mph are possible.

Locations impacted include...
Mount Carmel, Minersville, Kulpmont, Ashland, Tremont, Girardville,
Tower City, Lavelle, Marlin, Forrestville, Branchdale, Seltzer,
Donaldson, Fountain Springs, Heckscherville, Wilburton Number One,
Buck Run, Klingerstown, Beurys Lake and Leck Kill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

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

&&

LAT...LON 4069 7623 4054 7652 4066 7670 4065 7672
      4066 7674 4084 7641 4083 7640 4077 7638
      4080 7630
TIME...MOT...LOC 1826Z 241DEG 29KT 4062 7658

Tyburski

Special weather statement, Jul 22, 2:53 PM EDT, 7 minutes before

Special Weather Statement
National Weather Service State College PA
253 PM EDT Mon Jul 22 2019

PAZ064-221930-
Adams PA-
253 PM EDT Mon Jul 22 2019

...STRONG THUNDERSTORMS WILL AFFECT PARTS OF ADAMS COUNTY UNTIL 330
PM EDT...

At 253 PM EDT, Doppler radar indicated strong thunderstorms along a
line extending from near Gettysburg to Emmitsburg. Movement was east
at 30 mph.

Wind gusts of up to 55 mph are possible.

Locations impacted include...
Gettysburg, Hampton, Littlestown, Carroll Valley, McSherrystown, Lake
Meade, Bonneauville, New Oxford, Lake Heritage, Biglerville,
Heidlersburg, Hunterstown, McKnightstown, Two Taverns, Gettysburg
National Military Park, Liberty Mountain Resort and Gettysburg
College.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

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

&&

LAT...LON 3991 7730 4000 7701 3972 7703 3972 7739
TIME...MOT...LOC 1853Z 249DEG 25KT 3987 7726 3972 7732

Tyburski

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 8:26 PM EDT	Special Weather Statement	CTP	York	64 min
Jul 21, 8:37 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	68 min
Jul 21, 8:43 PM EDT	Severe Thunderstorm Warning	CTP	Bedford	62 min
Jul 21, 8:55 PM EDT	Special Weather Statement	CTP	Union	50 min
Jul 21, 10:21 PM EDT	Special Weather Statement	CTP	York	24 min
Jul 21, 10:25 PM EDT	Special Weather Statement	CTP	Columbia	35 min
Jul 21, 11:48 PM EDT	Special Weather Statement	CTP	Clearfield	27 min
Jul 22, 12:45 AM EDT	Special Weather Statement	CTP	Cameron	45 min
Jul 22, 1:53 AM EDT	Special Weather Statement	CTP	Clinton	52 min
Jul 22, 1:33 PM EDT	Special Weather Statement	CTP	Snyder	27 min
Jul 22, 1:55 PM EDT	Special Weather Statement	CTP	Perry	35 min
Jul 22, 2:09 PM EDT	Special Weather Statement	CTP	Franklin	36 min
Jul 22, 2:26 PM EDT	Special Weather Statement	CTP	Schuylkill	34 min
Jul 22, 2:53 PM EDT	Special Weather Statement	CTP	Adams	37 min
Jul 22, 3:10 PM EDT	Special Weather Statement	CTP	Lebanon	35 min
Jul 22, 3:17 PM EDT	Severe Thunderstorm Warning	CTP	Lebanon, Schuylkill	58 min
Jul 22, 3:59 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	61 min
Jul 22, 4:11 PM EDT	Severe Thunderstorm Warning	CTP	Lebanon, Schuylkill	33 min
Jul 22, 6:40 PM EDT	Special Weather Statement	CTP	Cumberland, Perry	50 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.