Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 262, NWS State College, PA

August 18, 2019Centre County, Clinton County, Lycoming County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Aug 18, 2019, 2:45 PM EDT for Centre County, Clinton County, Lycoming 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: Aug 18, 2019, 2:45 PM EDT (18:45 UTC)
Expired: Aug 18, 2019, 3:45 PM EDT
In force: 60 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Centre County, PA, Clinton County, PA, Lycoming County, PA

The radar

The State College radar (KCCX), 50 km from the middle of the area, began a volume at 18:46 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

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 6.8 hours before the alert went out and 220 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: 1370 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 117 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 Aug 18, 2:37 PM EDT, 8 minutes earlier.

Area forecast discussion, Aug 18, 2:37 PM EDT, 8 minutes before

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Hazardous weather outlook, Aug 18, 5:20 AM EDT, 9 hours 25 minutes before

Hazardous Weather Outlook
National Weather Service State College PA
520 AM EDT Sun Aug 18 2019

PAZ019-024>028-045-046-049>053-190930-
Southern Centre-Cambria-Blair-Huntingdon-Mifflin-Juniata-
Southern Clinton-Southern Lycoming-Union-Snyder-Montour-
Northumberland-Columbia-
520 AM EDT Sun Aug 18 2019

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

Scattered to numerous late day showers and thunderstorms will
occur today. A few of the storms will become strong to severe
thunderstorms with gusty winds, locally heavy rain and frequent
lightning.

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

Heat indices around 100 degrees likely both Monday and Tuesday
afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ033>036-056>059-063>066-190930-
Somerset-Bedford-Fulton-Franklin-Perry-Dauphin-Schuylkill-Lebanon-
Cumberland-Adams-York-Lancaster-
520 AM EDT Sun Aug 18 2019

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

Scattered late afternoon and early evening showers and thunderstorms
will occur today. A few of the storms will become strong to severe
thunderstorms with gusty winds, locally heavy rain and frequent
lightning.

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

Heat indices around 100 degrees likely both Monday and Tuesday
afternoon.

Additional strong to locally severe thunderstorms, containing heavy
rain and gusty winds, will occur each afternoon Monday through
Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ004>006-010>012-017-018-037-041-042-190930-
Warren-McKean-Potter-Elk-Cameron-Northern Clinton-Clearfield-
Northern Centre-Tioga-Northern Lycoming-Sullivan-
520 AM EDT Sun Aug 18 2019

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

Scattered to numerous late afternoon and early evening showers and
thunderstorms will occur today. A few of the storms will become
strong to severe thunderstorms with gusty winds, locally heavy rain
and frequent lightning.

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

Additional strong to locally severe thunderstorms, containing heavy
rain and gusty winds, will occur each afternoon Monday through
Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

In the hours before

Local storm report, Aug 18, 1:35 PM EDT, 1 hour 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
135 PM EDT SUN AUG 18 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0116 PM     TSTM WND DMG     1 S PORT ALLEGANY       41.80N  78.28W
08/18/2019                   MCKEAN             PA   911 CALL CENTER

            MULTIPLE TREES DOWN ALONG ROUTE 155 AND ON LOWER
            PORTAGE RD.

&&

EVENT NUMBER CTP1901663

JRB

Special weather statement, Aug 18, 1:51 PM EDT, 54 minutes before

Special Weather Statement
National Weather Service State College PA
151 PM EDT Sun Aug 18 2019

PAZ017-181830-
Clearfield PA-
151 PM EDT Sun Aug 18 2019

...A STRONG THUNDERSTORM WILL AFFECT PARTS OF CLEARFIELD COUNTY UNTIL
230 PM EDT...

At 151 PM EDT, Doppler radar indicated a strong thunderstorm over
DuBois, moving east at 25 mph.

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

Locations impacted include...
DuBois, Clearfield, Sandy, Penfield, Plymptonville, Rockton, Parker
Dam State Park, Lecontes Mills, S.B. Elliot State Park, Falls Creek,
Troutville, Treasure Lake, Clearfield-Lawrence Airport and Penn State
Dubois.

LAT...LON 4120 7877 4120 7870 4121 7868 4124 7844
      4123 7825 4103 7822 4101 7879 4108 7881
      4114 7880
TIME...MOT...LOC 1751Z 261DEG 23KT 4112 7871

Martin

Local storm report, Aug 18, 2:12 PM EDT, 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
212 PM EDT SUN AUG 18 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0136 PM     TSTM WND DMG     RIDGWAY                 41.43N  78.73W
08/18/2019                   ELK                PA   911 CALL CENTER

            MULTIPLE REPORTS OF TREES DOWN ON WIRES INCLUDING ON
            ROCKY ROAD AND AT LAZY RIVER CANOE RENTAL.

&&

EVENT NUMBER CTP1901664

JRB

Local storm report, Aug 18, 2:18 PM EDT, 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
218 PM EDT SUN AUG 18 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0120 PM     HAIL             EMPORIUM                41.51N  78.24W
08/18/2019  M1.00 INCH       CAMERON            PA   TRAINED SPOTTER

&&

EVENT NUMBER CTP1901665

JRB

Local storm report, Aug 18, 2:36 PM EDT, 9 minutes before

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Local storm report, Aug 18, 2:38 PM EDT, 7 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
Aug 17, 8:35 PM EDT	Special Weather Statement	CTP	Cambria	25 min
Aug 18, 8:16 AM EDT	Special Weather Statement	CTP	Warren	44 min
Aug 18, 12:37 PM EDT	Special Weather Statement	CTP	McKean	38 min
Aug 18, 12:40 PM EDT	Special Weather Statement	CTP	Potter	50 min
Aug 18, 12:44 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Elk, McKean	76 min
Aug 18, 1:18 PM EDT	Special Weather Statement	CTP	Cameron	42 min
Aug 18, 1:36 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clinton, Elk, Potter	54 min
Aug 18, 1:51 PM EDT	Special Weather Statement	CTP	Clearfield	39 min
Aug 18, 2:02 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clearfield, Clinton	58 min
Aug 18, 2:09 PM EDT	Severe Thunderstorm Warning	CTP	Tioga	81 min
Aug 18, 2:28 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clinton, Potter	62 min
Aug 18, 3:33 PM EDT	Special Weather Statement	CTP	Centre	12 min
Aug 18, 3:34 PM EDT	Severe Thunderstorm Warning	CTP	Centre	56 min
Aug 18, 3:36 PM EDT	Special Weather Statement	CTP	Cambria	24 min
Aug 18, 3:39 PM EDT	Special Weather Statement	CTP	Somerset	21 min
Aug 18, 3:55 PM EDT	Special Weather Statement	CTP	Clearfield	20 min
Aug 18, 3:58 PM EDT	Special Weather Statement	CTP	Lycoming, Sullivan	32 min
Aug 18, 4:18 PM EDT	Special Weather Statement	CTP	Lancaster	12 min
Aug 18, 4:29 PM EDT	Special Weather Statement	CTP	Lancaster	16 min
Aug 18, 4:33 PM EDT	Special Weather Statement	CTP	Montour, Union	27 min
Aug 18, 4:34 PM EDT	Special Weather Statement	CTP	Centre	26 min
Aug 18, 4:43 PM EDT	Special Weather Statement	CTP	Bedford	17 min
Aug 18, 4:44 PM EDT	Special Weather Statement	CTP	Columbia	16 min
Aug 18, 4:55 PM EDT	Special Weather Statement	CTP	Blair	35 min
Aug 18, 5:03 PM EDT	Areal Flood Advisory	CTP	Lancaster	117 min
Aug 18, 5:05 PM EDT	Special Weather Statement	CTP	Columbia, Montour	25 min
Aug 18, 5:06 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Huntingdon, Mifflin	24 min
Aug 18, 5:21 PM EDT	Special Weather Statement	CTP	McKean	24 min
Aug 18, 5:25 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Mifflin	50 min
Aug 18, 5:31 PM EDT	Special Weather Statement	CTP	York	29 min
Aug 18, 5:36 PM EDT	Special Weather Statement	CTP	Schuylkill	24 min
Aug 18, 5:38 PM EDT	Special Weather Statement	CTP	Fulton	22 min
Aug 18, 5:47 PM EDT	Special Weather Statement	CTP	Schuylkill	28 min
Aug 18, 6:01 PM EDT	Severe Thunderstorm Warning	CTP	Perry	44 min
Aug 18, 6:21 PM EDT	Special Weather Statement	CTP	Schuylkill	24 min
Aug 18, 6:24 PM EDT	Special Weather Statement	CTP	Elk	21 min
Aug 18, 6:30 PM EDT	Special Weather Statement	CTP	Franklin	30 min
Aug 18, 6:30 PM EDT	Severe Thunderstorm Warning	CTP	Elk	44 min
Aug 18, 6:43 PM EDT	Special Weather Statement	CTP	Schuylkill	32 min
Aug 18, 6:45 PM EDT	Special Weather Statement	CTP	Cameron	15 min
Aug 18, 6:46 PM EDT	Areal Flood Advisory	CTP	Schuylkill	3 hr
Aug 18, 7:04 PM EDT	Special Weather Statement	CTP	Cameron	26 min
Aug 18, 7:22 PM EDT	Special Weather Statement	CTP	Lebanon	23 min
Aug 18, 7:44 PM EDT	Special Weather Statement	CTP	Lebanon	31 min
Aug 18, 7:53 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, Lebanon	55 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.