Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 116, NWS State College, PA

July 7, 2013Clinton County, Lycoming County, Union County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jul 7, 2013, 4:20 PM EDT for Clinton County, Lycoming County, Union County, Pennsylvania. It was in force for 55 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 7, 2013, 4:20 PM EDT (20:20 UTC)
Expired: Jul 7, 2013, 5:15 PM EDT
In force: 55 min
Issued by: NWS State College, PA
Area: Storm-based polygon

Counties Clinton County, PA, Lycoming County, PA, Union County, PA

The radar

The State College radar (KCCX), 69 km from the middle of the area, began a volume at 20:23 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 7, 1:16 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 8.3 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: 285 J/kg
Mixed-layer CIN: -180 J/kg
Mixed-layer LCL: 1178 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 55 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 7, 4:12 PM EDT, 8 minutes earlier.

Area forecast discussion, Jul 7, 4:12 PM EDT, 8 minutes before

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Hazardous weather outlook, Jul 7, 1:17 PM EDT, 3 hours 3 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
117 PM EDT SUN JUL 7 2013

PAZ012-018-019-024>028-033>036-041-042-045-046-049>053-056>059-
063>066-081730-
NORTHERN CLINTON-NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-
HUNTINGDON-MIFFLIN-JUNIATA-SOMERSET-BEDFORD-FULTON-FRANKLIN-
NORTHERN LYCOMING-SULLIVAN-SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-
SNYDER-MONTOUR-NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-SCHUYLKILL-
LEBANON-CUMBERLAND-ADAMS-YORK-LANCASTER-
117 PM EDT SUN JUL 7 2013

...SEVERE THUNDERSTORM WATCH 394 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.

   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

PAZ004>006-010-011-017-037-081730-
WARREN-MCKEAN-POTTER-ELK-CAMERON-CLEARFIELD-TIOGA-
117 PM EDT SUN JUL 7 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SCATTERED THUNDERSTORMS WILL DEVELOP THIS AFTERNOON. A FEW OF
THESE STORMS MAY CAUSE STRONG WIND GUSTS AND LOCALLY HEAVY RAIN.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

RXR

In the hours before

Local storm report, Jul 7, 2:45 PM EDT, 1 hour 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
245 PM EDT SUN JUL 07 2013

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

0130 PM     TSTM WND DMG     MEYERSDALE              39.81N  79.03W
07/07/2013                   SOMERSET           PA   TRAINED SPOTTER

            TREES AND LIMBS DOWN

&&

EVENT NUMBER CTP1300261

COLBERT

Local storm report, Jul 7, 3:09 PM EDT, 1 hour 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
309 PM EDT SUN JUL 07 2013

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

0250 PM     TSTM WND DMG     2 WNW SAXTON            40.22N  78.28W
07/07/2013                   BEDFORD            PA   911 CALL CENTER

            TREE ACROSS ROAD

&&

EVENT NUMBER CTP1300263

COLBERT

Local storm report, Jul 7, 3:10 PM EDT, 1 hour 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
310 PM EDT SUN JUL 07 2013

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

0243 PM     TSTM WND DMG     HOOVERSVILLE            40.15N  78.91W
07/07/2013                   SOMERSET           PA   911 CALL CENTER

            TREE DOWN ON ROAD

&&

EVENT NUMBER CTP1300264

COLBERT

Local storm report, Jul 7, 3:14 PM EDT, 1 hour 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
314 PM EDT SUN JUL 07 2013

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

0250 PM     TSTM WND DMG     CURRYVILLE              40.28N  78.34W
07/07/2013                   BLAIR              PA   911 CALL CENTER

            MULTIPLE REPORTS OF TREES DOWN.

&&

EVENT NUMBER CTP1300265

COLBERT

Special weather statement, Jul 7, 3:51 PM EDT, 29 minutes before

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Local storm report, Jul 7, 3:53 PM EDT, 27 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
Jul 6, 10:03 PM EDT	Special Weather Statement	CTP	Elk	27 min
Jul 6, 10:30 PM EDT	Special Weather Statement	CTP	Elk	30 min
Jul 7, 12:46 PM EDT	Special Weather Statement	CTP	Somerset	59 min
Jul 7, 12:58 PM EDT	Severe Thunderstorm Warning	CTP	Somerset	62 min
Jul 7, 1:40 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Somerset	65 min
Jul 7, 1:58 PM EDT	Areal Flood Advisory	CTP	Bedford, Somerset	2 hr
Jul 7, 2:25 PM EDT	Flash Flood Warning	CTP	Bedford, Somerset	3 hr
Jul 7, 2:30 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Clearfield	45 min
Jul 7, 2:40 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Fulton, Huntingdon	50 min
Jul 7, 2:46 PM EDT	Areal Flood Advisory	CTP	Blair, Cambria, Centre, Fulton, Huntingdon	3 hr
Jul 7, 3:12 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Centre, Clearfield, Clinton, Huntingdon	63 min
Jul 7, 3:17 PM EDT	Severe Thunderstorm Warning	CTP	Franklin, Fulton, Huntingdon	58 min
Jul 7, 3:20 PM EDT	Severe Thunderstorm Warning	CTP	Franklin, Huntingdon, Juniata, Mifflin, Perry	55 min
Jul 7, 3:51 PM EDT	Special Weather Statement	CTP	Cumberland	54 min
Jul 7, 4:06 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Dauphin, Juniata, Mifflin, Northumberland, Perry and 2 more	54 min
Jul 7, 4:30 PM EDT	Special Weather Statement	CTP	Adams	45 min
Jul 7, 4:45 PM EDT	Severe Thunderstorm Warning	CTP	Columbia, Dauphin, Lycoming, Montour, Northumberland, Schuylkill and 2 more	60 min
Jul 7, 5:05 PM EDT	Areal Flood Advisory	CTP	Lycoming	115 min
Jul 7, 5:10 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon, Schuylkill	65 min
Jul 7, 5:13 PM EDT	Special Weather Statement	CTP	York	32 min
Jul 7, 5:32 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, Lebanon, York	73 min
Jul 7, 5:36 PM EDT	Severe Thunderstorm Warning	CTP	Sullivan	54 min
Jul 7, 5:40 PM EDT	Areal Flood Advisory	CTP	Sullivan	2 hr

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2013 Every severe thunderstorm warning in 2013

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.