Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 69, NWS Pittsburgh, PA

June 14, 20154 counties in Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at Jun 14, 2015, 3:30 PM EDT for 4 counties in Pennsylvania. It was in force for 45 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: Jun 14, 2015, 3:30 PM EDT (19:30 UTC)
Expired: Jun 14, 2015, 4:15 PM EDT
In force: 45 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Butler County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA

The radar

The Pittsburgh radar (KPBZ), 70 km from the middle of the area, began a volume at 19:34 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

Pittsburgh, PA (KAGC), launched 12:00Z, 7.5 hours before the alert went out and 83 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: 131 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 689 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 74 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 Pittsburgh, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 14, 1:50 PM EDT, 1 hour 40 minutes earlier.

Area forecast discussion, Jun 14, 1:50 PM EDT, 1 hour 40 minutes before

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Hazardous weather outlook, Jun 14, 3:24 PM EDT, 6 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PITTSBURGH PA
324 PM EDT SUN JUN 14 2015

OHZ041-PAZ007>009-013>016-020>023-029-073>076-151930-
COLUMBIANA-MERCER-VENANGO-FOREST-LAWRENCE-BUTLER-CLARION-
JEFFERSON PA-BEAVER-ALLEGHENY-ARMSTRONG-INDIANA-WASHINGTON-
WESTMORELAND-WESTMORELAND RIDGES-FAYETTE-FAYETTE RIDGES-
324 PM EDT SUN JUN 14 2015

...FLASH FLOOD WATCH IN EFFECT UNTIL 1 AM EDT MONDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL OHIO...NORTHWEST
PENNSYLVANIA...SOUTHWEST PENNSYLVANIA AND WEST CENTRAL PENNSYLVANIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLASH FLOOD WATCH.

ADDITIONALLY THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS
THROUGH THE EVENING...WITH DAMAGING WINDS BEING THE MAIN THREAT.

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

THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS BOTH MONDAY AND TUESDAY
AFTERNOON AND EVENING...WITH DAMAGING WINDS BEING THE MAIN THREAT.

.SPOTTER INFORMATION STATEMENT...

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

MDZ001-OHZ039-040-048>050-057>059-068-069-PAZ031-WVZ001>004-012-
021>023-041-151930-
GARRETT-TUSCARAWAS-CARROLL-COSHOCTON-HARRISON-JEFFERSON OH-MUSKINGUM-
GUERNSEY-BELMONT-NOBLE-MONROE-GREENE-HANCOCK-BROOKE-OHIO-MARSHALL-
WETZEL-MARION-MONONGALIA-PRESTON-TUCKER-
324 PM EDT SUN JUN 14 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MARYLAND...EAST
CENTRAL OHIO...SOUTHWEST PENNSYLVANIA...NORTHERN WEST VIRGINIA AND
NORTHERN PANHANDLE OF WEST VIRGINIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS THROUGH THE
EVENING...WITH DAMAGING WINDS BEING THE MAIN THREAT.

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

THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS BOTH MONDAY AND TUESDAY
AFTERNOON AND EVENING...WITH DAMAGING WINDS BEING THE MAIN THREAT.

.SPOTTER INFORMATION STATEMENT...

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

In the hours before

Special weather statement, Jun 14, 2:50 PM EDT, 40 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 8:42 PM EDT	Special Weather Statement	PBZ	Butler	33 min
Jun 14, 3:15 PM EDT	Flash Flood Watch	PBZ	Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 8 more	41 hr
Jun 14, 3:47 PM EDT	Special Weather Statement	PBZ	Washington	43 min
Jun 14, 4:15 PM EDT	Special Weather Statement	PBZ	Fayette	45 min
Jun 14, 4:16 PM EDT	Areal Flood Advisory	PBZ	Butler, Lawrence, Mercer	3 hr
Jun 14, 4:27 PM EDT	Special Weather Statement	PBZ	Indiana	63 min
Jun 14, 4:34 PM EDT	Special Weather Statement	PBZ	Westmoreland	56 min
Jun 14, 5:13 PM EDT	Special Weather Statement	PBZ	Westmoreland	47 min
Jun 14, 5:24 PM EDT	Special Weather Statement	PBZ	Mercer	51 min
Jun 14, 5:29 PM EDT	Special Weather Statement	PBZ	Armstrong	46 min
Jun 14, 5:55 PM EDT	Special Weather Statement	PBZ	Butler	50 min
Jun 14, 6:02 PM EDT	Special Weather Statement	PBZ	Beaver	43 min
Jun 14, 6:07 PM EDT	Special Weather Statement	PBZ	Armstrong, Indiana	53 min
Jun 14, 6:45 PM EDT	Special Weather Statement	PBZ	Butler	45 min
Jun 14, 6:48 PM EDT	Special Weather Statement	PBZ	Butler	42 min
Jun 14, 6:58 PM EDT	Special Weather Statement	PBZ	Lawrence	47 min
Jun 14, 7:00 PM EDT	Areal Flood Advisory	PBZ	Butler	3 hr
Jun 14, 7:11 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Venango	49 min
Jun 14, 7:24 PM EDT	Flash Flood Warning	PBZ	Armstrong	3 hr
Jun 14, 7:47 PM EDT	Special Weather Statement	PBZ	Forest	43 min
Jun 14, 2:50 PM EDT	Special Weather Statement	PBZ	Columbiana	40 min
Jun 14, 4:51 PM EDT	Special Weather Statement	PBZ	Monroe	24 min
Jun 14, 5:37 PM EDT	Severe Thunderstorm Warning	PBZ	Carroll, Columbiana, Jefferson	38 min
Jun 14, 7:31 PM EDT	Special Weather Statement	PBZ	Harrison	44 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2015 Every severe thunderstorm warning in 2015

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.