Alert archive / Pennsylvania / Special Weather Statements in 2021

Special Weather Statement, NWS Pittsburgh, PA

July 29, 2021Venango County, Pennsylvania

NWS Pittsburgh, PA issued this special weather statement at Jul 29, 2021, 8:47 AM EDT for Venango County, Pennsylvania. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 29, 2021, 8:47 AM EDT (12:47 UTC)
Expired: Jul 29, 2021, 9:15 AM EDT
In force: 28 min
Issued by: NWS Pittsburgh, PA

County Venango County, PA

The radar

The Pittsburgh radar (KPBZ), 126 km from the middle of the area, began a volume at 12:50 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 (KPIT), launched 12:00Z, 0.8 hours before the alert went out and 135 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: 136 J/kg
Mixed-layer CIN: -76 J/kg
Mixed-layer LCL: 1222 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 175 m²/s²
0-3 km storm-relative helicity: 213 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 29, 6:54 AM EDT, 1 hour 53 minutes earlier.

Area forecast discussion, Jul 29, 6:54 AM EDT, 1 hour 53 minutes before

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Hazardous weather outlook, Jul 29, 3:34 AM EDT, 5 hours 13 minutes before

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In the hours before

Special weather statement, Jul 29, 8:47 AM EDT, 0 minutes before

Special Weather Statement
National Weather Service Pittsburgh PA
847 AM EDT Thu Jul 29 2021

PAZ008-009-291315-
Forest-Venango-
847 AM EDT Thu Jul 29 2021

...A STRONG THUNDERSTORM CAPABLE OF PRODUCING HAIL AND GUSTY WIND
WILL AFFECT NORTHEASTERN VENANGO AND NORTHWESTERN FOREST COUNTIES...

At 846 AM EDT, a strong thunderstorm was located near Titusville, or
8 miles north of Oil City, moving east at 25 mph.

Wind gusts up to 45 mph and hail up to the size of nickels are
possible with this storm.

Locations impacted include...
Tionesta...                       Pleasantville...
West Hickory...                   East Hickory...
Oil Creek State Park...

LAT...LON 4144 7941 4151 7983 4162 7981 4162 7961
      4163 7949 4163 7938
TIME...MOT...LOC 1246Z 277DEG 24KT 4155 7973

CL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 12:51 PM EDT	Special Weather Statement	PBZ	Venango	24 min
Jul 29, 1:58 PM EDT	Tornado Warning	PBZ	Fayette, Westmoreland	22 min
Jul 29, 3:34 PM EDT	Special Weather Statement	PBZ	Armstrong	26 min
Jul 29, 4:01 PM EDT	Special Weather Statement	PBZ	Armstrong	29 min
Jul 29, 4:43 PM EDT	Special Weather Statement	PBZ	Beaver	32 min
Jul 29, 5:09 PM EDT	Special Weather Statement	PBZ	Indiana	36 min
Jul 29, 5:15 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana	30 min
Jul 29, 5:24 PM EDT	Severe Thunderstorm Warning	PBZ	Greene, Washington	36 min
Jul 29, 5:48 PM EDT	Tornado Warning	PBZ	Greene, Washington	27 min
Jul 29, 5:59 PM EDT	Tornado Warning Tornado observed	PBZ	Washington	31 min
Jul 29, 6:08 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene	52 min
Jul 29, 6:14 PM EDT	Severe Thunderstorm Warning	PBZ	Greene	32 min
Jul 29, 6:32 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene	28 min
Jul 29, 6:35 PM EDT	Special Weather Statement	PBZ	Washington	25 min
Jul 29, 6:55 PM EDT	Special Weather Statement	PBZ	Washington	35 min
Jul 29, 7:00 PM EDT	Severe Thunderstorm Warning	PBZ	Greene, Washington	45 min
Jul 29, 7:34 PM EDT	Special Weather Statement	PBZ	Greene	26 min
Jul 29, 4:53 PM EDT	Tornado Warning	PBZ	Brooke	22 min
Jul 29, 5:28 PM EDT	Severe Thunderstorm Warning	PBZ	Brooke, Hancock	47 min
Jul 29, 5:37 PM EDT	Severe Thunderstorm Warning	PBZ	Marshall	38 min
Jul 29, 5:39 PM EDT	Tornado Warning	PBZ	Brooke, Hancock	21 min
Jul 29, 6:12 PM EDT	Severe Thunderstorm Warning	PBZ	Brooke, Ohio	48 min
Jul 29, 3:18 PM EDT	Special Weather Statement	PBZ	Muskingum	27 min
Jul 29, 3:31 PM EDT	Severe Thunderstorm Warning	PBZ	Coshocton, Guernsey, Muskingum	44 min
Jul 29, 4:05 PM EDT	Special Weather Statement	PBZ	Columbiana	25 min
Jul 29, 4:12 PM EDT	Severe Thunderstorm Warning	PBZ	Guernsey, Monroe, Muskingum, Noble	48 min
Jul 29, 4:15 PM EDT	Special Weather Statement	PBZ	Guernsey	45 min
Jul 29, 4:20 PM EDT	Special Weather Statement	PBZ	Harrison	25 min
Jul 29, 4:30 PM EDT	Severe Thunderstorm Warning	PBZ	Carroll, Columbiana, Jefferson	45 min
Jul 29, 4:48 PM EDT	Severe Thunderstorm Warning	PBZ	Belmont, Harrison, Jefferson	14 min
Jul 29, 4:54 PM EDT	Severe Thunderstorm Warning	PBZ	Monroe, Noble	36 min
Jul 29, 5:02 PM EDT	Tornado Warning	PBZ	Carroll, Columbiana, Jefferson	13 min
Jul 29, 5:14 PM EDT	Tornado Warning	PBZ	Carroll, Columbiana, Jefferson	16 min
Jul 29, 6:36 PM EDT	Severe Thunderstorm Warning	PBZ	Belmont, Harrison, Jefferson	24 min

Nearby

Special Weather Statements in Pennsylvania, 2021 Every special weather statement in 2021

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.