Alert archive / Pennsylvania / Special Weather Statements in 2021

Special Weather Statement, NWS Pittsburgh, PA

July 13, 2021Washington County, Pennsylvania

NWS Pittsburgh, PA issued this special weather statement at Jul 13, 2021, 3:23 AM EDT for Washington County, Pennsylvania. It was in force for 37 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 13, 2021, 3:23 AM EDT (07:23 UTC)
Expired: Jul 13, 2021, 4:00 AM EDT
In force: 37 min
Issued by: NWS Pittsburgh, PA

County Washington County, PA

The radar

The Pittsburgh radar (KPBZ), 37 km from the middle of the area, began a volume at 07:25 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 00:00Z, 7.4 hours before the alert went out and 24 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: 307 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 1341 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 73 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

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 13, 3:16 AM EDT, 7 minutes earlier.

Area forecast discussion, Jul 13, 3:16 AM EDT, 7 minutes before

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Hazardous weather outlook, Jul 13, 2:39 AM EDT, 44 minutes before

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In the hours before

Special weather statement, Jul 13, 2:15 AM EDT, 1 hour 8 minutes before

Special Weather Statement
National Weather Service Pittsburgh PA
215 AM EDT Tue Jul 13 2021

WVZ004-012-130645-
Marshall-Wetzel-
215 AM EDT Tue Jul 13 2021

...A STRONG THUNDERSTORM CAPABLE OF PRODUCING GUSTY WIND AND HEAVY
RAIN WILL AFFECT NORTHWESTERN WETZEL AND MARSHALL COUNTIES...

At 215 AM EDT, a strong thunderstorm was located near New
Martinsville, moving northeast at 25 mph.

Wind gusts up to 45 mph are possible with this storm.

Locations impacted include...
New Martinsville...               Cameron...
Rocklick...                       Lynn Camp...
Lone Oak...                       Glen Easton...
Proctor...                        Beelers Station...

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

Frequent cloud to ground lightning is occurring with this storm. Seek
safe shelter inside a building or vehicle.

LAT...LON 3959 8081 3965 8087 3969 8086 3971 8083
      3974 8086 3996 8060 3989 8052 3975 8052
TIME...MOT...LOC 0615Z 229DEG 23KT 3968 8079

Special weather statement, Jul 13, 3:23 AM EDT, 0 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
Jul 12, 8:00 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Venango	30 min
Jul 13, 3:37 AM EDT	Severe Thunderstorm Warning	PBZ	Washington	22 min
Jul 13, 3:53 AM EDT	Special Weather Statement	PBZ	Allegheny	37 min
Jul 13, 4:06 AM EDT	Special Weather Statement	PBZ	Westmoreland	24 min
Jul 13, 4:10 AM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Westmoreland	35 min
Jul 13, 4:17 AM EDT	Special Weather Statement	PBZ	Armstrong	28 min
Jul 13, 4:41 AM EDT	Special Weather Statement	PBZ	Indiana	34 min
Jul 13, 5:24 AM EDT	Special Weather Statement	PBZ	Indiana	36 min
Jul 13, 3:04 PM EDT	Special Weather Statement	PBZ	Lawrence	26 min
Jul 13, 3:14 PM EDT	Severe Thunderstorm Warning	PBZ	Butler, Lawrence, Mercer	31 min
Jul 13, 3:25 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	35 min
Jul 13, 3:36 PM EDT	Severe Thunderstorm Warning	PBZ	Butler, Mercer, Venango	39 min
Jul 13, 3:39 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Butler	51 min
Jul 13, 4:05 PM EDT	Severe Thunderstorm Warning	PBZ	Forest, Mercer, Venango	40 min
Jul 13, 4:11 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Venango	49 min
Jul 13, 4:14 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Butler, Lawrence	31 min
Jul 13, 4:25 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion, Indiana, Jefferson	50 min
Jul 13, 4:41 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Venango	34 min
Jul 13, 4:47 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Clarion, Forest, Jefferson, Venango	43 min
Jul 13, 4:50 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Westmoreland	40 min
Jul 13, 5:00 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Venango	45 min
Jul 13, 5:08 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Jefferson	52 min
Jul 13, 5:12 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Jefferson, Venango	48 min
Jul 13, 5:25 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Jefferson, Westmoreland	50 min
Jul 13, 5:47 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Greene, Washington, Westmoreland	28 min
Jul 13, 6:08 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Jefferson, Westmoreland	37 min
Jul 13, 6:14 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	31 min
Jul 13, 6:43 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Indiana, Westmoreland	32 min
Jul 13, 2:15 AM EDT	Special Weather Statement	PBZ	Marshall	30 min
Jul 13, 6:13 PM EDT	Severe Thunderstorm Warning	PBZ	Preston	32 min
Jul 13, 2:33 PM EDT	Special Weather Statement	PBZ	Jefferson	27 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.