Alert archive / Pennsylvania / Special Weather Statements in 2018

Special Weather Statement, NWS Pittsburgh, PA

July 27, 2018Indiana County, Pennsylvania

NWS Pittsburgh, PA issued this special weather statement at Jul 27, 2018, 2:21 PM EDT for Indiana County, Pennsylvania. It was in force for 24 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 27, 2018, 2:21 PM EDT (18:21 UTC)
Expired: Jul 27, 2018, 2:45 PM EDT
In force: 24 min
Issued by: NWS Pittsburgh, PA

County Indiana County, PA

The nearest sounding before it

Pittsburgh, PA (KAGC), launched 12:00Z, 6.4 hours before the alert went out and 94 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: 67 J/kg
Mixed-layer CIN: -123 J/kg
Mixed-layer LCL: 852 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 120 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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 27, 2:03 PM EDT, 18 minutes earlier.

Area forecast discussion, Jul 27, 2:03 PM EDT, 18 minutes before

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Hazardous weather outlook, Jul 27, 3:16 AM EDT, 11 hours 5 minutes before

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In the hours before

Local storm report, Jul 27, 9:01 AM EDT, 5 hours 20 minutes before

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Local storm report, Jul 27, 12:03 PM EDT, 2 hours 18 minutes before

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Local storm report, Jul 27, 12:21 PM EDT, 2 hours before

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Special weather statement, Jul 27, 1:57 PM EDT, 24 minutes before

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Special weather statement, Jul 27, 2:21 PM 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 26, 8:02 PM EDT	Special Weather Statement	PBZ	Venango	28 min
Jul 26, 8:54 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	36 min
Jul 26, 9:30 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	30 min
Jul 27, 6:15 AM EDT	Special Weather Statement	PBZ	Washington	30 min
Jul 27, 6:40 AM EDT	Special Weather Statement	PBZ	Westmoreland	35 min
Jul 27, 7:15 AM EDT	Special Weather Statement	PBZ	Westmoreland	30 min
Jul 27, 1:57 PM EDT	Special Weather Statement	PBZ	Indiana	33 min
Jul 27, 2:31 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana	29 min
Jul 27, 4:49 PM EDT	Special Weather Statement	PBZ	Indiana	26 min

Nearby

Special Weather Statements in Pennsylvania, 2018 Every special weather statement in 2018

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.