Alert archive / Pennsylvania / Special Weather Statements in 2018

Special Weather Statement, NWS State College, PA

August 18, 2018Warren County, Pennsylvania

NWS State College, PA issued this special weather statement at Aug 18, 2018, 1:13 AM EDT for Warren County, Pennsylvania. It was in force for 77 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: Aug 18, 2018, 1:13 AM EDT (05:13 UTC)
Expired: Aug 18, 2018, 2:30 AM EDT
In force: 77 min
Issued by: NWS State College, PA

County Warren County, PA

The radar

The State College radar (KCCX), 129 km from the middle of the area, began a volume at 05:15 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

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 5.2 hours before the alert went out and 143 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: 230 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 961 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: -23 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 State College, PA wrote its last area forecast discussion before this special weather statement went out at Aug 17, 7:38 PM EDT, 5 hours 35 minutes earlier.

Area forecast discussion, Aug 17, 7:38 PM EDT, 5 hours 35 minutes before

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Hazardous weather outlook, Aug 17, 7:42 PM EDT, 5 hours 31 minutes before

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In the hours before

Special weather statement, Aug 17, 7:23 PM EDT, 5 hours 50 minutes before

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Local storm report, Aug 17, 7:51 PM EDT, 5 hours 22 minutes before

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Local storm report, Aug 17, 7:56 PM EDT, 5 hours 17 minutes before

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Local storm report, Aug 17, 7:58 PM EDT, 5 hours 15 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
Aug 17, 11:39 PM EDT	Special Weather Statement	CTP	Lancaster	66 min
Aug 18, 12:52 AM EDT	Areal Flood Advisory	CTP	Lancaster, York	3 hr

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; radar from the NEXRAD Level II archive.