Alert archive / Pennsylvania / Special Weather Statements in 2018

Special Weather Statement, NWS State College, PA

April 28, 20185 counties in Pennsylvania

NWS State College, PA issued this special weather statement at Apr 28, 2018, 4:03 PM EDT for 5 counties in Pennsylvania. It was in force for 27 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: Apr 28, 2018, 4:03 PM EDT (20:03 UTC)
Expired: Apr 28, 2018, 4:30 PM EDT
In force: 27 min
Issued by: NWS State College, PA

Counties Adams County, PA, Lancaster County, PA, Lebanon County, PA, Schuylkill County, PA, York County, PA

The radar

The State College radar (KCCX), 159 km from the middle of the area, began a volume at 20:04 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

Washington/Dulle, VA (KIAD), launched 12:00Z, 8.1 hours before the alert went out and 164 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1603 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 67 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Apr 28, 3:50 PM EDT, 13 minutes earlier.

Area forecast discussion, Apr 28, 3:50 PM EDT, 13 minutes before

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Hazardous weather outlook, Apr 28, 11:13 AM EDT, 4 hours 50 minutes before

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In the hours before

Special weather statement, Apr 28, 4:03 PM EDT, 0 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
Apr 27, 8:11 PM EDT	Special Weather Statement	CTP	Blair, Centre	64 min
Apr 27, 8:20 PM EDT	Special Weather Statement	CTP	Huntingdon, Mifflin	25 min
Apr 27, 8:26 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clearfield	34 min
Apr 27, 8:52 PM EDT	Special Weather Statement	CTP	Centre, Clinton	38 min
Apr 27, 9:02 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton	58 min
Apr 27, 9:43 PM EDT	Special Weather Statement	CTP	Lycoming, Union	47 min
Apr 27, 10:05 PM EDT	Special Weather Statement	CTP	Franklin, Fulton, Huntingdon, Mifflin	55 min
Apr 27, 11:38 PM EDT	Special Weather Statement	CTP	Adams, Cumberland, York	52 min
Apr 28, 5:18 AM EDT	Dense Fog Advisory	CTP	Lancaster, Lebanon, York	4 hr
Apr 28, 9:03 AM EDT	Dense Fog Advisory	CTP	Lancaster, Lebanon, York	117 min
Apr 28, 4:56 PM EDT	Special Weather Statement	CTP	Lancaster	34 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; radar from the NEXRAD Level II archive.