Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 62, NWS State College, PA

August 29, 1990York County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Aug 29, 1990, 6:17 PM EDT for York County, Pennsylvania. It was in force for 43 min.

The area

The counties it named.

The facts

Issued: Aug 29, 1990, 6:17 PM EDT (22:17 UTC)
Expired: Aug 29, 1990, 7:00 PM EDT
In force: 43 min
Issued by: NWS State College, PA
Area: Whole counties

County York County, PA

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Atlantic City In, NJ (KACY), launched 12:00Z, 10.3 hours before the alert went out and 198 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: 178 J/kg
Mixed-layer CIN: -350 J/kg
Mixed-layer LCL: 1490 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 106 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Aug 29, 4:48 PM EDT, 1 hour 29 minutes before

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Special weather statement, Aug 29, 4:50 PM EDT, 1 hour 27 minutes before

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Special weather statement, Aug 29, 5:26 PM EDT, 51 minutes before

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Special weather statement, Aug 29, 5:27 PM EDT, 50 minutes before

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Special weather statement, Aug 29, 5:58 PM EDT, 19 minutes before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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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 28, 8:25 PM EDT	Severe Thunderstorm Warning	CTP	Tioga	50 min
Aug 28, 9:03 PM EDT	Severe Thunderstorm Warning	CTP	Clinton, Lycoming	60 min
Aug 28, 10:05 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Union	55 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1990 Every severe thunderstorm warning in 1990

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.