Alert archive / North Carolina / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 92, NWS Greenville-Spartanburg, SC

May 7, 1998Avery County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 7, 1998, 10:36 PM EDT for Avery County, North Carolina. It was in force for 34 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 7, 1998, 10:36 PM EDT (02:36 UTC)
Expired: May 7, 1998, 11:10 PM EDT
In force: 34 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Whole counties

County Avery County, NC

What was reported inside it

Time	Report	Where	Remark
May 7, 10:37 PM EDT	Hail 0.88	Ingalls, NC
May 7, 10:52 PM EDT	Hail 1	Crossnore, NC

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 7, 5:30 PM EDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Roanoke, VA (KRNK), launched 00:00Z, 2.6 hours before the alert went out and 250 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: 362 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 622 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 304 m²/s²
0-3 km storm-relative helicity: 350 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.1

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.

NWS Greenville-Spartanburg, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at May 7, 8:29 PM EDT, 2 hours 7 minutes earlier.

Area forecast discussion, May 7, 8:29 PM EDT, 2 hours 7 minutes before

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In the hours before

Local storm report, May 7, 9:41 PM EDT, 55 minutes before

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Local storm report, May 7, 9:47 PM EDT, 49 minutes before

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Local storm report, May 7, 9:47 PM EDT, 49 minutes before

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Special weather statement, May 7, 10:25 PM EDT, 11 minutes before

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Local storm report, May 7, 10:30 PM EDT, 6 minutes before

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Special weather statement, May 7, 10:36 PM EDT, 0 minutes before

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The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 7, 8:10 PM EDT	Severe Thunderstorm Warning	GSP	Rowan	50 min
May 8, 1:08 AM EDT	Severe Thunderstorm Warning	GSP	Rutherford	47 min
May 7, 8:06 PM EDT	Severe Thunderstorm Warning	GSP	Laurens	64 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 1998 Every severe thunderstorm warning in 1998

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.