Alert archive / North Carolina / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 133, NWS Greenville-Spartanburg, SC

August 20, 1999Mitchell County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 20, 1999, 2:12 AM EDT for Mitchell County, North Carolina. It was in force for 48 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: Aug 20, 1999, 2:12 AM EDT (06:12 UTC)
Expired: Aug 20, 1999, 3:00 AM EDT
In force: 48 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Whole counties

County Mitchell County, NC

What was reported inside it

Time	Report	Where	Remark
Aug 20, 2:30 AM EDT	Thunderstorm Wind 50	Bakersville, NC
Aug 20, 2:45 AM EDT	Thunderstorm Wind 50	Spruce Pine, 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 nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 6.2 hours before the alert went out and 363 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: 3343 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 13 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.

NWS Greenville-Spartanburg, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 19, 9:39 PM EDT, 4 hours 33 minutes earlier.

Area forecast discussion, Aug 19, 9:39 PM EDT, 4 hours 33 minutes before

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In the hours before

Local storm report, Aug 19, 10:31 PM EDT, 3 hours 41 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
Aug 20, 1:49 AM EDT	Severe Thunderstorm Warning	GSP	Yancey	46 min
Aug 20, 2:42 AM EDT	Severe Thunderstorm Warning	GSP	Avery, Burke, McDowell	43 min
Aug 20, 3:12 AM EDT	Severe Thunderstorm Warning	GSP	Caldwell	43 min
Aug 20, 3:25 AM EDT	Severe Thunderstorm Warning	GSP	Burke	45 min
Aug 20, 3:51 PM EDT	Severe Thunderstorm Warning	GSP	Buncombe, Henderson	34 min
Aug 20, 4:15 PM EDT	Tornado Warning	GSP	Polk	60 min
Aug 19, 9:56 PM EDT	Severe Thunderstorm Warning	GSP	Chester	34 min
Aug 20, 3:12 PM EDT	Severe Thunderstorm Warning	GSP	Oconee	48 min
Aug 20, 3:46 PM EDT	Severe Thunderstorm Warning	GSP	Pickens	49 min
Aug 20, 3:58 PM EDT	Severe Thunderstorm Warning	GSP	Oconee	47 min
Aug 20, 4:24 PM EDT	Severe Thunderstorm Warning	GSP	Anderson	51 min
Aug 20, 4:43 PM EDT	Severe Thunderstorm Warning	GSP	Greenville, Spartanburg	62 min
Aug 20, 5:22 PM EDT	Severe Thunderstorm Warning	GSP	Anderson	33 min
Aug 20, 5:31 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville	64 min
Aug 20, 5:43 PM EDT	Severe Thunderstorm Warning	GSP	Spartanburg	47 min
Aug 20, 6:06 PM EDT	Tornado Warning	GSP	Spartanburg	29 min
Aug 20, 6:26 PM EDT	Severe Thunderstorm Warning	GSP	Laurens	49 min
Aug 20, 6:40 PM EDT	Severe Thunderstorm Warning	GSP	Spartanburg	35 min
Aug 20, 5:14 PM EDT	Severe Thunderstorm Warning	GSP	Hart	31 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 1999 Every severe thunderstorm warning in 1999

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.