Alert archive / South Carolina / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 29, NWS Greenville-Spartanburg, SC

April 21, 1992Greenwood County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Apr 21, 1992, 3:59 PM EDT for Greenwood County, South Carolina. It was in force for 61 min. 1 report 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: Apr 21, 1992, 3:59 PM EDT (19:59 UTC)
Expired: Apr 21, 1992, 5:00 PM EDT
In force: 61 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Whole counties

County Greenwood County, SC

What was reported inside it

Time	Report	Where	Remark
Apr 21, 4:45 PM EDT	Hail 1	Greenwood, SC

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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 8.0 hours before the alert went out and 241 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: 734 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 553 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 116 m²/s²
0-3 km storm-relative helicity: 154 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.9

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, Apr 21, 11:55 AM EDT, 4 hours 4 minutes before

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Special weather statement, Apr 21, 12:46 PM EDT, 3 hours 13 minutes before

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Special weather statement, Apr 21, 1:00 PM EDT, 2 hours 59 minutes before

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Special weather statement, Apr 21, 2:31 PM EDT, 1 hour 28 minutes before

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Special weather statement, Apr 21, 3:14 PM EDT, 45 minutes before

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Special weather statement, Apr 21, 3:18 PM EDT, 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
Apr 20, 8:19 PM EDT	Flash Flood Warning	GSP	Avery, Caldwell, Watauga	116 min
Apr 20, 10:45 PM EDT	Flash Flood Warning	GSP	Avery, Burke, McDowell, Mitchell, Yancey	4 hr
Apr 20, 10:45 PM EDT	Flash Flood Warning	GSP	Caldwell, Watauga	4 hr
Apr 21, 2:54 AM EDT	Flash Flood Warning	GSP	Ashe, Avery, Caldwell, Watauga	3 hr
Apr 21, 2:54 AM EDT	Flash Flood Warning	GSP	McDowell, Mitchell, Yancey	3 hr
Apr 21, 2:54 AM EDT	Flash Flood Warning	GSP	Burke	3 hr
Apr 21, 4:28 PM EDT	Severe Thunderstorm Warning	GSP	Cleveland	32 min
Apr 21, 6:29 PM EDT	Flash Flood Warning	GSP	Mecklenburg	3 hr
Apr 21, 6:57 PM EDT	Flash Flood Warning	GSP	Cabarrus	3 hr
Apr 21, 3:24 PM EDT	Severe Thunderstorm Warning	GSP	Spartanburg	51 min
Apr 21, 3:56 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville	64 min
Apr 21, 4:09 PM EDT	Severe Thunderstorm Warning	GSP	Cherokee	58 min
Apr 21, 4:49 PM EDT	Severe Thunderstorm Warning	GSP	Laurens	56 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 1992 Every severe thunderstorm warning in 1992

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.