Alert archive / South Carolina / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 33, NWS Greenville-Spartanburg, SC

April 9, 1998Laurens County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Apr 9, 1998, 3:06 AM EDT for Laurens County, South Carolina. It was in force for 24 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 9, 1998, 3:06 AM EDT (07:06 UTC)
Expired: Apr 9, 1998, 3:30 AM EDT
In force: 24 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Whole counties

County Laurens County, SC

The radar

The Greer radar (KGSP), 49 km from the middle of the area, began a volume at 07:07 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.

What was reported inside it

Time	Report	Where	Remark
Apr 9, 3:20 AM EDT	Hail 1	Clinton, 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 9, 1:15 AM EDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 7.1 hours before the alert went out and 256 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: 942 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 176 m²/s²
0-3 km storm-relative helicity: 320 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 Apr 8, 8:45 PM EDT, 6 hours 21 minutes earlier.

Area forecast discussion, Apr 8, 8:45 PM EDT, 6 hours 21 minutes before

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In the hours before

Local storm report, Apr 8, 9:06 PM EDT, 6 hours before

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Local storm report, Apr 8, 9:06 PM EDT, 6 hours before

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Special weather statement, Apr 8, 9:51 PM EDT, 5 hours 15 minutes before

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Special weather statement, Apr 8, 9:51 PM EDT, 5 hours 15 minutes before

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Special weather statement, Apr 8, 11:22 PM EDT, 3 hours 44 minutes before

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Special weather statement, Apr 8, 11:22 PM EDT, 3 hours 44 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 9, 5:30 AM EDT	Flash Flood Warning	GSP	Cabarrus, Mecklenburg, Union	3 hr
Apr 8, 8:28 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville	47 min
Apr 8, 8:48 PM EDT	Severe Thunderstorm Warning	GSP	Greenwood	57 min
Apr 9, 3:56 AM EDT	Severe Thunderstorm Warning	GSP	Chester	34 min
Apr 8, 8:06 PM EDT	Severe Thunderstorm Warning	GSP	Elbert	54 min

Nearby

Severe Thunderstorm Warnings in South 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; radar from the NEXRAD Level II archive.