Alert archive / South Carolina / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 280, NWS Greenville-Spartanburg, SC

July 20, 1998York County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 20, 1998, 10:15 PM EDT for York County, South Carolina. It was in force for 65 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: Jul 20, 1998, 10:15 PM EDT (02:15 UTC)
Expired: Jul 20, 1998, 11:20 PM EDT
In force: 65 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Whole counties

County York County, SC

What was reported inside it

Time	Report	Where	Remark
Jul 20, 10:25 PM EDT	Thunderstorm Wind 50	Bethany, SC
Jul 20, 11:00 PM EDT	Thunderstorm Wind 50	York, 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 nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 2.3 hours before the alert went out and 169 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: 14 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 2234 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 76 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 Jul 20, 9:56 PM EDT, 19 minutes earlier.

Area forecast discussion, Jul 20, 9:56 PM EDT, 19 minutes before

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In the hours before

Local storm report, Jul 20, 7:09 PM EDT, 3 hours 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
709 PM EDT MON JUL 20 1998

TIME (EDT) .....CITY LOCATION....... ST   ...EVENT/REMARKS...
           .....COUNTY LOCATION.....

652 PM     5 SE PENDLETON            SC   WIND DAMAGE
07/20/98   ANDERSON                       TREES AND POWER LINES DOWN
                                          BETWEEN PENDLETON AND
                                          INTERSTATE 85. REPORT FROM
                                          COUNTY COMMS.

BWM

Local storm report, Jul 20, 7:09 PM EDT, 3 hours 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
709 PM EDT MON JUL 20 1998

TIME (EDT) .....CITY LOCATION....... ST   ...EVENT/REMARKS...
           .....COUNTY LOCATION.....

652 PM     5 SE PENDLETON            SC   WIND DAMAGE
07/20/98   ANDERSON                       TREES AND POWER LINES DOWN
                                          BETWEEN PENDLETON AND
                                          INTERSTATE 85. REPORT FROM
                                          COUNTY COMMS.

BWM

Local storm report, Jul 20, 9:35 PM EDT, 40 minutes before

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Local storm report, Jul 20, 9:35 PM EDT, 40 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
Jul 20, 8:23 PM EDT	Severe Thunderstorm Warning	GSP	Gaston	47 min
Jul 20, 8:51 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Mecklenburg	49 min
Jul 20, 9:09 PM EDT	Flash Flood Warning	GSP	Cabarrus	3 hr
Jul 20, 9:30 PM EDT	Severe Thunderstorm Warning	GSP	Union	65 min
Jul 21, 3:18 PM EDT	Severe Thunderstorm Warning	GSP	Buncombe	47 min
Jul 21, 4:28 PM EDT	Severe Thunderstorm Warning	GSP	McDowell	32 min
Jul 21, 4:51 PM EDT	Severe Thunderstorm Warning	GSP	Burke	49 min
Jul 20, 8:51 PM EDT	Severe Thunderstorm Warning	GSP	York	49 min
Jul 20, 8:59 PM EDT	Severe Thunderstorm Warning	GSP	Greenville	51 min
Jul 20, 9:17 PM EDT	Severe Thunderstorm Warning	GSP	Oconee, Pickens	48 min
Jul 20, 9:55 PM EDT	Severe Thunderstorm Warning	GSP	Spartanburg	65 min
Jul 20, 10:07 PM EDT	Severe Thunderstorm Warning	GSP	Cherokee	33 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.