Alert archive / North Carolina / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 263, NWS Greenville-Spartanburg, SC

July 24, 2020Union County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 24, 2020, 3:44 PM EDT for Union County, North Carolina. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 24, 2020, 3:44 PM EDT (19:44 UTC)
Expired: Jul 24, 2020, 4:11 PM EDT
In force: 27 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Union County, NC

The radar

The Columbia radar (KCAE), 128 km from the middle of the area, began a volume at 19:44 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.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 7.7 hours before the alert went out and 134 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: 199 J/kg
Mixed-layer CIN: -91 J/kg
Mixed-layer LCL: 791 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 48 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 24, 2:36 PM EDT, 1 hour 8 minutes earlier.

Area forecast discussion, Jul 24, 2:36 PM EDT, 1 hour 8 minutes before

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Hazardous weather outlook, Jul 24, 5:17 AM EDT, 10 hours 27 minutes before

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In the hours before

Special weather statement, Jul 24, 3:25 PM EDT, 19 minutes before

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Local storm report, Jul 24, 3:28 PM EDT, 16 minutes before

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Local storm report, Jul 24, 3:29 PM EDT, 15 minutes before

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Special weather statement, Jul 24, 3:35 PM EDT, 9 minutes before

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Special weather statement, Jul 24, 3:39 PM EDT, 5 minutes before

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Special weather statement, Jul 24, 3:42 PM EDT, 2 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 23, 8:11 PM EDT	Special Weather Statement	GSP	Alexander, Catawba, Iredell	34 min
Jul 23, 8:12 PM EDT	Special Weather Statement	GSP	Rutherford	33 min
Jul 24, 11:41 AM EDT	Special Weather Statement	GSP	Haywood	19 min
Jul 24, 11:50 AM EDT	Special Weather Statement	GSP	Graham	25 min
Jul 24, 12:31 PM EDT	Special Weather Statement	GSP	Transylvania	29 min
Jul 24, 12:47 PM EDT	Special Weather Statement	GSP	Macon	28 min
Jul 24, 12:51 PM EDT	Special Weather Statement	GSP	Transylvania	24 min
Jul 24, 1:13 PM EDT	Special Weather Statement	GSP	Jackson	32 min
Jul 24, 1:34 PM EDT	Special Weather Statement	GSP	Graham	26 min
Jul 24, 1:53 PM EDT	Special Weather Statement	GSP	Polk	37 min
Jul 24, 2:37 PM EDT	Special Weather Statement	GSP	Polk	23 min
Jul 24, 3:25 PM EDT	Special Weather Statement	GSP	Union	35 min
Jul 24, 3:42 PM EDT	Special Weather Statement	GSP	Union	33 min
Jul 24, 4:03 PM EDT	Severe Thunderstorm Warning	GSP	Mecklenburg	42 min
Jul 24, 4:16 PM EDT	Special Weather Statement	GSP	Union	29 min
Jul 24, 4:22 PM EDT	Special Weather Statement	GSP	Union	23 min
Jul 24, 5:08 PM EDT	Special Weather Statement	GSP	Mecklenburg	37 min
Jul 24, 5:11 PM EDT	Special Weather Statement	GSP	Union	34 min
Jul 23, 9:16 PM EDT	Special Weather Statement	GSP	York	29 min
Jul 23, 9:53 PM EDT	Special Weather Statement	GSP	Chester	37 min
Jul 23, 10:44 PM EDT	Special Weather Statement	GSP	Chester	46 min
Jul 24, 12:53 PM EDT	Severe Thunderstorm Warning	GSP	Greenville, Pickens	52 min
Jul 24, 1:02 PM EDT	Special Weather Statement	GSP	Pickens	28 min
Jul 24, 1:08 PM EDT	Special Weather Statement	GSP	Greenville	37 min
Jul 24, 1:25 PM EDT	Severe Thunderstorm Warning	GSP	Greenville, Spartanburg	50 min
Jul 24, 1:29 PM EDT	Special Weather Statement	GSP	Pickens	31 min
Jul 24, 1:40 PM EDT	Special Weather Statement	GSP	Oconee	35 min
Jul 24, 2:08 PM EDT	Special Weather Statement	GSP	Greenville	52 min
Jul 24, 2:21 PM EDT	Severe Thunderstorm Warning	GSP	Greenville, Laurens, Spartanburg	39 min
Jul 24, 2:34 PM EDT	Areal Flood Advisory	GSP	Greenville	3 hr
Jul 24, 2:41 PM EDT	Special Weather Statement	GSP	Anderson	34 min
Jul 24, 2:44 PM EDT	Special Weather Statement	GSP	Union	31 min
Jul 24, 2:49 PM EDT	Special Weather Statement	GSP	Chester	26 min
Jul 24, 2:52 PM EDT	Special Weather Statement	GSP	Laurens	23 min
Jul 24, 3:08 PM EDT	Special Weather Statement	GSP	Spartanburg	37 min
Jul 24, 3:11 PM EDT	Special Weather Statement	GSP	Chester	34 min
Jul 24, 3:13 PM EDT	Special Weather Statement	GSP	Abbeville, Anderson, Laurens	32 min
Jul 24, 3:15 PM EDT	Special Weather Statement	GSP	Union	30 min
Jul 24, 3:24 PM EDT	Special Weather Statement	GSP	Cherokee	36 min
Jul 24, 3:35 PM EDT	Special Weather Statement	GSP	Union	25 min
Jul 24, 3:39 PM EDT	Special Weather Statement	GSP	Chester	36 min
Jul 24, 3:52 PM EDT	Special Weather Statement	GSP	York	23 min
Jul 24, 4:01 PM EDT	Areal Flood Advisory	GSP	Cherokee	2 hr
Jul 24, 4:05 PM EDT	Severe Thunderstorm Warning	GSP	Chester, York	40 min
Jul 24, 4:35 PM EDT	Special Weather Statement	GSP	Chester	40 min
Jul 24, 4:46 PM EDT	Special Weather Statement	GSP	York	29 min
Jul 24, 5:03 PM EDT	Areal Flood Advisory	GSP	Chester, York	3 hr
Jul 24, 5:24 PM EDT	Areal Flood Advisory	GSP	Greenville, Spartanburg	3 hr
Jul 24, 3:03 PM EDT	Special Weather Statement	GSP	Stephens	27 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2020 Every severe thunderstorm warning in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.