Alert archive / North Carolina / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 155, NWS Greenville-Spartanburg, SC

July 31, 2019Mecklenburg County, North Carolina; York County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 31, 2019, 4:20 PM EDT for Mecklenburg County, North Carolina; York County, South Carolina. It was in force for 40 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 31, 2019, 4:20 PM EDT (20:20 UTC)
Expired: Jul 31, 2019, 5:00 PM EDT
In force: 40 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Mecklenburg County, NC, York County, SC

The radar

The Greer radar (KGSP), 113 km from the middle of the area, began a volume at 20:21 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

Charleston AFB, SC (KCHS), launched 12:00Z, 8.3 hours before the alert went out and 263 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: 520 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 1079 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -15 m²/s²
0-3 km storm-relative helicity: 34 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 31, 2:34 PM EDT, 1 hour 46 minutes earlier.

Area forecast discussion, Jul 31, 2:34 PM EDT, 1 hour 46 minutes before

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Hazardous weather outlook, Jul 31, 4:40 AM EDT, 11 hours 40 minutes before

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In the hours before

Special weather statement, Jul 31, 1:17 PM EDT, 3 hours 3 minutes before

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Special weather statement, Jul 31, 1:37 PM EDT, 2 hours 43 minutes before

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Special weather statement, Jul 31, 1:40 PM EDT, 2 hours 40 minutes before

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Local storm report, Jul 31, 4:01 PM EDT, 19 minutes before

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Special weather statement, Jul 31, 4:10 PM EDT, 10 minutes before

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Special weather statement, Jul 31, 4:13 PM EDT, 7 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 31, 1:17 PM EDT	Special Weather Statement	GSP	Yancey	28 min
Jul 31, 1:37 PM EDT	Special Weather Statement	GSP	Transylvania	23 min
Jul 31, 1:40 PM EDT	Special Weather Statement	GSP	Avery	35 min
Jul 31, 1:59 PM EDT	Severe Thunderstorm Warning	GSP	Burke	31 min
Jul 31, 2:29 PM EDT	Severe Thunderstorm Warning	GSP	Avery	18 min
Jul 31, 3:21 PM EDT	Severe Thunderstorm Warning	GSP	Burke, Caldwell, Catawba	39 min
Jul 31, 4:10 PM EDT	Special Weather Statement	GSP	Lincoln	35 min
Jul 31, 4:13 PM EDT	Special Weather Statement	GSP	Mecklenburg	32 min
Jul 31, 4:26 PM EDT	Special Weather Statement	GSP	Cabarrus	34 min
Jul 31, 5:28 PM EDT	Special Weather Statement	GSP	Transylvania	32 min
Jul 31, 5:30 PM EDT	Special Weather Statement	GSP	Haywood	30 min
Jul 31, 5:46 PM EDT	Special Weather Statement	GSP	Polk	29 min
Jul 31, 5:53 PM EDT	Special Weather Statement	GSP	Rowan	37 min
Jul 31, 6:03 PM EDT	Special Weather Statement	GSP	Gaston	27 min
Jul 31, 6:05 PM EDT	Special Weather Statement	GSP	Transylvania	25 min
Jul 31, 6:11 PM EDT	Severe Thunderstorm Warning	GSP	Buncombe, Henderson, McDowell, Rutherford	49 min
Jul 31, 6:17 PM EDT	Severe Thunderstorm Warning	GSP	Madison	23 min
Jul 31, 6:36 PM EDT	Special Weather Statement	GSP	Cleveland	24 min
Jul 31, 7:00 PM EDT	Severe Thunderstorm Warning	GSP	Polk, Rutherford	45 min
Jul 31, 7:07 PM EDT	Special Weather Statement	GSP	Cleveland	23 min
Jul 31, 7:19 PM EDT	Flash Flood Warning	GSP	Henderson, Rutherford	3 hr
Jul 31, 6:28 PM EDT	Special Weather Statement	GSP	York	32 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2019 Severe Thunderstorm Warnings in South Carolina, 2019 Every severe thunderstorm warning in 2019

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.