Alert archive / South Carolina / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 116, NWS Wilmington, NC

July 20, 2016Darlington County, South Carolina

NWS Wilmington, NC issued this severe thunderstorm warning at Jul 20, 2016, 4:21 PM EDT for Darlington County, South Carolina. It was in force for 38 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 20, 2016, 4:21 PM EDT (20:21 UTC)
Expired: Jul 20, 2016, 4:59 PM EDT
In force: 38 min
Issued by: NWS Wilmington, NC
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Darlington County, SC

The radar

The Columbia radar (KCAE), 115 km from the middle of the area, began a volume at 20:20 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, 8.4 hours before the alert went out and 159 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: 915 J/kg
Mixed-layer CIN: -136 J/kg
Mixed-layer LCL: 891 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 67 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

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 Wilmington, NC wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 20, 2:33 PM EDT, 1 hour 48 minutes earlier.

Area forecast discussion, Jul 20, 2:33 PM EDT, 1 hour 48 minutes before

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Hazardous weather outlook, Jul 20, 3:49 AM EDT, 12 hours 32 minutes before

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In the hours before

Local storm report, Jul 20, 11:20 AM EDT, 5 hours 1 minute before

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Local storm report, Jul 20, 11:27 AM EDT, 4 hours 54 minutes before

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Local storm report, Jul 20, 12:42 PM EDT, 3 hours 39 minutes before

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Special weather statement, Jul 20, 3:28 PM EDT, 53 minutes before

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Special weather statement, Jul 20, 4:19 PM EDT, 2 minutes before

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The office that day

Everything else NWS Wilmington, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 19, 8:15 PM EDT	Special Weather Statement	ILM	Bladen	60 min
Jul 19, 8:39 PM EDT	Special Marine Warning	ILM		96 min
Jul 19, 8:56 PM EDT	Severe Thunderstorm Warning	ILM	Bladen, Columbus, Robeson	64 min
Jul 19, 9:20 PM EDT	Special Marine Warning	ILM		55 min
Jul 19, 9:32 PM EDT	Areal Flood Warning	ILM	Bladen, Robeson	118 min
Jul 19, 10:07 PM EDT	Special Weather Statement	ILM	Robeson	38 min
Jul 20, 6:30 PM EDT	Special Weather Statement	ILM	Brunswick	45 min
Jul 19, 10:00 PM EDT	Areal Flood Advisory	ILM	Georgetown, Horry	2 hr
Jul 19, 10:49 PM EDT	Special Weather Statement	ILM	Williamsburg	41 min
Jul 19, 11:29 PM EDT	Special Weather Statement	ILM	Dillon, Florence, Marion	46 min
Jul 19, 11:34 PM EDT	Areal Flood Advisory	ILM	Williamsburg	116 min
Jul 20, 12:17 AM EDT	Special Weather Statement	ILM	Florence, Marion	58 min
Jul 20, 12:57 AM EDT	Areal Flood Advisory	ILM	Darlington, Dillon, Florence, Marion, Marlboro	3 hr
Jul 20, 3:28 PM EDT	Special Weather Statement	ILM	Marlboro	32 min
Jul 20, 4:19 PM EDT	Special Weather Statement	ILM	Darlington	41 min
Jul 20, 4:41 PM EDT	Special Weather Statement	ILM	Darlington	34 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2016 Every severe thunderstorm warning in 2016

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.