Alert archive / North Carolina / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 56, NWS Wilmington, NC

July 13, 2020Columbus County, North Carolina; Horry County, South Carolina

NWS Wilmington, NC issued this severe thunderstorm warning at Jul 13, 2020, 3:27 PM EDT for Columbus County, North Carolina; Horry County, South Carolina. It was in force for 33 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 13, 2020, 3:27 PM EDT (19:27 UTC)
Expired
Jul 13, 2020, 4:00 PM EDT
In force
33 min
Issued by
NWS Wilmington, NC
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Columbus County, NC, Horry County, SC

The radar

The Wilmington radar (KLTX), 37 km from the middle of the area, began a volume at 19:29 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

Newport, NC (KMHX), launched 12:00Z, 7.5 hours before the alert went out and 194 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-pSkew-T log-p diagram, Newport, NC at 12:00Z on 2020-07-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 838 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Newport, NC at 12:00Z on 2020-07-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
838 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
1252 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
41 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 13, 2:48 PM EDTSpecial Weather StatementILMColumbus57 min
Jul 13, 3:00 PM EDTSpecial Weather StatementILMColumbus60 min
Jul 13, 3:37 PM EDTSpecial Weather StatementILMColumbus53 min
Jul 13, 3:57 PM EDTSpecial Weather StatementILMPender63 min
Jul 13, 4:21 PM EDTSpecial Weather StatementILMColumbus39 min
Jul 13, 4:40 PM EDTSpecial Weather StatementILMBladen35 min
Jul 13, 5:13 PM EDTSpecial Weather StatementILMBladen62 min
Jul 13, 1:23 PM EDTSpecial Weather StatementILMDarlington, Marlboro67 min
Jul 13, 2:27 PM EDTSpecial Weather StatementILMDarlington, Marlboro63 min
Jul 13, 2:36 PM EDTSpecial Weather StatementILMMarlboro54 min
Jul 13, 3:31 PM EDTSpecial Weather StatementILMFlorence, Marion59 min
Jul 13, 4:07 PM EDTSpecial Weather StatementILMHorry38 min
Jul 13, 4:18 PM EDTSpecial Weather StatementILMMarion42 min
Jul 13, 4:52 PM EDTSpecial Weather StatementILMHorry23 min
Jul 13, 5:32 PM EDTSpecial Weather StatementILMHorry58 min
Jul 13, 6:39 PM EDTSpecial Weather StatementILMGeorgetown66 min
Jul 13, 7:03 PM EDTSpecial Weather StatementILMGeorgetown57 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2020Severe Thunderstorm Warnings in South Carolina, 2020Every 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.