Alert archive / South Carolina / Special Weather Statements in 2020

Special Weather Statement, NWS Wilmington, NC

May 22, 2020Williamsburg County, South Carolina

NWS Wilmington, NC issued this special weather statement at May 22, 2020, 9:21 PM EDT for Williamsburg County, South Carolina. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 22, 2020, 9:21 PM EDT (01:21 UTC)
Expired: May 22, 2020, 10:00 PM EDT
In force: 39 min
Issued by: NWS Wilmington, NC

County Williamsburg County, SC

The radar

The Columbia radar (KCAE), 124 km from the middle of the area, began a volume at 01:23 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 00:00Z, 1.4 hours before the alert went out and 103 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: 293 J/kg
Mixed-layer CIN: -135 J/kg
Mixed-layer LCL: 1144 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 73 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at May 22, 7:16 PM EDT, 2 hours 5 minutes earlier.

Area forecast discussion, May 22, 7:16 PM EDT, 2 hours 5 minutes before

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Hazardous weather outlook, May 22, 7:28 PM EDT, 1 hour 53 minutes before

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In the hours before

Local storm report, May 22, 6:47 PM EDT, 2 hours 34 minutes before

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Special weather statement, May 22, 6:51 PM EDT, 2 hours 30 minutes before

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Local storm report, May 22, 7:14 PM EDT, 2 hours 7 minutes before

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Special weather statement, May 22, 7:18 PM EDT, 2 hours 3 minutes before

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Special weather statement, May 22, 7:33 PM EDT, 1 hour 48 minutes before

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Local storm report, May 22, 7:49 PM EDT, 1 hour 32 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
May 22, 9:44 PM EDT	River Flood Warning	ILM	Pender	14 days
May 22, 9:55 PM EDT	Special Weather Statement	ILM	Williamsburg	65 min
May 23, 1:45 AM EDT	Special Weather Statement	ILM	Darlington, Florence, Marlboro	45 min
May 23, 10:39 AM EDT	River Flood Warning	ILM	Florence	21 days

Nearby

Special Weather Statements in South Carolina, 2020 Every special weather statement 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.