Alert archive / South Carolina / Special Weather Statements in 2017

Special Weather Statement, NWS Wilmington, NC

May 30, 2017Horry County, South Carolina

NWS Wilmington, NC issued this special weather statement at May 30, 2017, 3:51 AM EDT for Horry County, South Carolina. It was in force for 24 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 30, 2017, 3:51 AM EDT (07:51 UTC)
Expired: May 30, 2017, 4:15 AM EDT
In force: 24 min
Issued by: NWS Wilmington, NC

County Horry County, SC

The radar

The Wilmington radar (KLTX), 51 km from the middle of the area, began a volume at 07:50 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 00:00Z, 7.9 hours before the alert went out and 216 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: 172 J/kg
Mixed-layer CIN: -144 J/kg
Mixed-layer LCL: 1476 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: -11 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

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 30, 3:39 AM EDT, 12 minutes earlier.

Area forecast discussion, May 30, 3:39 AM EDT, 12 minutes before

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Hazardous weather outlook, May 30, 3:40 AM EDT, 11 minutes before

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In the hours before

Special weather statement, May 29, 11:57 PM EDT, 3 hours 54 minutes before

Special Weather Statement
National Weather Service Wilmington NC
1157 PM EDT MON MAY 29 2017

NCZ105-300500-
Inland Pender NC-
1157 PM EDT MON MAY 29 2017

...STRONG THUNDERSTORM TO AFFECT NORTHERN PENDER COUNTY...

At 1156 PM EDT, Doppler radar was tracking a strong thunderstorm near
Harrells, or 13 miles southwest of Wallace, moving east at 40 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
White Stocking, Penderlea, Maple Hill, Murray Town, Willard,
and Watha.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3456 7825 3472 7811 3473 7802 3471 7798
      3472 7768 3453 7760
TIME...MOT...LOC 0356Z 265DEG 34KT 3466 7821

TRA

Special weather statement, May 30, 1:12 AM EDT, 2 hours 39 minutes before

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Special weather statement, May 30, 3:02 AM EDT, 49 minutes before

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Local storm report, May 30, 3:11 AM EDT, 40 minutes before

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Special weather statement, May 30, 3:31 AM EDT, 20 minutes before

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Special weather statement, May 30, 3:51 AM EDT, 0 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 29, 8:54 PM EDT	Severe Thunderstorm Warning	ILM	Florence, Williamsburg	66 min
May 29, 9:35 PM EDT	Severe Thunderstorm Warning	ILM	Williamsburg	55 min
May 29, 9:59 PM EDT	Severe Thunderstorm Warning	ILM	Florence, Georgetown, Horry, Marion, Williamsburg	61 min
May 29, 10:28 PM EDT	Severe Thunderstorm Warning	ILM	Florence, Georgetown, Horry, Marion, Williamsburg	32 min
May 29, 10:59 PM EDT	Special Weather Statement	ILM	Horry	46 min
May 29, 11:11 PM EDT	Special Marine Warning	ILM		94 min
May 29, 11:41 PM EDT	Special Weather Statement	ILM	Horry	34 min
May 30, 3:33 AM EDT	Special Marine Warning	ILM		57 min
May 29, 10:18 PM EDT	Special Weather Statement	ILM	Robeson	57 min
May 29, 11:01 PM EDT	Special Weather Statement	ILM	Bladen	59 min
May 29, 11:57 PM EDT	Special Weather Statement	ILM	Pender	63 min
May 30, 1:12 AM EDT	Special Weather Statement	ILM	Columbus	33 min
May 30, 3:02 AM EDT	Special Weather Statement	ILM	New Hanover	43 min
May 30, 3:31 AM EDT	Special Weather Statement	ILM	New Hanover	14 min
May 30, 3:53 AM EDT	Special Weather Statement	ILM	Columbus	37 min
May 30, 4:04 AM EDT	Special Weather Statement	ILM	New Hanover	26 min
May 30, 4:16 AM EDT	Special Weather Statement	ILM	Pender	44 min
May 30, 4:35 AM EDT	Special Weather Statement	ILM	Pender	25 min

Nearby

Special Weather Statements in South Carolina, 2017 Every special weather statement in 2017

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.