Alert archive / South Carolina / Heat Advisories in 2011

Heat Advisory 3, NWS Wilmington, NC

June 22, 20115 counties in South Carolina

NWS Wilmington, NC issued this heat advisory at Jun 22, 2011, 3:33 AM EDT for 5 counties in South Carolina. It took effect at Jun 22, 2011, 12:00 PM EDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Jun 22, 2011, 3:33 AM EDT (07:33 UTC)
In effect from: Jun 22, 2011, 12:00 PM EDT
Expired: Jun 22, 2011, 7:00 PM EDT
In force: 7 hr
Issued by: NWS Wilmington, NC

Counties Florence County, SC, Georgetown County, SC, Horry County, SC, Marion County, SC, Williamsburg County, SC

The radar

The Wilmington radar (KLTX), 93 km from the middle of the area, began a volume at 07:35 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, 7.6 hours before the alert went out and 115 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: 1536 J/kg
Mixed-layer CIN: -75 J/kg
Mixed-layer LCL: 1870 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.7

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this heat advisory 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 heat advisory went out at Jun 22, 3:15 AM EDT, 18 minutes earlier.

Area forecast discussion, Jun 22, 3:15 AM EDT, 18 minutes before

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Hazardous weather outlook, Jun 21, 10:11 PM EDT, 5 hours 22 minutes before

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In the hours before

Special weather statement, Jun 21, 10:48 PM EDT, 4 hours 45 minutes before

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Special weather statement, Jun 21, 11:18 PM EDT, 4 hours 15 minutes before

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Special weather statement, Jun 22, 12:22 AM EDT, 3 hours 11 minutes before

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Special weather statement, Jun 22, 1:05 AM EDT, 2 hours 28 minutes before

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Special weather statement, Jun 22, 1:41 AM EDT, 1 hour 52 minutes before

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Special weather statement, Jun 22, 2:26 AM EDT, 1 hour 7 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
Jun 21, 9:18 PM EDT	Special Weather Statement	ILM	Marlboro	27 min
Jun 21, 11:18 PM EDT	Special Weather Statement	ILM	Marlboro	27 min
Jun 21, 11:25 PM EDT	Severe Thunderstorm Warning	ILM	Marlboro	33 min
Jun 21, 11:51 PM EDT	Areal Flood Advisory	ILM	Darlington, Marlboro	114 min
Jun 22, 12:22 AM EDT	Special Weather Statement	ILM	Dillon	68 min
Jun 22, 1:41 AM EDT	Special Weather Statement	ILM	Darlington, Florence	79 min
Jun 22, 2:26 AM EDT	Special Weather Statement	ILM	Dillon, Florence	49 min
Jun 22, 5:27 PM EDT	Special Weather Statement	ILM	Marlboro	48 min
Jun 21, 9:30 PM EDT	Dense Smoke Advisory	ILM	Pender	4 days
Jun 21, 9:45 PM EDT	Special Weather Statement	ILM	Robeson	60 min
Jun 21, 10:48 PM EDT	Special Weather Statement	ILM	Bladen	57 min
Jun 22, 1:05 AM EDT	Special Weather Statement	ILM	Bladen, Columbus, Robeson	85 min
Jun 22, 5:38 PM EDT	Special Weather Statement	ILM	Bladen, Columbus	67 min
Jun 22, 5:58 PM EDT	Severe Thunderstorm Warning	ILM	Bladen, Columbus	43 min
Jun 22, 6:25 PM EDT	Severe Thunderstorm Warning	ILM	Bladen	65 min
Jun 22, 6:57 PM EDT	Special Weather Statement	ILM	Bladen	63 min
Jun 22, 7:22 PM EDT	Severe Thunderstorm Warning	ILM	Bladen, Columbus	53 min

Nearby

Heat Advisories in South Carolina, 2011 Every heat advisory in 2011

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.