Alert archive / South Carolina / Special Weather Statements in 2011

Special Weather Statement, NWS Charleston, SC

June 21, 2011Berkeley County, South Carolina

NWS Charleston, SC issued this special weather statement at Jun 21, 2011, 3:49 PM EDT for Berkeley County, South Carolina. It was in force for 26 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: Jun 21, 2011, 3:49 PM EDT (19:49 UTC)
Expired: Jun 21, 2011, 4:15 PM EDT
In force: 26 min
Issued by: NWS Charleston, SC

County Berkeley County, SC

The radar

The Wilmington radar (KLTX), 144 km from the middle of the area, began a volume at 19:51 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, 7.8 hours before the alert went out and 46 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: 2099 J/kg
Mixed-layer CIN: -127 J/kg
Mixed-layer LCL: 1552 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: -31 m²/s²
0-3 km storm-relative helicity: -10 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Charleston, SC wrote its last area forecast discussion before this special weather statement went out at Jun 20, 7:42 PM EDT, 20 hours 7 minutes earlier.

Area forecast discussion, Jun 20, 7:42 PM EDT, 20 hours 7 minutes before

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Hazardous weather outlook, Jun 20, 4:06 PM EDT, 23 hours 43 minutes before

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Nearby

Special Weather Statements in South Carolina, 2011 Every special weather statement 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.