Alert archive / Georgia / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 27, NWS Charleston, SC

June 4, 2010Evans County, Tattnall County, Georgia

NWS Charleston, SC issued this severe thunderstorm warning at Jun 4, 2010, 7:52 PM EDT for Evans County, Tattnall County, Georgia. It was in force for 53 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: Jun 4, 2010, 7:52 PM EDT (23:52 UTC)
Expired: Jun 4, 2010, 8:45 PM EDT
In force: 53 min
Issued by: NWS Charleston, SC
Area: Storm-based polygon

Counties Evans County, GA, Tattnall County, GA

The radar

The Charleston,SC radar (KCLX), 107 km from the middle of the area, began a volume at 23:56 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 11.9 hours before the alert went out and 275 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: 1304 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 514 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 28 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jun 4, 7:26 PM EDT, 26 minutes earlier.

Area forecast discussion, Jun 4, 7:26 PM EDT, 26 minutes before

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Hazardous weather outlook, Jun 4, 5:50 PM EDT, 2 hours 2 minutes before

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In the hours before

Local storm report, Jun 4, 3:30 PM EDT, 4 hours 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
330 PM EDT FRI JUN 04 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0300 PM     HEAVY RAIN       BLUFFTON                32.24N 80.86W
06/04/2010  M2.33 INCH       BEAUFORT           SC   BROADCAST MEDIA

            2.33 INCHES OF RAIN HAS FALLEN NEAR THE BLUFFTON AREA.
            REPORT RELAYED BY A MEMBER OF THE SAVANNAH MEDIA.

&&

Special weather statement, Jun 4, 3:38 PM EDT, 4 hours 14 minutes before

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Special weather statement, Jun 4, 3:59 PM EDT, 3 hours 53 minutes before

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Special weather statement, Jun 4, 4:47 PM EDT, 3 hours 5 minutes before

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Local storm report, Jun 4, 6:15 PM EDT, 1 hour 37 minutes before

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Special weather statement, Jun 4, 7:23 PM EDT, 29 minutes before

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The office that day

Everything else NWS Charleston, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 4, 3:38 PM EDT	Special Weather Statement	CHS	Chatham	37 min
Jun 4, 3:59 PM EDT	Special Weather Statement	CHS	Screven	31 min
Jun 4, 4:47 PM EDT	Special Weather Statement	CHS	Screven	28 min
Jun 4, 5:15 PM EDT	Severe Thunderstorm Warning	CHS	Screven	27 min
Jun 4, 2:13 PM EDT	Special Weather Statement	CHS	Beaufort	32 min
Jun 4, 2:45 PM EDT	Areal Flood Advisory	CHS	Beaufort	40 min
Jun 4, 3:24 PM EDT	Special Weather Statement	CHS	Charleston	36 min
Jun 4, 3:45 PM EDT	Areal Flood Advisory	CHS	Berkeley, Charleston	45 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2010 Every severe thunderstorm warning in 2010

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.