Alert archive / Georgia / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 110, NWS Charleston, SC

July 12, 20105 counties in Georgia

NWS Charleston, SC issued this severe thunderstorm warning at Jul 12, 2010, 6:57 PM EDT for 5 counties in Georgia. It was in force for 63 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: Jul 12, 2010, 6:57 PM EDT (22:57 UTC)
Expired: Jul 12, 2010, 8:00 PM EDT
In force: 63 min
Issued by: NWS Charleston, SC
Area: Storm-based polygon

Counties Bryan County, GA, Chatham County, GA, Liberty County, GA, Long County, GA, McIntosh County, GA

The radar

The Charleston,SC radar (KCLX), 101 km from the middle of the area, began a volume at 22:59 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 12, 1:14 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 11.0 hours before the alert went out and 181 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: 2479 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 525 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 48 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jul 12, 6:32 PM EDT, 25 minutes earlier.

Area forecast discussion, Jul 12, 6:32 PM EDT, 25 minutes before

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Hazardous weather outlook, Jul 12, 6:08 PM EDT, 49 minutes before

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In the hours before

Local storm report, Jul 12, 5:46 PM EDT, 1 hour 11 minutes before

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Local storm report, Jul 12, 6:12 PM EDT, 45 minutes before

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Local storm report, Jul 12, 6:18 PM EDT, 39 minutes before

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Local storm report, Jul 12, 6:21 PM EDT, 36 minutes before

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Local storm report, Jul 12, 6:23 PM EDT, 34 minutes before

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Local storm report, Jul 12, 6:44 PM EDT, 13 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
Jul 12, 3:09 AM EDT	Heat Advisory	CHS	Bulloch, Candler, Effingham, Evans, Jenkins, Long and 2 more	15 hr
Jul 12, 2:06 PM EDT	Special Weather Statement	CHS	Candler, Jenkins	39 min
Jul 12, 2:32 PM EDT	Severe Thunderstorm Warning	CHS	Jenkins, Screven	58 min
Jul 12, 2:43 PM EDT	Special Weather Statement	CHS	Bulloch	32 min
Jul 12, 3:16 PM EDT	Severe Thunderstorm Warning	CHS	Screven	59 min
Jul 12, 3:26 PM EDT	Special Weather Statement	CHS	Bulloch, Evans	34 min
Jul 12, 3:55 PM EDT	Severe Thunderstorm Warning	CHS	Bryan, Bulloch, Chatham, Effingham, Screven	65 min
Jul 12, 4:05 PM EDT	Severe Thunderstorm Warning	CHS	Bryan, Bulloch, Chatham, Effingham	55 min
Jul 12, 4:56 PM EDT	Severe Thunderstorm Warning	CHS	Bryan, Chatham, Effingham, Liberty	64 min
Jul 12, 4:59 PM EDT	Special Weather Statement	CHS	McIntosh	31 min
Jul 12, 5:09 PM EDT	Special Marine Warning	CHS		2 hr
Jul 12, 5:34 PM EDT	Special Weather Statement	CHS	Liberty	26 min
Jul 12, 5:46 PM EDT	Special Marine Warning	CHS		73 min
Jul 12, 5:56 PM EDT	Severe Thunderstorm Warning	CHS	Bryan, Chatham, Liberty, Long, McIntosh	64 min
Jul 12, 7:00 PM EDT	Areal Flood Advisory	CHS	Bryan, Chatham, Liberty, Long, McIntosh	60 min
Jul 12, 7:10 PM EDT	Special Marine Warning	CHS		2 hr
Jul 12, 3:01 PM EDT	Coastal Flood Advisory	CHS		7 hr
Jul 12, 4:18 PM EDT	Severe Thunderstorm Warning	CHS	Colleton, Dorchester	57 min
Jul 12, 4:32 PM EDT	Severe Thunderstorm Warning	CHS	Jasper	58 min
Jul 12, 5:02 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley, Colleton, Dorchester, Hampton	58 min
Jul 12, 5:07 PM EDT	Severe Thunderstorm Warning	CHS	Beaufort, Charleston, Colleton, Dorchester, Jasper	53 min
Jul 12, 5:56 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley	64 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.