Alert archive / Georgia / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 83, NWS Charleston, SC

June 27, 2010Bryan County, Chatham County, Effingham County, Georgia

NWS Charleston, SC issued this severe thunderstorm warning at Jun 27, 2010, 8:45 PM EDT for Bryan County, Chatham County, Effingham County, Georgia. It was in force for 37 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 27, 2010, 8:45 PM EDT (00:45 UTC)
Expired: Jun 27, 2010, 9:22 PM EDT
In force: 37 min
Issued by: NWS Charleston, SC
Area: Storm-based polygon

Counties Bryan County, GA, Chatham County, GA, Effingham County, GA

The radar

The Charleston,SC radar (KCLX), 64 km from the middle of the area, began a volume at 00:47 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, 0.8 hours before the alert went out and 149 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: 1069 J/kg
Mixed-layer CIN: -139 J/kg
Mixed-layer LCL: 993 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 72 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 Jun 27, 8:13 PM EDT, 32 minutes earlier.

Area forecast discussion, Jun 27, 8:13 PM EDT, 32 minutes before

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Hazardous weather outlook, Jun 27, 8:14 PM EDT, 31 minutes before

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In the hours before

Special weather statement, Jun 27, 8:07 PM EDT, 38 minutes before

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Local storm report, Jun 27, 8:11 PM EDT, 34 minutes before

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Local storm report, Jun 27, 8:18 PM EDT, 27 minutes before

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Local storm report, Jun 27, 8:23 PM EDT, 22 minutes before

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Local storm report, Jun 27, 8:38 PM EDT, 7 minutes before

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Special weather statement, Jun 27, 8:39 PM EDT, 6 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 27, 8:01 PM EDT	Flash Flood Warning	CHS	Chatham	2 hr
Jun 27, 8:07 PM EDT	Special Weather Statement	CHS	Effingham	38 min
Jun 27, 8:12 PM EDT	Severe Thunderstorm Warning	CHS	Bulloch, Effingham	63 min
Jun 27, 8:39 PM EDT	Special Weather Statement	CHS	Bryan, Chatham, Liberty, Long, McIntosh	51 min
Jun 27, 8:52 PM EDT	Special Marine Warning	CHS		113 min
Jun 27, 11:08 PM EDT	Special Weather Statement	CHS	Jenkins	52 min
Jun 28, 6:15 PM EDT	Special Weather Statement	CHS	Long	45 min
Jun 28, 6:30 PM EDT	Special Weather Statement	CHS	Screven	45 min
Jun 28, 6:39 PM EDT	Special Weather Statement	CHS	McIntosh	51 min
Jun 28, 7:03 PM EDT	Special Weather Statement	CHS	Evans, Tattnall	42 min
Jun 28, 7:32 PM EDT	Special Weather Statement	CHS	Effingham	43 min
Jun 28, 7:44 PM EDT	Special Weather Statement	CHS	Evans	61 min
Jun 28, 5:29 PM EDT	Special Weather Statement	CHS	Allendale	31 min
Jun 28, 5:57 PM EDT	Special Weather Statement	CHS	Berkeley	48 min
Jun 28, 6:19 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley	56 min
Jun 28, 6:55 PM EDT	Special Weather Statement	CHS	Charleston	35 min
Jun 28, 7:02 PM EDT	Special Weather Statement	CHS	Charleston	43 min
Jun 28, 7:43 PM EDT	Special Weather Statement	CHS	Charleston	47 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.