Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 62, NWS Charleston, SC

May 23, 2017Bryan County, Chatham County, Georgia

NWS Charleston, SC issued this severe thunderstorm warning at May 23, 2017, 9:05 PM EDT for Bryan County, Chatham County, Georgia. It was in force for 40 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: May 23, 2017, 9:05 PM EDT (01:05 UTC)
Expired: May 23, 2017, 9:45 PM EDT
In force: 40 min
Issued by: NWS Charleston, SC
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Bryan County, GA, Chatham County, GA

The radar

The Charleston,SC radar (KCLX), 77 km from the middle of the area, began a volume at 01:07 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
May 23, 2:45 PM EDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 1.1 hours before the alert went out and 156 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: 72 J/kg
Mixed-layer CIN: -140 J/kg
Mixed-layer LCL: 756 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 205 m²/s²
0-3 km storm-relative helicity: 218 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 May 23, 8:18 PM EDT, 47 minutes earlier.

Area forecast discussion, May 23, 8:18 PM EDT, 47 minutes before

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Hazardous weather outlook, May 23, 7:56 PM EDT, 1 hour 9 minutes before

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In the hours before

Local storm report, May 23, 8:00 PM EDT, 1 hour 5 minutes before

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Local storm report, May 23, 8:04 PM EDT, 1 hour 1 minute before

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Local storm report, May 23, 8:23 PM EDT, 42 minutes before

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Special weather statement, May 23, 8:39 PM EDT, 26 minutes before

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Special weather statement, May 23, 8:53 PM EDT, 12 minutes before

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Special weather statement, May 23, 8:57 PM EDT, 8 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
May 23, 8:39 PM EDT	Special Marine Warning	CHS		96 min
May 23, 8:53 PM EDT	Special Weather Statement	CHS	Charleston	37 min
May 23, 8:59 PM EDT	Special Marine Warning	CHS		91 min
May 23, 9:44 PM EDT	Special Marine Warning	CHS		61 min
May 23, 10:41 PM EDT	Special Marine Warning	CHS		2 hr
May 24, 2:28 AM EDT	Special Weather Statement	CHS	Bamberg	32 min
May 24, 12:41 PM EDT	Special Marine Warning	CHS		2 hr
May 24, 1:09 PM EDT	Special Marine Warning	CHS		2 hr
May 24, 1:44 PM EDT	Special Weather Statement	CHS	Allendale	31 min
May 24, 2:10 PM EDT	Special Marine Warning	CHS		2 hr
May 24, 2:26 PM EDT	Special Marine Warning	CHS		2 hr
May 24, 2:30 PM EDT	Special Weather Statement	CHS	Berkeley, Dorchester	45 min
May 24, 2:43 PM EDT	Special Marine Warning	CHS		2 hr
May 24, 3:14 PM EDT	Special Marine Warning	CHS		2 hr
May 24, 4:15 PM EDT	Special Marine Warning	CHS		30 min
May 24, 4:31 PM EDT	Special Marine Warning	CHS		59 min
May 23, 8:39 PM EDT	Special Weather Statement	CHS	Liberty	36 min
May 23, 8:57 PM EDT	Special Weather Statement	CHS	Chatham	33 min
May 23, 9:07 PM EDT	Tornado Warning	CHS	Bryan, Chatham	38 min
May 24, 5:48 PM EDT	Special Weather Statement	CHS	Jenkins	27 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2017 Every severe thunderstorm warning in 2017

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.