Alert archive / Georgia / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 123, NWS Charleston, SC

July 15, 2015Liberty County, Long County, McIntosh County, Georgia

NWS Charleston, SC issued this severe thunderstorm warning at Jul 15, 2015, 6:20 PM EDT for Liberty County, Long County, McIntosh County, Georgia. It was in force for 55 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 15, 2015, 6:20 PM EDT (22:20 UTC)
Expired: Jul 15, 2015, 7:15 PM EDT
In force: 55 min
Issued by: NWS Charleston, SC
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Liberty County, GA, Long County, GA, McIntosh County, GA

The radar

The Charleston,SC radar (KCLX), 118 km from the middle of the area, began a volume at 22:23 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, 10.3 hours before the alert went out and 197 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: 164 J/kg
Mixed-layer CIN: -162 J/kg
Mixed-layer LCL: 1227 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -82 m²/s²
0-3 km storm-relative helicity: -67 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 15, 6:17 PM EDT, 3 minutes earlier.

Area forecast discussion, Jul 15, 6:17 PM EDT, 3 minutes before

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Hazardous weather outlook, Jul 15, 4:48 AM EDT, 13 hours 32 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHARLESTON SC
448 AM EDT WED JUL 15 2015

AMZ330-350-352-354-374-GAZ087-088-099>101-114>119-137>141-SCZ040-
042>045-047>052-160900-
CHARLESTON HARBOR-
WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20 NM-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM...INCLUDING
GRAYS REEF NATIONAL MARINE SANCTUARY-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-JENKINS-SCREVEN-CANDLER-BULLOCH-EFFINGHAM-TATTNALL-EVANS-
INLAND BRYAN-COASTAL BRYAN-INLAND CHATHAM-COASTAL CHATHAM-LONG-
INLAND LIBERTY-COASTAL LIBERTY-INLAND MCINTOSH-COASTAL MCINTOSH-
ALLENDALE-HAMPTON-INLAND COLLETON-DORCHESTER-INLAND BERKELEY-
INLAND JASPER-BEAUFORT-COASTAL COLLETON-CHARLESTON-COASTAL JASPER-
TIDAL BERKELEY-
448 AM EDT WED JUL 15 2015

...A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL
WATERS...SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

SEVERE WEATHER...ISOLATED TO SCATTERED THUNDERSTORMS SHOULD DEVELOP
AHEAD OF AN APPROACHING COLD FRONT THIS AFTERNOON. SOME OF THESE
STORMS COULD BECOME SEVERE...WITH DAMAGING WINDS AND LARGE HAIL THE
PRIMARY CONCERNS. THE THREAT OF SEVERE WEATHER SHOULD BE GREATEST
BETWEEN 2 PM AND 9 PM.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

PLEASE RELAY ANY REPORTS OF HAZARDOUS WEATHER INCLUDING...BUT NOT
LIMITED TO LARGE HAIL...DAMAGING WINDS...AND FLOODING TO THE
NATIONAL WEATHER SERVICE IN CHARLESTON AT 1-888-383-2024.

In the hours before

Special weather statement, Jul 15, 5:34 PM EDT, 46 minutes before

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Special weather statement, Jul 15, 5:36 PM EDT, 44 minutes before

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Special weather statement, Jul 15, 5:38 PM EDT, 42 minutes before

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Local storm report, Jul 15, 5:45 PM EDT, 35 minutes before

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Special weather statement, Jul 15, 5:56 PM EDT, 24 minutes before

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Special weather statement, Jul 15, 6:07 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 15, 9:55 AM EDT	Special Marine Warning	CHS		65 min
Jul 15, 4:27 PM EDT	Special Marine Warning	CHS		93 min
Jul 15, 4:49 PM EDT	Special Weather Statement	CHS	Allendale, Hampton	26 min
Jul 15, 4:51 PM EDT	Severe Thunderstorm Warning	CHS	Jasper	28 min
Jul 15, 5:14 PM EDT	Special Marine Warning	CHS		61 min
Jul 15, 6:30 PM EDT	Special Marine Warning	CHS		2 hr
Jul 15, 7:53 PM EDT	Special Marine Warning	CHS		2 hr
Jul 15, 3:07 PM EDT	Special Weather Statement	CHS	Effingham	23 min
Jul 15, 3:52 PM EDT	Special Weather Statement	CHS	Effingham	38 min
Jul 15, 4:10 PM EDT	Special Weather Statement	CHS	Bulloch	35 min
Jul 15, 4:37 PM EDT	Special Weather Statement	CHS	Effingham	23 min
Jul 15, 4:38 PM EDT	Special Weather Statement	CHS	Effingham	37 min
Jul 15, 4:44 PM EDT	Special Weather Statement	CHS	Chatham	31 min
Jul 15, 5:07 PM EDT	Special Weather Statement	CHS	Bulloch	23 min
Jul 15, 5:13 PM EDT	Severe Thunderstorm Warning	CHS	Bulloch	26 min
Jul 15, 5:27 PM EDT	Special Weather Statement	CHS	Tattnall	33 min
Jul 15, 5:34 PM EDT	Special Weather Statement	CHS	Chatham	26 min
Jul 15, 5:36 PM EDT	Special Weather Statement	CHS	Bryan	24 min
Jul 15, 5:38 PM EDT	Special Weather Statement	CHS	Bryan	37 min
Jul 15, 5:52 PM EDT	Areal Flood Advisory	CHS	Bryan, Chatham	53 min
Jul 15, 5:56 PM EDT	Special Weather Statement	CHS	Long	34 min
Jul 15, 6:07 PM EDT	Special Weather Statement	CHS	Liberty	23 min
Jul 15, 6:16 PM EDT	Severe Thunderstorm Warning	CHS	Bryan, Chatham	59 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2015 Every severe thunderstorm warning in 2015

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.