Alert archive / Georgia / Special Weather Statements in 2019

Special Weather Statement, NWS Charleston, SC

August 7, 2019Chatham County, Georgia

NWS Charleston, SC issued this special weather statement at Aug 7, 2019, 7:01 PM EDT for Chatham County, Georgia. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 7, 2019, 7:01 PM EDT (23:01 UTC)
Expired: Aug 7, 2019, 7:30 PM EDT
In force: 29 min
Issued by: NWS Charleston, SC

County Chatham County, GA

The radar

The Charleston,SC radar (KCLX), 67 km from the middle of the area, began a volume at 23:01 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, 11.0 hours before the alert went out and 122 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: 525 J/kg
Mixed-layer CIN: -84 J/kg
Mixed-layer LCL: 1269 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 7, 6:58 PM EDT, 3 minutes earlier.

Area forecast discussion, Aug 7, 6:58 PM EDT, 3 minutes before

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Hazardous weather outlook, Aug 7, 4:38 AM EDT, 14 hours 23 minutes before

Hazardous Weather Outlook
National Weather Service Charleston SC
438 AM EDT Wed Aug 7 2019

AMZ330-350-352-354-374-GAZ087-088-099>101-114>119-137>141-SCZ040-
042>045-047>052-080845-
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 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-
438 AM EDT Wed Aug 7 2019

This Hazardous Weather Outlook is for Atlantic coastal waters,
southeast Georgia and southeast South Carolina.

.DAY ONE...Today and tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter assistance is not anticipated at this time.

In the hours before

Special weather statement, Aug 7, 5:30 PM EDT, 1 hour 31 minutes before

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Local storm report, Aug 7, 5:33 PM EDT, 1 hour 28 minutes before

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Local storm report, Aug 7, 6:01 PM EDT, 1 hour before

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Local storm report, Aug 7, 6:13 PM EDT, 48 minutes before

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Special weather statement, Aug 7, 6:22 PM EDT, 39 minutes before

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Special weather statement, Aug 7, 7:01 PM EDT, 0 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
Aug 7, 5:04 PM EDT	Special Weather Statement	CHS	Charleston	41 min
Aug 7, 5:30 PM EDT	Special Weather Statement	CHS	Beaufort	30 min
Aug 7, 5:46 PM EDT	Severe Thunderstorm Warning	CHS	Beaufort	44 min
Aug 7, 7:10 PM EDT	Special Marine Warning	CHS		65 min
Aug 7, 4:49 PM EDT	Special Weather Statement	CHS	Bulloch	41 min
Aug 7, 6:22 PM EDT	Special Weather Statement	CHS	Chatham	38 min
Aug 7, 7:19 PM EDT	Special Weather Statement	CHS	Chatham	26 min

Nearby

Special Weather Statements in Georgia, 2019 Every special weather statement in 2019

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.