Alert archive / Georgia / Special Weather Statements in 2020

Special Weather Statement, NWS Charleston, SC

August 9, 2020McIntosh County, Georgia

NWS Charleston, SC issued this special weather statement at Aug 9, 2020, 6:58 PM EDT for McIntosh County, Georgia. It was in force for 32 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 9, 2020, 6:58 PM EDT (22:58 UTC)
Expired: Aug 9, 2020, 7:30 PM EDT
In force: 32 min
Issued by: NWS Charleston, SC

County McIntosh County, GA

The radar

The Jacksonville radar (KJAX), 99 km from the middle of the area, began a volume at 22:58 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

Jacksonville, FL (KJAX), launched 12:00Z, 11.0 hours before the alert went out and 97 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: 1280 J/kg
Mixed-layer CIN: -58 J/kg
Mixed-layer LCL: 929 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 22 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 9, 4:05 PM EDT, 2 hours 53 minutes earlier.

Area forecast discussion, Aug 9, 4:05 PM EDT, 2 hours 53 minutes before

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Hazardous weather outlook, Aug 9, 3:24 AM EDT, 15 hours 34 minutes before

Hazardous Weather Outlook
National Weather Service Charleston SC
324 AM EDT Sun Aug 9 2020

AMZ330-350-352-354-374-GAZ087-088-099>101-114>119-137>141-SCZ040-
042>045-047>052-100730-
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-
324 AM EDT Sun Aug 9 2020

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...Monday through Saturday.

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 9, 5:12 PM EDT, 1 hour 46 minutes before

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Local storm report, Aug 9, 5:28 PM EDT, 1 hour 30 minutes before

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Special weather statement, Aug 9, 5:48 PM EDT, 1 hour 10 minutes before

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Special weather statement, Aug 9, 6:32 PM EDT, 26 minutes before

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Local storm report, Aug 9, 6:51 PM EDT, 7 minutes before

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Special weather statement, Aug 9, 6:58 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 9, 2:47 PM EDT	Special Weather Statement	CHS	Bryan	28 min
Aug 9, 2:51 PM EDT	Special Weather Statement	CHS	Effingham	24 min
Aug 9, 3:15 PM EDT	Special Weather Statement	CHS	Chatham	30 min
Aug 9, 3:47 PM EDT	Special Weather Statement	CHS	Chatham	28 min
Aug 9, 5:12 PM EDT	Special Weather Statement	CHS	McIntosh	33 min
Aug 9, 5:48 PM EDT	Special Weather Statement	CHS	McIntosh	42 min
Aug 9, 6:32 PM EDT	Special Weather Statement	CHS	McIntosh	28 min

Nearby

Special Weather Statements in Georgia, 2020 Every special weather statement in 2020

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.