Alert archive / South Carolina / Special Weather Statements in 2020
Special Weather Statement, NWS Charleston, SC
NWS Charleston, SC issued this special weather statement at Aug 5, 2020, 5:15 PM EDT for Allendale County, South Carolina. It was in force for 30 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 5, 2020, 5:15 PM EDT (21:15 UTC)
- Expired
- Aug 5, 2020, 5:45 PM EDT
- In force
- 30 min
- Issued by
- NWS Charleston, SC
County Allendale County, SC
The radar
The Charleston,SC radar (KCLX), 60 km from the middle of the area, began a volume at 21:19 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, 9.3 hours before the alert went out and 142 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.
- Mixed-layer CAPE
- 1354 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 951 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>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 5, 3:52 PM EDT, 1 hour 23 minutes earlier.
Area forecast discussion, Aug 5, 3:52 PM EDT, 1 hour 23 minutes before
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</html>Hazardous weather outlook, Aug 5, 3:37 AM EDT, 13 hours 38 minutes before
Hazardous Weather Outlook National Weather Service Charleston SC 337 AM EDT Wed Aug 5 2020 AMZ330-350-352-354-370-372-374-GAZ087-088-099>101-114>119-137>141- SCZ040-042>045-047>052-060900- 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 South Santee River SC to Edisto Beach SC extending from 20 to 40 NM- Waters from Edisto Beach SC to Savannah GA extending from 20 to 40 NM-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- 337 AM EDT Wed Aug 5 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...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
Local storm report, Aug 5, 2:31 PM EDT, 2 hours 44 minutes before
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</html>Local storm report, Aug 5, 2:34 PM EDT, 2 hours 41 minutes before
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</html>Local storm report, Aug 5, 2:54 PM EDT, 2 hours 21 minutes before
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</html>Local storm report, Aug 5, 4:09 PM EDT, 1 hour 6 minutes before
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</html>Special weather statement, Aug 5, 5:00 PM EDT, 15 minutes before
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</html>Special weather statement, Aug 5, 5:15 PM EDT, 0 minutes before
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</html>The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 12:39 PM EDT | Special Weather Statement | CHS | Berkeley | 51 min |
| Aug 5, 1:04 PM EDT | Areal Flood Advisory | CHS | Berkeley, Charleston, Dorchester | 116 min |
| Aug 5, 2:37 PM EDT | Areal Flood Advisory | CHS | Colleton | 113 min |
| Aug 5, 2:43 PM EDT | Special Marine Warning | CHS | 32 min | |
| Aug 5, 5:00 PM EDT | Special Weather Statement | CHS | Allendale | 15 min |
| Aug 5, 5:45 PM EDT | Areal Flood Advisory | CHS | Hampton, Jasper | 2 hr |
| Aug 5, 7:32 PM EDT | Areal Flood Advisory | CHS | Bulloch, Candler, Jenkins, Screven | 97 min |
Nearby
Special Weather Statements in South Carolina, 2020Every 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.