Alert archive / South Carolina / Special Weather Statements in 2021
Special Weather Statement, NWS Charleston, SC
NWS Charleston, SC issued this special weather statement at Sep 22, 2021, 4:48 PM EDT for Allendale County, South Carolina. It was in force for 27 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
- Sep 22, 2021, 4:48 PM EDT (20:48 UTC)
- Expired
- Sep 22, 2021, 5:15 PM EDT
- In force
- 27 min
- Issued by
- NWS Charleston, SC
- Hail
- 0.00 in
- Wind
- 55
County Allendale County, SC
The radar
The Charleston,SC radar (KCLX), 41 km from the middle of the area, began a volume at 20:51 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, 8.8 hours before the alert went out and 110 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
- 773 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 721 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -17 m²/s²
- 0-3 km storm-relative helicity
- -1 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 Sep 22, 3:45 PM EDT, 1 hour 3 minutes earlier.
Area forecast discussion, Sep 22, 3:45 PM EDT, 1 hour 3 minutes before
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</html>Hazardous weather outlook, Sep 22, 3:22 AM EDT, 13 hours 26 minutes before
Hazardous Weather Outlook National Weather Service Charleston SC 322 AM EDT Wed Sep 22 2021 AMZ330-350-352-354-374-GAZ087-088-099>101-114>119-137>141-SCZ040- 042>045-047>052-230730- 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- 322 AM EDT Wed Sep 22 2021 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. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter assistance is not anticipated at this time.
In the hours before
Special weather statement, Sep 22, 4:48 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 |
|---|---|---|---|---|
| Sep 22, 5:27 PM EDT | Special Weather Statement | CHS | Jasper | 33 min |
| Sep 22, 5:41 PM EDT | Special Weather Statement | CHS | Dorchester | 34 min |
| Sep 22, 6:14 PM EDT | Special Weather Statement | CHS | Dorchester | 31 min |
| Sep 22, 6:46 PM EDT | Special Weather Statement | CHS | Colleton, Dorchester | 44 min |
| Sep 22, 6:55 PM EDT | Areal Flood Advisory | CHS | Beaufort, Jasper | 64 min |
| Sep 22, 7:13 PM EDT | Areal Flood Advisory | CHS | Berkeley, Dorchester | 62 min |
| Sep 22, 7:36 PM EDT | Special Weather Statement | CHS | Colleton | 24 min |
| Sep 22, 5:02 PM EDT | Special Weather Statement | CHS | Effingham | 28 min |
| Sep 22, 6:05 PM EDT | Special Weather Statement | CHS | Bryan, Liberty | 40 min |
| Sep 22, 6:33 PM EDT | Special Weather Statement | CHS | McIntosh | 12 min |
| Sep 22, 6:44 PM EDT | Special Weather Statement | CHS | Chatham, Liberty, McIntosh | 46 min |
| Sep 22, 7:29 PM EDT | Special Weather Statement | CHS | McIntosh | 46 min |
Nearby
Special Weather Statements in South Carolina, 2021Every special weather statement in 2021
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.