Alert archive / South Carolina / Lake Wind Advisories in 2021
Lake Wind Advisory 7, NWS Columbia, SC
NWS Columbia, SC issued this lake wind advisory at Jun 28, 2021, 11:34 AM EDT for 16 counties in South Carolina; 5 counties in Georgia. It took effect at Jun 28, 2021, 6:00 PM EDT. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Jun 28, 2021, 11:34 AM EDT (15:34 UTC)
- In effect from
- Jun 28, 2021, 6:00 PM EDT
- Expired
- Jun 29, 2021, 4:00 AM EDT
- In force
- 10 hr
- Issued by
- NWS Columbia, SC
All 21 counties
Burke County, GA, Columbia County, GA, Lincoln County, GA, McDuffie County, GA, Richmond County, GA, Aiken County, SC, Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Clarendon County, SC, Edgefield County, SC, Fairfield County, SC, Kershaw County, SC, Lee County, SC, Lexington County, SC, McCormick County, SC, Newberry County, SC, Orangeburg County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC
The radar
The Columbia radar (KCAE), 34 km from the middle of the area, began a volume at 15:37 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, 3.6 hours before the alert went out and 160 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
- 172 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 729 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 108 m²/s²
- 0-3 km storm-relative helicity
- 143 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
300 WWUS72 KCAE 281534 NPWCAE URGENT - WEATHER MESSAGE National Weather Service Columbia SC 1134 AM EDT Mon Jun 28 2021 SCZ020>022-025>031-035-037-038-041-135>137-290400- /O.NEW.KCAE.LW.Y.0007.210628T2200Z-210629T0800Z/ Newberry-Fairfield-Kershaw-Edgefield-Saluda-Lexington-Richland- Lee-Aiken-Sumter-Barnwell-Calhoun-Clarendon-Bamberg- Northwestern Orangeburg-Central Orangeburg- Southeastern Orangeburg- Including the cities of Newberry, Winnsboro, Winnsboro Mills, Camden, Lugoff, Edgefield, Johnston, Saluda, Ridge Spring, Seven Oaks, West Columbia, Cayce, Lexington, Red Bank, Oak Grove, Columbia, Bishopville, Aiken, North Augusta, Sumter, Barnwell, Williston, Blackville, St. Matthews, Manning, Summerton, Bamberg, Denmark, North, Orangeburg, and Holly Hill 1134 AM EDT Mon Jun 28 2021 ...LAKE WIND ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 4 AM EDT TUESDAY... * WHAT...East winds 15 to 25 knots with gusts up to 35 knots expected. * WHERE...Much of the Midlands and Central Savannah River Valley portions of South Carolina. * WHEN...From 6 PM this evening to 4 AM EDT Tuesday. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Boaters on area lakes should use extra caution since strong winds and rough waves can overturn small craft. && $$
1 follow-up statement
941 WWUS72 KCAE 290025 NPWCAE URGENT - WEATHER MESSAGE National Weather Service Columbia SC 825 PM EDT Mon Jun 28 2021 SCZ021-022-029-290130- /O.CAN.KCAE.LW.Y.0007.000000T0000Z-210629T0800Z/ Fairfield-Kershaw-Lee- Including the cities of Winnsboro, Winnsboro Mills, Camden, Lugoff, and Bishopville 825 PM EDT Mon Jun 28 2021 ...LAKE WIND ADVISORY IS CANCELLED... $$ GAZ040-063>065-077-SCZ018-290800- /O.EXA.KCAE.LW.Y.0007.000000T0000Z-210629T0800Z/ Lincoln-McDuffie-Columbia-Richmond-Burke-McCormick- Including the cities of Lincolnton, Thomson, Martinez, Evans, Augusta, Hephzibah, Waynesboro, and Mccormick 825 PM EDT Mon Jun 28 2021 ...LAKE WIND ADVISORY IN EFFECT UNTIL 4 AM EDT TUESDAY... * WHAT...Northeast winds 15 knots with gusts up to 30 knots. * WHERE...Portions of central South Carolina and east central Georgia. * WHEN...From 6 PM this evening to 4 AM EDT Tuesday. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Boaters on area lakes should use extra caution since strong winds and rough waves can overturn small craft. && $$ SCZ020-025>028-030-031-035-037-038-041-135>137-290800- /O.CON.KCAE.LW.Y.0007.000000T0000Z-210629T0800Z/ Newberry-Edgefield-Saluda-Lexington-Richland-Aiken-Sumter- Barnwell-Calhoun-Clarendon-Bamberg-Northwestern Orangeburg- Central Orangeburg-Southeastern Orangeburg- Including the cities of Newberry, Edgefield, Johnston, Saluda, Ridge Spring, Seven Oaks, West Columbia, Cayce, Lexington, Red Bank, Oak Grove, Columbia, Aiken, North Augusta, Sumter, Barnwell, Williston, Blackville, St. Matthews, Manning, Summerton, Bamberg, Denmark, North, Orangeburg, and Holly Hill 825 PM EDT Mon Jun 28 2021 ...LAKE WIND ADVISORY REMAINS IN EFFECT UNTIL 4 AM EDT TUESDAY... * WHAT...East winds 15 knots with gusts up to 30 knots expected. * WHERE...Much of the Midlands and Central Savannah River Valley portions of South Carolina. * WHEN...From 6 PM this evening to 4 AM EDT Tuesday. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Boaters on area lakes should use extra caution since strong winds and rough waves can overturn small craft. && $$
Nearby
Lake Wind Advisories in South Carolina, 2021Lake Wind Advisories in Georgia, 2021Every lake wind advisory 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.