Alert archive / South Carolina / Frost Advisories in 2021
Frost Advisory 7, NWS Columbia, SC
NWS Columbia, SC issued this frost advisory at Nov 15, 2021, 10:46 AM EST for 4 counties in Georgia; 12 counties in South Carolina. It took effect at Nov 16, 2021, 3:00 AM EST. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Nov 15, 2021, 10:46 AM EST (15:46 UTC)
- In effect from
- Nov 16, 2021, 3:00 AM EST
- Expired
- Nov 16, 2021, 9:00 AM EST
- In force
- 6 hr
- Issued by
- NWS Columbia, SC
Counties Burke County, GA, Columbia County, GA, McDuffie County, GA, Richmond County, GA, Aiken County, SC, Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Chesterfield County, SC, Clarendon County, SC, Kershaw County, SC, Lee County, SC, Lexington County, SC, Orangeburg County, SC, Richland County, SC, Sumter County, SC
The radar
The Columbia radar (KCAE), 27 km from the middle of the area, began a volume at 15:44 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, 3.8 hours before the alert went out and 139 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2084 m above ground
- 0-6 km bulk shear
- 73 kt
- 0-1 km storm-relative helicity
- -59 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
962 WWUS72 KCAE 151546 NPWCAE URGENT - WEATHER MESSAGE National Weather Service Columbia SC 1046 AM EST Mon Nov 15 2021 GAZ063>065-077-SCZ016-022-027>031-035-037-038-041-135>137-161015- /O.NEW.KCAE.FR.Y.0007.211116T0800Z-211116T1400Z/ McDuffie-Columbia-Richmond-Burke-Chesterfield-Kershaw-Lexington- Richland-Lee-Aiken-Sumter-Barnwell-Calhoun-Clarendon-Bamberg- Northwestern Orangeburg-Central Orangeburg- Southeastern Orangeburg- Including the cities of Thomson, Martinez, Evans, Augusta, Hephzibah, Waynesboro, Cheraw, Pageland, Camden, Lugoff, 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 1046 AM EST Mon Nov 15 2021 ...FROST ADVISORY IN EFFECT FROM 3 AM TO 9 AM EST TUESDAY... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Portions of central South Carolina and east central Georgia. * WHEN...From 3 AM to 9 AM EST Tuesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
3 follow-up statements
677 WWUS72 KCAE 152336 NPWCAE URGENT - WEATHER MESSAGE National Weather Service Columbia SC 636 PM EST Mon Nov 15 2021 GAZ063>065-077-SCZ016-022-027>031-035-037-038-041-135>137-161400- /O.CON.KCAE.FR.Y.0007.211116T0800Z-211116T1400Z/ McDuffie-Columbia-Richmond-Burke-Chesterfield-Kershaw-Lexington- Richland-Lee-Aiken-Sumter-Barnwell-Calhoun-Clarendon-Bamberg- Northwestern Orangeburg-Central Orangeburg- Southeastern Orangeburg- Including the cities of Thomson, Martinez, Evans, Augusta, Hephzibah, Waynesboro, Cheraw, Pageland, Camden, Lugoff, Seven Oaks, West Columbia, Cayce, Lexington, Red Bank, Oak Grove, Columbia, Bishopville, Aiken, North Augusta, Sumter, Barnwell, Williston, Blackville, St. Matthews, Manning, Summerton, Bamberg, Denmark, North, Orangeburg, and Holly Hill 636 PM EST Mon Nov 15 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 9 AM EST TUESDAY... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Portions of central South Carolina and east central Georgia. * WHEN...From 3 AM to 9 AM EST Tuesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
852 WWUS72 KCAE 160604 NPWCAE URGENT - WEATHER MESSAGE National Weather Service Columbia SC 104 AM EST Tue Nov 16 2021 GAZ063>065-077-SCZ016-022-027>031-035-037-038-041-135>137-161400- /O.CON.KCAE.FR.Y.0007.211116T0800Z-211116T1400Z/ McDuffie-Columbia-Richmond-Burke-Chesterfield-Kershaw-Lexington- Richland-Lee-Aiken-Sumter-Barnwell-Calhoun-Clarendon-Bamberg- Northwestern Orangeburg-Central Orangeburg- Southeastern Orangeburg- Including the cities of Thomson, Martinez, Evans, Augusta, Hephzibah, Waynesboro, Cheraw, Pageland, Camden, Lugoff, 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 104 AM EST Tue Nov 16 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Portions of central South Carolina and east central Georgia. * WHEN...Until 9 AM EST this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
702 WWUS72 KCAE 161344 NPWCAE URGENT - WEATHER MESSAGE National Weather Service Columbia SC 844 AM EST Tue Nov 16 2021 GAZ063>065-077-SCZ016-022-027>031-035-037-038-041-135>137-161445- /O.EXP.KCAE.FR.Y.0007.000000T0000Z-211116T1400Z/ McDuffie-Columbia-Richmond-Burke-Chesterfield-Kershaw-Lexington- Richland-Lee-Aiken-Sumter-Barnwell-Calhoun-Clarendon-Bamberg- Northwestern Orangeburg-Central Orangeburg- Southeastern Orangeburg- Including the cities of Thomson, Martinez, Evans, Augusta, Hephzibah, Waynesboro, Cheraw, Pageland, Camden, Lugoff, Seven Oaks, West Columbia, Cayce, Lexington, Red Bank, Oak Grove, Columbia, Bishopville, Aiken, North Augusta, Sumter, Barnwell, Williston, Blackville, St. Matthews, Manning, Summerton, Bamberg, Denmark, North, Orangeburg, and Holly Hill 844 AM EST Tue Nov 16 2021 ...FROST ADVISORY WILL EXPIRE AT 9 AM EST THIS MORNING... TEMPERATURES CONTINUE TO WARM ACROSS THE ADVISORY AREA AND FROST IS NO LONGER EXPECTED. $$
Nearby
Frost Advisories in South Carolina, 2021Frost Advisories in Georgia, 2021Every frost 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.