Alert archive / South Carolina / Frost Advisories in 2021
Frost Advisory 3, NWS Columbia, SC
NWS Columbia, SC issued this frost advisory at Apr 22, 2021, 2:19 PM EDT for 4 counties in Georgia; 13 counties in South Carolina. It took effect at Apr 23, 2021, 4:00 AM EDT. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Apr 22, 2021, 2:19 PM EDT (18:19 UTC)
- In effect from
- Apr 23, 2021, 4:00 AM EDT
- Expired
- Apr 23, 2021, 8:31 AM EDT
- In force
- 5 hr
- Issued by
- NWS Columbia, SC
Counties Columbia County, GA, Lincoln County, GA, McDuffie County, GA, Richmond County, GA, Aiken County, SC, Chesterfield County, SC, Edgefield County, SC, Fairfield County, SC, Kershaw County, SC, Lancaster County, SC, Lee County, SC, Lexington County, SC, McCormick County, SC, Newberry County, SC, Richland County, SC, Saluda County, SC, Sumter County, SC
The radar
The Columbia radar (KCAE), 27 km from the middle of the area, began a volume at 18:16 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, 6.3 hours before the alert went out and 178 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
- 2114 m above ground
- 0-6 km bulk shear
- 73 kt
- 0-1 km storm-relative helicity
- -292 m²/s²
- 0-3 km storm-relative helicity
- 148 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
971 WWUS72 KCAE 221819 NPWCAE URGENT - WEATHER MESSAGE National Weather Service Columbia SC 219 PM EDT Thu Apr 22 2021 SCZ016-018-020>022-025-026-115-116-230230- /O.NEW.KCAE.FR.Y.0003.210423T0800Z-210423T1300Z/ Chesterfield-McCormick-Newberry-Fairfield-Kershaw-Edgefield- Saluda-Northern Lancaster-Southern Lancaster- Including the cities of Cheraw, Pageland, Mccormick, Newberry, Winnsboro, Winnsboro Mills, Camden, Lugoff, Edgefield, Johnston, Saluda, Ridge Spring, Indian Land, Lancaster, Elgin, and Lancaster Mill 219 PM EDT Thu Apr 22 2021 ...FROST ADVISORY IN EFFECT FROM 4 AM TO 9 AM EDT FRIDAY... * WHAT...Temperatures as low as 35 will result in frost formation. * WHERE...Portions of central South Carolina. * WHEN...From 4 AM to 9 AM EDT Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
3 follow-up statements
323 WWUS72 KCAE 222313 NPWCAE URGENT - WEATHER MESSAGE National Weather Service Columbia SC 713 PM EDT Thu Apr 22 2021 GAZ040-063>065-SCZ027>031-230715- /O.EXA.KCAE.FR.Y.0003.210423T0800Z-210423T1300Z/ Lincoln-McDuffie-Columbia-Richmond-Lexington-Richland-Lee-Aiken- Sumter- Including the cities of Lincolnton, Thomson, Martinez, Evans, Augusta, Hephzibah, Seven Oaks, West Columbia, Cayce, Lexington, Red Bank, Oak Grove, Columbia, Bishopville, Aiken, North Augusta, and Sumter 713 PM EDT Thu Apr 22 2021 ...FROST ADVISORY IN EFFECT FROM 4 AM TO 9 AM EDT FRIDAY... * WHAT...Temperatures in the mid 30s will result in frost formation. * WHERE...Portions of central South Carolina and east central Georgia. * WHEN...From 4 AM to 9 AM EDT Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ SCZ016-018-020>022-025-026-115-116-230715- /O.CON.KCAE.FR.Y.0003.210423T0800Z-210423T1300Z/ Chesterfield-McCormick-Newberry-Fairfield-Kershaw-Edgefield- Saluda-Northern Lancaster-Southern Lancaster- Including the cities of Cheraw, Pageland, Mccormick, Newberry, Winnsboro, Winnsboro Mills, Camden, Lugoff, Edgefield, Johnston, Saluda, Ridge Spring, Indian Land, Lancaster, Elgin, and Lancaster Mill 713 PM EDT Thu Apr 22 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 4 AM TO 9 AM EDT FRIDAY... * WHAT...Temperatures in the low to mid 30s will result in frost formation. * WHERE...Portions of central South Carolina. * WHEN...From 4 AM to 9 AM EDT Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ awp
987 WWUS72 KCAE 230821 NPWCAE URGENT - WEATHER MESSAGE National Weather Service Columbia SC 421 AM EDT Fri Apr 23 2021 GAZ040-063>065-SCZ016-018-020>022-025>031-115-116-231300- /O.CON.KCAE.FR.Y.0003.000000T0000Z-210423T1300Z/ Lincoln-McDuffie-Columbia-Richmond-Chesterfield-McCormick- Newberry-Fairfield-Kershaw-Edgefield-Saluda-Lexington-Richland- Lee-Aiken-Sumter-Northern Lancaster-Southern Lancaster- Including the cities of Lincolnton, Thomson, Martinez, Evans, Augusta, Hephzibah, Cheraw, Pageland, Mccormick, Newberry, Winnsboro, Winnsboro Mills, Camden, Lugoff, Edgefield, Johnston, Saluda, Ridge Spring, Seven Oaks, West Columbia, Cayce, Lexington, Red Bank, Oak Grove, Columbia, Bishopville, Aiken, North Augusta, Sumter, Indian Land, Lancaster, Elgin, and Lancaster Mill 421 AM EDT Fri Apr 23 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING... * WHAT...Temperatures in the mid 30s will result in frost formation. * WHERE...Portions of central South Carolina and east central Georgia. * WHEN...From 4 AM to 9 AM EDT Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
711 WWUS72 KCAE 231231 NPWCAE URGENT - WEATHER MESSAGE National Weather Service Columbia SC 831 AM EDT Fri Apr 23 2021 GAZ040-063>065-SCZ016-018-020>022-025>031-115-116-231345- /O.CAN.KCAE.FR.Y.0003.000000T0000Z-210423T1300Z/ Lincoln-McDuffie-Columbia-Richmond-Chesterfield-McCormick- Newberry-Fairfield-Kershaw-Edgefield-Saluda-Lexington-Richland- Lee-Aiken-Sumter-Northern Lancaster-Southern Lancaster- Including the cities of Lincolnton, Thomson, Martinez, Evans, Augusta, Hephzibah, Cheraw, Pageland, Mccormick, 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, Indian Land, Lancaster, Elgin, and Lancaster Mill 831 AM EDT Fri Apr 23 2021 ...FROST ADVISORY IS CANCELLED... Temperatures have warmed several degrees above freezing ending any frost potential. $$
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.