Alert archive / South Carolina / Frost Advisories in 2017
Frost Advisory 2, NWS Columbia, SC
NWS Columbia, SC issued this frost advisory at Nov 19, 2017, 1:34 PM EST for 11 counties in South Carolina; 4 counties in Georgia. It took effect at Nov 20, 2017, 4:00 AM EST. It was in force for 20 min.
The area
The counties it named.
The facts
- Issued
- Nov 19, 2017, 1:34 PM EST (18:34 UTC)
- In effect from
- Nov 20, 2017, 4:00 AM EST
- Expired
- Nov 20, 2017, 4:20 AM EST
- In force
- 20 min
- 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, Richland County, SC, Sumter County, SC
The radar
The Columbia radar (KCAE), 26 km from the middle of the area, began a volume at 18:35 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, 6.6 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 985 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 108 m²/s²
- 0-3 km storm-relative helicity
- 114 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
833 WWUS72 KCAE 191834 NPWCAE URGENT - WEATHER MESSAGE National Weather Service Columbia SC 134 PM EST Sun Nov 19 2017 GAZ040-SCZ015-018-020-021-025-026-201200- /O.NEW.KCAE.FZ.W.0010.171120T0900Z-171120T1300Z/ Lincoln-Lancaster-McCormick-Newberry-Fairfield-Edgefield-Saluda- Including the cities of Lincolnton, Lancaster, Elgin, Lancaster Mill, Mccormick, Newberry, Winnsboro, Winnsboro Mills, Edgefield, Johnston, Saluda, and Ridge Spring 134 PM EST Sun Nov 19 2017 ...FREEZE WARNING IN EFFECT FROM 4 AM TO 8 AM EST MONDAY... The National Weather Service in Columbia has issued a Freeze Warning, which is in effect from 4 AM to 8 AM EST Monday. * TEMPERATURE...Lows in the lower 30s. * IMPACTS...Freezing temperatures may damage sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. Ensure livestock and any outdoor pets have shelter from the cold. && $$ GAZ063>065-077-SCZ016-022-027>031-035>038-041-201200- /O.NEW.KCAE.FR.Y.0002.171120T0900Z-171120T1400Z/ McDuffie-Columbia-Richmond-Burke-Chesterfield-Kershaw-Lexington- Richland-Lee-Aiken-Sumter-Barnwell-Orangeburg-Calhoun-Clarendon- Bamberg- Including the cities of Thomson, Martinez, Evans, Hephzibah, Waynesboro, Cheraw, Pageland, Camden, Lugoff, Seven Oaks, West Columbia, Cayce, Lexington, Red Bank, Oak Grove, Columbia, Bishopville, Aiken, North Augusta, Sumter, Barnwell, Williston, Blackville, Orangeburg, Brookdale, St. Matthews, Manning, Summerton, Bamberg, and Denmark 134 PM EST Sun Nov 19 2017 ...FROST ADVISORY IN EFFECT FROM 4 AM TO 9 AM EST MONDAY... The National Weather Service in Columbia has issued a Frost Advisory, which is in effect from 4 AM to 9 AM EST Monday. * TEMPERATURE...Low temperatures in the mid 30s. * IMPACTS... Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Frost Advisory means that widespread frost is expected. Sensitive outdoor plants may be killed if left uncovered. Ensure livestock and any outdoor pets have shelter from the cold. && $$
1 follow-up statement
755 WWUS72 KCAE 200920 NPWCAE URGENT - WEATHER MESSAGE National Weather Service Columbia SC 420 AM EST Mon Nov 20 2017 ...Freezing temperatures with frost this morning... .The freeze warning has been expanded to include all counties in the Midlands amnd CSRA... GAZ063>065-077-SCZ016-022-027>031-035>038-041-201400- /O.UPG.KCAE.FR.Y.0002.000000T0000Z-171120T1400Z/ /O.EXB.KCAE.FZ.W.0010.000000T0000Z-171120T1400Z/ McDuffie-Columbia-Richmond-Burke-Chesterfield-Kershaw-Lexington- Richland-Lee-Aiken-Sumter-Barnwell-Orangeburg-Calhoun-Clarendon- Bamberg- Including the cities of Thomson, Martinez, Evans, 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, Orangeburg, Brookdale, St. Matthews, Manning, Summerton, Bamberg, and Denmark 420 AM EST Mon Nov 20 2017 ...FREEZE WARNING IN EFFECT UNTIL 9 AM EST THIS MORNING... The National Weather Service in Columbia has issued a Freeze Warning, which is in effect until 9 AM EST this morning. The Frost Advisory is no longer in effect. * TEMPERATURES...29 to 32. * IMPACTS...Frost and freeze conditions may damage sensitive vegetation. Take steps now to protect tender plants from the cold. Frost expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. && $$ GAZ040-SCZ015-018-020-021-025-026-201400- /O.EXT.KCAE.FZ.W.0010.000000T0000Z-171120T1400Z/ Lincoln-Lancaster-McCormick-Newberry-Fairfield-Edgefield-Saluda- Including the cities of Lincolnton, Lancaster, Elgin, Lancaster Mill, Mccormick, Newberry, Winnsboro, Winnsboro Mills, Edgefield, Johnston, Saluda, and Ridge Spring 420 AM EST Mon Nov 20 2017 ...FREEZE WARNING NOW IN EFFECT UNTIL 9 AM EST THIS MORNING... * TEMPERATURE...27 to 30. * IMPACTS...Frost and freeze conditions may damage sensitive vegetation. Take steps now to protect tender plants from the cold. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. Ensure livestock and any outdoor pets have shelter from the cold. && $$
The office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 18, 7:01 PM EST | Lake Wind Advisory | CAE | Aiken, Bamberg, Barnwell, Calhoun, Chesterfield, Clarendon and 10 more | 12 hr |
| Nov 19, 1:34 PM EST | Freeze Warning | CAE | Aiken, Bamberg, Barnwell, Calhoun, Chesterfield, Clarendon and 10 more | 19 hr |
| Nov 19, 12:34 AM EST | Special Weather Statement | CAE | Burke, Columbia, McDuffie, Richmond | 41 min |
Nearby
Frost Advisories in South Carolina, 2017Frost Advisories in Georgia, 2017Every frost advisory in 2017
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.