Alert archive / South Carolina / Wind Advisories in 2018
Wind Advisory 1, NWS Columbia, SC
NWS Columbia, SC issued this wind advisory at Dec 21, 2018, 5:08 AM EST for 4 counties in Georgia; 11 counties in South Carolina. It took effect at Dec 21, 2018, 11:00 AM EST. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Dec 21, 2018, 5:08 AM EST (10:08 UTC)
- In effect from
- Dec 21, 2018, 11:00 AM EST
- Expired
- Dec 21, 2018, 6:00 PM EST
- In force
- 7 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, Richland County, SC, Sumter County, SC
The radar
The Columbia radar (KCAE), 26 km from the middle of the area, began a volume at 10:09 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 00:00Z, 10.1 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
- 49 J/kg
- Mixed-layer CIN
- -105 J/kg
- Mixed-layer LCL
- 881 m above ground
- 0-6 km bulk shear
- 87 kt
- 0-1 km storm-relative helicity
- 76 m²/s²
- 0-3 km storm-relative helicity
- 222 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
238 WWUS72 KCAE 211008 NPWCAE URGENT - WEATHER MESSAGE National Weather Service Columbia SC 508 AM EST Fri Dec 21 2018 GAZ063>065-077-SCZ016-022-027>031-035>038-041-211745- /O.NEW.KCAE.WI.Y.0001.181221T1600Z-181221T2300Z/ /O.NEW.KCAE.LW.Y.0025.181221T2300Z-181222T0900Z/ /O.EXT.KCAE.LW.Y.0024.181221T1200Z-181221T1600Z/ McDuffie-Columbia-Richmond-Burke-Chesterfield-Kershaw-Lexington- Richland-Lee-Aiken-Sumter-Barnwell-Orangeburg-Calhoun-Clarendon- Bamberg- 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, Orangeburg, Brookdale, St. Matthews, Manning, Summerton, Bamberg, and Denmark 508 AM EST Fri Dec 21 2018 ...LAKE WIND ADVISORY NOW IN EFFECT FROM 7 AM TO 11 AM EST THIS MORNING... ...WIND ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 6 PM EST THIS EVENING... ...LAKE WIND ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 4 AM EST SATURDAY... The National Weather Service in Columbia has issued a Wind Advisory, which is in effect from 11 AM this morning to 6 PM EST this evening. A Lake Wind Advisory has also been issued. This Lake Wind Advisory is in effect from 6 PM this evening to 4 AM EST Saturday. * WINDS...Southwest 20 to 25 mph with gusts up to 40 mph. * TIMING...Breezy conditions expected to develop early this morning. Highest wind gusts are expected late morning through the late afternoon. Gradually diminishing winds tonight with breezy conditions continuing on area lakes until late tonight. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Lake Wind Advisory indicates that winds will cause rough chop on area lakes. Small boats will be especially prone to capsizing. A Wind Advisory means that winds of 35 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. && $$ GAZ040-SCZ015-018-020-021-025-026-211745- /O.EXT.KCAE.LW.Y.0024.181221T1200Z-181222T0900Z/ Lincoln-Lancaster-McCormick-Newberry-Fairfield-Edgefield-Saluda- Including the cities of Lincolnton, Lancaster, Elgin, Lancaster Mill, Mccormick, Newberry, Winnsboro, Winnsboro Mills, Edgefield, Johnston, Saluda, and Ridge Spring 508 AM EST Fri Dec 21 2018 ...LAKE WIND ADVISORY NOW IN EFFECT FROM 7 AM THIS MORNING TO 4 AM EST SATURDAY... * WINDS...Southwest 15 to 20 mph with gusts up to 35 mph. * TIMING...Today and tonight. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Lake Wind Advisory indicates that winds will cause rough chop on area lakes. Small boats will be especially prone to capsizing. && $$
1 follow-up statement
548 WWUS72 KCAE 211612 NPWCAE URGENT - WEATHER MESSAGE National Weather Service Columbia SC 1112 AM EST Fri Dec 21 2018 GAZ063>065-077-SCZ016-022-027>031-035>038-041-220000- /O.EXP.KCAE.LW.Y.0024.000000T0000Z-181221T1600Z/ /O.CON.KCAE.WI.Y.0001.000000T0000Z-181221T2300Z/ /O.CON.KCAE.LW.Y.0025.181221T2300Z-181222T0900Z/ McDuffie-Columbia-Richmond-Burke-Chesterfield-Kershaw-Lexington- Richland-Lee-Aiken-Sumter-Barnwell-Orangeburg-Calhoun-Clarendon- Bamberg- 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, Orangeburg, Brookdale, St. Matthews, Manning, Summerton, Bamberg, and Denmark 1112 AM EST Fri Dec 21 2018 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM EST THIS EVENING... ...LAKE WIND ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 4 AM EST SATURDAY... * WINDS...Southwest 20 to 25 mph with gusts up to 40 mph. * TIMING...Highest wind gusts are expected through the late afternoon. Gradually diminishing winds tonight with breezy conditions continuing on area lakes until late tonight. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Strong winds and rough waves on area lakes will create hazardous conditions for small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Wind Advisory means that winds 30 to 40 mph are expected. Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. A Lake Wind Advisory indicates that winds will cause rough chop on area lakes. Small boats will be especially prone to capsizing. && $$ GAZ040-SCZ015-018-020-021-025-026-220000- /O.CON.KCAE.LW.Y.0024.000000T0000Z-181222T0900Z/ Lincoln-Lancaster-McCormick-Newberry-Fairfield-Edgefield-Saluda- Including the cities of Lincolnton, Lancaster, Elgin, Lancaster Mill, Mccormick, Newberry, Winnsboro, Winnsboro Mills, Edgefield, Johnston, Saluda, and Ridge Spring 1112 AM EST Fri Dec 21 2018 ...LAKE WIND ADVISORY REMAINS IN EFFECT UNTIL 4 AM EST SATURDAY... * WINDS...Southwest 15 to 20 mph with gusts up to 35 mph. * TIMING...This afternoon and tonight. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Lake Wind Advisory indicates that winds will cause rough chop on area lakes. Small boats will be especially prone to capsizing. && $$
The office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 21, 5:08 AM EST | Lake Wind Advisory | CAE | Burke, Columbia, McDuffie, Richmond | 23 hr |
| Dec 20, 10:10 PM EST | River Flood Warning | CAE | Chesterfield, Marlboro | 5 days |
| Dec 20, 10:10 PM EST | River Flood Warning | CAE | Fairfield, Kershaw, Lancaster | 20 days |
Nearby
Wind Advisories in South Carolina, 2018Wind Advisories in Georgia, 2018Every wind advisory in 2018
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.