Alert archive / South Carolina / Special Weather Statements in 2020

Special Weather Statement, NWS Columbia, SC

August 7, 2020Lexington County, South Carolina

NWS Columbia, SC issued this special weather statement at Aug 7, 2020, 8:58 PM EDT for Lexington County, South Carolina. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 7, 2020, 8:58 PM EDT (00:58 UTC)
Expired
Aug 7, 2020, 9:30 PM EDT
In force
32 min
Issued by
NWS Columbia, SC

County Lexington County, SC

The radar

The Columbia radar (KCAE), 19 km from the middle of the area, began a volume at 01:01 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 1.0 hours before the alert went out and 304 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.

Skew-T log-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 00:00Z on 2020-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 581 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 00:00Z on 2020-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
581 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
1734 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
11 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Columbia, SC wrote its last area forecast discussion before this special weather statement went out at Aug 7, 7:39 PM EDT, 1 hour 19 minutes earlier.

Area forecast discussion, Aug 7, 7:39 PM EDT, 1 hour 19 minutes before
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</head>
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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Hazardous weather outlook, Aug 7, 3:22 AM EDT, 17 hours 36 minutes before
Hazardous Weather Outlook
National Weather Service Columbia SC
322 AM EDT Fri Aug 7 2020

GAZ040-063>065-077-SCZ016-018-020>022-025>031-035>038-041-115-116-
080730-
Lincoln-McDuffie-Columbia-Richmond-Burke-Chesterfield-McCormick-
Newberry-Fairfield-Kershaw-Edgefield-Saluda-Lexington-Richland-Lee-
Aiken-Sumter-Barnwell-Orangeburg-Calhoun-Clarendon-Bamberg-
Northern Lancaster-Southern Lancaster-
322 AM EDT Fri Aug 7 2020

This Hazardous Weather Outlook is for the Midlands of South Carolina
and the Central Savannah River area of Georgia.

.DAY ONE...Today and tonight.

Scattered thunderstorms mainly during the afternoon and evening.
Isolated severe thunderstorms with damaging winds possible. Locally
heavy rain also a threat.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Aug 7, 5:36 PM EDT, 3 hours 22 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
536 PM EDT FRI AUG 7 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0350 PM     LIGHTNING        5 S BLYTHEWOOD          34.15N 80.97W
08/07/2020                   RICHLAND           SC   FIRE DEPT/RESCUE

            HOUSE STRUCK BY LIGHTNING AND RESULTED IN
            SMOKE IN THE ATTIC.

&&

HC
Special weather statement, Aug 7, 5:54 PM EDT, 3 hours 4 minutes before
Special Weather Statement
National Weather Service Columbia SC
554 PM EDT Fri Aug 7 2020

GAZ063>065-072245-
Richmond GA-McDuffie GA-Columbia GA-
554 PM EDT Fri Aug 7 2020

...Strong Thunderstorms Will Impact Portions of western Richmond...
southern McDuffie and Columbia Counties Until 645 PM EDT....

At 554 PM EDT...National Weather Service doppler radar indicated a
strong thunderstorm over Harlem, or 8 miles west of Grovetown, moving
northeast at 15 mph.

  HAZARD...strong winds 45 to 55 mph and up to nickel sized hail.

  IMPACT...expect minor damage to tree limbs and blowing around of
           light, unsecured objects. Minor hail damage to plants,
           trees and crops is possible. Damage to windshields is
           unlikely.

Some locations in the path of this storm include...
Grovetown, Evans, Thomson, Fort Gordon, Martinez, Harlem, Appling,
South Augusta, Riverwood, Augusta Mall, Blythe, Dearing, Liberty Park
Community Center, Sweetwater Park, Arties Pond Public Fishing Area,
Glenn Hills, McDuffie County Fire Department, Bath-Edie, Adamsville
and Thomson Fire Department.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify. Monitor NOAA Weather Radio, local radio and
television stations for additional information and possible warnings
from the National Weather Service.

&&

This includes the following highways...
 Interstate 20 in Georgia between mile markers 172 and 196.
 Interstate 520 in Georgia between mile markers 1 and 7.

LAT...LON 3348 8258 3364 8220 3341 8202 3327 8228
      3331 8234 3331 8239 3332 8241 3333 8242
      3334 8247
TIME...MOT...LOC 2154Z 239DEG 15KT 3341 8235

fwa
Special weather statement, Aug 7, 6:02 PM EDT, 2 hours 56 minutes before
Special Weather Statement
National Weather Service Columbia SC
602 PM EDT Fri Aug 7 2020

SCZ027-037-072230-
Lexington SC-Calhoun SC-
602 PM EDT Fri Aug 7 2020

...Strong Thunderstorms Will Impact Portions of southeastern
Lexington and northwestern Calhoun Counties Until 630 PM EDT....

At 602 PM EDT...National Weather Service doppler radar indicated a
strong thunderstorm 7 miles south of Red Bank, moving northeast at 15
mph.

  HAZARD...strong winds 45 to 55 mph, pea sized hail and localized
           minor flooding.

  IMPACT...expect minor damage to tree limbs and blowing around of
           light, unsecured objects. Minor hail damage to plants,
           trees and crop is possible. Damage to windshields is
           unlikely. Localized, minor flooding of low lying and poor
           drainage areas is also possible.

Some locations in the path of this storm include...
West Columbia, Cayce, Springdale, Oak Grove, Red Bank, South
Congaree, Pine Ridge, Gaston, SC State Farmer's Market, Columbia
Metro Airport, Pelion, New Zion, Lexington County Airport At Pelion,
Lexington Acres Pond, Peachtree Rock, Edmund, Silver Lake, Dixiana
and Red Bank Sports Complex.

Heavy rainfall is occurring with this storm, and may cause localized
flooding. Do not drive your vehicle through flooded roadways.

This includes the following highways...
 Interstate 26 between mile markers 110 and 124.
 Interstate 77 near mile marker 0.

LAT...LON 3371 8123 3386 8135 3402 8112 3382 8098
TIME...MOT...LOC 2202Z 239DEG 15KT 3383 8122

fwa
Special weather statement, Aug 7, 6:38 PM EDT, 2 hours 20 minutes before
Special Weather Statement
National Weather Service Columbia SC
638 PM EDT Fri Aug 7 2020

SCZ036-037-072315-
Orangeburg SC-Calhoun SC-
638 PM EDT Fri Aug 7 2020

...Strong Thunderstorms Will Impact Portions of central Orangeburg
and south central Calhoun Counties Until 715 PM EDT....

At 637 PM EDT...National Weather Service doppler radar indicated a
strong thunderstorm near Bowman, or 10 miles southeast of Orangeburg,
moving north at 15 mph.

  HAZARD...gusty winds 40 to 50 mph and up to penny sized hail.

  IMPACT...expect minor damage to tree limbs and blowing around of
           light, unsecured objects. Minor hail damage to plants,
           trees and crops is possible. Damage to windshields is
           unlikely.

Some locations in the path of this storm include...
Brookdale, Branchville, Bowman, Elloree, Cameron, Rowesville,
Wilkinson Heights and Yonder Field.

This includes Interstate 26 between mile markers 147 and 164.

LAT...LON 3319 8082 3320 8082 3321 8084 3324 8085
      3326 8089 3328 8091 3360 8080 3350 8050
      3325 8066 3318 8080
TIME...MOT...LOC 2237Z 201DEG 12KT 3338 8074

fwa
Special weather statement, Aug 7, 6:59 PM EDT, 1 hour 59 minutes before
Special Weather Statement
National Weather Service Columbia SC
659 PM EDT Fri Aug 7 2020

SCZ030-035-036-072330-
Orangeburg SC-Barnwell SC-Aiken SC-
659 PM EDT Fri Aug 7 2020

...Strong Thunderstorms Will Impact Portions of west central
Orangeburg...northeastern Barnwell and east central Aiken Counties
Until 730 PM EDT....

At 659 PM EDT...National Weather Service doppler radar indicated a
strong thunderstorm near Williston, or 13 miles north of Barnwell,
moving northeast at 15 mph.

  HAZARD...strong winds 45 to 55 mph, pea sized hail and excessive
           cloud to ground lightning.

  IMPACT...expect minor damage to tree limbs and blowing around of
           light, unsecured objects. Minor hail damage to plants,
           trees and crops is possible. Damage to windshields is
           unlikely. All outdoor activities should cease. Move
           indoors immediately.

Some locations in the path of this storm include...
Williston, Blackville, Wagener, Springfield, Salley, Neeses, Perry,
Livingston, Aiken Gopher Tortoise Heritage Preserve and Perry
Airport.

Move indoors immediately.  Excessive cloud to ground lightning is
occurring with this storm. If you can hear thunder, you are close
enough to be struck by lightning.

LAT...LON 3343 8149 3369 8133 3354 8106 3343 8120
      3344 8122 3342 8122 3336 8130
TIME...MOT...LOC 2259Z 213DEG 15KT 3344 8135

fwa
Special weather statement, Aug 7, 7:09 PM EDT, 1 hour 49 minutes before
Special Weather Statement
National Weather Service Columbia SC
709 PM EDT Fri Aug 7 2020

SCZ028-031-036>038-072345-
Orangeburg SC-Calhoun SC-Clarendon SC-Sumter SC-Richland SC-
709 PM EDT Fri Aug 7 2020

...Strong Thunderstorms Will Impact Portions of northeastern
Orangeburg...southeastern Calhoun...southwestern Clarendon...
southwestern Sumter and southeastern Richland Counties Until 745 PM
EDT....

...Boaters on Lake Marion Should Seek Safe Harbor...

At 708 PM EDT...National Weather Service doppler radar indicated a
strong thunderstorm over Santee State Park, or 18 miles southwest of
Manning, moving northeast at 15 mph.

  HAZARD...strong winds 45 to 55 mph, pea sized hail, excessive
           cloud to ground lightning and localized minor flooding.

  IMPACT...expect minor damage to tree limbs and blowing around of
           light, unsecured objects. Minor hail damage to plants,
           trees and crops is possible. Damage to windshields is
           unlikely. All outdoor activities should cease. Move
           indoors immediately. Localized, minor flooding of low
           lying and poor drainage areas is also possible.

Some locations in the path of this storm include...
Manning, Summerton, Elloree, Santee State Park, Poinsett State Park,
Santee, Pinewood, Cameron, Paxville, Vance, Poplar Creek Landing,
Rimini, St. Paul, Fort Motte, Stumphole Landing, Creston, Lone Star,
Low Falls Landing and Mill Creek Marina and Campground.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Boaters on Lake Marion should move to shore and seek shelter. Strong,
erratic wind gusts and lightning are possible. If you can hear
thunder, you are close enough to be struck by lightning.

Heavy rainfall is occurring with this storm, and may cause localized
flooding. Do not drive your vehicle through flooded roadways.

Move indoors immediately.  Excessive cloud to ground lightning is
occurring with this storm. If you can hear thunder, you are close
enough to be struck by lightning.

&&

This includes Interstate 95 between mile markers 96 and 117.

LAT...LON 3342 8042 3356 8081 3384 8063 3368 8022
TIME...MOT...LOC 2308Z 213DEG 15KT 3357 8050

fwa

The office that day

Everything else NWS Columbia, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 7, 8:33 PM EDTSpecial Weather StatementCAELexington42 min
Aug 8, 4:23 PM EDTSpecial Weather StatementCAEBurke52 min
Aug 8, 4:54 PM EDTSpecial Weather StatementCAEMcDuffie51 min

Nearby

Special Weather Statements in South Carolina, 2020Every special weather statement in 2020

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.