Alert archive / Georgia / Special Weather Statements in 2019

Special Weather Statement, NWS Columbia, SC

August 4, 2019Columbia County, Georgia

NWS Columbia, SC issued this special weather statement at Aug 4, 2019, 9:13 AM EDT for Columbia County, Georgia. It was in force for 62 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 4, 2019, 9:13 AM EDT (13:13 UTC)
Expired: Aug 4, 2019, 10:15 AM EDT
In force: 62 min
Issued by: NWS Columbia, SC

County Columbia County, GA

The radar

The Columbia radar (KCAE), 110 km from the middle of the area, began a volume at 13:15 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 12:00Z, 1.2 hours before the alert went out and 213 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 56 J/kg
Mixed-layer CIN: -143 J/kg
Mixed-layer LCL: 999 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -38 m²/s²
0-3 km storm-relative helicity: -38 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

681 
WWUS82 KCAE 041313
SPSCAE

Special Weather Statement
National Weather Service Columbia SC
913 AM EDT Sun Aug 4 2019
 
GAZ040-063>065-SCZ018-025-030-041415-
Richmond GA-McDuffie GA-Lincoln GA-Columbia GA-Aiken SC-McCormick SC-
Edgefield SC-
913 AM EDT Sun Aug 4 2019

...Strong Thunderstorms Will Impact Portions of north central
Richmond...north central McDuffie...southeastern Lincoln...
Columbia...western Aiken...southeastern McCormick and southwestern
Edgefield Counties Until 1015 AM EDT....

...Boaters on Lake Strom Thurmond Should Seek Safe Harbor... 

At 911 AM EDT...National Weather Service doppler radar indicated a
strong thunderstorm near Mistletoe State Park, or 12 miles northwest
of Evans, moving northeast at 15 mph.

  HAZARD...excessive cloud to ground lightning and localized minor 
           flooding.

  IMPACT...all outdoor activities should cease. Move indoors 
           immediately. Localized minor flooding of low lying and 
           poor drainage areas is possible.

Some locations in the path of this storm include...
North Augusta, Grovetown, Evans, Martinez, Appling, Clarks Hill
Recreation Area, Riverwood, Mistletoe State Park, Hamilton Branch
State Park, Village Plaza Shopping Center, J. Strom Thurmond Dam,
Parksville, Plum Branch, Poverty Hill, Scott's Landing, Knox Scout
Reservation, Double Branches, Wildwood Park, Westmont and New Hope.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Boaters on Lake Strom Thurmond 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. Rainfall amounts from 1 to 3 inches are possible as the 
area of thunderstorms moves slowly to the northeast. 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.

Persons in campgrounds should seek shelter until this storm passes.

&&

This includes the following highways...
 Interstate 20 in Georgia between mile markers 184 and 201.
 Interstate 20 in South Carolina between mile markers 0 and 1.

LAT...LON 3342 8219 3363 8249 3390 8234 3359 8191
TIME...MOT...LOC 1311Z 206DEG 12KT 3362 8232 

$$

LCV

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 9:18 AM EDT	Areal Flood Advisory	CAE	Edgefield, McCormick	3 hr
Aug 4, 9:29 AM EDT	Areal Flood Advisory	CAE	Aiken	2 hr
Aug 4, 11:29 AM EDT	Special Weather Statement	CAE	Barnwell	31 min
Aug 4, 12:14 PM EDT	Special Weather Statement	CAE	Bamberg, Orangeburg	31 min
Aug 4, 12:30 PM EDT	Special Weather Statement	CAE	Richland	30 min
Aug 4, 1:02 PM EDT	Special Weather Statement	CAE	Bamberg	28 min
Aug 4, 2:10 PM EDT	Special Weather Statement	CAE	Clarendon	35 min
Aug 4, 2:57 PM EDT	Areal Flood Advisory	CAE	Chesterfield, Kershaw, Lancaster	2 hr
Aug 4, 8:14 AM EDT	Areal Flood Advisory	CAE	Columbia, Lincoln, McDuffie	2 hr
Aug 4, 8:51 AM EDT	Areal Flood Advisory	CAE	Columbia, Lincoln	114 min

Nearby

Special Weather Statements in Georgia, 2019 Every special weather statement in 2019

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.