Alert archive / Georgia / Special Weather Statements in 2021

Special Weather Statement, NWS Atlanta, GA

December 19, 2021Montgomery County, Toombs County, Georgia

NWS Atlanta, GA issued this special weather statement at Dec 19, 2021, 3:56 AM EST for Montgomery County, Toombs County, Georgia. It was in force for 49 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
Dec 19, 2021, 3:56 AM EST (08:56 UTC)
Expired
Dec 19, 2021, 4:45 AM EST
In force
49 min
Issued by
NWS Atlanta, GA
Hail
0.00 in
Wind
30

Counties Montgomery County, GA, Toombs County, GA

The radar

The Robins AFB radar (KJGX), 103 km from the middle of the area, began a volume at 08:59 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

Jacksonville, FL (KJAX), launched 00:00Z, 8.9 hours before the alert went out and 202 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, Jacksonville, FL at 00:00Z on 2021-12-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 613 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jacksonville, FL at 00:00Z on 2021-12-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 61 square meters per square second.193958Sfc1 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
613 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
1059 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
61 m²/s²
0-3 km storm-relative helicity
56 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.9

Open this sounding in Storm Lab

The text

As transmitted.

814 
WWUS82 KFFC 190856
SPSFFC

Special Weather Statement
National Weather Service Peachtree City GA
356 AM EST Sun Dec 19 2021
 
GAZ086-112-113-190945-
Toombs GA-Emanuel GA-Montgomery GA-
356 AM EST Sun Dec 19 2021

...A strong thunderstorm will impact portions of south central
Emanuel, central Toombs and Montgomery Counties through 445 AM EST...

At 354 AM EST, National Weather Service doppler radar indicated a
strong thunderstorms near Mount Vernon, moving northeast at 30 mph.

HAZARD...30 to 40 mph wind and increased chance of a brief tornado.

SOURCE...Radar indicated.

IMPACT...This storm has exhibited localized rotation. A brief 
         tornado could quickly form.

Locations impacted include...
Lyons, Mount Vernon, Vidalia, Uvalda, Oak Park, Ailey, Higgston,
Santa Claus, Alston, Center, Ohoopee, Ponderosa, Kibbee, South
Thompson, Rock Springs and Normantown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately.

&&

LAT...LON 3214 8220 3212 8220 3203 8258 3208 8262
      3210 8261 3213 8263 3216 8261 3218 8263
      3222 8263 3235 8247 3235 8241 3238 8233
      3236 8225 3235 8225 3235 8224 3223 8221
      3216 8218
TIME...MOT...LOC 0854Z 240DEG 28KT 3211 8262 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...<30 MPH

$$

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 18, 7:24 PM ESTSpecial Weather StatementFFCBaldwin, Bibb, Jones36 min
Dec 18, 9:04 PM ESTSpecial Weather StatementFFCBleckley, Wilkinson26 min
Dec 19, 3:18 AM ESTSpecial Weather StatementFFCMontgomery, Telfair, Wheeler42 min
Dec 19, 5:13 AM ESTRiver Flood WarningFFCJones4 hr

Nearby

Special Weather Statements in Georgia, 2021Every special weather statement 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.