Alert archive / Georgia / Special Weather Statements in 2017

Special Weather Statement, NWS Atlanta, GA

February 9, 2017Bibb County, Twiggs County, Wilkinson County, Georgia

NWS Atlanta, GA issued this special weather statement at Feb 9, 2017, 1:42 AM EST for Bibb County, Twiggs County, Wilkinson County, Georgia. It was in force for 48 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
Feb 9, 2017, 1:42 AM EST (06:42 UTC)
Expired
Feb 9, 2017, 2:30 AM EST
In force
48 min
Issued by
NWS Atlanta, GA
Wind
50

Counties Bibb County, GA, Twiggs County, GA, Wilkinson County, GA

The radar

The Robins AFB radar (KJGX), 13 km from the middle of the area, began a volume at 06:41 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, 6.7 hours before the alert went out and 119 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 2017-02-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 294 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, Peachtre/Fal Fld, GA at 00:00Z on 2017-02-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 297 square meters per square second.1939587897117Sfc1 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
294 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
739 m above ground
0-6 km bulk shear
75 kt
0-1 km storm-relative helicity
297 m²/s²
0-3 km storm-relative helicity
330 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.6

Open this sounding in Storm Lab

The text

As transmitted.

401 
WWUS82 KFFC 090642
SPSFFC

Special Weather Statement
National Weather Service Peachtree City GA
142 AM EST THU FEB 9 2017
 
GAZ072-081>084-094-095-090730-
Peach GA-Wilkinson GA-Bibb GA-Houston GA-Crawford GA-Jones GA-
Twiggs GA-
142 AM EST THU FEB 9 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN PEACH...SOUTHERN
WILKINSON...SOUTHERN BIBB...NORTHEASTERN HOUSTON...EASTERN
CRAWFORD...SOUTHERN JONES AND TWIGGS COUNTIES UNTIL 230 AM EST...

At 141 AM EST...a line of strong thunderstorms was extending from
Cross Keys to near Macon to near Jack Brown Estates...and moving east
at 45 mph.

  HAZARD...40 to 50 mph wind and enhanced risk for downed trees. 

  IMPACT...Expect minor damage to tree limbs and blowing around of 
           light...unsecured objects is expected. Trees can also 
           down more easily with already wet soil from previous 
           rainfall. 

Some locations in the path of these storms include
Macon, Jeffersonville, Irwinton, Warner Robins, Centerville, Byron,
Danville, Allentown, Robins Air Force Base, Marion, Tarversville,
Griswoldville, Nicklesville, District Path, Skipperton, Jack Brown
Estates, Bullard, Rutland, Fitzpatrick and Ripley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately.

LAT...LON 3271 8390 3281 8371 3290 8351 3275 8294
      3271 8296 3250 8340
TIME...MOT...LOC 0641Z 290DEG 40KT 3286 8356 3280 8368 3274 8380 

WIND...50MPH

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 8, 9:10 PM ESTSpecial Weather StatementFFCChattooga, Dade, Walker50 min
Feb 8, 10:16 PM ESTSpecial Weather StatementFFCBartow, Floyd29 min
Feb 8, 10:18 PM ESTSpecial Weather StatementFFCBartow, Floyd27 min
Feb 8, 10:24 PM ESTSevere Thunderstorm WarningFFCBartow, Floyd36 min
Feb 9, 1:10 AM ESTSpecial Weather StatementFFCHancock, Jasper, Putnam, Warren50 min
Feb 9, 1:20 AM ESTSpecial Weather StatementFFCCrawford, Peach, Taylor25 min
Feb 9, 2:15 AM ESTSpecial Weather StatementFFCBleckley, Dodge, Emanuel, Johnson, Laurens, Pulaski and 1 more30 min

Nearby

Special Weather Statements in Georgia, 2017Every special weather statement 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.