Alert archive / Georgia / Special Weather Statements in 2014

Special Weather Statement, NWS Atlanta, GA

July 19, 2014Montgomery County, Georgia

NWS Atlanta, GA issued this special weather statement at Jul 19, 2014, 3:21 PM EDT for Montgomery County, Georgia. It was in force for 24 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
Jul 19, 2014, 3:21 PM EDT (19:21 UTC)
Expired
Jul 19, 2014, 3:45 PM EDT
In force
24 min
Issued by
NWS Atlanta, GA

County Montgomery County, GA

The radar

The Robins AFB radar (KJGX), 110 km from the middle of the area, began a volume at 19:21 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 12:00Z, 7.4 hours before the alert went out and 181 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 12:00Z on 2014-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 499 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 12:00Z on 2014-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 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
499 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
897 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
23 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

832 
WWUS82 KFFC 191921
SPSFFC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
321 PM EDT SAT JUL 19 2014

GAZ111>113-191945-
321 PM EDT SAT JUL 19 2014

...SIGNIFICANT WEATHER ADVISORY FOR HEAVY RAIN AND FREQUENT 
LIGHTNING IN WHEELER...TOOMBS AND MONTGOMERY COUNTIES UNTIL
345 PM EDT...

AT 317 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 6 MILES SOUTHWEST OF CHARLOTTEVILLE...MOVING
NORTHEAST AT 20 MPH.

THIS STORM HAS THE POTENTIAL TO PRODUCE FREQUENT CLOUD TO GROUND 
LIGHTNING AND WIND GUSTS TO 35 MPH AS IT MOVES ACROSS 
WHEELER...TOOMBS AND MONTGOMERY COUNTIES THROUGH 345 PM EDT. SOME 
LOCATIONS IN THE PATH OF THIS STORM INCLUDE CHARLOTTEVILLE...MCNATT 
FALLS...UVALDA...GRAYS LANDING AND ALSTON. HEAVY DOWNPOURS WILL CAUSE
PONDING OF WATER ON ROADWAYS.

SIGNIFICANT WEATHER ADVISORIES ARE ISSUED FOR WINDS UP TO 50 
MPH...HAIL LESS THAN THE SIZE OF QUARTERS...SIGNIFICANT 
CLOUD-TO-GROUND LIGHTNING OR HEAVY RAIN.

&&

LAT...LON 3199 8265 3210 8247 3196 8240 3195 8243
      3196 8248 3195 8248 3194 8250 3195 8252
      3195 8256 3192 8262
TIME...MOT...LOC 1921Z 243DEG 16KT 3197 8259

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 6:13 AM EDTSpecial Weather StatementFFCClayton, DeKalb47 min
Jul 19, 6:59 AM EDTSpecial Weather StatementFFCClayton, DeKalb61 min
Jul 19, 7:55 AM EDTSpecial Weather StatementFFCClayton, DeKalb, Fulton, Gwinnett65 min
Jul 19, 12:37 PM EDTSpecial Weather StatementFFCWarren8 min
Jul 19, 12:48 PM EDTSpecial Weather StatementFFCMcDuffie27 min
Jul 19, 1:17 PM EDTSpecial Weather StatementFFCTwiggs43 min
Jul 19, 1:18 PM EDTSpecial Weather StatementFFCTwiggs42 min
Jul 19, 1:42 PM EDTSpecial Weather StatementFFCWilkinson33 min
Jul 19, 2:12 PM EDTSpecial Weather StatementFFCWashington48 min
Jul 19, 3:12 PM EDTSpecial Weather StatementFFCTreutlen33 min
Jul 19, 4:43 PM EDTSpecial Weather StatementFFCNewton47 min
Jul 19, 6:46 PM EDTSpecial Weather StatementFFCClayton, Fayette, Rockdale29 min
Jul 19, 7:16 PM EDTSpecial Weather StatementFFCClayton29 min
Jul 19, 7:38 PM EDTFlash Flood WarningFFCClayton, Henry6 hr
Jul 19, 7:48 PM EDTSpecial Weather StatementFFCRockdale27 min

Nearby

Special Weather Statements in Georgia, 2014Every special weather statement in 2014

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.