Alert archive / Georgia / Special Weather Statements in 2018

Special Weather Statement, NWS Tallahassee, FL

August 10, 2018Decatur County, Georgia

NWS Tallahassee, FL issued this special weather statement at Aug 10, 2018, 8:12 PM EDT for Decatur County, Georgia. It was in force for 33 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 10, 2018, 8:12 PM EDT (00:12 UTC)
Expired
Aug 10, 2018, 8:45 PM EDT
In force
33 min
Issued by
NWS Tallahassee, FL

County Decatur County, GA

The radar

The Tallahassee radar (KTLH), 60 km from the middle of the area, began a volume at 00:12 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

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 0.2 hours before the alert went out and 61 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, Tallahassee Rgnl, FL at 00:00Z on 2018-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2490 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, Tallahassee Rgnl, FL at 00:00Z on 2018-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 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
2490 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
931 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

677 
WWUS82 KTAE 110012
SPSTAE

Special Weather Statement
National Weather Service Tallahassee FL
812 PM EDT FRI AUG 10 2018
 
GAZ156-110045-
Decatur GA-
812 PM EDT FRI AUG 10 2018

...SIGNIFICANT WEATHER ADVISORY FOR DECATUR COUNTY UNTIL 845
PM EDT...

At 812 PM EDT, Doppler radar was tracking a strong thunderstorm near
West Bainbridge, or near Bainbridge, moving east at 25 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Bainbridge, West Bainbridge, Attapulgus, Climax, Hanover, Ausmac,
Fowlstown, Cyrene, Eldorendo, Decatur Co A/P and Steinham Store.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3101 8438 3084 8438 3073 8445 3086 8475
      3106 8469
TIME...MOT...LOC 0012Z 286DEG 22KT 3095 8464 

$$

42-DVD

The office that day

Everything else NWS Tallahassee, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 10, 8:59 PM EDTSpecial Weather StatementTAEGadsden31 min
Aug 10, 9:53 PM EDTSpecial Weather StatementTAEJefferson52 min
Aug 11, 4:15 AM EDTRip Current StatementTAEBay, Gulf20 hr
Aug 10, 8:02 PM EDTSevere Thunderstorm WarningTAEBen Hill, Berrien, Irwin, Tift, Worth46 min
Aug 10, 8:18 PM EDTSevere Thunderstorm WarningTAEDecatur42 min

Nearby

Special Weather Statements in Georgia, 2018Every special weather statement in 2018

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.