Alert archive / Georgia / Special Weather Statements in 2018

Special Weather Statement, NWS Atlanta, GA

July 25, 2018Morgan County, Georgia

NWS Atlanta, GA issued this special weather statement at Jul 25, 2018, 8:21 PM EDT for Morgan 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 25, 2018, 8:21 PM EDT (00:21 UTC)
Expired
Jul 25, 2018, 8:45 PM EDT
In force
24 min
Issued by
NWS Atlanta, GA
Wind
40

County Morgan County, GA

The radar

The Atlanta radar (KFFC), 97 km from the middle of the area, began a volume at 00:24 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, 0.4 hours before the alert went out and 91 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 2018-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 695 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, Peachtre/Fal Fld, GA at 00:00Z on 2018-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 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
695 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
1574 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
22 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

758 
WWUS82 KFFC 260021
SPSFFC

Special Weather Statement
National Weather Service Peachtree City GA
821 PM EDT WED JUL 25 2018
 
GAZ049-060-260045-
Morgan GA-Putnam GA-
821 PM EDT WED JUL 25 2018

...SIGNIFICANT WEATHER ADVISORY FOR MORGAN AND NORTHWESTERN PUTNAM
COUNTIES UNTIL 845 PM EDT...

At 820 PM EDT...a strong thunderstorm was over Rutledge, or 7 miles
west of Madison...moving southeast at 10 mph.

  HAZARD...Up to 40 mph wind...frequent cloud to ground lightning 
           and heavy rain.

  IMPACT...Expect minor damage to tree limbs and blowing around of 
           light...unsecured objects. Heavy rain may cause temporary 
           street flooding especially in poor drainage areas.

Some locations in the path of this storm include
Madison, Rutledge, Buckhead, Godfrey, Hard Labor Creek State Park and
Parks Mill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People outdoors should seek shelter immediately. If you can hear
thunder...you are close enough to be struck by lightning. Motorists
should slow down and be prepared for possible loss of control due to
hydroplaning.

LAT...LON 3339 8346 3353 8368 3357 8368 3358 8369
      3359 8369 3369 8361 3370 8359 3353 8328
      3351 8328
TIME...MOT...LOC 0020Z 311DEG 9KT 3359 8360 

WIND...40MPH

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 26, 3:49 PM EDTSpecial Weather StatementFFCCrisp41 min
Jul 26, 5:23 PM EDTSpecial Weather StatementFFCLaurens52 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.