Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 303, NWS Atlanta, GA

July 24, 2017Washington County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 24, 2017, 4:25 PM EDT for Washington County, Georgia. It was in force for 50 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 24, 2017, 4:25 PM EDT (20:25 UTC)
Expired
Jul 24, 2017, 5:15 PM EDT
In force
50 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Washington County, GA

The radar

The Robins AFB radar (KJGX), 61 km from the middle of the area, began a volume at 20:24 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 12:00Z, 8.4 hours before the alert went out and 155 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 12:00Z on 2017-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1248 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 12:00Z on 2017-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 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
1248 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
731 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
25 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

142 
WUUS52 KFFC 242025
SVRFFC
GAC303-242115-
/O.NEW.KFFC.SV.W.0303.170724T2025Z-170724T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
425 PM EDT MON JUL 24 2017

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Central Washington County in east central Georgia...

* Until 515 PM EDT

* At 424 PM EDT, a severe thunderstorm was located near Deepstep, 
  moving east at 5 mph.

  HAZARD...60 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees. 

* Locations impacted include...
  Sandersville, Tennille, Deepstep and Warthen. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

If you see wind damage, hail or flooding, wait until the storm has 
passed and then call the National Weather Service toll free at 1 8 6 
6 7 6 3 4 4 6 6, or tweet us your report at NWSATLANTA.

&&

LAT...LON 3286 8269 3289 8295 3308 8302 3308 8301
      3310 8299 3311 8296 3311 8295 3313 8290
      3315 8288 3319 8281 3306 8269
TIME...MOT...LOC 2024Z 258DEG 5KT 3301 8289 

HAIL...1.00IN
WIND...60MPH
 
$$
1 follow-up statement
892 
WWUS52 KFFC 242106
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
506 PM EDT MON JUL 24 2017

GAC303-242115-
/O.EXP.KFFC.SV.W.0303.000000T0000Z-170724T2115Z/
Washington GA-
506 PM EDT MON JUL 24 2017

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL WASHINGTON COUNTY WILL
EXPIRE AT 515 PM EDT...
                
The storm which prompted the warning has weakened below severe 
limits and no longer poses an immediate threat to life or property, 
therefore, the warning will be allowed to expire. However small 
hail, gusty winds and heavy rain are still likely with this 
thunderstorm.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Peachtree City.

LAT...LON 3286 8269 3289 8295 3308 8302 3308 8301
      3310 8299 3311 8296 3311 8295 3313 8290
      3315 8288 3319 8281 3306 8269
TIME...MOT...LOC 2105Z 258DEG 5KT 3302 8283 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 8:20 PM EDTSpecial Weather StatementFFCGreene, Oglethorpe25 min
Jul 23, 8:46 PM EDTSpecial Weather StatementFFCGreene, Oconee, Oglethorpe, Taliaferro, Wilkes29 min
Jul 23, 8:55 PM EDTSevere Thunderstorm WarningFFCGreene, Oglethorpe50 min
Jul 23, 9:21 PM EDTSevere Thunderstorm WarningFFCGreene, Hancock, Taliaferro, Warren39 min
Jul 23, 9:56 PM EDTSevere Thunderstorm WarningFFCGlascock, Warren49 min
Jul 23, 10:36 PM EDTSpecial Weather StatementFFCWashington24 min
Jul 23, 10:38 PM EDTRiver Flood WarningFFCGwinnett24 hr
Jul 23, 11:28 PM EDTSpecial Weather StatementFFCGilmer32 min
Jul 24, 2:55 PM EDTSpecial Weather StatementFFCBaldwin, Jones, Monroe50 min
Jul 24, 3:06 PM EDTSpecial Weather StatementFFCGlascock39 min
Jul 24, 3:08 PM EDTSpecial Weather StatementFFCDeKalb52 min
Jul 24, 3:14 PM EDTSpecial Weather StatementFFCJasper46 min
Jul 24, 3:34 PM EDTSpecial Weather StatementFFCPolk26 min
Jul 24, 3:46 PM EDTSpecial Weather StatementFFCButts, Jasper44 min
Jul 24, 3:49 PM EDTSpecial Weather StatementFFCGlascock, Jefferson41 min
Jul 24, 3:58 PM EDTSpecial Weather StatementFFCCoweta47 min
Jul 24, 4:09 PM EDTSpecial Weather StatementFFCHenry51 min
Jul 24, 4:18 PM EDTSpecial Weather StatementFFCFayette42 min
Jul 24, 4:22 PM EDTSevere Thunderstorm WarningFFCButts, Henry, Newton38 min
Jul 24, 4:51 PM EDTSpecial Weather StatementFFCClayton, Fayette, Henry, Spalding39 min
Jul 24, 4:56 PM EDTSpecial Weather StatementFFCJohnson, Washington49 min
Jul 24, 5:15 PM EDTFlash Flood WarningFFCHenry6 hr
Jul 24, 5:31 PM EDTSpecial Weather StatementFFCPike, Upson44 min
Jul 24, 5:35 PM EDTSpecial Weather StatementFFCLamar40 min
Jul 24, 6:13 PM EDTSpecial Weather StatementFFCUpson47 min
Jul 24, 6:25 PM EDTSpecial Weather StatementFFCHarris, Talbot35 min
Jul 24, 7:01 PM EDTFlash Flood WarningFFCHarris, Meriwether, Talbot, Taylor, Upson6 hr
Jul 24, 7:06 PM EDTSpecial Weather StatementFFCCrawford, Harris, Macon, Peach, Talbot, Taylor39 min
Jul 24, 7:38 PM EDTSpecial Weather StatementFFCCrawford, Houston, Macon, Peach, Schley, Taylor37 min
Jul 24, 7:44 PM EDTSpecial Weather StatementFFCSumter46 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2017Every severe thunderstorm warning 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.