Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 307, NWS Atlanta, GA

July 26, 20176 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 26, 2017, 4:44 PM EDT for 6 counties in Georgia. It was in force for 46 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 26, 2017, 4:44 PM EDT (20:44 UTC)
Expired: Jul 26, 2017, 5:30 PM EDT
In force: 46 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Crawford County, GA, Houston County, GA, Macon County, GA, Peach County, GA, Taylor County, GA, Twiggs County, GA

The radar

The Robins AFB radar (KJGX), 33 km from the middle of the area, began a volume at 20:46 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.

What was reported inside it

Time	Report	Where	Remark
Jul 26, 5:10 PM EDT	TSTM WND DMG	1 Wnw Myrtle, GA	POWER LINES DOWN WERE REPORTED AT US HWY 341 AND NORWOOD SPRINGS RD
Jul 26, 5:10 PM EDT	TSTM WND DMG	Fort Valley, GA	DOWNED POWER LINES HAVE BEEN REPORTED AT N. MILLER ST AND PERSONS ST IN FORT VALLEY

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 8.7 hours before the alert went out and 118 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 752 J/kg
Mixed-layer CIN: -74 J/kg
Mixed-layer LCL: 1155 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 42 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

323 
WUUS52 KFFC 262044
SVRFFC
GAC079-153-193-225-269-289-262130-
/O.NEW.KFFC.SV.W.0307.170726T2044Z-170726T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
444 PM EDT WED JUL 26 2017

The National Weather Service in Peachtree City has issued a

* Severe Thunderstorm Warning for...
  Northeastern Macon County in west central Georgia...
  Southwestern Twiggs County in central Georgia...
  Peach County in central Georgia...
  Central Crawford County in central Georgia...
  Houston County in central Georgia...
  East central Taylor County in west central Georgia...

* Until 530 PM EDT

* At 443 PM EDT, severe thunderstorms were located along a line
  extending from near Sandy Point to Powerville to near Bonaire,
  moving southwest at 15 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to roofs, siding, and trees. 

* Locations impacted include...
  Perry, Fort Valley, Warner Robins, Centerville, Byron,
  Marshallville, Reynolds, Robins Air Force Base, Nakomis,
  Meadowdale, Houston Lake, Powerville, Moss Oak, Horns, Miami
  Valley, Kathleen, Saint Louis, Jack Brown Estates, Sand Bed and
  Lakewood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 3258 8418 3280 8387 3273 8381 3272 8376
      3269 8374 3268 8364 3267 8360 3267 8359
      3260 8343 3247 8346 3245 8350 3244 8349
      3241 8348 3239 8350 3240 8352 3239 8354
      3239 8392
TIME...MOT...LOC 2043Z 029DEG 14KT 3272 8392 3262 8378 3255 8352 

HAIL...<.75IN
WIND...60MPH
 
$$

1 follow-up statement

744 
WWUS52 KFFC 262059
SVSFFC

Severe Weather Statement
National Weather Service Peachtree City GA
459 PM EDT WED JUL 26 2017

GAC079-153-193-225-269-289-262130-
/O.CON.KFFC.SV.W.0307.000000T0000Z-170726T2130Z/
Macon GA-Twiggs GA-Peach GA-Crawford GA-Houston GA-Taylor GA-
459 PM EDT WED JUL 26 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR NORTHEASTERN MACON...SOUTHWESTERN TWIGGS...PEACH...SOUTHEASTERN
CRAWFORD...CENTRAL HOUSTON AND EAST CENTRAL TAYLOR COUNTIES...

At 459 PM EDT, severe thunderstorms were located along a line
extending from near Horns to Miami Valley to near Kathleen, moving
southwest at 15 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Perry, Fort Valley, Warner Robins, Centerville, Byron, Marshallville,
Reynolds, Robins Air Force Base, Saint Louis, Nakomis, Meadowdale,
Sand Bed, Houston Lake, Lakewood, Powerville, Moss Oak, Lee Pope,
Horns, Bonaire and Winchester.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 3273 8397 3266 8386 3266 8380 3264 8374
      3261 8366 3260 8361 3260 8356 3256 8346
      3247 8346 3245 8350 3244 8349 3241 8348
      3239 8350 3240 8352 3239 8354 3239 8392
      3258 8418
TIME...MOT...LOC 2059Z 029DEG 14KT 3268 8395 3258 8381 3251 8355 

HAIL...<.75IN
WIND...60MPH
 
$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 2:15 PM EDT	Special Weather Statement	FFC	Baldwin, Putnam	30 min
Jul 26, 2:44 PM EDT	Special Weather Statement	FFC	Jones	46 min
Jul 26, 3:33 PM EDT	Special Weather Statement	FFC	Bibb	42 min
Jul 26, 3:48 PM EDT	Special Weather Statement	FFC	Glascock	42 min
Jul 26, 4:01 PM EDT	Special Weather Statement	FFC	Hancock, Warren	44 min
Jul 26, 4:24 PM EDT	Special Weather Statement	FFC	Bibb, Peach	51 min
Jul 26, 4:31 PM EDT	Special Weather Statement	FFC	Glascock	44 min
Jul 26, 5:01 PM EDT	Special Weather Statement	FFC	Glascock, Greene, Hancock, Jefferson, Taliaferro, Warren	44 min
Jul 26, 5:07 PM EDT	Severe Thunderstorm Warning	FFC	Greene, Hancock, Taliaferro	38 min
Jul 26, 5:26 PM EDT	Special Weather Statement	FFC	Taylor	49 min
Jul 26, 5:31 PM EDT	Severe Thunderstorm Warning	FFC	Morgan, Walton	44 min
Jul 26, 6:16 PM EDT	Severe Thunderstorm Warning	FFC	Butts, Henry, Jasper, Morgan, Newton	44 min
Jul 26, 6:48 PM EDT	Special Weather Statement	FFC	Sumter, Webster	57 min
Jul 26, 7:02 PM EDT	Special Weather Statement	FFC	Butts	43 min
Jul 26, 7:27 PM EDT	Special Weather Statement	FFC	Cherokee, Pickens	48 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2017 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.