Alert archive / Georgia / Severe Thunderstorm Watches in 2017

Severe Thunderstorm Watch 117

April 3, 201798 counties in Georgia

The Storm Prediction Center issued this severe thunderstorm watch at Apr 3, 2017, 10:50 AM EDT for 98 counties in Georgia. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Apr 3, 2017, 10:50 AM EDT (14:50 UTC)
Expired: Apr 3, 2017, 5:54 PM EDT
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 1.5 in
Strongest gust expected: 60 kt

All 98 counties

Baker County, GA, Baldwin County, GA, Barrow County, GA, Ben Hill County, GA, Berrien County, GA, Bibb County, GA, Bleckley County, GA, Brooks County, GA, Butts County, GA, Calhoun County, GA, Carroll County, GA, Chattahoochee County, GA, Clarke County, GA, Clay County, GA, Clayton County, GA, Cobb County, GA, Colquitt County, GA, Cook County, GA, Coweta County, GA, Crawford County, GA, Crisp County, GA, Decatur County, GA, DeKalb County, GA, Dodge County, GA, Dooly County, GA, Dougherty County, GA, Douglas County, GA, Early County, GA, Emanuel County, GA, Fayette County, GA, Fulton County, GA, Glascock County, GA, Grady County, GA, Greene County, GA, Gwinnett County, GA, Hancock County, GA, Harris County, GA, Heard County, GA, Henry County, GA, Houston County, GA, Irwin County, GA, Jackson County, GA, Jasper County, GA, Jefferson County, GA, Johnson County, GA, Jones County, GA, Lamar County, GA, Lanier County, GA, Laurens County, GA, Lee County, GA, Lowndes County, GA, Macon County, GA, Madison County, GA, Marion County, GA, Meriwether County, GA, Miller County, GA, Mitchell County, GA, Monroe County, GA, Montgomery County, GA, Morgan County, GA, Muscogee County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Peach County, GA, Pike County, GA, Pulaski County, GA, Putnam County, GA, Quitman County, GA, Randolph County, GA, Rockdale County, GA, Schley County, GA, Seminole County, GA, Spalding County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Taliaferro County, GA, Taylor County, GA, Telfair County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Toombs County, GA, Treutlen County, GA, Troup County, GA, Turner County, GA, Twiggs County, GA, Upson County, GA, Walton County, GA, Warren County, GA, Washington County, GA, Webster County, GA, Wheeler County, GA, Wilcox County, GA, Wilkes County, GA, Wilkinson County, GA, Worth County, GA

The radar

The Robins AFB radar (KJGX), 66 km from the middle of the area, began a volume at 14:52 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 SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes: 20%
One or more EF2 to EF5 tornadoes: 2%
Ten or more severe wind reports: 40%
One or more gusts of 65 knots or more: 10%
Ten or more severe hail reports: 20%
One or more hailstones of 2 inches or more: 5%
Six or more combined severe hail and wind reports: 60%

Warnings issued inside it

56 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Apr 3, 10:52 AM EDT	Severe Thunderstorm Warning	FFC	Carroll	23 min
Apr 3, 10:57 AM EDT	Tornado Warning	FFC	Carroll	33 min
Apr 3, 11:13 AM EDT	Severe Thunderstorm Warning	FFC	Carroll, Douglas, Paulding	32 min
Apr 3, 11:21 AM EDT	Severe Thunderstorm Warning	FFC	Coweta, Meriwether, Troup	24 min
Apr 3, 11:23 AM EDT	Severe Thunderstorm Warning	FFC	Hancock, Taliaferro, Warren	34 min
Apr 3, 11:27 AM EDT	Severe Thunderstorm Warning	FFC	Douglas, Fulton	33 min
Apr 3, 11:28 AM EDT	Severe Thunderstorm Warning	TAE	Clay, Quitman	47 min
Apr 3, 11:32 AM EDT	Severe Thunderstorm Warning	FFC	Cobb, DeKalb, Douglas, Fulton	28 min
Apr 3, 11:33 AM EDT	Severe Thunderstorm Warning	FFC	Chattahoochee, Harris, Marion, Muscogee	27 min
Apr 3, 11:35 AM EDT	Tornado Warning	FFC	Fulton	25 min
Apr 3, 11:39 AM EDT	Tornado Warning	FFC	Chattahoochee, Harris, Marion, Muscogee, Talbot	36 min
Apr 3, 11:41 AM EDT	Severe Thunderstorm Warning	FFC	Greene, Taliaferro, Wilkes	16 min
Apr 3, 11:50 AM EDT	Severe Thunderstorm Warning	FFC	Clayton, Cobb, DeKalb, Douglas, Fulton	25 min
Apr 3, 11:51 AM EDT	Severe Thunderstorm Warning	TAE	Decatur	39 min
Apr 3, 11:56 AM EDT	Severe Thunderstorm Warning	FFC	Stewart, Webster	34 min
Apr 3, 12:07 PM EDT	Tornado Warning	FFC	Stewart, Webster	23 min
Apr 3, 12:12 PM EDT	Severe Thunderstorm Warning	FFC	Talbot, Taylor, Upson	33 min
Apr 3, 12:26 PM EDT	Tornado Warning	FFC	Crawford, Monroe, Talbot, Taylor, Upson	34 min
Apr 3, 12:28 PM EDT	Severe Thunderstorm Warning	TAE	Early, Miller, Seminole	47 min
Apr 3, 12:30 PM EDT	Tornado Warning	FFC	Macon, Marion, Schley, Sumter, Taylor, Webster	30 min
Apr 3, 12:32 PM EDT	Tornado Warning	FFC	Butts, Henry, Spalding	28 min
Apr 3, 12:53 PM EDT	Severe Thunderstorm Warning	FFC	Butts, Henry, Jasper, Newton	37 min
Apr 3, 12:55 PM EDT	Severe Thunderstorm Warning	FFC	Lamar, Monroe	35 min
Apr 3, 12:59 PM EDT	Severe Thunderstorm Warning	FFC	Crawford, Macon, Peach, Schley, Taylor	31 min
Apr 3, 12:59 PM EDT	Severe Thunderstorm Warning	TAE	Baker, Calhoun, Dougherty, Early, Miller	46 min
Apr 3, 1:04 PM EDT	Tornado Warning	FFC	Jasper, Jones, Lamar, Monroe	26 min
Apr 3, 1:18 PM EDT	Severe Thunderstorm Warning	TAE	Baker, Decatur, Miller, Mitchell	42 min
Apr 3, 1:22 PM EDT	Tornado Warning	FFC	Bibb, Crawford, Houston, Peach, Twiggs	23 min
Apr 3, 1:22 PM EDT	Severe Thunderstorm Warning	TAE	Baker, Dougherty, Lee, Mitchell, Terrell, Worth	38 min
Apr 3, 1:28 PM EDT	Severe Thunderstorm Warning	FFC	Houston, Macon, Peach	47 min
Apr 3, 1:31 PM EDT	Severe Thunderstorm Warning	FFC	Greene, Morgan, Oconee, Walton	44 min
Apr 3, 1:32 PM EDT	Severe Thunderstorm Warning	FFC	Baldwin, Bibb, Jasper, Jones, Putnam, Twiggs and 1 more	28 min
Apr 3, 1:36 PM EDT	Severe Thunderstorm Warning	FFC	Greene, Jasper, Morgan, Putnam	39 min
Apr 3, 1:41 PM EDT	Tornado Warning	FFC	Baldwin, Jasper, Jones, Putnam	34 min
Apr 3, 1:53 PM EDT	Severe Thunderstorm Warning	FFC	Bibb, Bleckley, Dodge, Houston, Laurens, Pulaski and 2 more	37 min
Apr 3, 1:54 PM EDT	Severe Thunderstorm Warning	TAE	Dougherty, Lee, Mitchell, Tift, Turner, Worth	66 min
Apr 3, 1:58 PM EDT	Severe Thunderstorm Warning	FFC	Crisp, Dodge, Dooly, Pulaski, Wilcox	47 min
Apr 3, 2:00 PM EDT	Tornado Warning	FFC	Laurens, Twiggs, Wilkinson	45 min
Apr 3, 2:03 PM EDT	Severe Thunderstorm Warning	FFC	Baldwin, Hancock, Jones, Putnam, Twiggs, Washington and 1 more	42 min
Apr 3, 2:07 PM EDT	Severe Thunderstorm Warning	FFC	Greene, Hancock, Madison, Oconee, Oglethorpe, Taliaferro and 1 more	38 min
Apr 3, 2:24 PM EDT	Tornado Warning	FFC	Hancock, Taliaferro, Warren	39 min
Apr 3, 2:24 PM EDT	Tornado Warning	FFC	Baldwin, Washington, Wilkinson	36 min
Apr 3, 2:28 PM EDT	Severe Thunderstorm Warning	TAE	Ben Hill, Irwin, Turner	47 min
Apr 3, 2:32 PM EDT	Severe Thunderstorm Warning	FFC	Bleckley, Dodge, Laurens, Pulaski, Telfair, Wheeler and 1 more	43 min
Apr 3, 2:39 PM EDT	Tornado Warning	FFC	Johnson, Laurens, Washington, Wilkinson	24 min
Apr 3, 2:50 PM EDT	Severe Thunderstorm Warning	FFC	Glascock, Hancock, Jefferson, Taliaferro, Warren, Washington and 1 more	25 min
Apr 3, 3:00 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel, Glascock, Jefferson, Johnson, Laurens, Washington	30 min
Apr 3, 3:07 PM EDT	Tornado Warning	FFC	Jefferson, Washington	23 min
Apr 3, 3:10 PM EDT	Severe Thunderstorm Warning	FFC	Dodge, Laurens, Montgomery, Telfair, Toombs, Treutlen and 1 more	50 min
Apr 3, 3:29 PM EDT	Severe Thunderstorm Warning	FFC	Montgomery, Telfair, Toombs, Wheeler	46 min
Apr 3, 3:31 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel, Jefferson, Johnson	29 min
Apr 3, 3:42 PM EDT	Severe Thunderstorm Warning	TAE	Decatur, Grady, Thomas	33 min
Apr 3, 3:49 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel, Montgomery, Toombs, Treutlen	26 min
Apr 3, 4:13 PM EDT	Severe Thunderstorm Warning	TAE	Grady, Thomas	32 min
Apr 3, 4:38 PM EDT	Severe Thunderstorm Warning	TAE	Brooks, Lowndes, Thomas	37 min
Apr 3, 5:08 PM EDT	Severe Thunderstorm Warning	TAE	Brooks, Lanier, Lowndes	37 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 2.8 hours before the alert went out and 85 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: 26 J/kg
Mixed-layer CIN: -350 J/kg
Mixed-layer LCL: 987 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 317 m²/s²
0-3 km storm-relative helicity: 392 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 3, 10:07 AM EDT	Mesoscale Discussion	SPC	Baldwin, Banks, Barrow, Bibb, Bleckley, Bulloch and 54 more	83 min
Apr 3, 10:25 AM EDT	Mesoscale Discussion	SPC	Baker, Butts, Calhoun, Carroll, Chattahoochee, Clay and 30 more	65 min
Apr 3, 1:42 PM EDT	Mesoscale Discussion	SPC	Appling, Bryan, Bulloch, Burke, Candler, Columbia and 24 more	63 min
Apr 3, 2:07 PM EDT	Tornado Watch	SPC	Appling, Atkinson, Bacon, Baldwin, Bleckley, Bryan and 45 more	6 hr
Apr 3, 6:41 PM EDT	Mesoscale Discussion	SPC	Chatham, McIntosh	64 min

Nearby

Severe Thunderstorm Watches in Georgia, 2017 Every severe thunderstorm watch 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.