Alert archive / Georgia / Tornado Watches in 2021
Tornado Watch 38
The Storm Prediction Center issued this tornado watch at Mar 17, 2021, 11:02 PM CDT for 6 counties in Alabama; 9 counties in Florida; 44 counties in Georgia. It was in force for 9 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 17, 2021, 11:02 PM CDT (04:02 UTC)
- Expired
- Mar 18, 2021, 8:00 AM CDT
- In force
- 9 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 65 kt
All 59 counties
Coffee County, AL, Covington County, AL, Dale County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Bay County, FL, Calhoun County, FL, Escambia County, FL, Holmes County, FL, Jackson County, FL, Okaloosa County, FL, Santa Rosa County, FL, Walton County, FL, Washington County, FL, Baker County, GA, Bibb County, GA, Butts County, GA, Calhoun County, GA, Carroll County, GA, Chattahoochee County, GA, Clay County, GA, Coweta County, GA, Crawford County, GA, Crisp County, GA, Dooly County, GA, Dougherty County, GA, Douglas County, GA, Early County, GA, Fayette County, GA, Haralson County, GA, Harris County, GA, Heard County, GA, Houston County, GA, Lamar County, GA, Lee County, GA, Macon County, GA, Marion County, GA, Meriwether County, GA, Miller County, GA, Monroe County, GA, Muscogee County, GA, Paulding County, GA, Peach County, GA, Pike County, GA, Polk County, GA, Quitman County, GA, Randolph County, GA, Schley County, GA, Seminole County, GA, Spalding County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Taylor County, GA, Terrell County, GA, Troup County, GA, Upson County, GA, Webster County, GA
The radar
The Maxwell AFB radar (KMXX), 92 km from the middle of the area, began a volume at 04:07 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
- 50%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 30%
- 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
- 90%
Warnings issued inside it
16 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 11:12 PM CDT | Severe Thunderstorm Warning | FFC | Bartow, Chattooga, Floyd, Gordon, Haralson, Paulding and 1 more | 48 min |
| Mar 17, 11:23 PM CDT | Flash Flood Warning | FFC | Bartow, Catoosa, Chattooga, Dade, Floyd, Gordon and 4 more | 7 hr |
| Mar 18, 4:29 AM CDT | Severe Thunderstorm Warning | TAE | Geneva | 61 min |
| Mar 18, 5:04 AM CDT | Severe Thunderstorm Warning | TAE | Coffee, Dale, Henry, Houston | 56 min |
| Mar 18, 5:26 AM CDT | Tornado Warning | TAE | Dale, Henry, Houston | 49 min |
| Mar 18, 5:40 AM CDT | Severe Thunderstorm Warning | TAE | Bay, Walton, Washington | 64 min |
| Mar 18, 6:01 AM CDT | Severe Thunderstorm Warning | TAE | Henry, Houston | 59 min |
| Mar 18, 6:02 AM CDT | Tornado Warning | TAE | Bay, Washington | 28 min |
| Mar 18, 6:05 AM CDT | Tornado Warning | TAE | Bay, Calhoun, Gulf | 40 min |
| Mar 18, 6:15 AM CDT | Tornado Warning | TAE | Henry | 30 min |
| Mar 18, 6:19 AM CDT | Severe Thunderstorm Warning | TAE | Bay, Calhoun, Franklin, Gulf, Holmes, Jackson and 2 more | 86 min |
| Mar 18, 6:32 AM CDT | Tornado Warning | TAE | Early | 43 min |
| Mar 18, 6:48 AM CDT | Tornado Warning | TAE | Bay, Gulf | 27 min |
| Mar 18, 6:55 AM CDT | Severe Thunderstorm Warning | TAE | Baker, Calhoun, Clay, Dougherty, Early, Quitman and 2 more | 65 min |
| Mar 18, 7:19 AM CDT | Severe Thunderstorm Warning | TAE | Calhoun, Franklin, Gadsden, Gulf, Leon, Liberty and 1 more | 56 min |
| Mar 18, 7:24 AM CDT | Severe Thunderstorm Warning | TAE | Houston | 51 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 00:00Z, 4.0 hours before the alert went out and 126 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.
- Mixed-layer CAPE
- 11 J/kg
- Mixed-layer CIN
- -161 J/kg
- Mixed-layer LCL
- 466 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 404 m²/s²
- 0-3 km storm-relative helicity
- 444 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
The text
As transmitted.
011
WWUS20 KWNS 180358
SEL8
SPC WW 180358
ALZ000-FLZ000-GAZ000-CWZ000-181100-
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 38
NWS Storm Prediction Center Norman OK
1200 AM EDT Thu Mar 18 2021
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Southeast Alabama
Florida Panhandle
Western Georgia
Coastal Waters
* Effective this Thursday morning from Midnight until 700 AM EDT.
* Primary threats include...
A few tornadoes possible
Scattered damaging winds likely with isolated significant gusts
to 75 mph possible
Isolated large hail events to 1 inch in diameter possible
SUMMARY...Broken clusters of storms will steadily spread
east-northeastward across the region through the overnight hours. A
moist environment and increasingly strong low-level shear will
support the possibility of damaging winds and a few tornadoes.
The tornado watch area is approximately along and 70 statute miles
east and west of a line from 65 miles northeast of La Grange GA to
40 miles west of Panama City FL. For a complete depiction of the
watch see the associated watch outline update (WOUS64 KWNS WOU8).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 36...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1 inch. Extreme turbulence and surface wind
gusts to 65 knots. A few cumulonimbi with maximum tops to 450. Mean
storm motion vector 25040.
...GuyerSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 7:07 PM CDT | Tornado Watch | SPC | Colbert, Cullman, Franklin, Lauderdale, Lawrence, Limestone and 3 more | 3 hr |
| Mar 17, 9:16 PM CDT | Mesoscale Discussion | SPC | Cullman, DeKalb, Jackson, Limestone, Madison, Marshall and 1 more | 89 min |
| Mar 17, 10:15 PM CDT | Mesoscale Discussion | SPC | Baldwin, Barbour, Bullock, Calhoun, Chambers, Cherokee and 18 more | 90 min |
| Mar 18, 1:52 AM CDT | Mesoscale Discussion | SPC | Barbour, Coffee, Covington, Dale, Geneva, Henry and 2 more | 83 min |
| Mar 18, 4:28 AM CDT | Mesoscale Discussion | SPC | Coffee, Dale, Geneva, Henry, Houston | 92 min |
| Mar 18, 6:32 AM CDT | Mesoscale Discussion | SPC | Bay, Calhoun, Franklin, Gadsden, Gulf, Jackson and 6 more | 58 min |
| Mar 18, 6:53 AM CDT | Tornado Watch | SPC | Dixie, Franklin, Gadsden, Gulf, Jefferson, Lafayette and 5 more | 5 hr |
| Mar 18, 10:05 AM CDT | Mesoscale Discussion | SPC | Columbia, Dixie, Hamilton, Jefferson, Lafayette, Madison and 2 more | 115 min |
| Mar 18, 10:42 AM CDT | Tornado Watch | SPC | Alachua, Baker, Bradford, Clay, Columbia, Duval and 7 more | 6 hr |
| Mar 18, 9:34 AM CDT | Mesoscale Discussion | SPC | Banks, Barrow, Clarke, Elbert, Franklin, Habersham and 5 more | 2 hr |
| Mar 18, 1:08 PM CDT | Tornado Watch | SPC | Elbert, Lincoln | 4 hr |
| Mar 18, 2:10 PM CDT | Mesoscale Discussion | SPC | Elbert | 3 hr |
Nearby
Tornado Watches in Georgia, 2021Tornado Watches in Florida, 2021Tornado Watches in Alabama, 2021Every tornado watch in 2021
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.