Alert archive / Georgia / Tornado Watches in 2021
Tornado Watch 107
The Storm Prediction Center issued this tornado watch at Apr 24, 2021, 10:35 AM EDT for 21 counties in Georgia. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 24, 2021, 10:35 AM EDT (14:35 UTC)
- Expired
- Apr 24, 2021, 6:00 PM EDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 21 counties
Appling County, GA, Atkinson County, GA, Bacon County, GA, Brantley County, GA, Bryan County, GA, Camden County, GA, Charlton County, GA, Chatham County, GA, Clinch County, GA, Coffee County, GA, Echols County, GA, Evans County, GA, Glynn County, GA, Jeff Davis County, GA, Liberty County, GA, Long County, GA, McIntosh County, GA, Pierce County, GA, Tattnall County, GA, Ware County, GA, Wayne County, GA
The radar
The Moody AFB radar (KVAX), 89 km from the middle of the area, began a volume at 14:35 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
- 20%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
20 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 24, 10:57 AM EDT | Severe Thunderstorm Warning | JAX | Atkinson, Clinch | 48 min |
| Apr 24, 11:15 AM EDT | Severe Thunderstorm Warning | JAX | Coffee | 45 min |
| Apr 24, 11:35 AM EDT | Severe Thunderstorm Warning | JAX | Bacon, Ware | 40 min |
| Apr 24, 11:54 AM EDT | Severe Thunderstorm Warning | JAX | Atkinson | 21 min |
| Apr 24, 12:04 PM EDT | Severe Thunderstorm Warning | JAX | Appling, Brantley, Pierce, Wayne | 41 min |
| Apr 24, 12:08 PM EDT | Tornado Warning | JAX | Bacon | 22 min |
| Apr 24, 12:18 PM EDT | Severe Thunderstorm Warning | JAX | Atkinson, Bacon, Clinch, Pierce, Ware | 31 min |
| Apr 24, 12:36 PM EDT | Severe Thunderstorm Warning | JAX | Wayne | 24 min |
| Apr 24, 12:44 PM EDT | Severe Thunderstorm Warning | CHS | Liberty, Long, McIntosh | 61 min |
| Apr 24, 1:29 PM EDT | Severe Thunderstorm Warning | CHS | Bryan, Chatham, Liberty, McIntosh | 61 min |
| Apr 24, 1:46 PM EDT | Severe Thunderstorm Warning | JAX | Clinch, Echols | 44 min |
| Apr 24, 2:15 PM EDT | Severe Thunderstorm Warning | JAX | Glynn | 15 min |
| Apr 24, 2:32 PM EDT | Severe Thunderstorm Warning | JAX | Clinch, Echols | 43 min |
| Apr 24, 2:36 PM EDT | Tornado Warning | JAX | Echols | 24 min |
| Apr 24, 2:56 PM EDT | Severe Thunderstorm Warning | JAX | Clinch, Echols | 49 min |
| Apr 24, 3:03 PM EDT | Tornado Warning | JAX | Clinch, Echols | 27 min |
| Apr 24, 3:30 PM EDT | Severe Thunderstorm Warning | JAX | Clinch, Echols, Ware | 45 min |
| Apr 24, 3:57 PM EDT | Severe Thunderstorm Warning | JAX | Charlton, Ware | 48 min |
| Apr 24, 4:10 PM EDT | Severe Thunderstorm Warning | JAX | Charlton | 28 min |
| Apr 24, 4:18 PM EDT | Severe Thunderstorm Warning | JAX | Camden | 42 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
Jacksonville, FL (KJAX), launched 12:00Z, 2.6 hours before the alert went out and 110 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 984 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 180 m²/s²
- 0-3 km storm-relative helicity
- 276 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
129 WWUS20 KWNS 241430 SEL7 SPC WW 241430 GAZ000-CWZ000-242200- URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 107 NWS Storm Prediction Center Norman OK 1035 AM EDT Sat Apr 24 2021 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Southeast Georgia Coastal Waters * Effective this Saturday morning and evening from 1035 AM until 600 PM EDT. * Primary threats include... A few tornadoes possible Scattered damaging wind gusts to 70 mph likely Scattered large hail events to 1 inch in diameter possible SUMMARY...A line of thunderstorms over south-central Georgia will continue tracking rapidly eastward across the watch area through the early and mid-afternoon. The strongest cells will pose a risk of damaging wind gusts and isolated tornadoes. The tornado watch area is approximately along and 40 statute miles north and south of a line from 35 miles west of Waycross GA to 20 miles east northeast of Brunswick GA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU7). 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 106... AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 26040. ...Hart
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 24, 6:22 AM EDT | Tornado Watch | SPC | Baker, Ben Hill, Berrien, Brooks, Calhoun, Clay and 20 more | 9 hr |
| Apr 24, 8:29 AM EDT | Mesoscale Discussion | SPC | Baker, Ben Hill, Berrien, Brooks, Calhoun, Clay and 19 more | 91 min |
| Apr 24, 10:10 AM EDT | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Ben Hill, Berrien, Brantley and 24 more | 95 min |
| Apr 24, 12:05 PM EDT | Mesoscale Discussion | SPC | Atkinson, Berrien, Brooks, Clinch, Colquitt, Cook and 10 more | 85 min |
| Apr 24, 2:22 PM EDT | Mesoscale Discussion | SPC | Chattooga, Dade, Floyd, Walker | 113 min |
| Apr 24, 4:00 PM EDT | Severe Thunderstorm Watch | SPC | Baker, Berrien, Brooks, Calhoun, Chattahoochee, Clay and 30 more | 6 hr |
| Apr 24, 4:35 PM EDT | Mesoscale Discussion | SPC | Camden, Charlton | 85 min |
| Apr 24, 5:52 PM EDT | Severe Thunderstorm Watch | SPC | Barrow, Bartow, Butts, Carroll, Chattooga, Cherokee and 26 more | 4 hr |
| Apr 24, 6:56 PM EDT | Mesoscale Discussion | SPC | Baker, Calhoun, Clay, Colquitt, Cook, Dougherty and 8 more | 94 min |
| Apr 24, 7:13 PM EDT | Mesoscale Discussion | SPC | Barrow, Bartow, Butts, Carroll, Chattooga, Cherokee and 31 more | 2 hr |
| Apr 24, 7:47 PM EDT | Mesoscale Discussion | SPC | Appling, Atkinson, Bacon, Berrien, Brantley, Bryan and 12 more | 118 min |
Nearby
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.