Alert archive / Alabama / Tornado Warnings in 2021
Tornado Warning 10, NWS Birmingham, AL
NWS Birmingham, AL issued this tornado warning at Mar 17, 2021, 1:52 PM CDT for 4 counties in Alabama. It was in force for 41 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
- Mar 17, 2021, 1:52 PM CDT (18:52 UTC)
- Expired
- Mar 17, 2021, 2:33 PM CDT
- In force
- 41 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Greene County, AL, Hale County, AL, Marengo County, AL, Sumter County, AL
The radar
The Birmingham radar (KBMX), 110 km from the middle of the area, began a volume at 18:56 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 |
|---|---|---|---|
| Mar 17, 2:03 PM CDT | TORNADO | 2 Ese Mcdowell, AL | A NWS SURVEY TEAM CONFIRMED A BRIEF EF0 TORNADO THAT CROSSED LOCK AND DAM ROAD JUST WEST OF FOSCUE PARK, OUTSIDE OF THE CITY OF DEMOPOLIS. DAMAGE CONSISTED OF UPROOTED TREES, LARGE TREE BRANCHES BROKEN, AND SOME PANELING PULLED FROM A BUILDING ADJACENT TO FOSC |
| Mar 17, 2:05 PM CDT | TORNADO | 2 Wnw Demopolis, AL | TORNADO OBSERVED VIA TV STATION WEBCAM BROADCAST WITH POWER FLASH AND STORM CHASER DRONE VIDEO. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 17, 11:36 AM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 6.9 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
- 658 J/kg
- Mixed-layer CIN
- -112 J/kg
- Mixed-layer LCL
- 759 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 169 m²/s²
- 0-3 km storm-relative helicity
- 301 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.1
The text
As transmitted.
370
WFUS54 KBMX 171852
TORBMX
ALC063-065-091-119-172000-
/O.NEW.KBMX.TO.W.0010.210317T1852Z-210317T2000Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Birmingham AL
152 PM CDT Wed Mar 17 2021
The National Weather Service in Birmingham has issued a
* Tornado Warning for...
North central Marengo County in southwestern Alabama...
Southeastern Greene County in west central Alabama...
Southern Hale County in west central Alabama...
Southeastern Sumter County in west central Alabama...
* Until 300 PM CDT.
* At 152 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Jefferson, or near Demopolis, moving northeast at
35 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* Locations impacted include...
Demopolis, Greensboro, Forkland, Greensboro Municipal Airport,
Duffys Bend, Sawyerville, Arcola, U.S. 80 and AL 28, Demopolis Lock
And Dam, McDowell, Birdine, Cedarville and Demopolis Municipal
Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3280 8768 3271 8747 3238 8792 3247 8803
TIME...MOT...LOC 1852Z 226DEG 30KT 3246 8794
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
32/Davis2 follow-up statements
224
WWUS54 KBMX 171917
SVSBMX
Severe Weather Statement
National Weather Service Birmingham AL
217 PM CDT Wed Mar 17 2021
ALC091-119-171926-
/O.CAN.KBMX.TO.W.0010.000000T0000Z-210317T2000Z/
Marengo AL-Sumter AL-
217 PM CDT Wed Mar 17 2021
...THE TORNADO WARNING FOR NORTH CENTRAL MARENGO AND SOUTHEASTERN
SUMTER COUNTIES IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. However, additional tornado warnings are in
effect for Marengo County.
A Tornado Watch remains in effect until 700 PM CDT for central,
southwestern and west central Alabama.
LAT...LON 3261 8788 3260 8786 3259 8786 3260 8784
3262 8787 3280 8768 3271 8747 3252 8773
3252 8782 3254 8782 3255 8784 3253 8786
3254 8787 3257 8787 3260 8790
TIME...MOT...LOC 1916Z 223DEG 23KT 3257 8782
$$
ALC063-065-172000-
/O.CON.KBMX.TO.W.0010.000000T0000Z-210317T2000Z/
Greene AL-Hale AL-
217 PM CDT Wed Mar 17 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 300 PM CDT FOR
SOUTHEASTERN GREENE AND SOUTHERN HALE COUNTIES...
At 216 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Arcola, or near Demopolis, moving northeast at 25
mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Greensboro, Forkland, Duffys Bend, Sawyerville, Arcola, Greensboro
Municipal Airport, Birdine and Cedarville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3261 8788 3260 8786 3259 8786 3260 8784
3262 8787 3280 8768 3271 8747 3252 8773
3252 8782 3254 8782 3255 8784 3253 8786
3254 8787 3257 8787 3260 8790
TIME...MOT...LOC 1916Z 223DEG 23KT 3257 8782
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
32/Davis643
WWUS54 KBMX 171933
SVSBMX
Severe Weather Statement
National Weather Service Birmingham AL
233 PM CDT Wed Mar 17 2021
ALC063-065-171942-
/O.CAN.KBMX.TO.W.0010.000000T0000Z-210317T2000Z/
Greene AL-Hale AL-
233 PM CDT Wed Mar 17 2021
...THE TORNADO WARNING FOR SOUTHEASTERN GREENE AND SOUTHERN HALE
COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 700 PM CDT for central,
southwestern and west central Alabama.
LAT...LON 3261 8788 3260 8786 3259 8786 3260 8784
3262 8787 3280 8768 3271 8747 3252 8773
3252 8782 3254 8782 3255 8784 3253 8786
3254 8787 3257 8787 3260 8790
TIME...MOT...LOC 1930Z 226DEG 30KT 3267 8770
$$
32/DavisThe office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 16, 9:59 PM CDT | Special Weather Statement | BMX | Sumter | 46 min |
| Mar 16, 10:11 PM CDT | Severe Thunderstorm Warning | BMX | Sumter | 24 min |
| Mar 16, 10:38 PM CDT | Special Weather Statement | BMX | Hale | 37 min |
| Mar 17, 1:27 AM CDT | Dense Fog Advisory | BMX | Autauga, Barbour, Blount, Bullock, Calhoun, Chambers and 22 more | 6 hr |
| Mar 17, 11:18 AM CDT | Special Weather Statement | BMX | Jefferson | 27 min |
| Mar 17, 12:13 PM CDT | Tornado Warning | BMX | Dallas | 47 min |
| Mar 17, 12:19 PM CDT | Areal Flood Advisory | BMX | Jefferson, Tuscaloosa | 2 hr |
| Mar 17, 12:21 PM CDT | Severe Thunderstorm Warning | BMX | Fayette, Lamar, Marion | 25 min |
| Mar 17, 12:41 PM CDT | Tornado Warning | BMX | Autauga | 64 min |
| Mar 17, 12:59 PM CDT | Tornado Warning | BMX | Greene, Sumter | 61 min |
| Mar 17, 1:18 PM CDT | Tornado Warning | BMX | Autauga, Chilton, Elmore | 57 min |
| Mar 17, 1:40 PM CDT | Severe Thunderstorm Warning | BMX | Pickens, Tuscaloosa | 28 min |
| Mar 17, 1:58 PM CDT | Tornado Warning | BMX | Marengo | 62 min |
| Mar 17, 1:59 PM CDT | Tornado Warning | BMX | Greene, Hale | 46 min |
| Mar 17, 2:02 PM CDT | Tornado Warning | BMX | Chilton, Coosa | 58 min |
| Mar 17, 2:09 PM CDT | Tornado Warning | BMX | Marengo | 66 min |
| Mar 17, 2:14 PM CDT | Tornado Warning | BMX | Jefferson, Walker | 61 min |
| Mar 17, 2:20 PM CDT | Tornado Warning | BMX | Tuscaloosa | 40 min |
| Mar 17, 2:33 PM CDT | Tornado Warning | BMX | Clay, Coosa, Talladega | 42 min |
| Mar 17, 2:44 PM CDT | Flash Flood Warning | BMX | Hale, Marengo, Perry | 2 hr |
| Mar 17, 2:47 PM CDT | Areal Flood Advisory | BMX | Greene, Pickens, Sumter, Tuscaloosa | 2 hr |
| Mar 17, 2:48 PM CDT | Areal Flood Advisory | BMX | Blount, Jefferson, Walker | 2 hr |
| Mar 17, 2:48 PM CDT | Areal Flood Advisory | BMX | Fayette, Lamar, Marion, Walker, Winston | 2 hr |
| Mar 17, 2:51 PM CDT | Flash Flood Warning | BMX | Jefferson | 2 hr |
| Mar 17, 2:53 PM CDT | Tornado Warning | BMX | Tuscaloosa | 52 min |
| Mar 17, 2:54 PM CDT | Tornado Warning | BMX | Dallas, Marengo, Perry | 66 min |
| Mar 17, 2:58 PM CDT | Tornado Warning | BMX | Blount, Jefferson | 34 min |
| Mar 17, 3:21 PM CDT | Tornado Warning | BMX | Tuscaloosa | 54 min |
| Mar 17, 3:25 PM CDT | Flash Flood Warning | BMX | Tuscaloosa | 2 hr |
| Mar 17, 3:28 PM CDT | Areal Flood Advisory | BMX | Dallas, Perry | 2 hr |
| Mar 17, 3:34 PM CDT | Tornado Warning | BMX | Jefferson, Walker | 56 min |
| Mar 17, 3:37 PM CDT | Tornado Warning | BMX | Marengo | 38 min |
| Mar 17, 3:58 PM CDT | Tornado Warning | BMX | Jefferson | 47 min |
| Mar 17, 3:58 PM CDT | Tornado Warning | BMX | Dallas, Perry | 47 min |
| Mar 17, 4:12 PM CDT | Tornado Warning | BMX | Dallas | 48 min |
| Mar 17, 4:28 PM CDT | Tornado Warning | BMX | Marengo | 62 min |
| Mar 17, 4:36 PM CDT | Tornado Warning | BMX | Jefferson | 54 min |
| Mar 17, 4:40 PM CDT | Tornado Warning | BMX | Autauga | 50 min |
| Mar 17, 4:43 PM CDT | Tornado Warning | BMX | Dallas, Perry | 47 min |
| Mar 17, 5:00 PM CDT | Tornado Warning | BMX | Chilton | 60 min |
| Mar 17, 5:09 PM CDT | Areal Flood Advisory | BMX | Jefferson | 111 min |
| Mar 17, 5:15 PM CDT | Tornado Warning | BMX | Chilton | 60 min |
| Mar 17, 5:16 PM CDT | Tornado Warning | BMX | Blount | 44 min |
| Mar 17, 5:23 PM CDT | Tornado Warning | BMX | Dallas, Marengo, Perry | 67 min |
| Mar 17, 5:26 PM CDT | Areal Flood Advisory | BMX | Autauga, Chilton, Dallas, Hale, Marengo, Perry and 1 more | 3 hr |
| Mar 17, 5:41 PM CDT | Tornado Warning | BMX | Marengo | 23 min |
| Mar 17, 5:42 PM CDT | Tornado Warning | BMX | Chilton, Coosa, Shelby, Talladega | 48 min |
| Mar 17, 5:48 PM CDT | Tornado Warning | BMX | Blount | 42 min |
| Mar 17, 5:56 PM CDT | Areal Flood Advisory | BMX | Walker, Winston | 44 min |
| Mar 17, 6:09 PM CDT | Tornado Warning | BMX | Chilton, Coosa, Shelby, Talladega | 13 min |
| Mar 17, 6:40 PM CDT | Flash Flood Warning | BMX | Walker, Winston | 3 hr |
| Mar 17, 6:48 PM CDT | Tornado Warning | BMX | Dallas | 42 min |
Nearby
Tornado Warnings in Alabama, 2021Every tornado warning in 2021Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.