Alert archive / Alabama / Tornado Warnings in 2021

Tornado Warning 65, NWS Birmingham, AL

March 25, 2021Marengo County, Alabama

NWS Birmingham, AL issued this tornado warning at Mar 25, 2021, 7:07 PM CDT for Marengo County, Alabama. It was in force for 24 min. 3 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 25, 2021, 7:07 PM CDT (00:07 UTC)
Expired: Mar 25, 2021, 7:31 PM CDT
In force: 24 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Marengo County, AL

The radar

The Birmingham radar (KBMX), 156 km from the middle of the area, began a volume at 00:09 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 25, 7:12 PM CDT	TSTM WND DMG	3 Wnw Nanafalia, AL	SEVERAL TRAILERS DAMAGED AND TREES DOWN FROM RIVERVIEW LANE NEAR HIGHWAY 10 EASTWARD ACROSS HIGHWAY 69. POSSIBLE TORNADO.
Mar 25, 7:13 PM CDT	TORNADO	2 Ese Lavaca, AL	THE TORNADO FIRST TOUCHED DOWN JUST WEST OF THE TOMBIGBEE RIVER AND JUST SOUTH OF HIGHWAY 10 IN FAR EASTERN CHOCTAW COUNTY, AL. THE TORNADO INTENSIFIED RAPIDLY UPON TOUCHDOWN AND HEAVILY DAMAGED A SINGLE FAMILY HOME. THE HOME WAS SHIFTED NEARLY 6 FEET OFF OF T
Mar 25, 7:14 PM CDT	TORNADO	3 Wnw Nanafalia, AL	A TORNADO MOVED INTO MARENGO COUNTY FROM CHOCTAW COUNTY AND STRENGTHENED INTO AN EF2 TORNADO, DOWNING NUMEROUS TREES AND DAMAGING OR DESTROYING SEVERAL STRUCTURES.

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 25, 11:26 AM CDT	Tornado Watch PDS	SPC	9 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 0.1 hours before the alert went out and 156 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: 1313 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 662 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 341 m²/s²
0-3 km storm-relative helicity: 334 m²/s²
Significant tornado parameter: 3.1
Supercell composite: 13.2

Open this sounding in Storm Lab

The text

As transmitted.

994 
WFUS54 KBMX 260007
TORBMX
ALC091-260100-
/O.NEW.KBMX.TO.W.0065.210326T0007Z-210326T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Birmingham AL
707 PM CDT Thu Mar 25 2021

The National Weather Service in Birmingham has issued a

* Tornado Warning for...
  Central Marengo County in southwestern Alabama...

* Until 800 PM CDT.
    
* At 707 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Butler, moving northeast at 50 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...
  Linden, Sweet Water, Myrtlewood, Freddie Jones Field, Miller, Pin
  Hook, Nanafalia, Chickasaw State Park, Calvary, Half Acre and
  Octagon.

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 3207 8809 3208 8805 3208 8804 3211 8805
      3214 8804 3215 8802 3218 8801 3224 8802
      3226 8801 3228 8802 3231 8795 3230 8794
      3228 8794 3228 8793 3231 8793 3232 8794
      3241 8778 3215 8763 3206 8811
TIME...MOT...LOC 0007Z 246DEG 41KT 3210 8814 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

25/Owen

1 follow-up statement

816 
WWUS54 KBMX 260031
SVSBMX

Severe Weather Statement
National Weather Service Birmingham AL
731 PM CDT Thu Mar 25 2021

ALC091-260041-
/O.CAN.KBMX.TO.W.0065.000000T0000Z-210326T0100Z/
Marengo AL-
731 PM CDT Thu Mar 25 2021

...THE TORNADO WARNING FOR CENTRAL MARENGO COUNTY 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 800 PM CDT for southwestern
Alabama.

LAT...LON 3207 8809 3208 8805 3208 8804 3211 8805
      3214 8804 3215 8802 3218 8801 3224 8802
      3226 8801 3228 8802 3231 8795 3230 8794
      3228 8794 3228 8793 3231 8793 3232 8794
      3241 8778 3215 8763 3206 8811
TIME...MOT...LOC 0030Z 246DEG 41KT 3221 8786 

$$

25/Owen

The office that day

Everything else NWS Birmingham, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 25, 7:04 PM CDT	Special Weather Statement	BMX	Calhoun	26 min
Mar 25, 7:10 PM CDT	Special Weather Statement	BMX	Hale	50 min
Mar 25, 7:16 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Hale	32 min
Mar 25, 7:17 PM CDT	Areal Flood Advisory	BMX	Calhoun, Cherokee, Cleburne	14 min
Mar 25, 7:31 PM CDT	Flash Flood Warning	BMX	Calhoun, Cherokee, Cleburne	3 hr
Mar 25, 7:34 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Tuscaloosa	23 min
Mar 25, 7:48 PM CDT	Special Weather Statement	BMX	Jefferson	27 min
Mar 25, 8:28 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson, St. Clair	28 min
Mar 25, 8:33 PM CDT	Severe Thunderstorm Warning	BMX	Chilton	42 min
Mar 25, 8:51 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Etowah, St. Clair	25 min
Mar 25, 8:58 PM CDT	Severe Thunderstorm Warning	BMX	Coosa	49 min
Mar 25, 9:01 PM CDT	River Flood Warning	BMX	Bibb, Jefferson, Shelby	24 hr
Mar 25, 9:04 PM CDT	Tornado Warning	BMX	Chilton, Coosa	32 min
Mar 25, 9:21 PM CDT	River Flood Warning	BMX	Jefferson, Tuscaloosa, Walker	12 hr
Mar 25, 9:23 PM CDT	River Flood Warning	BMX	Jefferson, Tuscaloosa, Walker	60 hr
Mar 25, 9:41 PM CDT	River Flood Warning	BMX	Greene, Hale, Tuscaloosa	24 hr
Mar 25, 9:44 PM CDT	River Flood Warning	BMX	Greene, Hale, Marengo, Tuscaloosa	60 hr
Mar 25, 9:47 PM CDT	River Flood Warning	BMX	Sumter	12 hr
Mar 25, 9:49 PM CDT	River Flood Warning	BMX	Greene, Pickens, Sumter	5 days
Mar 25, 9:51 PM CDT	Tornado Warning	BMX	Chambers, Clay, Randolph, Tallapoosa	54 min
Mar 25, 11:20 PM CDT	Areal Flood Warning	BMX	Blount, Jefferson, St. Clair	6 hr
Mar 25, 11:55 PM CDT	River Flood Warning	BMX	Calhoun, Cherokee, Etowah, St. Clair	58 hr
Mar 26, 5:26 AM CDT	River Flood Warning	BMX	Chilton, Coosa, Elmore, Shelby, Talladega	4 days
Mar 26, 5:32 AM CDT	Areal Flood Warning	BMX	Cherokee	6 days

Nearby

Tornado Warnings in Alabama, 2021 Every tornado warning in 2021 Tornadoes 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.