Alert archive / Alabama / Tornado Warnings in 2021

Tornado Warning 2, NWS Mobile, AL

March 17, 2021Choctaw County, Alabama

NWS Mobile, AL issued this tornado warning at Mar 17, 2021, 1:12 PM CDT for Choctaw County, Alabama. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Mar 17, 2021, 1:12 PM CDT (18:12 UTC)
Expired: Mar 17, 2021, 2:00 PM CDT
In force: 48 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Choctaw County, AL

The radar

The Mobile radar (KMOB), 158 km from the middle of the area, began a volume at 18:15 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.

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 PDS	SPC	7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 6.2 hours before the alert went out and 174 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: 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

Open this sounding in Storm Lab

The text

As transmitted.

548 
WFUS54 KMOB 171812
TORMOB
ALC023-171900-
/O.NEW.KMOB.TO.W.0002.210317T1812Z-210317T1900Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mobile AL
112 PM CDT Wed Mar 17 2021

The National Weather Service in Mobile has issued a

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

* Until 200 PM CDT.
    
* At 111 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 6 miles west of Toxey, or 16 miles southwest of Butler,
  moving northeast at 40 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.

* This dangerous storm will be near...
  Toxey around 115 PM CDT.
  Butler around 135 PM CDT.
  Lisman around 140 PM CDT.
  Pennington around 155 PM CDT.

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 3220 8801 3215 8802 3214 8802 3215 8803
      3214 8804 3211 8805 3209 8804 3206 8807
      3207 8808 3207 8810 3206 8811 3203 8811
      3186 8840 3191 8847 3231 8832
TIME...MOT...LOC 1811Z 217DEG 35KT 3192 8842 

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

$$

1 follow-up statement

902 
WWUS54 KMOB 171828
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
128 PM CDT Wed Mar 17 2021

ALC023-171900-
/O.CON.KMOB.TO.W.0002.000000T0000Z-210317T1900Z/
Choctaw AL-
128 PM CDT Wed Mar 17 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 200 PM CDT FOR NORTHERN
CHOCTAW COUNTY...
    
At 127 PM CDT, a severe thunderstorm capable of producing a tornado
was located 6 miles southwest of Butler, 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.

This dangerous storm will be near...
  Butler around 135 PM CDT.
  Lisman around 140 PM CDT.
  Pennington around 155 PM CDT.

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 3220 8801 3215 8803 3214 8804 3212 8805
      3210 8805 3207 8808 3207 8810 3206 8811
      3205 8811 3204 8812 3197 8833 3201 8838
      3229 8825
TIME...MOT...LOC 1827Z 217DEG 32KT 3203 8831 

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

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 16, 9:23 PM CDT	Areal Flood Warning	MOB	Choctaw, Clarke, Washington, Wilcox	16 hr
Mar 16, 11:44 PM CDT	Special Weather Statement	MOB	Covington	46 min
Mar 17, 4:18 AM CDT	High Surf Advisory	MOB	Baldwin, Mobile	26 hr
Mar 17, 4:27 AM CDT	Flash Flood Watch	MOB	Choctaw, Clarke, Wilcox	18 hr
Mar 17, 10:36 AM CDT	River Flood Warning	MOB	Choctaw, Clarke, Washington	32 days
Mar 17, 10:39 AM CDT	River Flood Warning	MOB	Clarke, Washington	32 days
Mar 17, 11:58 AM CDT	Tornado Warning	MOB	Choctaw	47 min
Mar 17, 12:59 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw	46 min
Mar 17, 1:38 PM CDT	Tornado Warning	MOB	Choctaw	37 min
Mar 17, 2:05 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Clarke	40 min
Mar 17, 2:16 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw	44 min
Mar 17, 2:19 PM CDT	Flash Flood Warning	MOB	Choctaw, Clarke, Washington	6 hr
Mar 17, 2:34 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Clarke, Washington	56 min
Mar 17, 2:36 PM CDT	Tornado Warning	MOB	Clarke	39 min
Mar 17, 2:38 PM CDT	Tornado Warning	MOB	Choctaw	52 min
Mar 17, 3:28 PM CDT	Severe Thunderstorm Warning	MOB	Choctaw	47 min
Mar 17, 3:46 PM CDT	Tornado Warning	MOB	Choctaw	44 min
Mar 17, 3:55 PM CDT	Severe Thunderstorm Warning	MOB	Wilcox	20 min
Mar 17, 4:00 PM CDT	Tornado Warning	MOB	Wilcox	14 min
Mar 17, 4:04 PM CDT	Tornado Warning	MOB	Choctaw, Washington	26 min
Mar 17, 4:17 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	MOB	Choctaw, Clarke	43 min
Mar 17, 5:15 PM CDT	Severe Thunderstorm Warning	MOB	Clarke	30 min
Mar 17, 5:20 PM CDT	Tornado Warning	MOB	Clarke, Wilcox	40 min
Mar 17, 5:53 PM CDT	Tornado Warning	MOB	Wilcox	37 min
Mar 17, 5:54 PM CDT	Flash Flood Warning	MOB	Clarke, Wilcox	6 hr
Mar 17, 5:59 PM CDT	Severe Thunderstorm Warning	MOB	Clarke, Wilcox	46 min
Mar 17, 6:08 PM CDT	Tornado Warning	MOB	Wilcox	22 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.