Alert archive / Alabama / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 59, NWS Mobile, AL

April 10, 20215 counties in Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Apr 10, 2021, 4:33 AM CDT for 5 counties in Alabama. It was in force for 57 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: Apr 10, 2021, 4:33 AM CDT (09:33 UTC)
Expired: Apr 10, 2021, 5:30 AM CDT
In force: 57 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Butler County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Escambia County, AL

The radar

The Ft Rucker radar (KEOX), 86 km from the middle of the area, began a volume at 09:36 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
Apr 10, 2:30 AM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 9.6 hours before the alert went out and 171 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: 53 J/kg
Mixed-layer CIN: -225 J/kg
Mixed-layer LCL: 744 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 182 m²/s²
0-3 km storm-relative helicity: 294 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

As transmitted.

667 
WUUS54 KMOB 100933
SVRMOB
ALC013-035-039-041-053-101030-
/O.NEW.KMOB.SV.W.0059.210410T0933Z-210410T1030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mobile AL
433 AM CDT Sat Apr 10 2021

The National Weather Service in Mobile has issued a

* Severe Thunderstorm Warning for...
  Butler County in south central Alabama...
  Crenshaw County in south central Alabama...
  Eastern Escambia County in south central Alabama...
  Southeastern Conecuh County in south central Alabama...
  Covington County in south central Alabama...

* Until 530 AM CDT.

* At 432 AM CDT, severe thunderstorms were located along a line
  extending from 3 miles southwest of Logan to 5 miles north of Red
  Level to 15 miles southeast of Castleberry, moving east at 50 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Andalusia, Greenville, Opp, Luverne, Georgiana, Brantley, McKenzie,
  River Falls, Red Level, Rutledge, Dozier, Heath, Gantt, Glenwood,
  Petrey and Highland Home.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 AM CDT for south central
Alabama.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3153 8620 3102 8619 3102 8701 3147 8683
      3196 8669 3196 8641 3205 8640 3205 8630
      3197 8630 3196 8619 3190 8617 3179 8620
      3179 8615 3166 8615 3162 8618 3162 8615
      3154 8614
TIME...MOT...LOC 0932Z 247DEG 42KT 3194 8651 3149 8660 3120 8679 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
 
$$

Black

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 9:31 PM CDT	River Flood Warning	MOB	Mobile	63 hr
Apr 10, 1:06 AM CDT	Severe Thunderstorm Warning	MOB	Choctaw	54 min
Apr 10, 1:15 AM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Washington	45 min
Apr 10, 1:33 AM CDT	Special Marine Warning	MOB		87 min
Apr 10, 1:58 AM CDT	Severe Thunderstorm Warning	MOB	Choctaw, Clarke, Washington, Wilcox	62 min
Apr 10, 2:22 AM CDT	Special Weather Statement	MOB	Mobile	68 min
Apr 10, 2:35 AM CDT	Severe Thunderstorm Warning	MOB	Mobile	25 min
Apr 10, 2:43 AM CDT	Severe Thunderstorm Warning	MOB	Mobile	17 min
Apr 10, 2:50 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin	55 min
Apr 10, 2:59 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Butler, Clarke, Conecuh, Escambia, Mobile and 3 more	61 min
Apr 10, 3:36 AM CDT	Special Marine Warning	MOB		114 min
Apr 10, 3:53 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Butler, Conecuh, Covington, Escambia, Mobile and 2 more	67 min
Apr 10, 4:07 AM CDT	Areal Flood Advisory	MOB	Baldwin, Escambia, Mobile	3 hr
Apr 10, 4:53 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Covington, Escambia	52 min
Apr 10, 5:10 AM CDT	Areal Flood Advisory	MOB	Baldwin	3 hr
Apr 10, 5:28 AM CDT	Special Marine Warning	MOB		2 hr
Apr 10, 5:40 AM CDT	Flash Flood Warning	MOB	Baldwin	6 hr
Apr 10, 5:44 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Covington, Escambia	61 min
Apr 10, 5:53 AM CDT	Flash Flood Warning	MOB	Mobile	6 hr
Apr 10, 6:04 AM CDT	Special Marine Warning	MOB		86 min
Apr 10, 6:20 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin, Mobile	40 min
Apr 10, 6:48 AM CDT	Special Marine Warning	MOB		87 min
Apr 10, 6:52 AM CDT	Severe Thunderstorm Warning	MOB	Baldwin	53 min
Apr 10, 7:12 AM CDT	Special Marine Warning	MOB		63 min
Apr 10, 7:30 AM CDT	Special Marine Warning	MOB		90 min
Apr 10, 9:28 AM CDT	River Flood Warning	MOB	Baldwin	11 hr
Apr 10, 9:33 AM CDT	River Flood Warning	MOB	Baldwin	5 hr

Nearby

Severe Thunderstorm Warnings in Alabama, 2021 Every severe thunderstorm warning 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.