Alert archive / Alabama / Tornado Warnings in 2020

Tornado Warning 70, NWS Mobile, AL

October 10, 2020Clarke County, Mobile County, Washington County, Alabama

NWS Mobile, AL issued this tornado warning at Oct 10, 2020, 5:57 AM CDT for Clarke County, Mobile County, Washington County, Alabama. It was in force for 12 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: Oct 10, 2020, 5:57 AM CDT (10:57 UTC)
Expired: Oct 10, 2020, 6:09 AM CDT
In force: 12 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Clarke County, AL, Mobile County, AL, Washington County, AL

The radar

The Mobile radar (KMOB), 61 km from the middle of the area, began a volume at 10:58 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
Oct 10, 4:00 AM CDT	Tornado Watch	SPC	10 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 11.0 hours before the alert went out and 196 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: 778 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 649 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 402 m²/s²
0-3 km storm-relative helicity: 470 m²/s²
Significant tornado parameter: 2.1
Supercell composite: 9.7

Open this sounding in Storm Lab

The text

As transmitted.

301 
WFUS54 KMOB 101057
TORMOB
ALC025-097-129-101130-
/O.NEW.KMOB.TO.W.0070.201010T1057Z-201010T1130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mobile AL
557 AM CDT Sat Oct 10 2020

The National Weather Service in Mobile has issued a

* Tornado Warning for...
  North central Mobile County in southwestern Alabama...
  Southeastern Washington County in southwestern Alabama...
  South central Clarke County in southwestern Alabama...

* Until 630 AM CDT.
    
* At 557 AM CDT, a severe thunderstorm capable of producing a tornado
  was located over Movico, or 11 miles east of Citronelle, moving
  north 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...
  Calvert around 605 AM CDT.
  McIntosh around 615 AM 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 3105 8807 3136 8804 3137 8795 3136 8786
      3133 8782 3115 8792 3116 8793 3116 8794
      3114 8793 3114 8794 3112 8795 3109 8797
      3107 8796 3103 8798
TIME...MOT...LOC 1057Z 191DEG 36KT 3107 8803 

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

$$

Black

1 follow-up statement

091 
WWUS54 KMOB 101109
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
609 AM CDT Sat Oct 10 2020

ALC025-097-129-101119-
/O.CAN.KMOB.TO.W.0070.000000T0000Z-201010T1130Z/
Mobile AL-Washington AL-Clarke AL-
609 AM CDT Sat Oct 10 2020

...THE TORNADO WARNING FOR NORTH CENTRAL MOBILE...SOUTHEASTERN
WASHINGTON AND SOUTH CENTRAL CLARKE 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 100 PM CDT for southwestern
Alabama.

LAT...LON 3105 8807 3136 8804 3137 8795 3136 8786
      3133 8782 3115 8792 3116 8793 3116 8794
      3114 8793 3114 8794 3112 8795 3109 8797
      3107 8796 3103 8798
TIME...MOT...LOC 1108Z 191DEG 36KT 3119 8800 

$$

Black

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 10, 1:36 AM CDT	Special Marine Warning	MOB		24 min
Oct 10, 3:26 AM CDT	Special Marine Warning	MOB		47 min
Oct 10, 4:43 AM CDT	Special Marine Warning	MOB		92 min
Oct 10, 4:53 AM CDT	Severe Thunderstorm Warning	MOB	Mobile	37 min
Oct 10, 5:00 AM CDT	Special Marine Warning	MOB		30 min
Oct 10, 5:00 AM CDT	Tornado Warning	MOB	Mobile	30 min
Oct 10, 5:17 AM CDT	Tornado Warning Tornado observed	MOB	Mobile	28 min
Oct 10, 5:21 AM CDT	Special Marine Warning	MOB		39 min
Oct 10, 5:28 AM CDT	Tornado Warning	MOB	Mobile	17 min
Oct 10, 5:42 AM CDT	Tornado Warning	MOB	Baldwin, Clarke, Mobile	18 min
Oct 10, 5:44 AM CDT	Tornado Warning	MOB	Baldwin	31 min
Oct 10, 6:01 AM CDT	Tornado Warning	MOB	Covington	44 min
Oct 10, 6:13 AM CDT	Special Marine Warning	MOB		2 hr
Oct 10, 9:03 AM CDT	Special Marine Warning	MOB		117 min
Oct 10, 9:10 AM CDT	River Flood Warning	MOB	Mobile	11 hr
Oct 10, 11:15 AM CDT	Special Marine Warning	MOB		90 min
Oct 10, 12:43 PM CDT	Special Marine Warning	MOB		92 min
Oct 10, 2:15 PM CDT	Special Marine Warning	MOB		60 min

Nearby

Tornado Warnings in Alabama, 2020 Every tornado warning in 2020 Tornadoes in 2020

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.