Alert archive / Alabama / Tornado Warnings in 2020

Tornado Warning 4, NWS Mobile, AL

February 10, 2020Clarke County, Washington County, Alabama

NWS Mobile, AL issued this tornado warning at Feb 10, 2020, 7:28 PM CST for Clarke County, Washington County, Alabama. It was in force for 19 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: Feb 10, 2020, 7:28 PM CST (01:28 UTC)
Expired: Feb 10, 2020, 7:47 PM CST
In force: 19 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Clarke County, AL, Washington County, AL

The radar

The Mobile radar (KMOB), 115 km from the middle of the area, began a volume at 01:31 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 nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 1.5 hours before the alert went out and 201 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: 10 J/kg
Mixed-layer CIN: -253 J/kg
Mixed-layer LCL: 449 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: -145 m²/s²
0-3 km storm-relative helicity: 115 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

326 
WFUS54 KMOB 110128
TORMOB
ALC025-129-110200-
/O.NEW.KMOB.TO.W.0004.200211T0128Z-200211T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mobile AL
728 PM CST Mon Feb 10 2020

The National Weather Service in Mobile has issued a

* Tornado Warning for...
  Northeastern Washington County in southwestern Alabama...
  West central Clarke County in southwestern Alabama...

* Until 800 PM CST.
    
* At 728 PM CST, a severe thunderstorm capable of producing a tornado
  was located 6 miles northwest of Saint Stephens, or 14 miles
  northeast of Chatom, moving east 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 tornadic thunderstorm will remain over mainly rural areas of
  northeastern Washington and west central Clarke Counties.

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 3172 8781 3162 8780 3157 8812 3167 8816
      3170 8811 3170 8809 3171 8809 3178 8792
TIME...MOT...LOC 0128Z 253DEG 28KT 3163 8810 

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

$$

Black

2 follow-up statements

509 
WWUS54 KMOB 110141
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
741 PM CST Mon Feb 10 2020

ALC129-110150-
/O.CAN.KMOB.TO.W.0004.000000T0000Z-200211T0200Z/
Washington AL-
741 PM CST Mon Feb 10 2020

...THE TORNADO WARNING FOR NORTHEASTERN WASHINGTON COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 3166 8780 3163 8803 3167 8807 3171 8809
      3177 8791 3172 8781
TIME...MOT...LOC 0140Z 253DEG 28KT 3166 8799 

$$

ALC025-110200-
/O.CON.KMOB.TO.W.0004.000000T0000Z-200211T0200Z/
Clarke AL-
741 PM CST Mon Feb 10 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM CST FOR WEST
CENTRAL CLARKE COUNTY...
    
At 740 PM CST, a severe thunderstorm capable of producing a tornado
was located 8 miles northeast of Saint Stephens, or 11 miles
northwest of Jackson, moving east at 30 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 tornadic thunderstorm will remain over mainly rural areas of
west central Clarke County.

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 3166 8780 3163 8803 3167 8807 3171 8809
      3177 8791 3172 8781
TIME...MOT...LOC 0140Z 253DEG 28KT 3166 8799 

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

$$
Black

201 
WWUS54 KMOB 110147
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
747 PM CST Mon Feb 10 2020

ALC025-110156-
/O.CAN.KMOB.TO.W.0004.000000T0000Z-200211T0200Z/
Clarke AL-
747 PM CST Mon Feb 10 2020

...THE TORNADO WARNING FOR WEST CENTRAL CLARKE 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.  However gusty winds are
still possible with this thunderstorm.

LAT...LON 3166 8780 3163 8803 3167 8807 3171 8809
      3177 8791 3172 8781
TIME...MOT...LOC 0145Z 253DEG 28KT 3168 8793 

$$

Black

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 10, 6:39 PM CST	Special Weather Statement	MOB	Washington	36 min
Feb 10, 6:47 PM CST	Severe Thunderstorm Warning	MOB	Choctaw, Clarke, Washington	43 min
Feb 10, 7:05 PM CST	Tornado Warning	MOB	Clarke, Washington	25 min
Feb 10, 7:45 PM CST	Special Weather Statement	MOB	Clarke, Monroe	30 min
Feb 10, 8:01 PM CST	Severe Thunderstorm Warning	MOB	Clarke	44 min
Feb 10, 8:35 PM CST	Special Weather Statement	MOB	Monroe	40 min
Feb 10, 8:42 PM CST	Areal Flood Advisory	MOB	Clarke, Wilcox	2 hr
Feb 11, 2:59 PM CST	Dense Fog Advisory	MOB	Baldwin, Covington, Escambia, Mobile	18 hr

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.