Alert archive / Alabama / Tornado Warnings in 2020

Tornado Warning 19, NWS Mobile, AL

April 12, 2020Clarke County, Monroe County, Wilcox County, Alabama

NWS Mobile, AL issued this tornado warning at Apr 12, 2020, 9:43 PM CDT for Clarke County, Monroe County, Wilcox County, Alabama. It was in force for 35 min. 1 report 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
Apr 12, 2020, 9:43 PM CDT (02:43 UTC)
Expired
Apr 12, 2020, 10:18 PM CDT
In force
35 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Clarke County, AL, Monroe County, AL, Wilcox County, AL

The radar

The Mobile radar (KMOB), 146 km from the middle of the area, began a volume at 02:46 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

TimeReportWhereRemark
Apr 12, 10:00 PM CDTTSTM WND DMGCamden, ALTREE DAMAGE TO MOBILE HOME REPORTED.

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.

IssuedProductOfficeLasted
Apr 12, 4:38 PM CDTTornado Watch PDSSPC7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 2.7 hours before the alert went out and 165 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-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2020-04-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 533 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 00:00Z on 2020-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 401 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
533 J/kg
Mixed-layer CIN
-55 J/kg
Mixed-layer LCL
847 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
401 m²/s²
0-3 km storm-relative helicity
509 m²/s²
Significant tornado parameter
1.4
Supercell composite
8.4

Open this sounding in Storm Lab

The text

As transmitted.

812 
WFUS54 KMOB 130243
TORMOB
ALC025-099-131-130330-
/O.NEW.KMOB.TO.W.0019.200413T0243Z-200413T0330Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mobile AL
943 PM CDT Sun Apr 12 2020

The National Weather Service in Mobile has issued a

* Tornado Warning for...
  North central Monroe County in south central Alabama...
  Northeastern Clarke County in southwestern Alabama...
  Southwestern Wilcox County in south central Alabama...

* Until 1030 PM CDT.
    
* At 942 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Fulton, or 7 miles south of Thomasville, moving
  northeast at 65 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...
  Yellow Bluff around 955 PM CDT.
  Camden around 1010 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 3174 8777 3184 8781 3208 8722 3183 8714
TIME...MOT...LOC 0242Z 242DEG 56KT 3181 8770 

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

$$
2 follow-up statements
979 
WWUS54 KMOB 130300
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
1000 PM CDT Sun Apr 12 2020

ALC025-130309-
/O.CAN.KMOB.TO.W.0019.000000T0000Z-200413T0330Z/
Clarke AL-
1000 PM CDT Sun Apr 12 2020

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

A Tornado Watch remains in effect until midnight CDT for south
central and southwestern Alabama.

LAT...LON 3208 8722 3183 8714 3178 8752 3181 8752
      3182 8750 3183 8750 3183 8759 3192 8760
TIME...MOT...LOC 0259Z 245DEG 56KT 3191 8740 

$$

ALC099-131-130330-
/O.CON.KMOB.TO.W.0019.000000T0000Z-200413T0330Z/
Monroe AL-Wilcox AL-
1000 PM CDT Sun Apr 12 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT FOR NORTH
CENTRAL MONROE AND SOUTHWESTERN WILCOX COUNTIES...
    
At 959 PM CDT, a severe thunderstorm capable of producing a tornado
was located 6 miles southeast of Yellow Bluff, or 8 miles southwest
of Camden, moving northeast at 65 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...
  Camden around 1005 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 3208 8722 3183 8714 3178 8752 3181 8752
      3182 8750 3183 8750 3183 8759 3192 8760
TIME...MOT...LOC 0259Z 245DEG 56KT 3191 8740 

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

$$
461 
WWUS54 KMOB 130318
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
1018 PM CDT Sun Apr 12 2020

ALC099-131-130327-
/O.CAN.KMOB.TO.W.0019.000000T0000Z-200413T0330Z/
Monroe AL-Wilcox AL-
1018 PM CDT Sun Apr 12 2020

...THE TORNADO WARNING FOR NORTH CENTRAL MONROE AND SOUTHWESTERN
WILCOX COUNTIES IS CANCELLED...
                
Rotation has weakened and the storm no longer appears capable of 
producing a tornado. Therefore, the tornado warning has been 
cancelled. 

A Tornado Watch remains in effect until midnight CDT for south
central and southwestern Alabama.

Remember, a Severe Thunderstorm Warning still remains in effect.

LAT...LON 3208 8722 3183 8714 3178 8752 3181 8752
      3182 8750 3183 8750 3183 8759 3192 8760
TIME...MOT...LOC 0315Z 242DEG 56KT 3204 8710 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 12, 8:46 PM CDTSevere Thunderstorm WarningMOBChoctaw, Clarke, Washington44 min
Apr 12, 8:58 PM CDTTornado WarningMOBChoctaw, Clarke, Washington47 min
Apr 12, 9:13 PM CDTSevere Thunderstorm WarningMOBChoctaw, Clarke, Monroe, Washington, Wilcox47 min
Apr 12, 9:30 PM CDTSevere Thunderstorm WarningMOBClarke, Washington45 min
Apr 12, 9:38 PM CDTTornado WarningMOBWilcox52 min
Apr 12, 9:43 PM CDTTornado WarningMOBWilcox32 min
Apr 12, 9:47 PM CDTSevere Thunderstorm WarningMOBMobile, Washington43 min
Apr 12, 10:04 PM CDTSevere Thunderstorm WarningMOBWashington41 min
Apr 12, 10:06 PM CDTSevere Thunderstorm WarningMOBClarke, Washington39 min
Apr 12, 10:14 PM CDTSevere Thunderstorm WarningMOBButler, Clarke, Monroe, Wilcox46 min
Apr 12, 10:32 PM CDTSevere Thunderstorm WarningMOBBaldwin, Clarke, Conecuh, Escambia, Mobile, Monroe and 1 more43 min
Apr 12, 10:34 PM CDTSevere Thunderstorm WarningMOBClarke, Conecuh, Monroe56 min
Apr 12, 10:59 PM CDTSpecial Weather StatementMOBWilcox46 min
Apr 12, 11:32 PM CDTSpecial Weather StatementMOBButler, Conecuh, Crenshaw, Monroe43 min
Apr 12, 11:58 PM CDTSevere Thunderstorm WarningMOBButler, Crenshaw47 min
Apr 13, 12:41 AM CDTSpecial Marine WarningMOB64 min
Apr 13, 1:12 AM CDTSpecial Weather StatementMOBCovington48 min
Apr 13, 1:58 AM CDTSpecial Marine WarningMOB62 min
Apr 13, 2:14 AM CDTSpecial Marine WarningMOB20 min
Apr 13, 2:52 AM CDTSpecial Marine WarningMOB68 min

Nearby

Tornado Warnings in Alabama, 2020Every tornado warning in 2020Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.