Alert archive / Alabama / Tornado Warnings in 2020

Tornado Warning 23, NWS Mobile, AL

April 19, 2020Clarke County, Alabama

NWS Mobile, AL issued this tornado warning at Apr 19, 2020, 5:57 PM CDT for Clarke 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
Apr 19, 2020, 5:57 PM CDT (22:57 UTC)
Expired
Apr 19, 2020, 6:45 PM CDT
In force
48 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Clarke County, AL

The radar

The Mobile radar (KMOB), 143 km from the middle of the area, began a volume at 22:59 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.

IssuedProductOfficeLasted
Apr 19, 3:56 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 11.0 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-pSkew-T log-p diagram, Jackson, MS at 12:00Z on 2020-04-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 776 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, Jackson, MS at 12:00Z on 2020-04-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 323 square meters per square second.19395878Sfc1 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
776 J/kg
Mixed-layer CIN
-84 J/kg
Mixed-layer LCL
610 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
323 m²/s²
0-3 km storm-relative helicity
329 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.7

Open this sounding in Storm Lab

The text

As transmitted.

599 
WFUS54 KMOB 192257
TORMOB
ALC025-192345-
/O.NEW.KMOB.TO.W.0023.200419T2257Z-200419T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mobile AL
557 PM CDT Sun Apr 19 2020

The National Weather Service in Mobile has issued a

* Tornado Warning for...
  North central Clarke County in southwestern Alabama...

* Until 645 PM CDT.
    
* At 557 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 6 miles southwest of Putnam, or 8 miles southeast of
  Butler, moving east 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...
  Thomasville around 635 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 3199 8767 3189 8767 3192 8808 3192 8807
      3193 8805 3194 8807 3192 8809 3196 8810
      3196 8809 3195 8808 3196 8807 3198 8807
      3198 8806 3199 8807
TIME...MOT...LOC 2257Z 278DEG 33KT 3199 8813 

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

$$
2 follow-up statements
149 
WWUS54 KMOB 192324
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
624 PM CDT Sun Apr 19 2020

ALC025-192345-
/O.CON.KMOB.TO.W.0023.000000T0000Z-200419T2345Z/
Clarke AL-
624 PM CDT Sun Apr 19 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR NORTHERN
CLARKE COUNTY...

At 624 PM CDT, tornado located 8 miles southeast of Putnam, or 11
miles west of Thomasville, moving east at 40 mph.

HAZARD...Tornado and 70 mph wind gusts.

SOURCE...Radar indicated.

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.

Locations impacted include...
Thomasville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3199 8767 3189 8767 3190 8785 3199 8782
TIME...MOT...LOC 2324Z 276DEG 37KT 3194 8793 

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

$$

JLH
141 
WWUS54 KMOB 192342
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
642 PM CDT Sun Apr 19 2020

ALC025-192352-
/O.EXP.KMOB.TO.W.0023.000000T0000Z-200419T2345Z/
Clarke AL-
642 PM CDT Sun Apr 19 2020

...THE TORNADO WARNING FOR NORTHERN CLARKE COUNTY WILL EXPIRE AT 645
PM CDT...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning will be allowed to expire.

A Tornado Watch remains in effect until 1100 PM CDT for southwestern
Alabama.

LAT...LON 3199 8767 3189 8767 3190 8785 3199 8782
TIME...MOT...LOC 2342Z 278DEG 33KT 3192 8776 

$$

JLH

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 19, 4:01 AM CDTSmall Craft AdvisoryMOB7 hr
Apr 19, 11:24 AM CDTSmall Craft AdvisoryMOB23 hr
Apr 19, 2:15 PM CDTSpecial Marine WarningMOB2 hr
Apr 19, 3:24 PM CDTSevere Thunderstorm WarningMOBChoctaw51 min
Apr 19, 3:50 PM CDTSevere Thunderstorm WarningMOBCrenshaw14 min
Apr 19, 3:58 PM CDTSevere Thunderstorm WarningMOBButler, Crenshaw47 min
Apr 19, 4:15 PM CDTSevere Thunderstorm WarningMOBChoctaw45 min
Apr 19, 4:29 PM CDTTornado WarningMOBChoctaw46 min
Apr 19, 5:00 PM CDTSevere Thunderstorm WarningMOBChoctaw, Clarke60 min
Apr 19, 5:40 PM CDTTornado WarningMOBChoctaw23 min
Apr 19, 6:14 PM CDTSevere Thunderstorm WarningMOBClarke31 min
Apr 19, 6:27 PM CDTTornado WarningMOBWilcox48 min
Apr 19, 6:32 PM CDTTornado WarningMOBClarke, Monroe43 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.