Alert archive / Mississippi / Tornado Warnings in 2020

Tornado Warning 42, NWS Mobile, AL

April 23, 2020George County, Stone County, Mississippi

NWS Mobile, AL issued this tornado warning at Apr 23, 2020, 6:40 AM CDT for George County, Stone County, Mississippi. It was in force for 24 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 23, 2020, 6:40 AM CDT (11:40 UTC)
Expired: Apr 23, 2020, 7:04 AM CDT
In force: 24 min
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties George County, MS, Stone County, MS

The radar

The Mobile radar (KMOB), 82 km from the middle of the area, began a volume at 11:39 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 23, 4:05 AM CDT	Tornado Watch	SPC	11 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 11.7 hours before the alert went out and 79 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: 8 J/kg
Mixed-layer CIN: -206 J/kg
Mixed-layer LCL: 885 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 337 m²/s²
0-3 km storm-relative helicity: 666 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

429 
WFUS54 KMOB 231140
TORMOB
MSC039-131-231230-
/O.NEW.KMOB.TO.W.0042.200423T1140Z-200423T1230Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mobile AL
640 AM CDT Thu Apr 23 2020

The National Weather Service in Mobile has issued a

* Tornado Warning for...
  Southwestern George County in southeastern Mississippi...
  Stone County in southeastern Mississippi...

* Until 730 AM CDT.
    
* At 640 AM CDT, a severe thunderstorm capable of producing a tornado
  was located 8 miles west of McHenry, or 12 miles southwest of
  Wiggins, 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...
  Perkinston and McHenry around 655 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 3081 8934 3090 8882 3073 8879 3073 8888
      3068 8889 3068 8924 3065 8924 3065 8934
TIME...MOT...LOC 1140Z 260DEG 33KT 3072 8927 

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

$$

2 follow-up statements

684 
WWUS54 KMOB 231155
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
655 AM CDT Thu Apr 23 2020

MSC039-131-231230-
/O.CON.KMOB.TO.W.0042.000000T0000Z-200423T1230Z/
George MS-Stone MS-
655 AM CDT Thu Apr 23 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 AM CDT FOR
SOUTHWESTERN GEORGE AND EASTERN STONE COUNTIES...
    
At 655 AM CDT, a severe thunderstorm capable of producing a tornado
was located over Perkinston, or 5 miles south of Wiggins, 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
southwestern George and eastern Stone 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 3090 8882 3073 8879 3073 8888 3068 8889
      3068 8915 3075 8921 3084 8915
TIME...MOT...LOC 1155Z 250DEG 31KT 3078 8913 

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

$$

612 
WWUS54 KMOB 231204
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
704 AM CDT Thu Apr 23 2020

MSC039-131-231213-
/O.CAN.KMOB.TO.W.0042.000000T0000Z-200423T1230Z/
George MS-Stone MS-
704 AM CDT Thu Apr 23 2020

...THE TORNADO WARNING FOR SOUTHWESTERN GEORGE AND EASTERN STONE
COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, therefore the warning has been cancelled.

A Tornado Watch remains in effect until 100 PM CDT for southeastern
Mississippi.

LAT...LON 3090 8882 3073 8879 3073 8888 3068 8889
      3068 8915 3075 8921 3084 8915
TIME...MOT...LOC 1203Z 260DEG 33KT 3079 8904 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 23, 4:26 AM CDT	Severe Thunderstorm Warning	MOB	Wayne	49 min
Apr 23, 4:32 AM CDT	Tornado Warning Tornado observed	MOB	Wayne	28 min
Apr 23, 4:55 AM CDT	Tornado Warning	MOB	Wayne	50 min
Apr 23, 5:19 AM CDT	Tornado Warning	MOB	Wayne	12 min
Apr 23, 5:35 AM CDT	Severe Thunderstorm Warning	MOB	Perry, Stone	40 min
Apr 23, 6:03 AM CDT	Severe Thunderstorm Warning	MOB	George, Greene, Perry, Stone	42 min
Apr 23, 6:11 AM CDT	Tornado Warning	MOB	George	34 min
Apr 23, 7:30 AM CDT	Flash Flood Warning	MOB	George	3 hr
Apr 23, 7:41 AM CDT	Severe Thunderstorm Warning	MOB	George	49 min
Apr 23, 11:01 AM CDT	River Flood Warning	MOB	George, Greene, Perry	6 days
Apr 23, 3:38 PM CDT	Severe Thunderstorm Warning	MOB	Wayne	50 min

Nearby

Tornado Warnings in Mississippi, 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.