Alert archive / Mississippi / Tornado Watches in 2020

Tornado Watch 22

February 5, 202030 parishes in Louisiana; 46 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Feb 5, 2020, 11:49 AM CST for 30 parishes in Louisiana; 46 counties in Mississippi. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Feb 5, 2020, 11:49 AM CST (17:49 UTC)
Expired
Feb 5, 2020, 6:00 PM CST
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 76 counties

Acadia Parish, LA, Allen Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, Caldwell Parish, LA, Catahoula Parish, LA, Concordia Parish, LA, East Baton Rouge Parish, LA, East Carroll Parish, LA, East Feliciana Parish, LA, Evangeline Parish, LA, Franklin Parish, LA, Grant Parish, LA, Iberville Parish, LA, Jefferson Davis Parish, LA, LaSalle Parish, LA, Madison Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Pointe Coupee Parish, LA, Rapides Parish, LA, Richland Parish, LA, Saint Helena Parish, LA, Saint Landry Parish, LA, Tensas Parish, LA, Vernon Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Winn Parish, LA, Adams County, MS, Amite County, MS, Attala County, MS, Carroll County, MS, Choctaw County, MS, Claiborne County, MS, Clarke County, MS, Clay County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, Franklin County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jasper County, MS, Jefferson County, MS, Jefferson Davis County, MS, Jones County, MS, Kemper County, MS, Lamar County, MS, Lauderdale County, MS, Lawrence County, MS, Leake County, MS, Lincoln County, MS, Lowndes County, MS, Madison County, MS, Marion County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Pike County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Simpson County, MS, Smith County, MS, Warren County, MS, Webster County, MS, Wilkinson County, MS, Winston County, MS, Yazoo County, MS

The radar

The Ft Polk radar (KPOE), 153 km from the middle of the area, began a volume at 17:50 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 SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
70%
One or more EF2 to EF5 tornadoes
40%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
30%
One or more hailstones of 2 inches or more
10%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

27 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Feb 5, 12:06 PM CSTSevere Thunderstorm WarningSHVWinn42 min
Feb 5, 12:20 PM CSTSevere Thunderstorm WarningLCHVernon11 min
Feb 5, 12:42 PM CSTSevere Thunderstorm WarningSHVJackson, Lincoln, Ouachita, Union32 min
Feb 5, 1:28 PM CSTSevere Thunderstorm WarningLIXEast Baton Rouge, Iberville, Pointe Coupee, West Baton Rouge, West Feliciana32 min
Feb 5, 1:30 PM CSTFlash Flood WarningJANCovington, Smith6 hr
Feb 5, 1:35 PM CSTSevere Thunderstorm WarningJANEast Carroll, West Carroll26 min
Feb 5, 1:46 PM CSTSevere Thunderstorm WarningLCHIberia, Lafayette, Saint Landry, Saint Martin, Vermilion37 min
Feb 5, 1:55 PM CSTSevere Thunderstorm WarningJANCopiah, Lawrence, Lincoln, Simpson50 min
Feb 5, 2:07 PM CSTTornado WarningJANCopiah, Lawrence, Lincoln, Rankin, Simpson53 min
Feb 5, 2:27 PM CSTSevere Thunderstorm WarningLIXEast Baton Rouge, Iberville, Livingston, West Baton Rouge33 min
Feb 5, 2:55 PM CSTTornado WarningJANSimpson, Smith44 min
Feb 5, 3:01 PM CSTSevere Thunderstorm WarningJANIssaquena, Sharkey, Warren, Yazoo44 min
Feb 5, 3:02 PM CSTTornado Warning Tornado observedJANSimpson, Smith58 min
Feb 5, 3:05 PM CSTSevere Thunderstorm WarningJANCopiah, Lawrence, Lincoln41 min
Feb 5, 3:10 PM CSTTornado WarningJANCopiah, Jefferson Davis, Lawrence, Lincoln, Simpson22 min
Feb 5, 3:21 PM CSTTornado WarningJANYazoo54 min
Feb 5, 3:33 PM CSTSevere Thunderstorm WarningJANJasper, Newton, Scott, Smith42 min
Feb 5, 3:55 PM CSTTornado WarningJANAttala, Holmes, Leake, Madison65 min
Feb 5, 3:59 PM CSTSevere Thunderstorm WarningJANCovington, Forrest, Jefferson Davis, Jones, Lamar, Marion61 min
Feb 5, 4:13 PM CSTSevere Thunderstorm WarningJANClaiborne, Hinds, Warren32 min
Feb 5, 4:41 PM CSTSevere Thunderstorm WarningJANHinds, Madison49 min
Feb 5, 4:52 PM CSTTornado WarningJANAttala, Choctaw, Winston35 min
Feb 5, 5:10 PM CSTSevere Thunderstorm WarningJANOktibbeha35 min
Feb 5, 5:16 PM CSTSevere Thunderstorm WarningJANLeake, Madison44 min
Feb 5, 5:31 PM CSTSevere Thunderstorm WarningJANOktibbeha26 min
Feb 5, 5:34 PM CSTTornado WarningJANLeake, Neshoba56 min
Feb 5, 5:41 PM CSTTornado WarningJANClay, Lowndes, Oktibbeha49 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 5.8 hours before the alert went out and 150 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 2020-02-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 788 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jackson, MS at 12:00Z on 2020-02-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 172 square meters per square second.1939587897Sfc1 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
788 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
590 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
172 m²/s²
0-3 km storm-relative helicity
221 m²/s²
Significant tornado parameter
0.8
Supercell composite
3.6

Open this sounding in Storm Lab

The text

As transmitted.

100 
WWUS20 KWNS 051744
SEL2  
SPC WW 051744
LAZ000-MSZ000-060000-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 22
NWS Storm Prediction Center Norman OK
1150 AM CST Wed Feb 5 2020

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Central Louisiana
  Central and Southwest Mississippi

* Effective this Wednesday morning and evening from 1150 AM until
  600 PM CST.

* Primary threats include...
  A few tornadoes likely with a couple intense tornadoes possible
  Scattered damaging wind gusts to 70 mph possible
  Isolated large hail events to 1.5 inches in diameter possible

SUMMARY...Thunderstorms are expected to continue to develop over
central Louisiana this afternoon and spread northeastward across the
watch area.  A few supercell storms are possible, capable of
damaging winds and tornadoes.

The tornado watch area is approximately along and 55 statute miles
north and south of a line from 20 miles north northwest of Lake
Charles LA to 195 miles northeast of Natchez MS. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU2).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings.

&&

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 450. Mean
storm motion vector 23035.

...Hart

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 5, 10:28 AM CSTMesoscale DiscussionSPCAllen, Avoyelles, Catahoula, Concordia, Evangeline, LaSalle and 4 more92 min
Feb 5, 11:16 AM CSTMesoscale DiscussionSPCOrleans, Saint Bernard, Saint Charles, Saint Tammany119 min
Feb 5, 1:19 PM CSTMesoscale DiscussionSPCAscension, Assumption, East Baton Rouge, East Feliciana, Iberville, Livingston and 9 more86 min
Feb 5, 1:39 PM CSTMesoscale DiscussionSPCCatahoula, Concordia, Madison, Tensas96 min
Feb 5, 3:41 PM CSTMesoscale DiscussionSPCConcordia, East Baton Rouge, East Feliciana, Pointe Coupee, Saint Helena, Tensas and 2 more64 min
Feb 5, 3:47 PM CSTMesoscale DiscussionSPCItawamba, Monroe, Prentiss, Tishomingo118 min
Feb 5, 4:25 PM CSTTornado WatchSPCAlcorn, Calhoun, Chickasaw, Itawamba, Lee, Monroe and 4 more5 hr
Feb 5, 5:06 PM CSTMesoscale DiscussionSPCAmite, Clarke, Clay, Copiah, Covington, Forrest and 27 more84 min
Feb 5, 5:50 PM CSTTornado WatchSPCClarke, Covington, Forrest, Greene, Jasper, Jefferson Davis and 19 more6 hr

Nearby

Tornado Watches in Mississippi, 2020Tornado Watches in Louisiana, 2020Every tornado watch 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.