Alert archive / Louisiana / Tornado Warnings in 2020

Tornado Warning 53, NWS Jackson, MS

September 23, 2020Concordia Parish, Louisiana; Adams County, Mississippi

NWS Jackson, MS issued this tornado warning at Sep 23, 2020, 3:14 PM CDT for Concordia Parish, Louisiana; Adams County, Mississippi. It was in force for 61 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
Sep 23, 2020, 3:14 PM CDT (20:14 UTC)
Expired
Sep 23, 2020, 4:15 PM CDT
In force
61 min
Issued by
NWS Jackson, MS
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Concordia Parish, LA, Adams County, MS

The radar

The Ft Polk radar (KPOE), 133 km from the middle of the area, began a volume at 20:15 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
Sep 23, 2:37 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 8.2 hours before the alert went out and 189 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 2020-09-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2020-09-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 134 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
729 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
134 m²/s²
0-3 km storm-relative helicity
148 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

267 
WFUS54 KJAN 232014
TORJAN
LAC029-MSC001-232115-
/O.NEW.KJAN.TO.W.0053.200923T2014Z-200923T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jackson MS
314 PM CDT Wed Sep 23 2020

The National Weather Service in Jackson has issued a

* Tornado Warning for...
  Southern Concordia Parish in northeastern Louisiana...
  Southwestern Adams County in southwestern Mississippi...

* Until 415 PM CDT.
    
* At 313 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Big Bend, or near Simmesport, moving northeast at
  25 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...
  Black Hawk around 335 PM CDT.
  Slocum around 355 PM CDT.
  Deer Park around 415 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 3104 9165 3104 9172 3110 9170 3114 9172
      3119 9168 3125 9180 3148 9156 3133 9138
      3131 9143 3132 9147 3129 9147 3128 9150
      3126 9148 3123 9149 3121 9152 3124 9156
      3122 9158 3111 9163 3104 9156 3098 9166
TIME...MOT...LOC 2013Z 212DEG 22KT 3103 9171 

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

$$

JM
1 follow-up statement
630 
WWUS54 KJAN 232048
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
348 PM CDT Wed Sep 23 2020

LAC029-MSC001-232115-
/O.CON.KJAN.TO.W.0053.000000T0000Z-200923T2115Z/
Concordia LA-Adams MS-
348 PM CDT Wed Sep 23 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR
SOUTHEASTERN CONCORDIA PARISH IN NORTHEASTERN LOUISIANA AND
SOUTHWESTERN ADAMS COUNTIES...
    
At 347 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Black Hawk, or 18 miles southeast of Monterey,
moving northeast at 25 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
southeastern Concordia Parish in northeastern Louisiana and
southwestern Adams 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 3104 9165 3104 9172 3110 9170 3114 9172
      3119 9168 3122 9174 3144 9151 3133 9138
      3131 9143 3132 9147 3129 9147 3128 9150
      3126 9148 3123 9149 3121 9152 3124 9156
      3122 9158 3111 9163 3104 9156 3098 9166
TIME...MOT...LOC 2047Z 212DEG 22KT 3121 9158 

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

$$

JM

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 23, 3:56 AM CDTFlash Flood WatchJANCatahoula, Concordia, East Carroll, Franklin, Madison, Morehouse and 3 more30 hr
Sep 23, 10:14 AM CDTFlash Flood WarningJANMorehouse2 hr
Sep 23, 12:15 PM CDTFlash Flood WarningJANMorehouse3 hr
Sep 23, 3:00 PM CDTSevere Thunderstorm WarningJANCatahoula, Concordia60 min
Sep 23, 5:23 PM CDTFlash Flood WarningJANCatahoula, Concordia, Tensas3 hr
Sep 23, 6:53 AM CDTFlash Flood WarningJANBolivar, Sunflower, Washington3 hr
Sep 23, 4:15 PM CDTSevere Thunderstorm WarningJANAdams, Franklin37 min
Sep 23, 5:39 PM CDTSevere Thunderstorm WarningJANAdams, Franklin, Jefferson26 min

Nearby

Tornado Warnings in Louisiana, 2020Tornado Warnings in Mississippi, 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.