Alert archive / Mississippi / Tornado Warnings in 2018

Tornado Warning 25, NWS Jackson, MS

April 6, 2018Jefferson Davis County, Lawrence County, Simpson County, Mississippi

NWS Jackson, MS issued this tornado warning at Apr 6, 2018, 10:35 PM CDT for Jefferson Davis County, Lawrence County, Simpson County, Mississippi. It was in force for 55 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 6, 2018, 10:35 PM CDT (03:35 UTC)
Expired: Apr 6, 2018, 11:30 PM CDT
In force: 55 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Jefferson Davis County, MS, Lawrence County, MS, Simpson County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 59 km from the middle of the area, began a volume at 03:34 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

Time	Report	Where	Remark
Apr 6, 11:01 PM CDT	TORNADO	3 Ene New Hebron, MS	THIS TORNADO TOUCHED DOWN JUST EAST-NORTHEAST OF NEW HEBRON, ALONG OLD HEBRON GWINVILLE ROAD. SOME TREES WERE SNAPPED AND UPROOTED IN THIS AREA. IT CONTINUED EAST-SOUTHEAST TOWARDS SILVER SWAMP ROAD AND NEW HEBRON JANESVILLE ROAD. MORE TREES AND LIMBS WERE SNA

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.

Issued	Product	Office	Lasted
Apr 6, 3:20 PM CDT	Tornado Watch	SPC	8 hr
Apr 6, 8:53 PM CDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 3.6 hours before the alert went out and 64 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: 877 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 706 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 212 m²/s²
0-3 km storm-relative helicity: 369 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 5.0

Open this sounding in Storm Lab

The text

As transmitted.

044 
WFUS54 KJAN 070335
TORJAN
MSC065-077-127-070430-
/O.NEW.KJAN.TO.W.0025.180407T0335Z-180407T0430Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jackson MS
1035 PM CDT FRI APR 6 2018

The National Weather Service in Jackson has issued a

* Tornado Warning for...
  Southern Simpson County in central Mississippi...
  Northern Lawrence County in south central Mississippi...
  Northwestern Jefferson Davis County in south central Mississippi...

* Until 1130 PM CDT
    
* At 1034 PM CDT, a severe thunderstorm capable of producing a
  tornado was located near Rockport, or 13 miles southeast of
  Hazlehurst, 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 dangerous storm will be near...
  Oma around 1040 PM CDT. 
  Shivers around 1055 PM CDT. 
  Clem around 1115 PM CDT. 

Other locations impacted by this tornadic thunderstorm include New
Hebron.

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 3166 9000 3172 9024 3175 9012 3177 9013
      3177 9011 3179 9011 3179 9014 3181 9015
      3181 9014 3183 8976 3162 8976
TIME...MOT...LOC 0334Z 275DEG 30KT 3177 9020 

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

$$

BYB

3 follow-up statements

705 
WWUS54 KJAN 070359
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
1059 PM CDT FRI APR 6 2018

MSC065-077-127-070430-
/O.CON.KJAN.TO.W.0025.000000T0000Z-180407T0430Z/
Simpson MS-Lawrence MS-Jefferson Davis MS-
1059 PM CDT FRI APR 6 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT FOR
SOUTHEASTERN SIMPSON...NORTHEASTERN LAWRENCE AND NORTHWESTERN
JEFFERSON DAVIS COUNTIES...
    
At 1058 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Hebron, or 8 miles south of Pinola, 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 dangerous storm will be near...
  Clem around 1115 PM CDT. 

Other locations impacted by this tornadic thunderstorm include New
Hebron.

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 3167 9005 3182 9000 3183 8976 3162 8976
      3166 9000
TIME...MOT...LOC 0358Z 275DEG 30KT 3175 8996 

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

$$

BYB

542 
WWUS54 KJAN 070407
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
1107 PM CDT FRI APR 6 2018

MSC077-127-070417-
/O.CAN.KJAN.TO.W.0025.000000T0000Z-180407T0430Z/
Simpson MS-Lawrence MS-
1107 PM CDT FRI APR 6 2018

...THE TORNADO WARNING FOR SOUTHEASTERN SIMPSON AND NORTHEASTERN
LAWRENCE COUNTIES IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A severe thunderstorm watch remains in effect until 500 AM CDT for
south central Mississippi.

LAT...LON 3163 8982 3165 8992 3176 8991 3177 8976
      3162 8976
TIME...MOT...LOC 0407Z 275DEG 30KT 3174 8987 

$$

MSC065-070430-
/O.CON.KJAN.TO.W.0025.000000T0000Z-180407T0430Z/
Jefferson Davis MS-
1107 PM CDT FRI APR 6 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT FOR
NORTHWESTERN JEFFERSON DAVIS COUNTY...
    
At 1107 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Hebron, or 10 miles southeast of Pinola, 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 dangerous storm will be near...
  Clem around 1115 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 3163 8982 3165 8992 3176 8991 3177 8976
      3162 8976
TIME...MOT...LOC 0407Z 275DEG 30KT 3174 8987 

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

$$

BYB

097 
WWUS54 KJAN 070425
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
1125 PM CDT FRI APR 6 2018

MSC065-070434-
/O.EXP.KJAN.TO.W.0025.000000T0000Z-180407T0430Z/
Jefferson Davis MS-
1125 PM CDT FRI APR 6 2018

...THE TORNADO WARNING FOR NORTHWESTERN JEFFERSON DAVIS COUNTY WILL
EXPIRE AT 1130 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.

A severe thunderstorm watch remains in effect until 500 AM CDT for
south central Mississippi.

Remember, a Severe Thunderstorm Warning also still remains in effect 
for central and southern portions of Jefferson Davis county until 
1215 AM CDT.

LAT...LON 3163 8982 3165 8992 3176 8991 3177 8976
      3162 8976
TIME...MOT...LOC 0424Z 275DEG 30KT 3173 8973 

$$

BYB

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 6, 7:18 PM CDT	Flash Flood Warning	JAN	Issaquena, Warren	3 hr
Apr 6, 7:52 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Newton, Rankin, Scott, Smith	53 min
Apr 6, 8:00 PM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Copiah, Hinds, Jefferson, Warren	60 min
Apr 6, 8:03 PM CDT	Tornado Warning	JAN	Rankin	15 min
Apr 6, 8:09 PM CDT	Tornado Warning	JAN	Claiborne, Warren	36 min
Apr 6, 8:13 PM CDT	Flash Flood Warning	JAN	Hinds, Madison, Rankin, Warren	3 hr
Apr 6, 8:48 PM CDT	Special Weather Statement	JAN	Newton, Smith	57 min
Apr 6, 8:51 PM CDT	Flash Flood Warning	JAN	Leake, Neshoba, Newton, Scott	3 hr
Apr 6, 8:54 PM CDT	Severe Thunderstorm Warning	JAN	Adams, Claiborne, Copiah, Hinds, Jefferson, Simpson	66 min
Apr 6, 9:19 PM CDT	Tornado Warning	JAN	Claiborne, Copiah	41 min
Apr 6, 9:25 PM CDT	Tornado Warning	JAN	Copiah, Hinds	35 min
Apr 6, 9:29 PM CDT	Severe Thunderstorm Warning	JAN	Clarke, Jasper, Lauderdale, Newton	46 min
Apr 6, 9:37 PM CDT	Severe Thunderstorm Warning	JAN	Adams	68 min
Apr 6, 9:45 PM CDT	Flash Flood Warning	JAN	Clarke, Kemper, Lauderdale	3 hr
Apr 6, 9:55 PM CDT	River Flood Warning	JAN	Leake	4 days
Apr 6, 9:57 PM CDT	Tornado Warning	JAN	Copiah	48 min
Apr 6, 10:05 PM CDT	Severe Thunderstorm Warning	JAN	Simpson	55 min
Apr 6, 10:07 PM CDT	River Flood Warning	JAN	Sharkey	69 hr
Apr 6, 10:13 PM CDT	Flash Flood Warning	JAN	Hinds, Rankin	3 hr
Apr 6, 10:43 PM CDT	Severe Thunderstorm Warning	JAN	Lawrence, Lincoln	46 min
Apr 6, 10:51 PM CDT	Severe Thunderstorm Warning	JAN	Adams, Franklin, Jefferson	39 min
Apr 6, 11:02 PM CDT	Areal Flood Warning	JAN	Hinds, Madison, Rankin, Warren	6 hr
Apr 6, 11:10 PM CDT	Flash Flood Warning	JAN	Clarke, Jasper, Smith	4 hr
Apr 6, 11:13 PM CDT	Tornado Warning	JAN	Covington	47 min
Apr 6, 11:17 PM CDT	Severe Thunderstorm Warning	JAN	Jefferson Davis, Lawrence, Marion	38 min
Apr 6, 11:36 PM CDT	Severe Thunderstorm Warning	JAN	Franklin, Lincoln	54 min
Apr 6, 11:46 PM CDT	Severe Thunderstorm Warning	JAN	Jones	59 min
Apr 7, 12:08 AM CDT	Flash Flood Warning	JAN	Jones	4 hr
Apr 7, 12:48 AM CDT	Special Weather Statement	JAN	Lamar, Marion	57 min
Apr 7, 1:26 AM CDT	Areal Flood Warning	JAN	Rankin	6 hr
Apr 7, 1:38 AM CDT	Special Weather Statement	JAN	Forrest	52 min
Apr 7, 1:48 AM CDT	Special Weather Statement	JAN	Lamar	27 min
Apr 7, 3:45 AM CDT	Freeze Warning	JAN	Attala, Bolivar, Carroll, Choctaw, Clay, Grenada and 11 more	28 hr
Apr 7, 9:01 AM CDT	River Flood Warning	JAN	Leake	5 days
Apr 7, 9:02 AM CDT	River Flood Warning	JAN	Leake	5 days
Apr 7, 9:03 AM CDT	River Flood Warning	JAN	Leake	50 hr

Nearby

Tornado Warnings in Mississippi, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.