Alert archive / Mississippi / Tornado Warnings in 2017

Tornado Warning 15, NWS Jackson, MS

January 21, 2017Lamar County, Mississippi

NWS Jackson, MS issued this tornado warning at Jan 21, 2017, 3:57 AM CST for Lamar County, Mississippi. It was in force for 38 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: Jan 21, 2017, 3:57 AM CST (09:57 UTC)
Expired: Jan 21, 2017, 4:35 AM CST
In force: 38 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Lamar County, MS

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jan 20, 11:00 PM CST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 10.0 hours before the alert went out and 111 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: 628 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 857 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 150 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

As transmitted.

494 
WFUS54 KJAN 210957
TORJAN
MSC073-211100-
/O.NEW.KJAN.TO.W.0015.170121T0957Z-170121T1100Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jackson MS
357 AM CST SAT JAN 21 2017

The National Weather Service in Jackson has issued a

* Tornado Warning for...
  Central Lamar County in southeastern Mississippi...

* Until 500 AM CST
    
* At 357 AM CST, a severe thunderstorm capable of producing a tornado
  was located 7 miles northeast of Pinebur, or 13 miles east of
  Columbia, moving northeast at 45 mph.

  HAZARD...Tornado and quarter size hail. 

  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...
  Hattiesburg around 410 AM CST. 
  West Hattiesburg and Oak Grove around 415 AM CST. 

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 3111 8966 3131 8965 3143 8945 3135 8945
      3134 8935 3115 8935 3110 8965
TIME...MOT...LOC 0957Z 233DEG 40KT 3120 8960 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

19

1 follow-up statement

399 
WWUS54 KJAN 211035
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
435 AM CST SAT JAN 21 2017

MSC073-211045-
/O.CAN.KJAN.TO.W.0015.000000T0000Z-170121T1100Z/
Lamar MS-
435 AM CST SAT JAN 21 2017

...THE TORNADO WARNING FOR CENTRAL LAMAR COUNTY IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been cancelled.  However gusty winds are
still possible with this thunderstorm.

A tornado watch remains in effect until 700 AM CST for south central
and southeastern Mississippi.

LAT...LON 3111 8966 3131 8965 3143 8945 3135 8945
      3134 8935 3115 8935 3110 8965
TIME...MOT...LOC 1034Z 233DEG 40KT 3146 8920 

$$

19

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 21, 12:24 AM CST	Severe Thunderstorm Warning	JAN	Adams, Franklin	66 min
Jan 21, 12:51 AM CST	Severe Thunderstorm Warning	JAN	Adams	54 min
Jan 21, 1:19 AM CST	Severe Thunderstorm Warning	JAN	Copiah, Lincoln	56 min
Jan 21, 1:38 AM CST	Severe Thunderstorm Warning	JAN	Franklin	52 min
Jan 21, 2:02 AM CST	Severe Thunderstorm Warning	JAN	Rankin, Simpson	58 min
Jan 21, 2:22 AM CST	Severe Thunderstorm Warning	JAN	Lawrence, Lincoln	53 min
Jan 21, 2:29 AM CST	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis, Marion	61 min
Jan 21, 2:57 AM CST	Tornado Warning	JAN	Lamar, Marion	63 min
Jan 21, 3:04 AM CST	Special Weather Statement	JAN	Scott, Smith	26 min
Jan 21, 3:12 AM CST	Tornado Warning	JAN	Covington, Jasper, Jones, Smith	48 min
Jan 21, 3:20 AM CST	Flash Flood Warning	JAN	Adams, Claiborne, Copiah, Franklin, Jefferson, Lincoln	3 hr
Jan 21, 3:26 AM CST	Special Weather Statement	JAN	Clarke	34 min
Jan 21, 3:32 AM CST	Severe Thunderstorm Warning	JAN	Jones	43 min
Jan 21, 3:36 AM CST	Tornado Warning	JAN	Forrest, Jones, Lamar	54 min
Jan 21, 3:38 AM CST	Severe Thunderstorm Warning	JAN	Jefferson Davis, Marion	25 min
Jan 21, 4:09 AM CST	Severe Thunderstorm Warning	JAN	Jasper	51 min
Jan 21, 4:24 AM CST	Severe Thunderstorm Warning	JAN	Forrest, Jones	42 min
Jan 21, 4:24 AM CST	Tornado Warning	JAN	Clarke	41 min
Jan 21, 4:31 AM CST	Flash Flood Warning	JAN	Covington, Forrest, Jefferson Davis, Jones, Lamar, Marion	4 hr
Jan 21, 9:21 AM CST	River Flood Warning	JAN	Lawrence	4 days
Jan 21, 2:21 PM CST	River Flood Warning	JAN	Leake	4 days

Nearby

Tornado Warnings in Mississippi, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.