Alert archive / Mississippi / Tornado Warnings in 2017

Tornado Warning 32, NWS Jackson, MS

February 7, 2017Clarke County, Mississippi

NWS Jackson, MS issued this tornado warning at Feb 7, 2017, 6:10 PM CST for Clarke County, Mississippi. It was in force for 20 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: Feb 7, 2017, 6:10 PM CST (00:10 UTC)
Expired: Feb 7, 2017, 6:30 PM CST
In force: 20 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Clarke County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 135 km from the middle of the area, began a volume at 00:13 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
Feb 7, 6:15 PM CST	HAIL 1	2 Wsw De Soto, MS	QUARTER SIZED HAIL REPORTED BY THE EMERGENCY MANAGER 2 MILES WEST SOUTHWEST OF DE SOTO ALONG COUNTY HIGHWAY 280.

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
Feb 7, 7:54 AM CST	Tornado Watch	SPC	11 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 0.2 hours before the alert went out and 145 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: 979 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 1605 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.3

Open this sounding in Storm Lab

The text

As transmitted.

443 
WFUS54 KJAN 080010
TORJAN
MSC023-080115-
/O.NEW.KJAN.TO.W.0032.170208T0010Z-170208T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jackson MS
610 PM CST TUE FEB 7 2017

The National Weather Service in Jackson has issued a

* Tornado Warning for...
  Southern Clarke County in east central Mississippi...

* Until 715 PM CST
    
* At 610 PM CST, a severe thunderstorm capable of producing a tornado
  was located near Barnett, or 8 miles southwest of Quitman, moving
  southeast at 25 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...
  De Soto around 630 PM CST. 

Other locations impacted by this tornadic thunderstorm include
Shubuta.

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 3189 8848 3185 8864 3183 8876 3184 8878
      3189 8885 3201 8872 3191 8847 3190 8847
TIME...MOT...LOC 0010Z 304DEG 20KT 3199 8884 

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

$$

DB

1 follow-up statement

983 
WWUS54 KJAN 080030
SVSJAN

Severe Weather Statement
National Weather Service Jackson MS
630 PM CST TUE FEB 7 2017

MSC023-080040-
/O.CAN.KJAN.TO.W.0032.000000T0000Z-170208T0115Z/
Clarke MS-
630 PM CST TUE FEB 7 2017

...THE TORNADO WARNING FOR SOUTHERN CLARKE COUNTY IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning has been cancelled.

A tornado watch remains in effect until 700 PM CST for east central
Mississippi.

LAT...LON 3189 8848 3185 8864 3183 8876 3184 8878
      3189 8885 3201 8872 3191 8847 3190 8847
TIME...MOT...LOC 0027Z 304DEG 20KT 3193 8873 

$$

DB

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 8, 1:06 AM CST	Dense Fog Advisory	JAN	Attala, Carroll, Choctaw, Clay, Grenada, Kemper and 11 more	7 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.