Alert archive / Mississippi / Tornado Warnings in 2012

Tornado Warning 16, NWS Jackson, MS

February 1, 2012Carroll County, Grenada County, Mississippi

NWS Jackson, MS issued this tornado warning at Feb 1, 2012, 5:48 PM CST for Carroll County, Grenada County, Mississippi. It was in force for 23 min. 3 reports 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 1, 2012, 5:48 PM CST (23:48 UTC)
Expired: Feb 1, 2012, 6:11 PM CST
In force: 23 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Carroll County, MS, Grenada County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 146 km from the middle of the area, began a volume at 23:48 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 1, 5:57 PM CST	TSTM WND DMG	1 Se Avalon, MS	TREES DOWNED ALONG MS HIGHWAY 7 NEAR THE GRENADA COUNTY LINE.
Feb 1, 6:05 PM CST	TSTM WND DMG	2 Nne Jefferson, MS	TREES DOWNED ALONG CR 106 NEAR THE GRENADA COUNTY LINE
Feb 1, 6:10 PM CST	TSTM WND DMG	3 E Jefferson, MS	* 1 FATAL * ONE FATALITY OCCURRED WHEN A PINE TREE FELL ON A ATV/OPERATOR.

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 1, 4:59 PM CST	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 12:00Z, 11.8 hours before the alert went out and 138 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: 34 J/kg
Mixed-layer CIN: -85 J/kg
Mixed-layer LCL: 838 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: -28 m²/s²
0-3 km storm-relative helicity: 53 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

366 
WFUS54 KJAN 012348
TORJAN
MSC015-043-020030-
/O.NEW.KJAN.TO.W.0016.120201T2348Z-120202T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
548 PM CST WED FEB 1 2012

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN CARROLL COUNTY IN NORTH CENTRAL MISSISSIPPI...
  SOUTHWESTERN GRENADA COUNTY IN NORTH CENTRAL MISSISSIPPI...

* UNTIL 630 PM CST

* AT 548 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 9 MILES WEST OF
  AVALON MOVING SOUTHEAST AT 45 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  LEFLORE...TEOC...MALMAISON...JEFFERSON AND NORTH CARROLLTON

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WARNING MEANS THAT A TORNADO IS OCCURRING OR IMMINENT. YOU
SHOULD ACTIVATE YOUR TORNADO ACTION PLAN AND TAKE PROTECTIVE ACTION
NOW.

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
QUARTER SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS IN EXCESS OF 
70 MPH!

&&

LAT...LON 3372 8978 3342 8978 3341 8977 3339 8977
      3354 9010 3365 9010 3368 9013 3377 9013
TIME...MOT...LOC 2348Z 297DEG 41KT 3367 9017

$$

BYB

1 follow-up statement

645 
WWUS54 KJAN 020011
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
611 PM CST WED FEB 1 2012

MSC015-043-020020-
/O.CAN.KJAN.TO.W.0016.000000T0000Z-120202T0030Z/
GRENADA MS-CARROLL MS-
611 PM CST WED FEB 1 2012

...THE TORNADO WARNING FOR NORTHERN CARROLL AND SOUTHWESTERN GRENADA
COUNTIES IS CANCELLED...

THE STORM THAT PROMPTED THE TORNADO WARNING HAS WEAKENED. 
HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT THROUGH 
645 PM CST FOR GRENADA COUNTY AND THE MAJORITY OF CARROLL AND 
MONTGOMERY COUNTIES. 

LAT...LON 3372 8978 3342 8978 3341 8977 3339 8977
      3354 9010 3365 9010 3368 9013 3377 9013
TIME...MOT...LOC 0010Z 297DEG 41KT 3355 8990

$$

BYB

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 1, 2:06 AM CST	Severe Thunderstorm Warning	JAN	Adams, Franklin	54 min
Feb 1, 4:02 AM CST	Special Weather Statement	JAN	Lawrence, Lincoln	33 min
Feb 1, 5:35 AM CST	Special Weather Statement	JAN	Covington	30 min
Feb 1, 6:41 AM CST	Special Weather Statement	JAN	Jones	29 min
Feb 1, 6:54 AM CST	Special Weather Statement	JAN	Forrest, Lamar	31 min
Feb 1, 7:19 AM CST	Special Weather Statement	JAN	Forrest, Lamar	31 min
Feb 1, 9:27 AM CST	Severe Thunderstorm Warning	JAN	Adams	48 min
Feb 1, 10:20 AM CST	Special Weather Statement	JAN	Adams	30 min
Feb 1, 4:33 PM CST	Severe Thunderstorm Warning	JAN	Bolivar, Sunflower	57 min
Feb 1, 5:11 PM CST	Tornado Warning	JAN	Leflore, Sunflower	49 min
Feb 1, 5:24 PM CST	Severe Thunderstorm Warning	JAN	Bolivar, Leflore, Sunflower, Washington	43 min
Feb 1, 5:43 PM CST	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Montgomery	62 min

Nearby

Tornado Warnings in Mississippi, 2012 Every tornado warning in 2012 Tornadoes in 2012

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.