Alert archive / Mississippi / Tornado Warnings in 2012

Tornado Warning 75, NWS Jackson, MS

October 17, 2012Leflore County, Mississippi

NWS Jackson, MS issued this tornado warning at Oct 17, 2012, 10:09 PM CDT for Leflore County, Mississippi. It was in force for 36 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: Oct 17, 2012, 10:09 PM CDT (03:09 UTC)
Expired: Oct 17, 2012, 10:45 PM CDT
In force: 36 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

County Leflore County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 156 km from the middle of the area, began a volume at 03:12 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.

Issued	Product	Office	Lasted
Oct 17, 7:01 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 3.2 hours before the alert went out and 132 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: 947 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 1045 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 228 m²/s²
0-3 km storm-relative helicity: 236 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 4.8

Open this sounding in Storm Lab

The text

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

681 
WFUS54 KJAN 180309
TORJAN
MSC083-180345-
/O.NEW.KJAN.TO.W.0075.121018T0309Z-121018T0345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSON MS
1009 PM CDT WED OCT 17 2012

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL LEFLORE COUNTY IN NORTH CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITY OF GREENWOOD...

* UNTIL 1045 PM CDT

* AT 1010 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 9 MILES
  SOUTHWEST OF SUNNYSIDE MOVING EAST AT 40 MPH.

* THE TORNADO WILL BE NEAR...
  SUNNYSIDE BY 1020 PM CDT...
  MONEY BY 1025 PM CDT...
  GREENWOOD BY 1030 PM CDT...

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CDT THURSDAY MORNING
FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND MISSISSIPPI.

&&

LAT...LON 3375 9030 3372 9031 3370 9030 3370 9027
      3374 9025 3372 9014 3368 9013 3365 9010
      3346 9010 3345 9014 3354 9045 3378 9045
TIME...MOT...LOC 0310Z 286DEG 33KT 3363 9041

$$

GRG

1 follow-up statement

820 
WWUS54 KJAN 180320
SVSJAN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
1020 PM CDT WED OCT 17 2012

MSC083-180345-
/O.CON.KJAN.TO.W.0075.000000T0000Z-121018T0345Z/
LEFLORE MS-
1020 PM CDT WED OCT 17 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT FOR CENTRAL
LEFLORE COUNTY...

AT 1020 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUE TO
TRACK A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
TORNADO WAS LOCATED NEAR SCHLATER MOVING EAST AT 50 MPH.

THE TORNADO WILL BE NEAR...
  MONEY BY 1025 PM CDT...
  GREENWOOD BY 1030 PM CDT...

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CDT THURSDAY MORNING
FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND MISSISSIPPI.

&&

LAT...LON 3375 9030 3372 9031 3370 9030 3370 9027
      3374 9025 3372 9014 3368 9013 3365 9011
      3346 9010 3345 9014 3353 9042 3375 9033
TIME...MOT...LOC 0320Z 291DEG 41KT 3359 9027

$$

GRG

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 17, 8:41 PM CDT	Severe Thunderstorm Warning	JAN	Bolivar	64 min
Oct 17, 8:48 PM CDT	Tornado Warning	JAN	Bolivar	41 min
Oct 17, 9:02 PM CDT	Tornado Warning	JAN	Bolivar	43 min
Oct 17, 9:07 PM CDT	Severe Thunderstorm Warning	JAN	Sunflower	53 min
Oct 17, 9:13 PM CDT	Tornado Warning	JAN	Sunflower	33 min
Oct 17, 9:41 PM CDT	Tornado Warning	JAN	Washington	30 min
Oct 17, 9:57 PM CDT	Severe Thunderstorm Warning	JAN	Grenada	63 min
Oct 17, 10:05 PM CDT	Tornado Warning	JAN	Grenada	40 min
Oct 17, 10:25 PM CDT	Severe Thunderstorm Warning	JAN	Holmes, Humphreys, Issaquena, Sharkey, Yazoo	65 min
Oct 17, 10:29 PM CDT	Severe Thunderstorm Warning	JAN	Carroll	31 min
Oct 17, 10:37 PM CDT	Tornado Warning	JAN	Holmes, Humphreys, Sharkey, Yazoo	53 min
Oct 17, 10:45 PM CDT	Severe Thunderstorm Warning	JAN	Clay, Webster	60 min
Oct 17, 11:13 PM CDT	Tornado Warning	JAN	Holmes, Yazoo	47 min
Oct 17, 11:27 PM CDT	Tornado Warning	JAN	Yazoo	48 min
Oct 17, 11:36 PM CDT	Tornado Warning	JAN	Attala, Madison	39 min
Oct 17, 11:40 PM CDT	Severe Thunderstorm Warning	JAN	Clay, Lowndes, Oktibbeha	65 min
Oct 17, 11:49 PM CDT	Severe Thunderstorm Warning	JAN	Madison	56 min
Oct 17, 11:59 PM CDT	Tornado Warning	JAN	Madison, Rankin	46 min
Oct 18, 12:03 AM CDT	Tornado Warning	JAN	Leake, Scott	57 min
Oct 18, 12:50 AM CDT	Tornado Warning	JAN	Neshoba, Newton, Scott	55 min
Oct 18, 1:02 AM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Copiah, Jefferson, Lincoln	58 min
Oct 18, 1:03 AM CDT	Tornado Warning	JAN	Hinds	12 min
Oct 18, 1:07 AM CDT	Severe Thunderstorm Warning	JAN	Noxubee	38 min
Oct 18, 1:27 AM CDT	Tornado Warning	JAN	Clarke, Lauderdale	63 min
Oct 18, 1:41 AM CDT	Tornado Warning	JAN	Kemper, Lauderdale	34 min
Oct 18, 1:44 AM CDT	Severe Thunderstorm Warning	JAN	Rankin	15 min
Oct 18, 1:49 AM CDT	Severe Thunderstorm Warning	JAN	Franklin, Jefferson, Lincoln	56 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.