Alert archive / Mississippi / Tornado Warnings in 2012

Tornado Warning 70, NWS Jackson, MS

October 17, 2012Bolivar County, Mississippi

NWS Jackson, MS issued this tornado warning at Oct 17, 2012, 8:48 PM CDT for Bolivar County, Mississippi. It was in force for 41 min. 4 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
Oct 17, 2012, 8:48 PM CDT (01:48 UTC)
Expired
Oct 17, 2012, 9:29 PM CDT
In force
41 min
Issued by
NWS Jackson, MS
Area
Storm-based polygon

County Bolivar County, MS

The radar

The Little Rock radar (KLZK), 155 km from the middle of the area, began a volume at 01:50 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

TimeReportWhereRemark
Oct 17, 9:04 PM CDTHAIL 1Duncan, MS
Oct 17, 9:07 PM CDTTORNADO 23 Ne Shelby, MSTORNADO CAUSED DAMAGE TO ROOF OF A HOME AND SEVERAL SHEDS. A HOUSE WAS BLOWN OFF ITS BLOCKS. A MOBILE HOME AND SILO DESTROYED. SEVERAL POWER POLES AND A RADIO TOWER SNAPPED AS WELL. MAX WIND SPEED 115 MPH...PATH LENGTH 1 1/4 MILES...MAX WIDTH 150 YARDS.
Oct 17, 9:08 PM CDTTSTM WND DMGShelby, MSMAJOR DAMAGE TO A HOME AND CAR...REPORT VIA SOCIAL MEDIA.
Oct 17, 9:08 PM CDTTORNADO2 Ne Shelby, MSHEAVY DAMAGE ALONG BLUE CANE RD...3 STRUCTURES DAMAGED WITH ONE HOME OFF ITS BLOCKS ALONG WITH THE ROOF REMOVED. POWER LINES DOWN AND POWER POLES SNAPPED.

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.

IssuedProductOfficeLasted
Oct 17, 7:01 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 1.8 hours before the alert went out and 131 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-pSkew-T log-p diagram, Little Rock, AR at 00:00Z on 2012-10-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 947 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 00:00Z on 2012-10-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 228 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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.

927 
WFUS54 KJAN 180148
TORJAN
MSC011-180245-
/O.NEW.KJAN.TO.W.0070.121018T0148Z-121018T0245Z/

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

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN BOLIVAR COUNTY IN NORTHWEST MISSISSIPPI...
  THIS INCLUDES THE CITY OF SHELBY...

* UNTIL 945 PM CDT

* AT 848 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR GUNNISON
  MOVING EAST AT 50 MPH.

* THE TORNADO WILL BE NEAR...
  DEESON BY 855 PM CDT...
  SHELBY AND MOUND BAYOU BY 900 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.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

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

&&

LAT...LON 3387 9066 3389 9105 3393 9102 3395 9108
      3398 9109 3399 9107 3400 9101 3396 9098
      3398 9097 3402 9099 3403 9090 3409 9088
      3412 9065
TIME...MOT...LOC 0148Z 261DEG 45KT 3399 9096

$$

AEG
3 follow-up statements
507 
WWUS54 KJAN 180155
SVSJAN

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

MSC011-180245-
/O.CON.KJAN.TO.W.0070.000000T0000Z-121018T0245Z/
BOLIVAR MS-
855 PM CDT WED OCT 17 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM CDT FOR NORTHERN
BOLIVAR COUNTY...

AT 855 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUE TO 
TRACK A SEVERE THUNDERSTORM WITH STRONG ROTATION...CAPABLE OF 
PRODUCING A TORNADO.  THIS TORNADO WAS LOCATED NEAR GUNNISON MOVING 
EAST AT 45 MPH.

THE TORNADO WILL BE NEAR...
  SHELBY...DUNCAN...WINSTONVILLE AND MOUND BAYOU BY 905 PM CDT...
  ALLIGATOR BY 910 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 3387 9066 3389 9105 3393 9102 3395 9108
      3398 9109 3399 9107 3400 9101 3396 9098
      3398 9097 3402 9099 3403 9090 3409 9088
      3412 9065
TIME...MOT...LOC 0155Z 266DEG 39KT 3399 9088

$$

AEG
636 
WWUS54 KJAN 180203
SVSJAN

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

MSC011-180245-
/O.CON.KJAN.TO.W.0070.000000T0000Z-121018T0245Z/
BOLIVAR MS-
903 PM CDT WED OCT 17 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM CDT FOR NORTHERN
BOLIVAR COUNTY...

AT 902 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUE TO 
TRACK A SEVERE THUNDERSTORM WITH STRONG ROTATION...LIKELY PRODUCING 
A TORNADO.  THIS TORNADO WAS LOCATED NEAR SHELBY MOVING EAST AT 55 
MPH.

PEOPLE IN NORTHERN BOLIVAR COUNTY...INCLUDING SHELBY AND THE 
SURROUNDING VICINITY...SHOULD BE IN SHELTER NOW!

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 3387 9066 3389 9105 3393 9102 3395 9108
      3398 9109 3399 9107 3400 9101 3396 9098
      3398 9097 3402 9099 3403 9090 3409 9088
      3412 9065
TIME...MOT...LOC 0202Z 277DEG 48KT 3396 9076

$$

AEG
768 
WWUS54 KJAN 180229
SVSJAN

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

MSC011-180239-
/O.CAN.KJAN.TO.W.0070.000000T0000Z-121018T0245Z/
BOLIVAR MS-
929 PM CDT WED OCT 17 2012

...THE TORNADO WARNING FOR NORTHERN BOLIVAR COUNTY IS CANCELLED...

THE STORM THAT PROMPTED THE TORNADO WARNING HAS MOVED OUT OF THE
COUNTY. A TORNADO WARNING DOES REMAIN IN EFFECT FOR SOUTHERN BOLIVAR 
COUNTY.

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

LAT...LON 3387 9066 3389 9105 3393 9102 3395 9108
      3398 9109 3399 9107 3400 9101 3396 9098
      3398 9097 3402 9099 3403 9090 3409 9088
      3412 9065
TIME...MOT...LOC 0229Z 277DEG 48KT 3391 9033

$$

AEG

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 17, 8:41 PM CDTSevere Thunderstorm WarningJANBolivar64 min
Oct 17, 9:02 PM CDTTornado WarningJANBolivar43 min
Oct 17, 9:07 PM CDTSevere Thunderstorm WarningJANSunflower53 min
Oct 17, 9:13 PM CDTTornado WarningJANSunflower33 min
Oct 17, 9:41 PM CDTTornado WarningJANWashington30 min
Oct 17, 9:57 PM CDTSevere Thunderstorm WarningJANGrenada63 min
Oct 17, 10:05 PM CDTTornado WarningJANGrenada40 min
Oct 17, 10:09 PM CDTTornado WarningJANLeflore36 min
Oct 17, 10:25 PM CDTSevere Thunderstorm WarningJANHolmes, Humphreys, Issaquena, Sharkey, Yazoo65 min
Oct 17, 10:29 PM CDTSevere Thunderstorm WarningJANCarroll31 min
Oct 17, 10:37 PM CDTTornado WarningJANHolmes, Humphreys, Sharkey, Yazoo53 min
Oct 17, 10:45 PM CDTSevere Thunderstorm WarningJANClay, Webster60 min
Oct 17, 11:13 PM CDTTornado WarningJANHolmes, Yazoo47 min
Oct 17, 11:27 PM CDTTornado WarningJANYazoo48 min
Oct 17, 11:36 PM CDTTornado WarningJANAttala, Madison39 min
Oct 17, 11:40 PM CDTSevere Thunderstorm WarningJANClay, Lowndes, Oktibbeha65 min
Oct 17, 11:49 PM CDTSevere Thunderstorm WarningJANMadison56 min
Oct 17, 11:59 PM CDTTornado WarningJANMadison, Rankin46 min
Oct 18, 12:03 AM CDTTornado WarningJANLeake, Scott57 min
Oct 18, 12:50 AM CDTTornado WarningJANNeshoba, Newton, Scott55 min
Oct 18, 1:02 AM CDTSevere Thunderstorm WarningJANClaiborne, Copiah, Jefferson, Lincoln58 min
Oct 18, 1:03 AM CDTTornado WarningJANHinds12 min
Oct 18, 1:07 AM CDTSevere Thunderstorm WarningJANNoxubee38 min
Oct 18, 1:27 AM CDTTornado WarningJANClarke, Lauderdale63 min
Oct 18, 1:41 AM CDTTornado WarningJANKemper, Lauderdale34 min
Oct 18, 1:44 AM CDTSevere Thunderstorm WarningJANRankin15 min
Oct 18, 1:49 AM CDTSevere Thunderstorm WarningJANFranklin, Jefferson, Lincoln56 min

Nearby

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