Alert archive / Mississippi / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 39, NWS Jackson, MS

February 1, 2012Carroll County, Grenada County, Montgomery County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Feb 1, 2012, 5:43 PM CST for Carroll County, Grenada County, Montgomery County, Mississippi. It was in force for 62 min. 5 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, 5:43 PM CST (23:43 UTC)
Expired: Feb 1, 2012, 6:45 PM CST
In force: 62 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Carroll County, MS, Grenada County, MS, Montgomery County, MS

The radar

The Columbus AFB radar (KGWX), 141 km from the middle of the area, began a volume at 23:43 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, 5:58 PM CST	TSTM WND DMG	Holcomb, MS	A FEW TREES WERE BLOWN DOWN AROUND THE HOLCOMB AREA.
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.
Feb 1, 6:35 PM CST	TSTM WND GST 50	Lodi, MS	A TREE WAS DOWNED IN THE LODI AREA

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, 11.7 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-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.

337 
WUUS54 KJAN 012343
SVRJAN
MSC015-043-097-020045-
/O.NEW.KJAN.SV.W.0039.120201T2343Z-120202T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
543 PM CST WED FEB 1 2012

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CARROLL COUNTY IN NORTH CENTRAL MISSISSIPPI...
  GRENADA COUNTY IN NORTH CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITY OF GRENADA...
  MONTGOMERY COUNTY IN NORTH CENTRAL MISSISSIPPI...
  THIS INCLUDES THE CITY OF WINONA...

* UNTIL 645 PM CST

* AT 543 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS
  WERE LOCATED ALONG A LINE EXTENDING FROM 18 MILES NORTHWEST OF
  HOLCOMB TO 12 MILES NORTHWEST OF AVALON TO 26 MILES WEST OF AVALON
  MOVING SOUTHEAST AT 50 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  LEFLORE...TEOC...BEW SPRINGS...MALMAISON...JEFFERSON...NORTH
  CARROLLTON...ELLIOTT...COILA...DUCK HILL...GORE SPRINGS...
  MISTERTON...SWEATMAN...VAIDEN...LODI...KILMICHAEL AND POPLAR CREEK

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WINDS OF 70 MPH CAN SERIOUSLY DAMAGE MOBILE HOMES AND OUTBUILDINGS...
AND CAUSE ROOF DAMAGE TO WELL BUILT HOMES AND STRUCTURES. NUMEROUS
DOWNED TREES MAY OCCUR...POSSIBLY RESULTING IN SERIOUS INJURY AND
PROPERTY DAMAGE.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES. WHILE NOT IMMEDIATELY
LIKELY...A TORNADO MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT
QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS
A BASEMENT OR SMALL INTERIOR ROOM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CST
WEDNESDAY EVENING FOR SOUTHEAST ARKANSAS AND NORTHEAST LOUISIANA AND
NORTHWESTERN MISSISSIPPI. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN
EFFECT UNTIL 1100 PM CST WEDNESDAY EVENING FOR NORTHEASTERN
MISSISSIPPI.

&&

LAT...LON 3387 8976 3386 8950 3346 8950 3346 8943
      3329 8956 3329 8971 3346 9014 3346 9010
      3365 9010 3368 9013 3382 9012 3383 8994
      3390 8992 3390 8977
TIME...MOT...LOC 2343Z 296DEG 42KT 3396 9009 3371 9023
          3352 9047

$$

BYB

1 follow-up statement

774 
WWUS54 KJAN 020020
SVSJAN

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

MSC015-043-097-020045-
/O.CON.KJAN.SV.W.0039.000000T0000Z-120202T0045Z/
MONTGOMERY MS-GRENADA MS-CARROLL MS-
620 PM CST WED FEB 1 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CST
FOR CARROLL...EASTERN GRENADA AND MONTGOMERY COUNTIES...

AT 620 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM 7 MILES NORTHWEST OF GORE SPRINGS TO JEFFERSON TO COILA MOVING
SOUTHEAST AT 50 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DUCK
HILL...MISTERTON...WINONA...SWEATMAN...LODI...VAIDEN...KILMICHAEL AND
POPLAR CREEK

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WINDS OF 60 MPH CAN BRING DOWN TREES...POSSIBLY RESULTING IN INJURY
AND PROPERTY DAMAGE. ROOFS OF MOBILE HOMES AND OUTBUILDINGS COULD BE
DAMAGED...AND MINOR ROOF DAMAGE TO WELL BUILT HOMES AND STRUCTURES
COULD OCCUR.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES. WHILE NOT IMMEDIATELY
LIKELY...A TORNADO MAY STILL DEVELOP. IF A TORNADO IS SPOTTED...ACT
QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS
A SMALL INTERIOR ROOM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM CST
WEDNESDAY EVENING FOR NORTHEASTERN MISSISSIPPI.

&&

LAT...LON 3386 8950 3346 8950 3346 8943 3329 8956
      3329 8971 3345 9013 3346 9010 3350 9010
      3387 8976
TIME...MOT...LOC 0020Z 293DEG 42KT 3382 8962 3357 8977
          3338 9001

$$

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, 5:48 PM CST	Tornado Warning	JAN	Carroll, Grenada	23 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2012 Every severe thunderstorm warning 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.