Alert archive / Mississippi / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 40, NWS Jackson, MS

February 1, 20125 counties in Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Feb 1, 2012, 6:37 PM CST for 5 counties in Mississippi. It was in force for 53 min. 2 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, 6:37 PM CST (00:37 UTC)
Expired: Feb 1, 2012, 7:30 PM CST
In force: 53 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Choctaw County, MS, Clay County, MS, Montgomery County, MS, Oktibbeha County, MS, Webster County, MS

The radar

The Columbus AFB radar (KGWX), 76 km from the middle of the area, began a volume at 00:41 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, 6:50 PM CST	TSTM WND DMG	2 N Bellefontaine, MS	A FEW TREES WERE BLOWN DOWN.
Feb 1, 7:09 PM CST	TSTM WND DMG	1 Sw Mantee, MS	A FEW TREES WERE BLOWN DOWN ACROSS NE WEBSTER CO.

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 00:00Z, 0.6 hours before the alert went out and 156 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1685 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: -161 m²/s²
0-3 km storm-relative helicity: -137 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

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

173 
WUUS54 KJAN 020037
SVRJAN
MSC019-025-097-105-155-020130-
/O.NEW.KJAN.SV.W.0040.120202T0037Z-120202T0130Z/

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

THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CHOCTAW COUNTY IN CENTRAL MISSISSIPPI...
  SOUTHEASTERN MONTGOMERY COUNTY IN NORTH CENTRAL MISSISSIPPI...
  WEBSTER COUNTY IN NORTH CENTRAL MISSISSIPPI...
  WESTERN CLAY COUNTY IN NORTHEAST MISSISSIPPI...
  THIS INCLUDES THE CITY OF MONTPELIER...
  WESTERN OKTIBBEHA COUNTY IN NORTHEAST MISSISSIPPI...

* UNTIL 730 PM CST

* AT 637 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM 15 MILES NORTHWEST OF EMBRY TO 14 MILES WEST OF EMBRY TO 29
  MILES SOUTHWEST OF EMBRY MOVING EAST AT 45 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  BELLEFONTAINE...EUPORA...CLARKSON...MATHISTON...CUMBERLAND...
  SHERWOOD...CHESTER...REFORM...MABEN...ACKERMAN...PHEBA...GRIFFITH
  AND PALA ALTO

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 BASEMENT OR SMALL INTERIOR ROOM.

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

&&

LAT...LON 3380 8871 3341 8892 3328 8904 3329 8956
      3346 8943 3346 8950 3373 8950 3374 8904
      3376 8903 3376 8894 3382 8893 3382 8873
TIME...MOT...LOC 0037Z 287DEG 37KT 3384 8944 3357 8955
          3339 8973

$$

BYB

1 follow-up statement

929 
WWUS54 KJAN 020116
SVSJAN

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

MSC097-020126-
/O.CAN.KJAN.SV.W.0040.000000T0000Z-120202T0130Z/
MONTGOMERY MS-
716 PM CST WED FEB 1 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MONTGOMERY COUNTY
IS CANCELLED...

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

LAT...LON 3382 8873 3380 8871 3342 8892 3330 8903
      3328 8905 3329 8946 3337 8946 3346 8934
      3374 8917 3374 8904 3376 8903 3376 8894
      3382 8893
TIME...MOT...LOC 0116Z 287DEG 37KT 3370 8898 3344 8910
          3326 8928

$$

MSC019-025-105-155-020130-
/O.CON.KJAN.SV.W.0040.000000T0000Z-120202T0130Z/
WEBSTER MS-OKTIBBEHA MS-CLAY MS-CHOCTAW MS-
716 PM CST WED FEB 1 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CST
FOR CHOCTAW...WESTERN CLAY...WESTERN OKTIBBEHA AND EASTERN WEBSTER
COUNTIES...

AT 716 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM MANTEE TO REFORM TO FRENCH CAMP
MOVING EAST AT 45 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
ACKERMAN...PHEBA...STURGIS...GRIFFITH AND PALA ALTO

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 3382 8873 3380 8871 3342 8892 3330 8903
      3328 8905 3329 8946 3337 8946 3346 8934
      3374 8917 3374 8904 3376 8903 3376 8894
      3382 8893
TIME...MOT...LOC 0116Z 287DEG 37KT 3370 8898 3344 8910
          3326 8928

$$

BYB

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 1, 6:48 PM CST	Severe Thunderstorm Warning	JAN	Attala, Choctaw, Montgomery, Winston	57 min
Feb 1, 7:27 PM CST	Severe Thunderstorm Warning	JAN	Clay, Lowndes, Oktibbeha	63 min
Feb 2, 2:29 AM CST	Dense Fog Advisory	JAN	Clarke, Covington, Forrest, Franklin, Jasper, Jefferson Davis and 6 more	6 hr

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.