Local forecast by
"City, St" or zip code |
|
|
You are at: NWS »
NWS SRH »
NWS Jackson »
Storm of the Month
|
We had two strong contenders for the FEBRUARY WINNER this year. However, a
classic supercell that developed 45 miles south of the radar in south central
Mississippi stole the show as the winner on the 27th. This storm intensified
over Lincoln and Lawrence counties between 3 and 4 pm that afternoon.
The radar signatures were typical of severe thunderstorms and good advance
warning resulted for the F2-F3 tornado that struck southwest of New Hebron
about 330 pm. VILs peaked at 54 kg/m*m while the 50dBz tilted core reached to
just under 33,000 ft and exhibited a strong Weak Echo Region(updraft into the
storm). All of our algorithms performed nicely as the Mesocyclone, Hail and
Severe Hail categories stood out along with the storm structure itself. The
first Cell Attribute Table and Mesocyclone Table images below indicated the
initial stages of the tornado development. The last 4-Panel Storm Relative
Velocity Image, the Mesocyclone Table and Maximum Shears Time Section were
taken 26 minutes later as the mature tornado peaked just southwest of New
Hebron where at least 4 houses sustained major damage.
Normally, Shears of at least 10-12 would indicate tornado formation.
 |
 A Composite Reflectivity View(top),
Vertical Cross Section(bottom) at 310 pm CST
|
 |
| Cell Table Attributes(top), Mescyclone Table
Attributes(bottom) at 310pm CST
|
Note: Velocities
(green-motion toward radar ; red-motion away from radar)
A 4-Panel View of 0.5 Degree Storm Relative
Velocity(u.left), 1.5Deg Storm Relative Velocity(u.right), 2.4 Degree Storm
Relative Velocity(l.left), 3.4Deg Storm Relative Velocity(l.right) at 336pm CST
|
 |
A Mescyclone Table Attributes(top), Time Section of Shear
Measurements(bottom) at 336pm CST
|
Return to Storm of the Month Index
Page
|
|
weather.gov 
