"Intense Fall Cyclone"
Severe Weather of November 15, 2006
An intense fall cyclone developed over the region
and produced an episode of severe weather which included tornadoes.
This strong weather system developed as a very strong "jet
stream", with winds between 160-200 mph, slammed into Oregon
and Washington State. All that energy moved over the Rocky Mountains
and caused a strong area of surface low pressure to develop. This
low intensified as it moved east across the Red River Valley and
then lifted across Arkansas and into Tennessee as it deepened
to 990 mb! The strength of this deepening low caused warm and
unstable air to lift northward across Louisiana and into central
Mississippi. It was this northward moving warm front that became
the focus of an area where tornadic supercell thunderstorms could
thrive in an unstable and highly sheared environment.
This large and powerful storm system produced numerous
tornadoes across the south and south eastern United States where
many were of the strong (F2 or F3) variety. Within the Jackson,
MS forecast area, there were a total of 5 tornadoes to impact
the counties serviced. Two F3s, one in Lamar County and the other
in Jones County. The Jones County tornado actually contained a
satellite tornado, F1, which briefly rotated around the parent
tornado. Next was an F1 tornado in southern Marion County which
was actually the end of a strong tornado that moved out of Walthall
County. Lastly, a brief F1 tornado occurred in central Lamar County.
Tornadoes were not the only type of severe weather, scattered
wind damage also occurred across northeast Louisiana and portions
of central Mississippi between midnight and 10 am Wednesday.
The following pictures are satellite images of the
developing cyclone. The image on the left represents the development
stage and the time when the tornadic storms were occurring. The
image on the right represents a mature cyclone.
Click on the pictures below for additional information (damage pictures, radar images, etc.)
for the counties affect by the severe weather.
Lamar County, MS |
Jones County, MS |
Additional surveys will be conducted in the coming
days and this page will be updated with more damage pictures,
tornado track maps, and radar pictures as they become available.
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