The NWS Storm Prediction Center has issued a
Severe Thunderstorm Watch for portions of
northeast Arkansas
extreme southern Illinois
extreme western Kentucky
southeast Missouri
extreme northwest Tennessee
Effective this Friday night and Saturday morning from 640 PM
until 200 am CDT.
Hail to 1 inch in diameter... thunderstorm wind gusts to 70
mph... and dangerous lightning are possible in these areas.
The Severe Thunderstorm Watch area is approximately along and 90
statute miles east and west of a line from 10 miles north
northeast of Jefferson City Missouri to 25 miles south southwest
of Dyersburg Tennessee. For a complete depiction of the watch
see the associated watch outline update (wous64 kwns wou2).
Remember... a Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings. Severe thunderstorms can and occasionally
do produce tornadoes.
Other watch information... continue... ww 749... ww 750... ww 751...
Discussion... expanding clusters of intense thunderstorms expected to
continue to pose primarily a damaging wind threat through this
evening. Activity is developing within very unstable conditions and
along residual outflow reinforced frontal zone draped NW-se across
the region. Large scale ascent may be enhanced as weak MCS tracks
across nrn MO while narrow belt of 30-40kt nwly mid level flow may
aid storm persistence/intensity. Bulk of activity is currently
exhibiting multicellular characteristics where storm mergers in
highly unstable air should support damaging downburst winds. With
time... these mergers may allow a larger cluster of storms to persist
and spread esewd into wrn KY/TN with wind damage and marginal hail
threats continuing.
Aviation... a few severe thunderstorms with hail surface and aloft
to 1 inch. Extreme turbulence and surface wind gusts to 60 knots.
A few cumulonimbi with maximum tops to 550. Mean storm motion
vector 29025.
... Carbin
