Statement as of 9:50 AM CST on December 21, 2013
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
western and central Louisiana
* effective this Saturday morning and evening from 950 am until
600 PM CST.
* Primary threats include...
several intense tornadoes possible
several damaging wind gusts to 70 mph possible
a few large hail events to 1 inch in diameter possible
The Tornado Watch area is approximately along and 90 statute
miles east and west of a line from 5 miles east southeast of
Angleton Texas to 40 miles east northeast of El Dorado Arkansas.
For a complete depiction of the watch see the associated watch
outline update (wous64 kwns wou0).
Remember... a Tornado Watch means conditions are favorable for
tornadoes and 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.
Discussion... thunderstorms are expected to intensify today while
moving rapidly northeast across the watch area. While the
atmosphere is only marginally unstable... the presence of very strong
vertical shear and intensifying large-scale forcing for ascent will
promote embedded supercells and bowing structures capable of
tornadoes --some possibly significant-- and corridors of wind
Aviation... tornadoes and 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 400.
Mean storm motion vector 22050.
Statement as of 9:44 AM CST on December 21, 2013
... Wind Advisory remains in effect until 6 PM CST this evening...
* timing... strong winds will develop by mid-morning and continue
through late this afternoon.
* Winds... south 20 to 25 mph with gusts up to 35 mph possible.
* Impacts... trucks and other high profile vehicles should use
caution especially on east to west oriented roads. Boaters on
area lakes should also be alert to rough and dangerous chop.
A Wind Advisory means that sustained winds of 20 to 34 mph are
expected. Winds this strong can make driving difficult...
especially for high profile vehicles. Use extra caution.
Winds over local waterways could be 5 mph higher than over land.
Small boats will be especially prone to capsizing.
- Tornado Watch
A tornado watch is issued when thunderstorms in and near the watch box area may produce tornadoes.
- High Wind Advisory
A high wind advisory is issued when sustained winds of 31 mph or greater are expected to occur for at least 1 hour. This advisory can also be issued if winds of 46 mph or greater are expected for any length of time.
Nearby Radar Stations