The NWS Storm Prediction Center has issued a
Tornado Watch for portions of
south Texas
coastal waters
Effective this Thursday morning and evening from 700 am until 600
PM CDT.
Tornadoes... hail to 0.5 inch in diameter... thunderstorm wind
gusts to 70 mph... and dangerous lightning are possible in these
areas.
The Tornado Watch area is approximately along and 65 statute
miles either side of a line from 45 miles north of Palacios Texas
to 40 miles northwest of Laredo Texas. For a complete depiction
of the watch see the associated watch outline update (wous64 kwns
wou4).
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.
Other watch information... this Tornado Watch replaces Tornado
Watch number 741. Watch number 741 will not be in effect after
700 am CDT.
Discussion... very moist and moderate to strongly-sheared low-lvl
environment in nrn quadrant of T.D. Dolly will remain favorable for
updrafts/storms with low-lvl rotation/possible tornadoes. Sfc
heating and weak convergence along arc of confluence extending N/NE
from circulation center may Foster expansion of existing
shower/storm coverage in outer fringe of circulation later today.
Aviation... tornadoes and a few severe thunderstorms with hail
surface and aloft to 0.5 inch. Extreme turbulence and surface
wind gusts to 60 knots. A few cumulonimbi with maximum tops to
500. Mean storm motion vector 15035.
... Corfidi
