First Tornado Watch issued:
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 520
NWS Storm Prediction Center Norman OK
740 AM CST Thu Dec 31 2020
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
The upper Texas coastal plain
* Effective this Thursday morning and afternoon from 740 AM until
300 PM CST.
* Primary threats include...
A few tornadoes possible
Scattered damaging wind gusts to 70 mph possible
Isolated large hail events to 1 inch in diameter possible
SUMMARY...Thunderstorms will increase in coverage and intensity
through the morning while spreading inland across the upper Texas
coast. The storm environment will gradually become more favorable
for supercells inland, with an attendant threat for a few tornadoes
and damaging winds through early to mid afternoon.
The tornado watch area is approximately along and 40 statute miles
north and south of a line from 25 miles west southwest of Angleton
TX to 20 miles north northeast of Port Arthur TX. 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.
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 21035.