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The expiration time in the watch graphic is amended if the watch is
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SEL0
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 450
NWS Storm Prediction Center Norman OK
625 PM CDT Thu Aug 19 2021
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Extreme northeast Colorado
Northwest Kansas
Southwest Nebraska
* Effective this Thursday night from 625 PM until Midnight CDT.
* Primary threats include...
A few tornadoes possible
Scattered damaging wind gusts to 70 mph likely
Scattered large hail events to 1.5 inches in diameter possible
SUMMARY...Clusters of supercells will likely persist through the
late evening and early overnight hours, as the storm environment
becomes more favorable for a few tornadoes, in addition to damaging
winds and large hail.
The tornado watch area is approximately along and 65 statute miles
east and west of a line from 70 miles northwest of North Platte NE
to 20 miles south southeast of Goodland KS. For a complete depiction
of the watch see the associated watch outline update (WOUS64 KWNS
WOU0).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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...CONTINUE...WW 449...
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 1.5 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 550. Mean
storm motion vector 24020.
...Thompson
