WWUS20 KWNS 101949
SPC WW 101949
URGENT – IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 640
NWS Storm Prediction Center Norman OK
150 PM MDT Tue Sep 10 2019
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Southern South Dakota
* Effective this Tuesday afternoon and evening from 150 PM until
900 PM MDT.
* Primary threats include…
A couple tornadoes possible
Scattered large hail likely with isolated very large hail events
to 3 inches in diameter possible
Scattered damaging wind gusts to 70 mph likely
SUMMARY…Thunderstorms will intensify this afternoon over eastern
Wyoming, and along a boundary over northern Nebraska. These storms
will affect the watch area through the evening, posing a risk of
large hail, damaging wind gusts, and a few tornadoes.
The tornado watch area is approximately along and 60 statute miles
north and south of a line from 45 miles northwest of Douglas WY to
30 miles northeast of Ainsworth NE. 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.