WWUS20 KWNS 200455
SEL1
SPC WW 200455
IAZ000-MNZ000-SDZ000-201200-
URGENT – IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 601
NWS Storm Prediction Center Norman OK
1155 PM CDT Mon Aug 19 2019
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Western and central Iowa
Far southwest Minnesota
Far southeast South Dakota
* Effective this Monday night and Tuesday morning from 1155 PM
until 700 AM CDT.
* Primary threats include…
Scattered damaging winds likely with isolated significant gusts
to 75 mph possible
Scattered large hail and isolated very large hail events to 2.5
inches in diameter possible
SUMMARY…Multiple elevated supercells will likely develop through
the early morning hours before growing upscale into a linear cluster
that may eventually bow across central to south-central Iowa.
The severe thunderstorm watch area is approximately along and 75
statute miles east and west of a line from 45 miles east of Lamoni
IA to 15 miles west northwest of Worthington MN. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU1).
PRECAUTIONARY/PREPAREDNESS ACTIONS…
REMEMBER…A Severe Thunderstorm Watch means conditions are
favorable for 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. Severe thunderstorms can and occasionally do produce
tornadoes.