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URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 623
NWS Storm Prediction Center Norman OK
400 PM CDT Thu Aug 15 2024

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Southern Iowa
  Northern Missouri

* Effective this Thursday afternoon and evening from 400 PM until
  1100 PM CDT.

* Primary threats include...
  Scattered damaging winds likely with isolated significant gusts
    to 75 mph possible
  Scattered large hail likely with isolated very large hail events
    to 2 inches in diameter possible
  A tornado or two possible

SUMMARY...Widely scattered thunderstorms are expected to form this
afternoon into this evening across southern Iowa/northern Missouri
in an environment that supports supercells.  Large hail of 1-2
inches in diameter, damaging gusts of 60-75 mph and an isolated
tornado or two will be possible.

The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 60 miles north
northwest of Saint Joseph MO to 55 miles east southeast of Ottumwa
IA. For a co*plete depiction of the watch see the associated watch
outline update (WOUS64 KWNS WOU3).

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.

&&

AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
29030.

...Thompson