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WWUS20 KWNS 212208

SEL7

SPC WW 212208

KSZ000-MOZ000-220500-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 537

NWS Storm Prediction Center Norman OK

510 PM CDT Sun Jul 21 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  East central and southeast Kansas

  West central and southwest Missouri



* Effective this Sunday afternoon from 510 PM until Midnight CDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  Isolated large hail events to 1 inch in diameter possible

  A tornado or two possible



SUMMARY...Thunderstorms are beginning to develop from southwest

Missouri into eastern Kansas along a slow-moving outflow boundary.

Strong instability is present south of the boundary, which will

support some expansion and intensification of the storms through

this evening.  Transient supercell structures may occur in the first

couple of hours of the watch, when an isolated/brief tornado cannot

be ruled out with storms along the boundary.  Otherwise, storms will

evolve into multicell clusters with the primary threats of damaging

outflow winds and marginally severe hail.



The severe thunderstorm watch area is approximately along and 60

statute miles north and south of a line from 70 miles west southwest

of Emporia KS to 50 miles east northeast of Springfield MO. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU7).



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

1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few

cumulonimbi with maximum tops to 600. Mean storm motion vector

31020.



...Thompson

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