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WWUS20 KWNS 091603

SEL8

SPC WW 091603

IAZ000-ILZ000-MNZ000-WIZ000-100000-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 348

NWS Storm Prediction Center Norman OK

1105 AM CDT Thu Jul 9 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Central and Eastern Iowa

  Northwest Illinois

  Southeast Minnesota

  Southwest Wisconsin



* Effective this Thursday morning and evening from 1105 AM until

  700 PM CDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  Scattered large hail events to 1.5 inches in diameter possible

  A tornado or two possible



SUMMARY...A remnant MCV (mesoscale convective vortex) will continue

to contribute to severe thunderstorm development initially across

northern Iowa into southeast Minnesota. Over time, additional storms

should develop across broader portions of eastern Iowa. Damaging

winds should be the primary hazard, but some severe hail may occur,

and a tornado cannot be entirely ruled out.



The severe thunderstorm watch area is approximately along and 110

statute miles north and south of a line from 50 miles west southwest

of Waterloo IA to 25 miles east southeast of Dubuque IA. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU8).



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

1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A

few cumulonimbi with maximum tops to 600. Mean storm motion vector

25025.



...Guyer

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