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242 

WWUS20 KWNS 201116

SEL2

SPC WW 201116

IAZ000-ILZ000-MOZ000-202000-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 602

NWS Storm Prediction Center Norman OK

615 AM CDT Tue Aug 20 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Southeastern Iowa

  Central and northern Illinois

  Northern and eastern Missouri



* Effective this Tuesday morning and afternoon from 615 AM until

  300 PM CDT.



* Primary threats include...

  Widespread damaging winds and isolated significant gusts to 80

    mph likely

  Isolated large hail events to 1.5 inches in diameter possible

  A tornado or two possible



SUMMARY...An expanding, severe complex of thunderstorms will sweep

southeastward across the watch area into early afternoon, the main

severe-weather hazard being wind.  Isolated hail and an embedded

tornado also cannot be ruled out.



The severe thunderstorm watch area is approximately along and 120

statute miles either side of a line from 10 miles west northwest of

Ottumwa IA to 20 miles east northeast of Mattoon IL. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU2).



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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 601...



AVIATION...A few severe thunderstorms with hail surface and aloft to

1.5 inches. Extreme turbulence and surface wind gusts to 70 knots. A

few cumulonimbi with maximum tops to 650. Mean storm motion vector

32045.



...Edwards

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