

307 

WWUS20 KWNS 050559

SEL6

SPC WW 050559

IAZ000-051200-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 256

NWS Storm Prediction Center Norman OK

100 AM CDT Fri Jun 5 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Central and Eastern Iowa



* Effective this Friday morning from 100 AM until 700 AM CDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 2

    inches in diameter possible

  Isolated damaging wind gusts to 70 mph possible



SUMMARY...Scattered strong to severe thunderstorms will move

east-southeastward across the region overnight. Isolated severe hail

should be the most common hazard, but locally damaging winds could

also occur, particularly if storms semi-organize into a linear

cluster, which is most probable to occur across

north-central/east-central Iowa.



The severe thunderstorm watch area is approximately along and 75

statute miles north and south of a line from 25 miles west southwest

of Fort Dodge IA to 35 miles north northeast of Cedar Rapids IA. For

a complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU6).



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 254...WW 255...



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

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

few cumulonimbi with maximum tops to 500. Mean storm motion vector

29025.



...Guyer

