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589 

WWUS20 KWNS 060205

SEL5

SPC WW 060205

NDZ000-SDZ000-060800-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 155

NWS Storm Prediction Center Norman OK

905 PM CDT Tue Jun 5 2018



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  southern North Dakota

  northern South Dakota



* Effective this Tuesday night and Wednesday morning from 905 PM

  until 300 AM CDT.



* Primary threats include...

  Isolated very large hail events to 2 inches in diameter possible

  Isolated damaging wind gusts to 70 mph possible



SUMMARY...Storms will continue developing through southern North

Dakota and northern South Dakota this evening. Some supercell

structures capable of large hail are possible, but storms may

eventually evolve into an MCS with damaging wind eventually becoming

the main threat.



The severe thunderstorm watch area is approximately along and 80

statute miles north and south of a line from 65 miles north

northwest of Philip SD to 30 miles north of Fargo ND. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU5).



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 60 knots. A

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

24035.



...Dial

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