

907 

WWUS20 KWNS 200334

SEL8

SPC WW 200334

MNZ000-SDZ000-201000-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 488

NWS Storm Prediction Center Norman OK

1035 PM CDT Tue Sep 19 2017



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Western and central Minnesota

  Extreme eastern South Dakota



* Effective this Tuesday night and Wednesday morning from 1035 PM

  until 500 AM CDT.



* Primary threats include...

  Scattered damaging winds and isolated significant gusts to 75

    mph possible

  Isolated large hail events to 1.5 inches in diameter possible

  A tornado or two possible



SUMMARY...A band of thunderstorms will continue to move east-

northeastward across the rest of watch 487 and into this watch

overnight.  Additional damaging gusts, along with isolated large

hail, are possible before this activity weakens below severe levels

late tonight.  A brief tornado or two cannot be ruled out.



The severe thunderstorm watch area is approximately along and 55

statute miles east and west of a line from 10 miles south southeast

of Worthington MN to Bemidji MN. 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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 487...



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE and ALOFT

TO 1.5 INCHES. EXTREME TURBULENCE and SURFACE WIND GUSTS TO 65

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM

MOTION VECTOR 24035.





...Edwards

