

951 

WWUS20 KWNS 132358

SEL7

SPC WW 132358

IAZ000-MNZ000-NEZ000-SDZ000-140700-



URGENT - IMMEDIATE BROADCAST REQUESTED

Tornado Watch Number 327

NWS Storm Prediction Center Norman OK

700 PM CDT Tue Jun 13 2017



The NWS Storm Prediction Center has issued a



* Tornado Watch for portions of

  Northwestern Iowa

  Central and southwestern Minnesota

  Extreme northeastern Nebraska

  Southeastern South Dakota



* Effective this Tuesday night and Wednesday morning from 700 PM

  until 200 AM CDT.



* Primary threats include...

  A couple tornadoes possible

  Scattered damaging wind gusts to 70 mph possible

  Isolated very large hail events to 2.5 inches in diameter

    possible



SUMMARY...In addition to an existing isolated supercell along the

warm front in western Minnesota, a band of thunderstorms (with

embedded supercells and potential QLCS circulations forming) will

move northeastward into the watch area over the next few hours.  The

tornado potential will be relatively maximized near that warm front,

while damaging gusts and sporadic hail are expected throughout the

convective regime.



The tornado watch area is approximately along and 60 statute miles

east and west of a line from 45 miles southeast of Yankton SD to 40

miles northeast of Alexandria MN. For a complete depiction of the

watch see the associated watch outline update (WOUS64 KWNS WOU7).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A Tornado Watch means conditions are favorable for

tornadoes and 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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 323...WW 324...WW

325...WW 326...



AVIATION...Tornadoes and a few severe thunderstorms with hail

surface and aloft to 2.5 inches. Extreme turbulence and surface wind

gusts to 60 knots. A few cumulonimbi with maximum tops to 550. Mean

storm motion vector 24035.



...Edwards

