SPC Severe Thunderstorm Watch 486

WW 486 SEVERE TSTM IA MN 060235Z - 060800Z

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 486
NWS Storm Prediction Center Norman OK
935 PM CDT Sat Sep 5 2020

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Central and Eastern Iowa
  Southern Minnesota

* Effective this Saturday night and Sunday morning from 935 PM
  until 300 AM CDT.

* Primary threats include...
  Widespread large hail and isolated very large hail events to 2.5
    inches in diameter likely
  Scattered damaging wind gusts to 70 mph possible

SUMMARY...Thunderstorms are expected to intensify this evening
across southern Minnesota and build southeastward into central and
eastern Iowa.  A few intense thunderstorms are expected, capable of
very large hail and perhaps a gusty/damaging wind threat.

The severe thunderstorm watch area is approximately along and 70
statute miles north and south of a line from 50 miles west of
Redwood Falls MN to 20 miles east 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.

&&

AVIATION...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 500. Mean storm motion vector
30030.

...Hart

Read more

from SPC Forecast Products http://www.spc.noaa.gov/products/watch/ww0486.html