SPC Severe Thunderstorm Watch 671



WW 671 SEVERE TSTM IA IL WI 012305Z – 020500Z

WW 0671 Image

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 671
NWS Storm Prediction Center Norman OK
605 PM CDT Tue Oct 1 2019

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Eastern Iowa
  Northwest Illinois
  Southern Wisconsin

* Effective this Tuesday night from 605 PM until Midnight 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
  A tornado or two possible

SUMMARY...Strong to severe thunderstorms will continue to develop
near a front that extends generally southwest-northeast across the
region. The most common severe hazard should be hail, although
locally damaging winds will also be a concern, and a tornado cannot
be ruled out mainly near the frontal boundary.

The severe thunderstorm watch area is approximately along and 50
statute miles north and south of a line from 25 miles west northwest
of Cedar Rapids IA to 30 miles east northeast of Janesville WI. For
a complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU1).

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 670...

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 550. Mean storm motion vector
24035.

...Guyer

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