MIL-OSI USA: SPC Severe Thunderstorm Watch 424

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Source: US National Oceanic and Atmospheric Administration

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.Note: Click for Watch Status Reports.
SEL4

URGENT – IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 424
NWS Storm Prediction Center Norman OK
215 PM CDT Sun Jun 16 2024

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
Far Eastern Iowa
Northern Illinois
Far Northwest Indiana
Southern Wisconsin
Lake Michigan

* Effective this Sunday afternoon and evening from 215 PM until
800 PM CDT.

* Primary threats include…
Scattered damaging wind gusts to 70 mph likely
Isolated large hail events to 1.5 inches in diameter possible
A tornado or two possible

SUMMARY…A small bowing cluster of thunderstorms should continue to
increase in size and intensity this afternoon as it spreads
east-northeastward across northern Illinois and southern Wisconsin.
Severe/damaging winds around 60-70 mph should be the main threat,
but isolated hail up to 1-1.5 inches in diameter and a brief tornado
also appear possible.

The severe thunderstorm watch area is approximately along and 65
statute miles north and south of a line from 65 miles west southwest
of Rockford IL to 50 miles north of Valparaiso IN. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU4).

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
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
25035.

…Gleason

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