Tornado Watch 252

Issued

Jul 1, 2018, 1:04 PM EDT (17:04 UTC)

Expired

Jul 1, 2018, 7:15 PM EDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Green Bay radar (KGRB), 75 km from the middle of the area, began a volume at 17:04 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Two or more tornadoes

40%

One or more EF2 to EF5 tornadoes

10%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

40%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 973Jul 1, 12:37 PM EDT
• Mesoscale Discussion 975Jul 1, 2:37 PM EDT
• Mesoscale Discussion 977Jul 1, 4:18 PM EDT
• Mesoscale Discussion 979Jul 1, 6:05 PM EDT

167 
WWUS20 KWNS 011702
SEL2  
SPC WW 011702
MIZ000-WIZ000-LMZ000-020000-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 252
NWS Storm Prediction Center Norman OK
1205 PM CDT Sun Jul 1 2018

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Upper Michigan
  Central and Eastern Wisconsin
  Lake Michigan

* Effective this Sunday afternoon and evening from 1205 PM until
  700 PM CDT.

* Primary threats include...
  A couple tornadoes possible
  Scattered large hail and isolated very large hail events to 2
    inches in diameter possible
  Scattered damaging wind gusts to 70 mph possible

SUMMARY...Scattered strong to severe thunderstorms are expected to
form this afternoon over central Wisconsin, tracking eastward across
the watch area.  A few supercells with an associated tornado threat
may occur.  Otherwise, damaging winds and hail are the main threats.

The tornado watch area is approximately along and 70 statute miles
east and west of a line from 25 miles east northeast of Marquette MI
to 10 miles east southeast of Janesville WI. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU2).

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.

&&

AVIATION...Tornadoes and 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 500. Mean
storm motion vector 24035.

...Hart

Tornado Watches in Wisconsin, 2018Tornado Watches in Michigan, 2018Every tornado watch in 2018

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.