The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Click for Watch Status Reports
URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 408
NWS Storm Prediction Center Norman OK
440 PM CDT Tue Jul 11 2017
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Eastern North Dakota
* Effective this Tuesday afternoon and evening from 440 PM until
1100 PM CDT.
* Primary threats include...
A couple tornadoes possible
Scattered large hail likely with isolated very large hail events
to 2.5 inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
SUMMARY...Thunderstorm development is expected from 5-7 pm CDT
across eastern North Dakota, and storms will subsequently spread to
the east-southeast into Minnesota. Initial supercells will be
capable of producing a couple of tornadoes and isolated very large
hail, while storms could grow upscale into a small cluster or two
late this evening with an increase in the damaging wind threat.
The tornado watch area is approximately along and 65 statute miles
east and west of a line from 20 miles northwest of Hallock MN to 50
miles south southwest of Detroit Lakes MN. For a complete depiction
of the watch see the associated watch outline update (WOUS64 KWNS
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 2.5 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 550. Mean
storm motion vector 29025.