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URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 375
NWS Storm Prediction Center Norman OK
255 PM CDT Wed Jun 28 2017
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
* Effective this Wednesday afternoon and evening from 255 PM
until 1000 PM CDT.
* Primary threats include...
A few tornadoes possible
Scattered large hail and isolated very large hail events to 2.5
inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
SUMMARY...In the wake of early-day storms, strong to severe
thunderstorm development should continue to occur with a steadily
moistening and destabilizing air mass. While large hail and damaging
winds should be the most common hazards, relatively strong low-level
shear and the influence of subtle residual boundaries could yield a
few tornadoes through the mid/late afternoon hours into this
The tornado watch area is approximately along and 105 statute miles
east and west of a line from 40 miles northeast of Waterloo IA to 40
miles southwest of Lamoni IA. For a complete depiction of the watch
see the associated watch outline update (WOUS64 KWNS WOU5).
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 500. Mean
storm motion vector 27030.