WW 155 TORNADO AR OK TX 212140Z – 220600Z

WW 0155 Image

Tornado Watch Number 155
NWS Storm Prediction Center Norman OK
440 PM CDT Fri Apr 21 2017

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  western Arkansas
  southeast Oklahoma
  north centrtal and northeast Texas

* Effective this Friday afternoon and Saturday morning from 440
  PM until 100 AM CDT.

* Primary threats include...
  A few 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...A few supercells are expected to develop in vicinity of a
cold front and convectively reinforced boundary, and some storms may
evolve into line segments. Large hail, damaging wind and a few
tornadoes will be possible with this activity this evening.

The tornado watch area is approximately along and 110 statute miles
east and west of a line from 20 miles east northeast of Poteau OK to
45 miles south southeast of Fort Worth TX. 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 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean
storm motion vector 26035.


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