SPC Severe Thunderstorm Watch 208

WW 208 SEVERE TSTM AR KS MO OK 111755Z - 120200Z

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 208
NWS Storm Prediction Center Norman OK
1255 PM CDT Thu May 11 2017

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Northwest Arkansas
  Southern Kansas
  Southwest Missouri
  North-central and eastern Oklahoma

* Effective this Thursday afternoon and evening from 1255 PM
  until 900 PM CDT.

* Primary threats include...
  Scattered large hail likely with isolated very large hail events
    to 3 inches in diameter possible
  Isolated damaging wind gusts to 70 mph possible
  A tornado or two possible

SUMMARY...Severe thunderstorms are expected to develop and increase
this afternoon, initially across north-central and northeast OK
along and north-northeast of a surface low and residual outflow
boundary. These storms will spread into additional parts of eastern
OK, southern KS, southwest MO, and western AR through late afternoon
and early evening. Large hail should be the most common threat, but
locally damaging winds will also be possible along with some tornado
risk, mainly near the residual outflow boundary across parts of
north-central to northeast/east-central OK.

The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 15 miles west of Enid
OK to 30 miles east northeast of Fayetteville AR. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU8).

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
3 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
25025.

...Guyer

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