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URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 271
NWS Storm Prediction Center Norman OK
635 PM MDT Fri May 26 2017
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
* Effective this Friday night and Saturday morning from 635 PM
until 200 AM MDT.
* Primary threats include...
Isolated very large hail events to 2.5 inches in diameter
Isolated damaging wind gusts to 70 mph possible
A tornado or two possible
SUMMARY...Relatively isolated storms including a couple of
supercells ongoing across eastern CO early this evening will
continue east-southeastward into western Kansas this evening.
Gradual storm mergers and a gradually increasing low-level jet may
support the evolution of one or more semi-organized
east/southeastward-moving complexes of storms. Large hail and
locally damaging winds will be the main risks.
The severe thunderstorm watch area is approximately along and 35
statute miles east and west of a line from 20 miles east of Imperial
NE to 30 miles west southwest of Garden City KS. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU1).
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
OTHER WATCH INFORMATION...CONTINUE...WW 268...WW 269...WW 270...
AVIATION...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