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WWUS20 KWNS 172038

SEL6

SPC WW 172038

COZ000-NMZ000-OKZ000-TXZ000-180400-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 486

NWS Storm Prediction Center Norman OK

340 PM CDT Sun Sep 17 2017



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  southeast Colorado

  eastern New Mexico

  the Oklahoma Panhandle

  the Texas Panhandle South Plains vicinity



* Effective this Sunday afternoon and evening from 340 PM until

  1100 PM CDT.



* Primary threats include...

  Isolated very large hail events to 2 inches in diameter possible

  Isolated damaging wind gusts to 70 mph possible



SUMMARY...Thunderstorms will continue to increase in coverage over

the next several hours, spreading east-northeast across the southern

High Plains region.  The strongest storms will be capable of

producing large hail and locally damaging winds this afternoon and

evening.



The severe thunderstorm watch area is approximately along and 90

statute miles east and west of a line from 60 miles northeast of

Trinidad CO to 65 miles southwest of Lubbock TX. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU6).



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

2 inches. Extreme turbulence and surface wind gusts to 60 knots. A

few cumulonimbi with maximum tops to 500. Mean storm motion vector

25035.



...Goss

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