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WWUS20 KWNS 090947

SEL1

SPC WW 090947

ARZ000-OKZ000-TXZ000-091700-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 11

NWS Storm Prediction Center Norman OK

345 AM CST Sat Mar 9 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Extreme western Arkansas

  Southeastern Oklahoma

  North-central and northeast Texas



* Effective this Saturday morning from 345 AM until 1100 AM CST.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 2

    inches in diameter possible

  Scattered damaging wind gusts to 70 mph possible

  A tornado or two possible



SUMMARY...The severe-hail and wind threats are expected to increase

through mid/late morning local time, as a belt of thunderstorms

fills in from eastern Oklahoma to north-central Texas.  Activity

then will cross the watch area moving eastward to northeastward.  A

tornado cannot be ruled out, and some parts of the region may need a

watch upgrade in a few hours, if organization of the tornado threat

increases beyond more than a brief/marginal basis.



The severe thunderstorm watch area is approximately along and 75

statute miles east and west of a line from 25 miles south of

Stephenville TX to 35 miles west northwest of Poteau OK. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU1).



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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 10...



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 550. Mean storm motion vector

24035.



...Edwards

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