

587 

WWUS20 KWNS 290123

SEL4

SPC WW 290123

ARZ000-LAZ000-OKZ000-TXZ000-290900-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 154

NWS Storm Prediction Center Norman OK

820 PM CDT Tue Apr 28 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Southwestern Arkansas

  Northwestern Louisiana

  Extreme southeastern Oklahoma

  North-central, central and east Texas



* Effective this Tuesday night and Wednesday morning from 820 PM

  until 400 AM CDT.



* Primary threats include...

  Widespread damaging winds and isolated significant gusts to 80

    mph likely

  Scattered large hail likely with isolated very large hail events

    to 3 inches in diameter possible

  A tornado or two possible



SUMMARY...A band of severe thunderstorms initially over Oklahoma

should organize further and surge southeastward to southward across

the watch area this evening into tonight.  Severe downdraft winds

will be a distinct hazard, with isolated gusts near hurricane force

possible.  A few storms also may produce large, damaging hail in

parts of north Texas.  A line-embedded tornado or two cannot be

ruled out as well.



The severe thunderstorm watch area is approximately along and 105

statute miles either side of a line from 55 miles southwest of

Stephenville TX to 45 miles east southeast of Texarkana AR. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU4).



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 150...WW 151...WW

152...WW 153...



AVIATION...A few severe thunderstorms with hail surface and aloft to

3 inches. Extreme turbulence and surface wind gusts to 70 knots. A

few cumulonimbi with maximum tops to 600. Mean storm motion vector

24035.



...Edwards

