Area Forecast Discussion
Issued by NWS Las Vegas, NV

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FXUS65 KVEF 302222

Area Forecast Discussion
National Weather Service Las Vegas NV
322 PM PDT MON MAY 30 2016

.SYNOPSIS...A few thunderstorms may develop again on Tuesday, but
should be few and far between. A significant warming trend will
begin Tuesday and peak over the weekend, when high temperatures will
be well above normal and near records.

.DISCUSSION...Weak showers and occasional isolated thunderstorms
were tracking southwest through Lincoln, Mohave, and northeast Clark
Counties this afternoon. Lower levels are very dry, so strong winds
are the main concern. These storms should die off after sunset. For
tomorrow, heights and mid level temps rise just a little, which
should reduce coverage of storms a little from this afternoon. By
Wednesday, upper level ridge will be moving overhead, squashing
convective development and turning the focus to heat. Temperatures
will climb through the week, with MOS guidance numbers looking
downright scary by the weekend, showing highs of 107 to 109 in Las
Vegas. Bias-corrected and best-performing guidances are a tad lower,
showing highs of 105 to 107. This still translates to a high risk
heat situation, especially considering that temperatures have been
below normal recently. The main concerns begin in the Colorado River
Valley, Death Valley, Las Vegas, and northeast Clark County on
Friday, spread to much of San Bernardino County on Saturday, then
retreat to the Colorado River Valley on Sunday. In the interest of
simplicity, issued an Excessive Heat Watch for Friday and Saturday
covering Saturday`s affected areas, and deferred Sunday to future
shifts. It`s been a prolonged Spring, but the first real taste of
Summer is on the way. Time to prepare.

.AVIATION...For McCarran...Light winds expected through Tuesday
favoring easterly directions in the afternoon hours. Wind speeds
through the day look to remain at or below 9 knots. Otherwise,
mostly sunny skies expected with few-sct clouds above 10k feet
developing in the late afternoon. There is an outside chance of
thunderstorm outflow winds to affect the terminal late this
afternoon. If it does occur winds would generally be northerly
around 10-20 kts.

For the rest of southern Nevada...northwest Arizona...and southeast
California...Fair weather with light winds are expected for most
areas through Tuesday. A few high based showers and thunderstorms
will occur into this evening across northeast Clark...southern
Lincoln...and northern Mohave Counties. Main impacts will be gusty
winds up to 30 kts in the vicinity of any storm.

.SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report
any significant weather according to standard operating procedures.



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