Area Forecast Discussion
Issued by NWS Las Vegas, NV

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FXUS65 KVEF 312136
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
236 PM PDT TUE MAY 31 2016

.SYNOPSIS...A significant warming trend is underway and will peak
over the weekend, with dangerously hot temperatures expected Friday
through Sunday.
&&

.DISCUSSION...Radar returns have been confined to southeast Mohave
County today, and with warming aloft moving in, expect dry weather
areawide at least through Friday. Any thunderstorm chances Saturday
through Monday should be confined to the Sierra and nearby mountain
ranges. Heat remains the big story. Heat Impact Levels show high to
very high risk in roughly the same areas for Friday and Saturday as
it showed yesterday. However, high risk has spread into Kingman and
very high risk into other parts of AZ zone 3 for Saturday. In
addition, the high and very high risk areas are larger on Sunday
than they were yesterday. After considering this and also
coordinating with WFO PSR, chose to upgrade the Excessive Heat Watch
to a Warning, expand it to cover AZ zone 3, and also extend it
through Sunday. Still expecting cooling Monday as low pressure moves
in from the Pacific.
&&

.AVIATION...For McCarran...Easterly wind components could pose
runway configuration issues Wednesday and Thursday afternoons. Hot
temperatures, which will peak over the weekend, may also cause
density altitude concerns. No other significant weather is expected
through the weekend.

For the rest of southern Nevada...northwest Arizona...and southeast
California...Dry weather is expected areawide at least through
Friday. Temperatures will rise a few degrees each day through
Saturday, with density altitude concerns possible over the weekend.
&&

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

$$

Morgan

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