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Issued by NWS Las Vegas, NV

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NOUS45 KVEF 020538 CCA

1037 PM PDT Thu Jun 1 2017

Corrected highest sustained wind for Las Vegas


High pressure dominated the first 5 days of the month with readings
across the region generally 5-10 degrees above normal. A trough of
low pressure approaching the coast brought the first real heat wave
of the season to the region on May 4-5. Las Vegas recorded it`s
first 100 degree temperature on the 5th while Death Valley recorded
111 degrees. Even the Owens Valley cranked up the heat with Bishop
recording 92 degrees on May 4. On May 6, the pattern took a dramitic
shift as a strong cold front moved through the region. Strong winds
along with thunderstorms developed along the front which was
followed by much cooler air. Las Vegas had recorded 100 degrees on
May 5, but by May 7 the temperature only reached 64 degrees. This
was a drop of 36 degrees over a 2 day period which ended up being
the biggest 2 day temperature drop ever recorded in May. Other areas
also experienced significant drops. Death Valley went from 109 on
the 5th to 82 degrees on the 7th. Kingman went from 91 degrees to 61
degrees and Mt. Charleston went from 73 degrees on the 5th to 40
degrees on the 7th. This cold front also provided some precipitation
across the area with the only measurable rain fall of the month
recorded on the 6th and 7th. For the next two weeks from the 7th
until the 20th, temperatures generally ranged from 5-15 degrees
below normal before high pressure reistabilished itself and brought
above normal temperatures for the remainder of the month. Overall
temperatures finished right around normal for the month with most
areas finishing within 1 degree of normal.

One other strong cold front did move through the region on the 17th
and 18th with many areas seeing the strongest winds of the month.
Las Vegas recorded a peak gust of 50 mph on the 17th and 52 mph on
the 18th. The gust of 52 mph was the second highest wind gust in May
since 2004.

...Las Vegas...

Records date to 1937 at the official climate station.

* Temperature at McCarran International Airport.

                          Observed      Departure     Rank
Avg Temperature           77.4          +0.1         21st warmest
Maximum Temperature       89.2          +0.3         38th warmest
Avg Minimum Temperature   65.6          -0.2         14th warmest

Monthly Temperature Extremes at McCarran...

Highest Maximum Temperature...102 on the 24th
Lowest Maximum Temperature.....64 on the 7th
Highest Minimum Temperature....79 on the 24th
Lowest Minimum Temperature.....51 on the 7th

Extremes elsewhere in the Las Vegas Valley during the month...

Location                  Lowest Temp/Date            Highest Temp/Date
Henderson Exec. Airport   46 on 5/8                  100 on 5/5,23,24,30
Nellis AFB                50 on 5/8                  102 on 5/24
North Las Vegas Airport   51 on 5/10                 102 on 5/24
NWS Office                49 on 5/8,19               103 on 5/23,24

* Precipitation at McCarran International Airport

Monthly Total...0.08
Departure from Normal... -0.04 inch
Number of days with a trace or more...3
Number of days with measurable - 0.01 inch or more...1
Number of days with 0.10 inch or more...0
Number of days with 0.50 inch or more...0
Number of days with 1.00 inch or more...0
Wettest day...0.07 on the 3rd
Number of days with a thunderstorm...1
Total Snowfall...0.0

* Wind at McCarran International Airport

Average wind speed...8.0 mph
Highest sustained wind...Northeast at 46 mph on the 18th
Highest gust...Northeast at 52 mph on the 18th

* Pressure extremes reduced to sea level

Highest Pressure...30.05 on the 11th
Lowest Pressure....29.37 on the  6th

...Elsewhere across the Mojave Desert and Southern Great Basin...

Location               Avg. Temp        Departure          Rank
                        May 2017        from Normal
Barstow-Daggett          73 9             -0.1        34th warmest (tied)
Bishop                   63.5             +0.2        28th warmest
Death Valley             87.5             +2.7        25th warmest
Needles                  82.5             +0.2        28th warmest
Mt. Charleston           51.3             +0.6        12th warmest
Kingman                  66.8             +1.1        42nd coolest

Below are some precipitation totals and departures for some stations
around the area.

Location               Monthly          Departure          Rank
                        Total          from Normal
Barstow-Daggett          T inch         -0.05 inch      14th driest  (tied)
Bishop                0.35 inch         +0.16 inch      18th wettest (tied)
Death Valley             T inch         -0.03 inch      42nd driest  (tied)
Needles               0.18 inch         +0.09 inch      17th driest  (tied)
Mt. Charleston        0.08 inch         -0.57 inch       6th driest
                       0.3 inch snow     -1.8 inch      20th lowest
Kingman               0.19 inch         -0.13 inch      38th wettest

Note...normals use the period 1981-2010.

Period of record for stations:
Las Vegas (1937-present)              Bishop (1943-present)
Barstow-Daggett (1943-present)        Death Valley (1911-present)
Needles (1888-present)                Desert Rock (1977-present)
Mt. Charleston (1980-present)         Kingman (1901-present)

The above information is preliminary and subject to a final review.
For official certified the Office of Noaa`s National
Centers for Environmental Information (NCEI) located in Asheville,
North Carolina.

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