Public Information Statement
Issued by NWS Las Vegas, NV

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000
NOUS45 KVEF 031945
PNSVEF
AZZ001>003-036-CAZ519>527-NVZ014>022-040745-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
1245 PM PDT WED JUN 3 2015

...A NORMALLY DRY MONTH TURNED WET FOR MANY DURING MAY 2015...

AFTER A WINTER SEASON THAT LACKED STORMS, AN ACTIVE LATE SPRING
WEATHER PATTERN CONTINUED ACROSS THE AREA DURING MAY. SEVERAL STORM
SYSTEMS CROSSED THE AREA DURING THE MONTH PRODUCING PRECIPITATION.
DUE TO THE TRACK OF THE STORMS, PRECIPITATION WAS MUCH MORE
PLENTIFUL ACROSS THE SOUTHERN GREAT BASIN WITH SIGNIFICANTLY LESS
FALLING ACROSS THE MOJAVE DESERT ESPECIALLY THE FURTHER SOUTH ONE
TRAVELED. IN SOME AREAS MORE PRECIPITATION FELL THIS PAST MONTH THAN
DID IN THE LAST 11 MONTHS COMBINED.

THE LATE-SEASON PRECIPITATION WAS ENOUGH TO KEEP THE DROUGHT FROM
DETERIORATING BUT NO WHERE NEAR ENOUGH TO BRING ANY REAL DROUGHT
RELIEF. HOWEVER, IT DID PUSH SNOWPACK LEVELS UP IN THE HIGHER
ELEVATIONS ABOVE 9000 FEET TO HIGHER LEVELS THAN WHAT WAS OBSERVED
IN EARLY APRIL OF THIS YEAR.

THE FREQUENT STORM SYSTEMS ALSO HELD DOWN TEMPERATURES DURING THE
MONTH. THE WARMEST WEATHER OF THE MONTH DID NOT OCCUR UNTIL THE LAST
2 DAYS OF THE MONTH. JUST ABOUT ALL LOCATIONS SET THEIR HIGHEST
READINGS OF THE MONTH ON MAY 31ST. THE COOLEST READINGS OF THE MONTH
WHERE MAINLY SET ON THE 9TH WITH A HANDFUL OF LOCATIONS IN THE
MOJAVE DESERT LOGGING THEM ON THE 16TH.

THE FIRST SYSTEM OF THE MONTH FEATURED LIGHT PRECIPITATION ON THE
4TH AND 5TH AS AN AREA OF LOW PRESSURE PASSED ACROSS SOUTHERN
CALIFORNIA. THIS SYSTEM WAS FOLLOWED BY A STRONGER AND COLDER AREA
OF LOW PRESSURE THAT PRODUCED PRECIPITATION IN PARTS OF THE AREA
FROM THE 7TH THROUGH THE 10TH. WIND GUSTS OVER 50 MPH OCCURRED IN
SOME AREAS AHEAD OF THIS SYSTEM ON THE 7TH, WITH A PEAK GUST OF 56
MPH MEASURED AT BARSTOW-DAGGETT, CALIFORNIA. SNOW ALSO FELL AS LOW
AS 3900 FEET IN BISHOP, CALIFORNIA WHERE A TRACE WAS MEASURED AND
THE FOLLOWING NIGHT AND EARLY MORNING 2 INCHES OF SNOW FELL IN DYER,
NEVADA AT 4900 FEET. THIS STORM ALSO DROPPED NOTEWORTHY SNOW IN THE
HIGHER ELEVATIONS DOWN TO 7000 FEET. A TOTAL OF 7 INCHES OF SNOW WAS
MEASURED IN ASPENDELL, CALIFORNIA AT 8500 FEET.

BACK-TO-BACK COLD LOW PRESSURE SYSTEMS IMPACTED THE AREA BETWEEN THE
14TH AND 19TH. ON THE 18TH, A THUNDERSTORM DROPPED ONE INCH DIAMETER
HAIL IN BLUE DIAMOND, NEVADA DURING THE LATE MORNING HOURS.

THE LAST ACTIVE PERIOD OF THE MONTH WAS FROM THE 21ST THROUGH THE
26TH. A COLD LOW PRESSURE SYSTEM TRIGGERED SHOWERS AND THUNDERSTORMS
FROM THE 21ST THROUGH 24TH WITH LINGERING ENERGY KEEPING ISOLATED
ACTIVITY AROUND ON THE 25TH AND 26TH. LOCALLY HEAVY SHOWERS DROPPED
OVER A FOOT OF SNOW IN PARTS OF THE SIERRA NEVADA. MINOR ROADWAY
FLOODING TOOK PLACE NEAR DYER, NEVADA ON THE 22ND WITH HEAVY
THUNDERSTORMS PRODUCING FLASH FLOODING ON THE 24TH NEAR ECHO CANYON
STATE PARK IN LINCOLN COUNTY, NEVADA AND AGAIN ON THE 25TH ON LIDA
PASS ROAD.

...LAS VEGAS...

RECORDS DATE TO 1937 AT THE OFFICIAL CLIMATE STATION.

* TEMPERATURE AT MCCARRAN INTERNATIONAL AIRPORT.

                          OBSERVED      DEPARTURE     RANK
---------------------------------------------------------------------
AVG TEMPERATURE           74.3          -3.0          34TH COOLEST
AVG MAXIMUM TEMPERATURE   84.8          -4.1          14TH COOLEST
AVG MINIMUM TEMPERATURE   63.8          -2.0          20TH WARMEST

MONTHLY TEMPERATURE EXTREMES AT MCCARRAN

HIGHEST MAXIMUM TEMPERATURE...104 ON THE 31ST
LOWEST MAXIMUM TEMPERATURE...63 ON THE 8TH
HIGHEST MINIMUM TEMPERATURE...76 ON THE 31ST
LOWEST MINIMUM TEMPERATURE...51 ON THE 8TH

EXTREMES ELSEWHERE IN THE LAS VEGAS VALLEY DURING THE MONTH...

LOCATION                  LOWEST TEMP/DATE     HIGHEST TEMP/DATE
---------------------------------------------------------------------
HENDERSON EXEC. AIRPORT   48 ON 8TH & 9TH      103 ON 31ST
NELLIS AFB                47 ON 9TH            104 ON 31ST
NORTH LAS VEGAS ARPT      50 ON 9TH            104 ON 31ST
NORTH LAS VEGAS CO-OP     50 ON 9TH            107 ON 31ST
NWS OFFICE                51 ON 16TH           106 ON 31ST

* PRECIPITATION AT MCCARRAN INTERNATIONAL AIRPORT

MONTHLY TOTAL...0.24 INCH
DEPARTURE FROM NORMAL...+0.12 INCH
NUMBER OF DAYS WITH A TRACE OR MORE...6
NUMBER OF DAYS WITH MEASURABLE - 0.01 INCH - OR MORE...5
WETTEST DAY...0.14 INCH ON THE 22ND
NUMBER OF DAYS WITH A THUNDERSTORM...4
TOTAL SNOWFALL...0.0 INCH

TOTALS ELSEWHERE AROUND THE LAS VEGAS VALLEY FOR THE MONTH WERE
HIGHEST IN A SMALL AREA OF SUMMERLIN AND IN THE ENTIRE SOUTHEAST. THE
LOWEST TOTALS WERE IN THE NORTHEAST.

LOCATION                           TOTAL            SOURCE
---------------------------------------------------------------------
SUMMERLIN - THE PASEOS/FAR HILLS   1.14 INCH        CCRFCD
HEADWORKS CHANNEL                  1.06 INCH        CCRFCD
HENDERSON EXECUTIVE AIRPORT        0.68 INCH        AWSS
ANTHEM                             0.67 INCH        CCRFCD
215 & EASTERN                      0.59 INCH        CCRFCD
EQUESTRIAN & FOOTHILLS             0.55 INCH        CCRFCD
ANN & 215                          0.55 INCH        CCRFCD
EAST LAKE MEAD PARKWAY             0.41 INCH        COCORAHS
SUMMERLIN CENTRE                   0.37 INCH        NWS EMPLOYEE
PROVIDENCE                         0.28 INCH        COCORAHS
SUMMERLIN                          0.28 INCH        COCORAHS
SAHARA & VALLEY VIEW               0.16 INCH        COCORAHS
NWS OFFICE                         0.13 INCH        NWS STAFF
TROPICANA & BUFFALO                0.11 INCH        COCORAHS
NELLIS AFB                         0.10 INCH        ASOS
TENAYA & WASHINGTON                0.10 INCH        COCORAHS
WARM SPRINGS & ARVILLE             0.10 INCH        COCORAHS
GOWAN & THOM                       0.09 INCH        COCORAHS
ALIANTE                            0.08 INCH        CCRFCD
CENTENNIAL HILLS                   0.08 INCH        CCRFCD
MOUNTAIN`S EDGE                    0.08 INCH        NWS EMPLOYEE
CRAIG & LOSEE                      0.05 INCH        CO-OP OBSERVER
DOWNTOWN LAS VEGAS                 0.04 INCH        CCRFCD
OAKEY & JONES                      0.03 INCH        COCORAHS
NORTH LAS VEGAS AIRPORT            0.02 INCH        ASOS

* WIND AT MCCARRAN INTERNATIONAL AIRPORT

AVERAGE WIND SPEED...10.5 MPH
DEPARTURE FROM NORMAL...0.0 MPH
HIGHEST SUSTAINED WIND...29 MPH FROM THE SOUTH ON THE 12TH, 14TH AND
                         22ND AND THE SOUTHWEST ON THE 13TH
HIGHEST GUST...42 MPH FROM THE SOUTHWEST ON THE 13TH

* PRESSURE EXTREMES REDUCED TO SEA LEVEL

HIGHEST PRESSURE...29.96 INCHES ON THE 10TH
LOWEST PRESSURE...29.49 INCHES ON THE 6TH

* NOTABLE EVENTS DURING THE MONTH:

THERE WERE A TOTAL OF 2 DAYS WITH A HIGH OF 100 DEGREES OR GREATER
WHICH IS 1 BELOW NORMAL. THE FIRST 100 DEGREE DAY OF THE YEAR WAS ON
MAY 30TH.

A MAY RECORD OF 22 CONSECUTIVE DAYS FROM MAY 4TH THROUGH MAY 25TH
HAD A HIGH TEMPERATURE BELOW 90 DEGREES. THE PREVIOUS MAY RECORD WAS
20 DAYS FROM MAY 1 THROUGH MAY 20, 1977 AND AGAIN IN 1983.

A TOTAL OF 4 DAYS HAD THUNDERSTORMS WHICH TIED THE ALL-TIME RECORD
FOR MAY SET IN 1965 AND TIED IN 1992.

A TOTAL OF 6 DAYS HAD PRECIPITATION DURING MAY WHICH IS THE MOST FOR
MAY SINCE 2011. THE NORMAL FOR MAY IS 3. A TOTAL OF 5 DAYS HAD
MEASURABLE PRECIPITATION WHICH SET AN ALL-TIME RECORD FOR MAY. THE
PREVIOUS RECORD WAS 4 DAYS SET IN 1949 AND TIED IN 1971, 1977, 1987
AND 1995. THE NORMAL FOR MAY IS 1.

THUNDERSTORMS DROPPED HAIL IN MANY PARTS OF THE VALLEY DURING THE
LATE MORNING HOURS OF MAY 18TH. HAIL AS LARGE AS NICKLE SIZE FELL IN
HENDERSON. THE HEAVY RAIN ALSO CAUSED SOME MINOR STREET AND POOR
DRAINAGE FLOODING IN HENDERSON.

MEASURABLE PRECIPITATION FELL FOR THE FIRST TIME EVER ON MAY 22ND AT
MCCARRAN INTERNATIONAL AIRPORT. THE AIRPORT IRONICALLY WAS THE
WETTEST PLACE IN THE VALLEY THAT DAY MEASURING 0.14 INCH. THIS
LEAVES ONLY 10 DAYS NOW IN THE OFFICIAL LAS VEGAS WEATHER RECORDS
THAT HAVE NEVER HAD MEASURABLE PRECIPITATION FALL ON THEM AT THE
OFFICIAL WEATHER STATION.

...ELSEWHERE ACROSS THE MOJAVE DESERT AND SOUTHERN GREAT BASIN...

MOST AREAS SAW ABOVE NORMAL TEMPERATURES.

LOCATION               AVG. TEMP        DEPARTURE          RANK
                       MAY 2015        FROM NORMAL
---------------------------------------------------------------------
BARSTOW-DAGGETT          71.9             -2.1         20TH COOLEST
BISHOP                   62.2             -1.1         28TH COOLEST
DEATH VALLEY             85.2             -1.4         40TH COOLEST
NEEDLES                  78.9             -2.7         46TH COOLEST
DESERT ROCK              67.6             -1.9         10TH COOLEST
MT CHARLESTON            47.9             -2.8         8TH COOLEST
KINGMAN                  64.7             -3.9         23RD COOLEST

TEMPERATURE EXTREMES ACROSS THE LAS VEGAS NATIONAL WEATHER SERVICE
AREA AT OFFICIAL WEATHER STATIONS.
---------------------------------------------------------------------
HIGHEST TEMPERATURE OF THE MONTH

IN CALIFORNIA...115 AT DEATH VALLEY ON THE 30TH AND 31ST
IN NEVADA...108 AT LAUGHLIN ON THE 31ST
IN ARIZONA...110 AT BULLHEAD CITY ON THE 31ST

LOWEST TEMPERATURE OF THE MONTH

IN CALIFORNIA...34 AT BISHOP ON THE 8TH AND 15TH
IN NEVADA...25 AT MT CHARLESTON ON THE 9TH
IN ARIZONA...25 AT DIAMOND M RANCH ON THE 9TH

PRECIPITATION TOTALS WERE GREATEST ACROSS THE SOUTHERN GREAT BASIN,
MAINLY IN LINCOLN, ESMERALDA, NORTHERN INYO AND NORTHERN MOHAVE
COUNTIES. A TOTAL OF 1 TO 3 INCHES OF FELL IN THESE AREAS DURING THE
MONTH ON AVERAGE. SEVERAL LOCATIONS SET THEIR WETTEST MAY ON RECORD:

LOCATION            NEW RECORD   OLD RECORD/YEAR      RECORDS STARTED
---------------------------------------------------------------------
BISHOP              1.39 INCH    1.30 INCH/1962       1943
CALIENTE            2.84 INCHES  2.27 INCHES/1977     1902
DYER                2.81 INCHES  2.24 INCHES/1971     1903
PIPE SPRING N.M.    2.51 INCHES  1.98 INCH/1995       1963

ACROSS THE REMAINDER OF THE AREA, AMOUNTS VARIED GREATLY LARGELY DUE
TO WHERE SHOWERS AND THUNDERSTORMS MOVED THROUGH. OVERALL, AMOUNTS
RANGED BETWEEN A FEW HUNDREDTHS AND A HALF OF AN INCH. THE DRIEST
PART OF THE AREA WAS ACROSS NORTHWEST AND CENTRAL SAN BERNARDINO
COUNTY WHERE A FEW STATIONS REPORTED NO PRECIPITATION AT ALL FOR THE
MONTH. NO PRECIPITATION AT ALL WAS REPORTED AT AMBOY, JOSHUA TREE,
TRONA AND WONDER VALLEY IN CALIFORNIA. THE HIGHEST MONTHLY TOTAL AT
AN OFFICIAL WEATHER STATION WAS 3.47 INCHES AT PIOCHE, NEVADA.

BELOW ARE SOME PRECIPITATION TOTALS AND DEPARTURES FOR A FEW STATIONS
AROUND THE AREA.

LOCATION               MONTHLY          DEPARTURE          RANK
                        TOTAL          FROM NORMAL
---------------------------------------------------------------------
BARSTOW-DAGGETT         TRACE          -0.05 INCH      14TH DRIEST
BISHOP                1.39 INCH        +1.20 INCH        WETTEST
DEATH VALLEY          0.06 INCH        +0.03 INCH      25TH WETTEST
NEEDLES               0.04 INCH        -0.05 INCH      35TH WETTEST
DESERT ROCK           0.14 INCH        -0.06 INCH      22ND DRIEST
MT CHARLESTON         1.31 INCH        +0.66 INCH      6TH WETTEST
KINGMAN               0.18 INCH        +0.05 INCH      37TH WETTEST

SNOWFALL WAS ABOVE NORMAL FOR THE MONTH IN THE HIGHER ELEVATION
STATIONS. IN THE EASTERN SLOPES OF THE SOUTHERN SIERRA NEVADA OF
CALIFORNIA, ASPENDELL AT 8500 FEET MEASURED 8.0 INCHES. THIS WAS THE
MOST SNOW TO FALL HERE IN MAY SINCE AT LEAST 2003. SOME LOCATIONS
NEARBY TOTALED OVER A FOOT OF SNOW FOR THE MONTH ESPECIALLY ABOVE
10000 FEET. A REPORT OF A FOOT OF SNOW ALONE WAS RECEIVED FROM THE
MOSQUITO FLATS CAMPGROUND ON THE 23RD. SIGNIFICANT SNOW ALSO FELL IN
THE WHITE MOUNTAINS OF INYO COUNTY. ON MT CHARLESTON, NEVADA A TOTAL
OF 2.3 INCH FELL AT THE CO-OP WEATHER STATION IN KYLE CANYON AT 7450
FEET WHICH WAS 0.2 INCH ABOVE NORMAL. HOWEVER, OVER 6 INCHES FELL IN
THE UPPER PARTS OF LEE CANYON ABOVE 9000 FEET. LOWER ELEVATIONS IN
THE SOUTHERN GREAT BASIN AND FAR NORTHERN MOHAVE COUNTY, ARIZONA
ALSO SAW SNOW. A TRACE FELL AT BISHOP, CALIFORNIA AND PIPE SPRING
NATIONAL MONUMENT IN ARIZONA AS WELL AS PIOCHE, NEVADA. DYER, NEVADA
MEASURED 2.0 INCHES OF SNOW AND 0.5 INCH FELL AT SPRING VALLEY STATE
PARK, NEVADA. THIS WAS THE MOST SNOW TO FALL IN MAY AT DYER SINCE
1998 WHEN 3.5 INCHES FELL. THIS WAS ALSO THE FIRST MAY SNOW AT BISHOP
SINCE 1998 WHEN A TRACE FELL.

---------------------------------------------------------------------

NOTE...NORMALS USE THE PERIOD OF 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 DATA...CONTACT THE OFFICE OF NOAA`S NATIONAL
CENTERS FOR ENVIRONMENTAL INFORMATION (NCEI) LOCATED IN ASHEVILLE,
NORTH CAROLINA.

$$

STACHELSKI


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