Public Information Statement
Issued by NWS Las Vegas, NV

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NOUS45 KVEF 042049
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AZZ001>003-036-CAZ519>527-NVZ014>022-050900-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
1249 PM PST WED MAR 4 2015 /149 PM MST WED MAR 4 2015/

...SPRING SPRUNG IN FEBRUARY BUT WINTER WAS NOT ENTIRELY A NO
SHOW...

FEBRUARY WILL BE REMEMBERED FOR THE REMARKABLE STRETCH OF WARM AND
DRY WEATHER THAT DOMINATED THE FIRST THREE WEEKS OF THE MONTH.
FOLLOWING THE WARM WEATHER THAT PERSISTED DURING DECEMBER 2014 AND
JANUARY 2015 NUMEROUS TREES ACROSS THE LAS VEGAS VALLEY BEGAN TO
SPROUT LEAVES OR FLOWER BLOSSOMS DURING THE MONTH WITH MOST DOING
SO AT LEAST 2-3 WEEKS EARLIER THAN NORMAL. DESPITE A PATTERN FLIP IN
THE FINAL WEEK OF THE MONTH, FEBRUARY 2015 STILL FINISHED AS THE
WARMEST FEBRUARY ON RECORD ON MANY LOCATIONS ACROSS THE MOJAVE
DESERT AND SOUTHERN GREAT BASIN.

A WEAK SYSTEM PRODUCED LIGHT PRECIPITATION ACROSS PORTIONS OF INYO
AND SAN BERNARDINO COUNTIES IN CALIFORNIA AND CLARK COUNTY IN NEVADA
ON THE 7TH AND 8TH. OTHERWISE, HIGH PRESSURE ALOFT WAS AROUND DURING
MOST OF THE FIRST 3 WEEKS OF THE MONTH. THERE WERE TWO PERIODS WHEN
MOST LOCATIONS SAW THEIR WARMEST READINGS OF THE MONTH - FROM THE
7TH THROUGH THE 9TH AND AGAIN ON THE 13TH AND 14TH.

A PATTERN FLIP FINALLY TOOK PLACE ON THE WEEKEND OF THE 21ST AND
22ND WHEN A COLD STORM SYSTEM DROPPED SOUTH TOWARD THE MOJAVE
DESERT. THIS STORM PLUNGED SNOW LEVELS ON THE NIGHT OF THE 22ND INTO
THE MORNING OF THE 23RD WITH SNOW FALLING AS LOW AS 2500 FEET.
ACCUMULATIONS WERE NOTED AS LOW AS 2700 FEET. THE SNOW THAT FELL WAS
WET AND THUS HEAVY AND WEIGHED DOWN MANY TREES. IT ALSO CREATED AN
UNUSUAL SIGHT OF FLOWERING TREES AND LEAFED TREES WITH SNOW COVERING
THEM. THIS WAS THE MOST SIGNIFICANT PRECIPITATION EVENT OF THE MONTH
FOR THE AREA. FOLLOWING THIS STORM MOST LOCATIONS SET THEIR LOWEST
READING OF THE MONTH BETWEEN THE 23RD AND 25TH.

FOLLOWING A SHORT-LIVED WARM-UP, ANOTHER COLDER STORM SYSTEM
APPROACHED ON THE 27TH RESULTING IN INCREASING WINDS WITH GUSTS OVER
40 MPH IN NORTHWESTERN SAN BERNARDINO COUNTY. DAYTIME HEATING AND AN
UNSTABLE ATMOSPHERE RESULTED IN SCATTERED LIGHT SHOWERS DEVELOPING
THAT DAY BY THE LATE AFTERNOON AND EVENING AND AGAIN ON THE 28TH.

ALTHOUGH DROUGHT CONDITIONS REMAINED IN PLACE ACROSS THE AREA AT THE
CLOSE OF THE MONTH, THE WET CONDITIONS IN THE LAST WEEK OF THE MONTH
KEPT THE DROUGHT FROM FURTHER DETERIORATING.

...LAS VEGAS...

RECORDS DATE TO 1937 AT THE OFFICIAL CLIMATE STATION.

* TEMPERATURE AT MCCARRAN INTERNATIONAL AIRPORT

                         OBSERVED     DEPARTURE    RANK
--------------------------------------------------------------------
AVG TEMPERATURE          60.0         +7.1         WARMEST EVER
AVG MAXIMUM TEMPERATURE  70.8         +8.3         WARMEST EVER
AVG MINIMUM TEMPERATURE  49.3         +5.9         WARMEST EVER

MONTHLY TEMPERATURE EXTREMES AT MCCARRAN

HIGHEST MAXIMUM TEMPERATURE...79 ON THE 15TH
LOWEST MAXIMUM TEMPERATURE...49 ON THE 23RD
HIGHEST MINIMUM TEMPERATURE...60 ON THE 9TH
LOWEST MINIMUM TEMPERATURE...38 ON THE 23RD

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

LOCATION               LOWEST TEMP/DATE       HIGHEST TEMP/DATE
--------------------------------------------------------------------
HENDERSON EXEC. ARPT   35 ON 23RD             78 ON 14TH
NELLIS AFB             38 ON 23RD             79 ON 9TH & 13TH
NORTH LAS VEGAS ARPT   38 ON 23RD             79 ON 9TH
NORTH LAS VEGAS CO-OP  39 ON 23RD             80 ON 9TH & 13TH
NWS OFFICE             35 ON 23RD             79 ON 7TH, 8TH & 9TH

* PRECIPITATION AT MCCARRAN INTERNATIONAL AIRPORT

MONTHLY TOTAL...0.54 INCH
DEPARTURE FROM NORMAL...-0.22 INCH
NUMBER OF DAYS WITH A TRACE OR MORE...2
NUMBER OF DAYS WITH MEASURABLE - 0.01 INCH - OR MORE...2
WETTEST DAY...0.37 INCH ON THE 23RD
NUMBER OF DAYS WITH A THUNDERSTORM...0
TOTAL SNOWFALL...0.0 INCH

PRECIPITATION TOTALS WERE GREATEST ON THE WEST SIDE OF THE VALLEY
WHERE TOTALS EXCEED THREE-QUARTERS OF AN INCH. THE LOWEST TOTALS
WERE IN THE EAST-CENTRAL PART OF THE VALLEY.

LOCATION                         TOTAL            SOURCE
---------------------------------------------------------------------
RED ROCK DETENTION BASIN         0.87 INCH        CCRFCD
SUMMERLIN                        0.84 INCH        COCORAHS
SUMMERLIN CENTRE                 0.80 INCH        NWS EMPLOYEE
MOUNTAIN`S EDGE                  0.73 INCH        NWS EMPLOYEE
TROPICANA & BUFFALO              0.72 INCH        COCORAHS
ANTHEM                           0.67 INCH        CCRFCD
HENDERSON EXECUTIVE AIRPORT      0.67 INCH        AWSS
TENAYA & WASHINGTON              0.66 INCH        COCORAHS
PITTMAN WASH AT WIGWAM           0.63 INCH        CCRFCD
OAKEY & JONES                    0.61 INCH        COCORAHS
PROVIDENCE                       0.61 INCH        COCORAHS
NWS OFFICE                       0.55 INCH        NWS STAFF
NORTH LAS VEGAS AIRPORT          0.51 INCH        ASOS
SAHARA & VALLEY VIEW             0.50 INCH        COCORAHS
ALIANTE                          0.47 INCH        CCRFCD
EAST LAKE MEAD PARKWAY           0.44 INCH        COCORAHS
EQUESTRIAN & FOOTHILLS           0.43 INCH        CCRFCD
NELLIS AFB                       0.41 INCH        ASOS
CRAIG & LOSEE                    0.39 INCH        CO-OP OBSERVER
DOWNTOWN LAS VEGAS               0.35 INCH        CCRFCD
FLAMINGO WASH AT NELLIS          0.28 INCH        CCRFCD

* WIND AT MCCARRAN INTERNATIONAL AIRPORT

AVERAGE WIND SPEED...7.6 MPH
DEPARTURE FROM NORMAL...+0.3 MPH
HIGHEST SUSTAINED WIND...SOUTHWEST AT 29 MPH ON THE 28TH
HIGHEST GUST...SOUTH AT 36 MPH ON THE 28TH

* PRESSURE EXTREMES REDUCED TO SEA LEVEL

HIGHEST PRESSURE...30.28 INCHES ON THE 12TH
LOWEST PRESSURE...29.47 INCHES ON THE 28TH

* NOTABLE EVENTS DURING THE MONTH:

LAS VEGAS SET A RECORD FOR THE WARMEST FEBRUARY EVER DATING BACK TO
1937. THE AVERAGE TEMPERATURE THIS PAST MONTH WAS 60.0 DEGREES. THIS
BROKE THE OLD RECORD OF 58.7 DEGREES SET IN 1995. THE NORMAL AVERAGE
FEBRUARY TEMPERATURE IS 52.9 DEGREES. THE WARM FEBRUARY WEATHER IN
LAS VEGAS WAS A COMBINATION OF VERY WARM HIGH AND LOW TEMPERATURES.
THE AVERAGE HIGH WAS 70.8 DEGREES WHICH BROKE THE PREVIOUS WARMEST
AVERAGE HIGH FOR FEBRUARY OF 70.7 SET IN 1995. THERE WERE AN
INCREDIBLE 19 DAYS WITH A HIGH OF 70 DEGREES OR GREATER. THE NORMAL
IS 6 SUCH DAYS AND THE PREVIOUS RECORD WAS 17 SUCH DAYS SET IN 1947
AND TIED IN 1995. THE AVERAGE FEBRUARY LOW TEMPERATURE WAS 49.3
DEGREES WHICH BROKE THE PREVIOUS RECORD OF 46.6 SET IN 1995.

AN ALL-TIME RECORD HIGH MINIMUM TEMPERATURE FOR THE MONTH WAS SET ON
FEBRUARY 9TH WHEN THE LOW TEMPERATURE ONLY FELL TO 60 DEGREES. THIS
BROKE THE PREVIOUS RECORD OF 59 SET ON FEBRUARY 26, 1989 AND TIED ON
FEBRUARY 27, 2014 AND FEBRUARY 7, 2015. THIS WAS ALSO THE EARLIEST
60 DEGREE LOW TEMPERATURE EVER SET IN LAS VEGAS. THE PREVIOUS
EARLIEST 60 DEGREE OR GREATER LOW TEMPERATURE WAS 61 DEGREES ON
MARCH 3, 2013.

A COLD STORM SYSTEM THAT MOVED ACROSS SOUTHERN NEVADA SPREAD
PRECIPITATION INTO THE SPRING MOUNTAINS AND THE LAS VEGAS VALLEY
FROM SUNDAY, FEBRUARY 22ND INTO MONDAY, FEBRUARY 23RD. PRECIPITATION
INITIALLY BEGAN AS RAIN IN THE LOWER ELEVATIONS BUT STARTING LATE
SUNDAY EVENING INTO EARLY MONDAY CHANGED OVER TO SNOW AS
TEMPERATURES BEGAN TO DROP. SNOW WAS OBSERVED AS LOW AS ROUGHLY 2500
FEET EARLY MONDAY MORNING. IN MOST AREAS BETWEEN 2500 AND 3500 FEET,
THE OBSERVANCE OF SNOW CORRESPONDED TO WHEN THE HEAVIEST
PRECIPITATION INTENSITY WAS OBSERVED AND THE TEMPERATURE WAS COLD
ENOUGH TO SUPPORT SNOW. ON THE FAR WEST SIDE OF THE LAS VEGAS
VALLEY, A TOTAL OF 1.5 INCH WAS MEASURED IN SUMMERLIN AT 3100 FEET.
THIS MARKS THE FIRST TIME MEASURABLE SNOW HAS FALLEN IN SUMMERLIN
SINCE JANUARY 3, 2011 WHEN 3 INCHES FELL. THIS WAS ALSO THE MOST
SNOW TO FALL IN SUMMERLIN THIS LATE IN THE SEASON SINCE FEBRUARY 26,
1996 WHEN AN INCH FELL. UNOFFICIALLY AS MUCH AS 2 INCHES OF SNOW
FELL IN SUMMERLIN WEST. OTHER SNOW TOTALS INCLUDED 0.5 INCH AT
MOUNTAIN`S EDGE AND COATING IN ANTHEM. WET SNOW FELL BUT DID NOT
ACCUMULATE AT THE HENDERSON EXECUTIVE AIRPORT.

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

FEBRUARY 2015 RANKED AS ONE OF THE WARMEST FEBRUARIES EVER AT THE
MAJOR CLIMATE STATIONS IN THE MOJAVE DESERT AND SOUTHERN GREAT BASIN.

LOCATION               AVG. TEMP         DEPARTURE        MONTHLY
                     FEBRUARY 2014      FROM NORMAL         RANK
--------------------------------------------------------------------
BISHOP                   50.3              +8.1           WARMEST
BARSTOW-DAGGETT          59.3              +7.0         3RD WARMEST
DEATH VALLEY             66.9              +7.1           WARMEST
NEEDLES                  65.0              +6.8           WARMEST
DESERT ROCK              54.4              +7.1         2ND WARMEST
MT CHARLESTON            41.0              +8.8           WARMEST
KINGMAN                  53.0              +6.1         6TH WARMEST

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

IN CALIFORNIA...89 AT DEATH VALLEY ON THE 6TH
IN NEVADA...84 AT LAUGHLIN ON THE 9TH
IN ARIZONA...85 AT BULLHEAD CITY ON THE 14TH AND AT LAKE HAVASU CITY
             ON THE 8TH, 15TH AND 17TH

LOWEST TEMPERATURE OF THE MONTH

IN CALIFORNIA...23 AT BISHOP ON THE 24TH
IN NEVADA...10 AT SPRING VALLEY STATE PARK ON THE 17TH
IN ARIZONA...21 AT DIAMOND M RANCH ON THE 17TH, 25TH AND 26TH

PRECIPITATION TOTALS WERE BELOW NORMAL ACROSS THE AREA FOR THE
MONTH. THE GREATEST TOTALS WERE ACROSS CLARK, LINCOLN AND MOHAVE
COUNTIES WHERE BETWEEN A HALF OF AN INCH AND AN INCH FELL IN MANY
LOCATIONS EXCEPT IN THE HIGHEST ELEVATIONS. THE GREATEST TOTAL AT AN
OFFICIAL WEATHER STATION WAS AT MT CHARLESTON, NEVADA WHICH MEASURED
1.26 INCH. THE LOWEST TOTALS WERE ACROSS ESMERALDA COUNTY, NEVADA
WHERE NO PRECIPITATION WAS REPORTED AT ALL AT DYER AND SILVER PEAK.

LOCATION             MONTHLY          DEPARTURE         MONTHLY
                      TOTAL          FROM NORMAL         RANK
--------------------------------------------------------------------
BISHOP              0.17 INCH        -0.68 INCH       25TH DRIEST
BARSTOW-DAGGETT     0.56 INCH        -0.10 INCH       49TH DRIEST
DEATH VALLEY +      0.26 INCH        -0.25 INCH       38TH WETTEST
NEEDLES             0.45 INCH        -0.33 INCH       44TH WETTEST
DESERT ROCK         0.32 INCH        -0.57 INCH       15TH DRIEST
MT CHARLESTON +     1.26 INCH       -2.44 INCHES      9TH DRIEST
KINGMAN             0.61 INCH        -0.53 INCH       40TH DRIEST

+ CALCULATED USING OBSERVATIONAL DAY PRECIPITATION...WHICH IS TAKEN
AT ABOUT 8 AM EACH DAY...THUS TOTALS MAY NOT BE ENTIRELY FROM THE
MONTH.

SNOW TOTALS WERE BELOW NORMAL IN THE HIGHER ELEVATIONS BUT ABOVE
NORMAL IN LOWER ELEVATIONS IN SOME LOCATIONS. MT CHARLESTON, NV
MEASURED 11.9 INCHES OF SNOW FOR THE MONTH AT THE OFFICIAL WEATHER
STATION LOCATED AT 7450 FEET WHICH WAS 16.2 INCHES BELOW NORMAL. IN
ASPENDELL, CALIFORNIA AT 8500 FEET IN THE EASTERN SLOPES OF THE
SOUTHERN SIERRA NEVADA A TOTAL OF 15.0 INCHES FELL FOR THE MONTH.
SNOWPACK IN THE SOUTHERN SIERRA REMAINED MEAGER AT THE CLOSE OF THE
MONTH.

ELSEWHERE ACROSS THE AREA SNOW TOTALS IN LINCOLN COUNTY, NEVADA IN
THE 4000 TO 6000 FOOT ELEVATION RANGE INCLUDED 3.0 INCHES AT
CALIENTE, 1.5 INCH AT CATHEDRAL GORGE STATE PARK AND SPRING VALLEY
STATE PARK AND 0.7 INCH AT RACHEL. IN THE LOWER ELEVATIONS OF CLARK
COUNTY, NEVADA WHICH ARE BELOW 4000 FEET SNOW TOTALS INCLUDED 6.0
INCHES AT SPRING MOUNTAIN RANCH STATE PARK, 2.0 INCHES AT
SEARCHLIGHT AND 0.5 INCH AT GOODSPRINGS AND VALLEY OF FIRE STATE
PARK. THE SNOW TOTAL REPORTED AT SPRING MOUNTAIN RANCH STATE PARK
WAS THE HIGHEST TOTAL FOR A SINGLE EVENT SINCE MARCH 1991. IN MOHAVE
COUNTY, ARIZONA SNOW TOTALS ABOVE 5000 FEET INCLUDED 2.0 INCHES AT
DIAMOND M RANCH AND 6.0 INCHES AT PIPE SPRINGS NATIONAL MONUMENT.
---------------------------------------------------------------------

NOTE...NORMALS ABOVE USE THE 1981-2010 PERIOD.

PERIOD OF RECORD FOR LOCATIONS:
LAS VEGAS (1937-PRESENT)             BISHOP (1943-PRESENT)
BARSTOW-DAGGETT (1943-PRESENT)       DEATH VALLEY (1911-PRESENT)
NEEDLES (1888-PRESENT)               DESERT ROCK (1978-PRESENT)
MT CHARLESTON (1980-PRESENT)         KINGMAN (1901-PRESENT)

THE ABOVE INFORMATION IS PRELIMINARY AND IS SUBJECT TO A FINAL
REVIEW BEFORE BEING CERTIFIED BY THE NATIONAL CLIMATIC DATA CENTER.

$$

STACHELSKI






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