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Climatological Report (Monthly)
Issued by NWS
Issued by NWS
000
CXUS55 KVEF 030106
CLMLAS
CLIMATE REPORT
NATIONAL WEATHER SERVICE LAS VEGAS, NV
506 PM PST WED JAN 2 2013
...................................
...THE LAS VEGAS NV CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2012...
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1937 TO 2012
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 78 12/02/1940
LOW 11 12/23/1990
HIGHEST 72 12/02 67 5 65 12/31
LOWEST 30 12/20 27 3 28 12/06
AVG. MAXIMUM 57.3 56.6 0.7 55.7
AVG. MINIMUM 40.8 38.7 2.1 36.6
MEAN 49.0 47.7 1.3 46.2
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 3 3.0 0.0 3
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 2.10 2004
MINIMUM 0.00 1981
1963
1958
TOTALS 0.49 0.50 -0.01 0.14
DAILY AVG. 0.02 0.02 0.00 0.00
DAYS >= .01 2 3.0 -1.0 2
DAYS >= .10 2 1.4 0.6 0
DAYS >= .50 0 0.2 -0.2 0
DAYS >= 1.00 0 0.1 -0.1 0
GREATEST
24 HR. TOTAL 0.46 12/13 TO 12/14
SNOWFALL (INCHES)
RECORDS
TOTAL 3.6 2008
24 HR TOTAL 3.6
TOTALS T 0.2 -0.2 0.0
SINCE 7/1 T
SNOWDEPTH AVG. 0
DAYS >= TRACE 1
DAYS >= 1.0 0
GREATEST
SNOW DEPTH 0
24 HR TOTAL T 12/26 TO 12/26
STORM TOTAL T
(MM/DD(HH))
DEGREE_DAYS
HEATING TOTAL 488 538 -50 577
SINCE 7/1 673 847 -174 909
COOLING TOTAL 0 0 0 0
SINCE 1/1 4032 3568 464 3540
FREEZE DATES
RECORD
EARLIEST 10/21/1949
LATEST 04/12/1967
EARLIEST 12/04 11/25
LATEST 02/28
.................................................................
WIND (MPH)
AVERAGE WIND SPEED 7.1
HIGHEST WIND SPEED/DIRECTION 31/210 DATE 12/02
HIGHEST GUST SPEED/DIRECTION 44/210 DATE 12/02
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.50
NUMBER OF DAYS FAIR 8
NUMBER OF DAYS PC 20
NUMBER OF DAYS CLOUDY 3
AVERAGE RH (PERCENT) 46
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 1
LIGHT RAIN 5 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 1 SLEET 0
FOG 2 FOG W/VIS <= 1/4 MILE 0
HAZE 0
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
&&
...LAS VEGAS...
RECORDS DATE TO 1937 AT THE OFFICIAL CLIMATE STATION.
* TEMPERATURE AT MCCARRAN INTERNATIONAL AIRPORT
OBSERVED DEPARTURE RANK
--------------------------------------------------------------------
AVG TEMPERATURE 49.0 +1.3 8TH WARMEST
AVG MAX TEMP 57.3 +0.7 37TH WARMEST
AVG MIN TEMP 40.8 +2.1 2ND WARMEST
MONTHLY TEMPERATURE EXTREMES AT MCCARRAN
HIGHEST MAXIMUM TEMPERATURE...72 ON THE 2ND
LOWEST MAXIMUM TEMPERATURE...47 ON THE 20TH
HIGHEST MINIMUM TEMPERATURE...53 ON THE 1ST AND 3RD
LOWEST MINIMUM TEMPERATURE...30 ON THE 20TH
EXTREMES ELSEWHERE IN THE LAS VEGAS VALLEY DURING THE MONTH...
LOCATION LOWEST TEMP/DATE HIGHEST TEMP/DATE
--------------------------------------------------------------------
HENDERSON EXEC. ARPT 25 ON 20TH 72 ON 2ND
NELLIS AFB 27 ON 20TH 72 ON 2ND
NORTH LAS VEGAS ARPT 27 ON 20TH 72 ON 2ND
NORTH LAS VEGAS CO-OP 28 ON 22ND 71 ON 2ND/3RD/4TH/8TH
NWS OFFICE 27 ON 20TH 73 ON 2ND
* PRECIPITATION AT MCCARRAN INTERNATIONAL AIRPORT
MONTHLY TOTAL...0.49 INCH
DEPARTURE FROM NORMAL...-0.01 INCH
NUMBER OF DAYS WITH A TRACE OR MORE...5
NUMBER OF DAYS WITH MEASURABLE - 0.01 INCH - OR MORE...2
WETTEST DAY...0.29 INCH ON THE 13TH
NUMBER OF DAYS WITH A THUNDERSTORM...1
TOTAL SNOWFALL...TRACE
PRECIPITATION TOTALS IN THE LAS VEGAS VALLEY WERE GREATEST IN THE
SOUTHEAST PORTION AND LOWEST IN THE FAR NORTHWEST PORTION.
EAST LAKE MEAD PARKWAY 0.99 INCH COCORAHS
SNWA FACILITY HENDERSON 0.98 INCH CCRFCD
LAS VEGAS WASH AT PABCO RD 0.94 INCH CCRFCD
ANTHEM 0.83 INCH CCRFCD
WEST ALIANTE 0.69 INCH NWS EMPLOYEE
GREENWAY & HEATHER 0.66 INCH COCORAHS
ROBINDALE & PECOS 0.64 INCH COCORAHS
FLAMINGO & BOULDER HIGHWAY 0.62 INCH COCORAHS
NWS OFFICE 0.59 INCH NWS STAFF
NLV - LOSEE & CRAIG 0.53 INCH CO-OP OBSERVER
LAMB & WASHINGTON 0.47 INCH CCRFCD
MOUNTAIN`S EDGE WEST 0.44 INCH NWS EMPLOYEE
TROPICANA & BUFFALO 0.43 INCH COCORAHS
HENDERSON EXECUTIVE AIRPORT 0.42 INCH AWIS
NORTH LAS VEGAS AIRPORT 0.39 INCH ASOS
OAKEY & JONES 0.37 INCH COCORAHS
DOWNTOWN LAS VEGAS 0.35 INCH CCRFCD
TENAYA & WASHINGTON 0.35 INCH COCORAHS
SUMMERLIN 0.33 INCH COCORAHS
NELLIS AFB 0.32 INCH ASOS
SUMMERLIN NORTHWEST 0.24 INCH CCRFCD
215 & FT APACHE NORTH 0.12 INCH CCRFCD
* WIND AT MCCARRAN INTERNATIONAL AIRPORT
AVERAGE WIND SPEED...7.1 MPH
DEPARTURE FROM NORMAL...+0.3 MPH
HIGHEST SUSTAINED WIND...31 MPH FROM THE SOUTHWEST ON THE 2ND
PEAK WIND GUST...44 MPH FROM THE SOUTHWEST ON THE 2ND
* PRESSURE EXTREMES REDUCED TO SEA LEVEL
HIGHEST PRESSURE...30.41 INCH ON THE 20TH
LOWEST PRESSURE...29.55 INCH ON THE 14TH
* NOTABLE EVENTS DURING THE MONTH
THE FIRST 10 DAYS OF DECEMBER WERE THE WARMEST SUCH PERIOD ON RECORD
IN LAS VEGAS BASED ON AVERAGE TEMPERATURE. THE AVERAGE TEMPERATURE
OF 56.8 DEGREES EASILY BROKE THE PREVIOUS RECORD OF 55.8 DEGREES SET
IN 1977.
ON DECEMBER 20TH THE LOW TEMPERATURE AT MCCARRAN INTERNATIONAL
AIRPORT DROPPED TO FREEZING FOR THE FIRST TIME ALL YEAR. THIS NOT
ONLY SET A RECORD FOR THE LATEST FIRST FREEZE OF THE SEASON FOR LAS
VEGAS - BREAKING THE PREVIOUS RECORD SET ON DECEMBER 19TH IN 1995
AND TIED IN 2002 - BUT ALSO SET A NEW RECORD FOR THE LONGEST STRETCH
WHERE THE TEMPERATURE AT THE OFFICIAL LAS VEGAS CLIMATE STATION HAS
REMAINED ABOVE FREEZING. THE 378 DAY STRETCH THAT RAN FROM DECEMBER
8TH 2011 THROUGH DECEMBER 19TH 2012 EASILY BROKE THE OLD RECORD 367
DAYS THAT RAN FROM DECEMBER 17TH 1994 THROUGH DECEMBER 18TH 1995.
THE TOTAL NUMBER OF 3 DAYS WITH A LOW OF 32 DEGREES OR BELOW FOR
THIS MONTH WAS EXACTLY NORMAL.
THERE WERE 5 DAYS WITH A LOW TEMPERATURE OF 50 DEGREES OR GREATER AT
MCCARRAN DURING THE MONTH WHICH BROKE THE OLD RECORD OF 4 SUCH DAYS
SET IN 2010.
SNOW AND OTHER FROZEN PRECIPITATION WAS REPORTED IN THE LAS VEGAS
VALLEY DURING THE MONTH ON SEVERAL INSTANCES. ON THE 15TH...SNOW WAS
REPORTED JUST BEFORE DAYBREAK IN THE FAR NORTHWEST PORTIONS OF
CENTENNIAL HILLS. JUST OUTSIDE OF THE LAS VEGAS CITY
LIMITS...ACCUMULATING SNOW WAS REPORTED ALONG HIGHWAY 95 NEAR LEE
CANYON ROAD WITH PHOTOS SHOWING BETWEEN A HALF AN INCH AND AN INCH
OF SNOW. AT THE NEARBY DESERT NATIONAL WILDLIFE REFUGE STATION AT
CORN CREEK...A TOTAL OF 0.2 INCH WAS MEASURED. ON THE EVENING OF THE
18TH...SCATTERED SHOWERS PRODUCED SNOW FLURRIES AND GRAUPEL MAINLY
IN THE WEST...SOUTHWEST AND SOUTH SIDES OF THE VALLEY. IN THE
MOUNTAIN`S EDGE NEIGHBORHOOD GRAUPEL EVEN COVERED THE GROUND. SNOW
PELLETS FELL IN MANY AREAS OF THE CENTRAL LAS VEGAS VALLEY JUST
AFTER 7 AM ON THE 26TH INCLUDING MCCARRAN AIRPORT AND THE NATIONAL
WEATHER SERVICE OFFICE. FINALLY ON THE 30TH A REPORT OF A SNOW AND
RAIN MIX WAS RECEIVED FROM NELLIS AIR FORCE BASE IN THE MORNING.
$$
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