Public Information Statement
Issued by NWS Las Vegas, NV

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NOUS45 KVEF 030919
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AZZ001>003-036-CAZ519>527-NVZ014>022-030920-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
220 AM PDT TUE MAY 3 2016

...APRIL SUMMARY...

THE FIRST WEEK IN APRIL BEGAN LIKE MUCH OF MARCH...WARM AND DRY.
TEMPERATURES ACROSS THE REGION RAN SEVERAL DEGREES ABOVE NORMAL AND
NO PRECIPITATION WAS RECORDED. THAT ALL CHANGED ON APRIL 8 WHEN AN
AREA OF LOW PRESSURE OFF THE SOUTHERN CALIFORNIA COAST TAPPED INTO
DEEP TROPICAL MOISTURE WHICH PUSHED INTO THE REGION AND PRODUCED
WIDESPREAD RAINFALL. A SECOND AREA OF LOW PRESSURE QUICKLY FOLLOWED
MOVING INTO THE AREA THAT WAS ALREADY RICH WITH MOISTURE. THIS
SECOND SYSTEM ALSO BROUGHT ENOUGH ENERGY TO PRODUCE WIDESPREAD
THUNDERSTORMS WHICH PRODUCED AREAS OF HEAVY RAIN AND LOCALIZED FLASH
FLOODING, WHICH IS VERY UNUSUAL IN APRIL. FROM APRIL 8TH THROUGH THE
10TH, A TOTAL OF 1.03 INCHES OF RAIN FELL IN LAS VEGAS. MOST OF THE
HEAVY RAIN FELL ON APRIL 9TH WITH SEVERAL LOCATIONS BREAKING THEIR
ALL TIME DAILY RAINFALL RECORDS. THIS THREE-DAY PERIOD PRODUCED
ENOUGH RAINFALL TO CATAPULT APRIL 2016 INTO THE 3RD WETTEST APRIL ON
RECORD AND THE WETTEST APRIL SINCE 1965 IN LAS VEGAS. BISHOP
RECEIVED 0.21 INCHES ON THE 8TH AND 0.71 INCHES ON THE 9TH. BOTH OF
THESE SET NEW CALENDAR-DAY RAINFALL RECORDS. DUE TO THE HEAVY
RAINFALL A TOTAL OF 5 FLASH FLOOD WARNINGS WERE ISSUED FOR AREAS
WITHIN OUR FORECAST BOUNDARIES. THE HEAVY RAINS RESULTED IN SEVERAL
ROADS BEING WASHED OUT ALONG WITH THE NEED FOR SWIFT WATER RESCUES.
WITH ALL THE RAIN AND CLOUDY SKIES, TEMPERATURES WERE HELD TO WELL
BELOW NORMAL READINGS.

STARTING ON THE 11TH, THE AREA STARTED TO DRY OUT AND TEMPERATURES
BEGAN TO CLIMB. THE 11TH THROUGH THE 15TH CONTINUED TO SEE
TEMPERATURES BELOW NORMAL...BUT BY THE 16TH HIGH PRESSURE SET UP
OVER THE AREA AND TEMPERATURES JUMPED TO ABOVE NORMAL READINGS. THE
WARMEST DAYS OF THE MONTH OCCURRED ON THE 20TH, 21ST, AND 22ND WITH
LAS VEGAS REACHING 91 DEGREES EACH OF THOSE DAYS. DEATH VALLEY
REACHED ITS HIGHEST TEMPERATURE OF THE MONTH OF THE 21ST WHEN THE
THERMOMETER TOPPED OUT AT 103 DEGREES.

THE MOST ACTIVE PART OF APRIL OCCURRED DURING THE LAST WEEK OF THE
MONTH WHEN A SERIES OF LOW PRESSURE SYSTEMS BROUGHT WIDESPREAD RAIN
AND THUNDERSTORMS TO MUCH OF THE REGION AND SNOW IN THE HIGHER
ELEVATIONS. MEASURABLE RAIN FELL ON 4 OF THE LAST 6 DAYS IN LAS
VEGAS WITH THUNDERSTORMS RECORDED ON THREE OF THOSE DAYS. THE TOTAL
DAILY THUNDERSTORM COUNT IN LAS VEGAS WAS 5, WHICH BROKE THE RECORD
OF 4 SET IN 1941. THE HEAVIEST RAIN OCCURRED ON THE LAST DAY OF THE
MONTH WHEN 0.93 INCHES OF RAIN FELL AT MCCARRAN INTERNATIONAL
AIRPORT. NOT ONLY DID THIS BREAK THE DAILY RAINFALL RECORD, IT WAS
ALSO THE SECOND WETTEST APRIL DAY EVER RECORDED FALLING SHORT OF THE
RECORD BY 0.04 INCHES. THE TOTAL RAINFALL FOR APRIL 2016 IN LAS
VEGAS WAS 2.26 INCHES, WHICH WAS THE SECOND MOST EVER FOR APRIL AND
HAS ACCOUNTED FOR OVER HALF THE ANNUAL RAINFALL TOTAL. THE LOWEST
TEMPERATURE OF THE MONTH OCCURRED ON APRIL 30TH WHEN THE LOW
TEMPERATURE DROPPED TO 49 DEGREES. THIS WAS THE ONLY TIME ON RECORD
THAT THE COLDEST DAY OF THE MONTH OCCURRED ON THE LAST DAY.

OTHER LOCATIONS AROUND THE REGION ALSO RECEIVED THEIR TOP 5 MONTHLY
RAINFALLY TOTALS INCLUDING BARSTOW, BISHOP, NEEDLES, KINGMAN, AND
MOUNT CHARLESTON. ALTHOUGH MOUNT CHARLESTON RECEIVED 5.1 INCHES OF
SNOW, IT WAS STILL JUST OVER AN INCH BELOW NORMAL.

...LAS VEGAS...

RECORDS DATE TO 1937 AT THE OFFICIAL CLIMATE STATION.

* TEMPERATURE AT MCCARRAN INTERNATIONAL AIRPORT.

                          OBSERVED      DEPARTURE     RANK
---------------------------------------------------------------------
AVG TEMPERATURE           68.3           1.1          19TH WARMEST
AVG MAXIMUM TEMPERATURE   78.6           0.3          41ST WARMEST
AVG MINIMUM TEMPERATURE   58.0           1.9           6TH WARMEST

MONTHLY TEMPERATURE EXTREMES AT MCCARRAN

HIGHEST MAXIMUM TEMPERATURE...91 ON THE 20TH, 21ST AND 22ND
LOWEST MAXIMUM TEMPERATURE....62 ON THE 10TH
HIGHEST MINIMUM TEMPERATURE...65 ON THE 21ST AND 22ND
LOWEST MINIMUM TEMPERATURE....49 ON THE 30TH

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

LOCATION                  LOWEST TEMP/DATE     HIGHEST TEMP/DATE
---------------------------------------------------------------------
HENDERSON EXEC. AIRPORT   48 ON  30TH          90 ON 21ST
NELLIS AFB                50 ON  29TH, 30TH    91 ON 22ND
NORTH LAS VEGAS ARPT      48 ON  30TH          92 ON 22ND
NWS OFFICE                48 ON  30TH          92 ON 20TH, 21ST, 22ND

* PRECIPITATION AT MCCARRAN INTERNATIONAL AIRPORT

MONTHLY TOTAL...2.26
DEPARTURE FROM NORMAL...2.11 INCHES
NUMBER OF DAYS WITH A TRACE OR MORE...7
NUMBER OF DAYS WITH MEASURABLE - 0.01 INCH OR MORE...7
NUMBER OF DAYS WITH 0.10 INCH OR MORE...4
NUMBER OF DAYS WITH 0.50 INCH OR MORE...2
NUMBER OF DAYS WITH 1.00 INCH OR MORE...0
WETTEST DAY...0.93 ON THE 30TH
NUMBER OF DAYS WITH A THUNDERSTORM...5 (NEW MONTHLY RECORD)
TOTAL SNOWFALL...0.0

* WIND AT MCCARRAN INTERNATIONAL AIRPORT

AVERAGE WIND SPEED...8.3 MPH
HIGHEST SUSTAINED WIND...NORTHWEST AT 37 MPH ON THE 15TH
HIGHEST GUST...NORTHWEST AT 47 MPH ON THE 15TH

* PRESSURE EXTREMES REDUCED TO SEA LEVEL

HIGHEST PRESSURE...30.23 ON 6TH
LOWEST PRESSURE....29.50 ON 24TH

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

LOCATION               AVG. TEMP        DEPARTURE          RANK
                      APRIL 2016       FROM NORMAL    (IF IN TOP 10)
---------------------------------------------------------------------
BARSTOW-DAGGETT          67.2              2.4
BISHOP                   57.9              3.4         10TH WARMEST
DEATH VALLEY             79.3              2.5
NEEDLES                  73.9              1.3
MT CHARLESTON            43.9              1.5
KINGMAN                  60.4              2.0

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

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

LOCATION               MONTHLY          DEPARTURE          RANK
                        TOTAL          FROM NORMAL    (IF IN TOP 10)
---------------------------------------------------------------------
BARSTOW-DAGGETT       0.71 INCH          0.54 INCH      5TH WETTEST
BISHOP                1.04 INCH          0.78 INCH      4TH WETTEST
DEATH VALLEY          0.64 INCH          0.52 INCH      4TH WETTEST
NEEDLES               1.59 INCH          1.40 INCH      4TH WETTEST
MT CHARLESTON         3.00 INCH          1.99 INCH      2ND WETTEST
                       5.1 INCHES SNOW   -1.2 INCH
KINGMAN               1.37 INCH          0.87 INCH

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


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.

$$

ASG


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