Climatological Report (Monthly)
Issued by NWS Eureka, CA

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000
CXUS56 KEKA 040512
CLMEKA

CLIMATE REPORT NATIONAL WEATHER SERVICE EUREKA CA

905 PM PST SAT JAN 3 2015

...................................

...THE EUREKA CA CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1886 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              77   12/30/1963
 LOW               21   12/09/1972
HIGHEST            69   12/01                MM
LOWEST             29   12/31                MM
AVG. MAXIMUM     59.0                       4.0
AVG. MINIMUM     46.5                       5.9
MEAN             52.8                       5.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        23.31   2002
 MINIMUM         0.52   1976
TOTALS           9.75              8.12    1.63
DAYS >= .01        19              17.5     1.5        8
DAYS >= .10        17              12.7     4.3        2
DAYS >= .50         6               5.4     0.6        0
DAYS >= 1.00        4               2.4     1.6        0
GREATEST
 24 HR. TOTAL    1.53   12/20 TO 12/21

SNOWFALL (INCHES)
 LIQUID 7/1      0.00                        MM

DEGREE_DAYS
HEATING TOTAL     371               533    -162      692
 SINCE 7/1       1391              1955    -564     2143
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          4                 0       4        6
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              6.0
HIGHEST WIND SPEED/DIRECTION    35/340    DATE  12/24
HIGHEST GUST SPEED/DIRECTION    52/340    DATE  12/24

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.80
NUMBER OF DAYS FAIR            3
NUMBER OF DAYS PC              5
NUMBER OF DAYS CLOUDY         23


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     HEAVY RAIN                 4
RAIN                      8     LIGHT RAIN                19
HAIL                      0     SLEET                      0
FOG                      10     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.
&&

TOTAL RAINFALL...............  9.75 DEPARTURE FROM NORMAL..... +1.63
TOTAL SINCE JANUARY 1ST...... 37.50 DEPARTURE FROM NORMAL..... -2.83
TOTAL SINCE JULY 1ST......... 21.51 DEPARTURE FROM NORMAL..... +4.46

HIGHEST SLP......... 30.40 ON 30TH LOWEST SLP.......... 29.18 ON 11TH

...REMARKS...THE MAIN THEME FOR THE MONTH WAS A SERIES OF WARM AND
WET SYSTEMS THAT CROSSED NORTHWEST CALIFORNIA BEGINNING ON THE 2ND
AND PERSISTING THROUGH THE 23RD. RAINFALL AND MODERATE TO STRONG
SOUTHERLY WINDS ACCOMPANIED THESE SYSTEMS. THE FINAL SYSTEM IN THE
SERIES WAS A PARTICULARLY POTENT ONE ON THE 24TH WITH WIND GUSTS TO
52 MPH ASSOCIATED WITH THE PASSAGE OF A COLD FRONT. RAINFALL AMOUNTS
WERE 120 PERCENT OF THE NORMAL AMOUNT FOR THE MONTH. THE HEAVIEST
RAIN WAS ON THE 20TH THROUGH THE 21ST WHEN 1.53 INCHES FELL IN 24
HOURS CAUSING SOME LOCALIZED FLOODING. A SHORT PERIOD OF HEAVY RAIN
ALSO OCCURED ON THE 10TH WHEN 1.02 INCHES FELL IN 3 HOURS. THIS
CAUSED WIDESPREAD STREET FLOODING IN EUREKA.

THE TEMPERATURES ARE A BIGGER STORY WITH AVERAGE TEMPERATURES ENDING
 5 DEGREES ABOVE NORMAL AT 52.8 DEGREES. THIS MADE IT THE SECOND
WARMEST MONTH OF DECEMBER ON RECORD WITH THE HIGHEST BEING 53.7 SET
IN 1950. NUMEROUS HIGH TEMPERATURE RECORDS WERE SET AT THE BEGINNING
OF THE MONTH. THIS STARTED WITH A RECORD HIGH OF 69 ON THE 1ST. THE
OLD RECORD WAS 68 SET IN 1939. WE TIED THE RECORD HIGH OF 67 ON THE
5TH. THE OLD RECORD WAS LAST SET IN 1997. THE RECORD HIGH WAS BROKEN
AGAIN ON THE 7TH WITH 67. THE OLD RECORD OF 65 WAS SET IN 1979. ONCE
AGAIN A RECORD HIGH OF 67 WAS SET ON THE 9TH. THE OLD RECORD OF 66
WAS SET IN 1981. ALSO ON THE 9TH A RECORD HIGH LOW TEMPERATURE OF 62
WAS SET, BREAKING THE OLD RECORD OF 59 SET IN 1937. THE TWO RECORD
TEMPERATURES ON THE 9TH COMBINED TO MAKE AN AVERAGE TEMPERATURE OF
65 FOR THE DATE. THIS IS THE HIGHEST AVERAGE TEMPERATURE RECORDED
FOR THE 9TH. THE PREVIOUS HIGH AVERAGE TEMPERATURE FOR THE 9TH WAS
62 DEGREES SET IN 1937. THIS IS ALSO THE 2ND HIGHEST AVERAGE
TEMPERATURE FOR ANY DAY IN DECEMBER. THE HIGHEST IS 66.5 SET ON
DECEMBER 3, 1979. OF INTERESTING NOTE, THE LOW OF 29 ON DECEMBER
31ST WAS NOT A RECORD FOR THE DATE BUT IT WAS THE COLDEST
TEMPERATURE RECORDED FOR THE ENTIRE CALENDAR YEAR OF 2014. THE
COLDEST DAY OF THE YEAR WAS THE VERY LAST DAY OF THE YEAR.






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