Climatological Report (Monthly)
Issued by NWS Eureka, CA

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000
CXUS56 KEKA 020244
CLMEKA

CLIMATE REPORT
NATIONAL WEATHER SERVICE EUREKA CA
0700 PM PST THU FEB 1 2018

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

...THE EUREKA CA CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1886 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              78   01/12/1986
 LOW               20   01/14/1888
HIGHEST            67   01/17                MM
                        01/04
LOWEST             37   01/31                MM
                        01/26
                        01/20
AVG. MAXIMUM     56.1                       0.5
AVG. MINIMUM     43.3                       2.2
MEAN             49.7                       1.4

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        18.26   1890
 MINIMUM         0.66   1985
TOTALS           7.86              6.50    1.36
DAYS >= .01        17              16.6     0.4       17
DAYS >= .10        13              11.6     1.4       14
DAYS >= .50         5               4.8     0.2       10
DAYS >= 1.00        2               1.7     0.3        4
GREATEST
 24 HR. TOTAL    1.72   01/24 TO 01/25

SNOWFALL (INCHES)
 LIQUID 7/1        MM                        MM

DEGREE_DAYS
HEATING TOTAL     468               516     -48      614
 SINCE 7/1       2268              2471    -203     2461
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              4.4
HIGHEST WIND SPEED/DIRECTION    23/170    DATE  01/21
HIGHEST GUST SPEED/DIRECTION    37/MM     DATE  01/25

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.90
NUMBER OF DAYS FAIR            1
NUMBER OF DAYS PC              4
NUMBER OF DAYS CLOUDY         26


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     HEAVY RAIN                 0
RAIN                      7     LIGHT RAIN                20
HAIL                      1     SLEET                      0
FOG                      15     FOG W/VIS <= 1/4 MILE      5
HAZE                      4

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

&&

TOTAL RAINFALL...............  7.86 DEPARTURE FROM NORMAL.....+ 1.36
TOTAL SINCE JANUARY 1ST......  7.86 DEPARTURE FROM NORMAL.....+ 1.36
TOTAL SINCE OCT 1ST.......... 18.84 DEPARTURE FROM NORMAL.....- 3.63

HIGHEST SLP......... 30.41 ON  8 LOWEST SLP........29.95 ON 19

...REMARKS...A SERIES OF WEATHER SYSTEMS BROUGHT SLIGHTLY ABOVE
NORMAL RAINFALL TO EUREKA IN JANUARY. DAYTIME HIGH TEMPERATURES WERE
NEAR NORMAL, WHILE OVERNIGHT LOW TEMPERATURES WERE SLIGHTLY ABOVE
NORMAL. THIS WAS MAINLY DUE TO EXTENSIVE CLOUD COVER ACROSS.
ALTHOUGH TEMPERATURES WERE MAINLY NEAR NORMAL, TWO DAILY HIGH
TEMPERATURE RECORDS WERE TIED ON THE 4TH AND 17TH.

TWO SYSTEMS BROUGHT COLDER AIR IN BEHIND THE FRONT. THIS INCREASED
THE INSTABILITY BRINGING SMALL HAIL TO EUREKA ON THE 18TH AND 25TH.
EARLY MORNING THUNDERSTORMS WOKE UP MUCH ON EUREKA ON THE 25TH. ALSO
A SMALL WATERSPOUT CAME ONSHORE AT THE WOODLEY ISLAND MARINA AND
MOVED ON LAND BRIEFLY BECOMING A WEAK TORNADO ON THE 25TH.

$$



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