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000
CXUS56 KEKA 042308
CLMEKA

SFOCLMEKA 000
TTAA00 EKA 041314

CLIMATE REPORT
NATIONAL WEATHER SERVICE EUREKA CA
612 AM PDT SAT NOV 04 2023

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

...THE EUREKA CA CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1886 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             87   10/26/1993
 LOW              32   10/29/1971
HIGHEST           78   10/05         MM      MM       68
LOWEST            36   10/28         MM      MM       40
AVG. MAXIMUM    62.7               61.9     0.8     59.7
AVG. MINIMUM    47.7               46.8     0.9     48.0
MEAN            55.2               54.3     0.9     53.9
DAYS MAX >= 90     0
DAYS MIN <= 32     0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       13.04   1950
 MINIMUM        0.00   1917
TOTALS          2.09               2.31   -0.22
DAYS >= .01        8                8.7    -0.7        7
DAYS >= .10        6                4.7     1.3        0
DAYS >= .50        2                1.7     0.3        0
DAYS >= 1.00       0                0.5    -0.5        0
GREATEST
 24 HR. TOTAL   0.62   10/16 TO 10/16

 LIQUID 7/1       MM                         MM

DEGREE DAYS
HEATING TOTAL    298                331     -33      335
 SINCE 7/1       799                991    -192       MM
COOLING TOTAL      0                  0       0        0
 SINCE 1/1         0                  1      -1       MM
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              2.9
HIGHEST WIND SPEED/DIRECTION    15/350    DATE  10/01
HIGHEST GUST SPEED/DIRECTION    26/MM     DATE  10/01

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.59
NUMBER OF DAYS FAIR           10
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY         14


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     HEAVY RAIN                 0
RAIN                      3     LIGHT RAIN                 8
HAIL                      0     SLEET                      0
FOG                       8     FOG W/VIS <= 1/4 MILE     12
HAZE                      4

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

OCTOBER WAS FAIRLY TYPICAL MONTH FOR THE NORTH COAST, THAT IS TO SAY
IT WAS CONSISTENTLY INCONSISTENT. A SERIES OF COLD FRONTS SWEEPING
ACROSS THE AREA BROUGHT PERIODS OF LOW CLOUDS AND LIGHT RAIN,
FOLLOWED BY CONSISTENT OFFSHORE FLOW. OFFSHORE FLOW ACCOMPANIED VERY
CLEAR WEATHER ALONG THE COAST ALLOWING FOR BOTH WARM DAYS AND COOL
NIGHTS. OFFSHORE FLOW HELPED GENERATE BOTH THE WARMEST DAY OF THE
MONTH AT 78 AND COOLEST NIGHT AT 36. THAT NIGHT SAW WIDESPREAD FROST
EVEN NEAR SEA LEVEL. UNUSUALLY STRONG HIGH PRESSURE IN THE MIDDLE OF
THE MONTH BROKE UP THE SERIES OF FRONT, GENERATING A SHALLOW BUT
RESILIENT MARINE LAYER ALONG THE COAST. THIS PERIOD SAW NEARLY A
WEEK OF DENSE FOG EVEN DURING THE DAY. THIS PERIOD OF HIGH PRESSURE
ALSO LIKELY HELPED KEEP THE MONTHLY TOTAL RAINFALL SLIGHTLY BELOW
AVERAGE DESPITE REGULAR FRONTAL PASSAGES.

$$