Climatological Report (Monthly)
Issued by NWS Eureka, CA

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13
000
CXUS56 KEKA 022135
CLMEKA

CLIMATE REPORT
NATIONAL WEATHER SERVICE EUREKA CA
234 PM PDT MON OCT 2 2017

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

...THE EUREKA CA CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1886 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              87   09/02/2017
 LOW               36   09/22/1895
HIGHEST            87R  09/02                MM
LOWEST             45   09/23                MM
                        09/22
                        09/21
AVG. MAXIMUM     67.4                       3.7
AVG. MINIMUM     53.1                       2.7
MEAN             60.2                       3.2

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.26   1901
 MINIMUM         0.00   1929
TOTALS           1.01              0.59    0.42
DAYS >= .01         7               4.4     2.6        1
DAYS >= .10         3               1.6     1.4        0
DAYS >= .50         0               0.3    -0.3        0
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.35   09/19 TO 09/20

SNOWFALL (INCHES)
 LIQUID 7/1      0.00                      0.00

DEGREE_DAYS
HEATING TOTAL     147               239     -92      237
 SINCE 7/1        538               665    -127      684
COOLING TOTAL      13                 0      13        0
 SINCE 1/1         13                 0      13        0
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              3.6
HIGHEST WIND SPEED/DIRECTION    13/190    DATE  09/19
HIGHEST GUST SPEED/DIRECTION    21/240    DATE  09/04

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            7
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY         14


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     HEAVY RAIN                 0
RAIN                      1     LIGHT RAIN                10
HAIL                      0     SLEET                      0
FOG                      17     FOG W/VIS <= 1/4 MILE      3
HAZE                      7

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

&&

TOTAL RAINFALL...............  1.01 DEPARTURE FROM NORMAL.....+ 0.42
TOTAL SINCE JANUARY 1ST...... 38.07 DEPARTURE FROM NORMAL.....+13.71
TOTAL SINCE OCT 1ST.......... 63.84 DEPARTURE FROM NORMAL.....+23.51

HIGHEST SLP......... 30.14 ON 30 LOWEST SLP........29.78 ON  4

...REMARKS...PERSISTANT HIGH PRESSURE RIDGING WAS THE GREAT
INFLUENCE ON THE WEATHER OVER NOWRTHWEST CALIFORNIA FOR MOST OF THE
MONTH. THE AVERAGE TEMPERATURE WAS AN INCREDIBLE 3.2 DEGREES ABOVE
NORMAL AND THE FEW RAINFALL EVENTS PRODUCED .42 INCHES ABOVE AVERAGE
RAINFALL. FIVE HIGH TEMPERATURE RECORDS WERE SET BEGINING ON THE 1ST
WITH 76 BREAKING THE OLD RECORD OF 75 SET IN 1979; THE 2ND SAW A
HIGH OF 87 WHICH BROKE THE OLD RECORD OF 75 SET IN 1979 AND WHICH
ALSO TIED FOR THE HIGHEST RECORDED TEMPERATURE ON STATION WHICH WAS
SET ON OCTOBER 26, 1993. ON THE 3RD 78 BROKE THE OLD RECORD OF 74
LAST SET IN 2003; ON THE 5TH 74 WAS RECORDED WHICH BROKE THE 2013
RECORD OF 72, AND FINALLY 79 WAS REGISTERED ON THE 27TH WHICH BROKE
THE OLD RECORD OF 75 LAST SET IN IN 1970.




$$



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.