Climatological Report (Monthly)
Issued by NWS Eureka, CA
Issued by NWS Eureka, CA
727 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. $$