Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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000 CXUS51 KBUF 050610 CLMROC CLIMATE REPORT NATIONAL WEATHER SERVICE BUFFALO NY 1223 PM EST MON DEC 1 2014 ................................... ...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF NOVEMBER 2014... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1871 TO 2014 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 80 11/02/1933 LOW 1 11/30/1875 HIGHEST 70 11/24 67 11/06 LOWEST 15 11/19 7 11/30 AVG. MAXIMUM 45.3 48.0 -2.7 45.0 AVG. MINIMUM 32.1 33.0 -0.9 30.0 MEAN 38.7 40.5 -1.8 37.5 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 5 1.4 3.6 3 DAYS MIN <= 32 15 14.8 0.2 15 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 7.72 1927 MINIMUM 0.33 1904 TOTALS 2.41 2.94 -0.53 2.81 DAYS >= .01 16 20 DAYS >= .10 5 9 DAYS >= .50 1 0 DAYS >= 1.00 0 0 GREATEST 24 HR. TOTAL 0.79 11/06 TO 11/07 11/26 TO 11/27 SNOWFALL (INCHES) RECORDS TOTAL 24.9 1996 TOTALS 9.1 7.3 1.8 13.3 SINCE 7/1 9.1 7.4 1.7 13.3 SNOWDEPTH AVG. 0 MM MM 1 DAYS >= 1.0 2 2.3 -0.3 5 GREATEST SNOW DEPTH 3 11/21 7 11/28 11/20 11/27 24 HR TOTAL 2.9 11/17 11/27 TO 11/27 DEGREE_DAYS HEATING TOTAL 783 735 48 817 SINCE 7/1 1280 1368 -88 1372 COOLING TOTAL 0 0 0 0 SINCE 1/1 542 539 3 660 ........................................................ WIND (MPH) AVERAGE WIND SPEED 10.9 HIGHEST WIND SPEED/DIRECTION 35/260 DATE 11/24 HIGHEST GUST SPEED/DIRECTION 43/250 DATE 11/25 DATE 11/24 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.80 NUMBER OF DAYS FAIR 0 NUMBER OF DAYS PC 8 NUMBER OF DAYS CLOUDY 22 AVERAGE RH (PERCENT) 67 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 1 RAIN 7 LIGHT RAIN 15 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 6 LIGHT SNOW 13 SLEET 0 FOG 17 FOG W/VIS <= 1/4 MILE 0 HAZE 5 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && ...SNOWY START TO WINTER... AFTER A FINE FALL...THE MONTH OF NOVEMBER QUICKLY TURNED TO WINTER`S CHILL...WIND AND SNOW. SEVERAL COLD AIRMASSES SURGED SOUTHWARD ACROSS THE GREAT LAKES THIS MONTH WITH THE COLDEST AIRMASS TRIGGERING A HISTORIC LAKE EFFECT SNOW EVENT TO THE SOUTHWEST OF ROCHESTER OFF LAKE ERIE. THE AVERAGE TEMPERATURE FOR THE MONTH OF NOVEMBER WAS 38.7F DEGREES...WHICH IS ABOUT 2 DEGREES BELOW NORMAL. THE WARMEST DAY THIS MONTH WAS 70F ON THE 24TH. THERE WAS ONE RECORD SET...THE 26F DEGREE READING ON THE 18TH TIED WITH 1951 FOR THE COLDEST MAXIMUM TEMPERATURE. THERE WERE A COUPLE OTHER BRIEF WARM STRETCHES THIS MONTH WITH EACH REACHING INTO THE 60S. HOWEVER THESE WARM SPELLS ONLY LASTED ABOUT THREE DAYS EACH AND ENDED WITH THE NEXT SURGE OF ARCTIC AIR. TOTAL PRECIPITATION FOR NOVEMBER WAS 2.41 INCHES...WHICH IS ABOUT A HALF INCH BELOW NORMAL. THE NUMBER OF DAYS (16) WITH MEASURABLE RAINFALL DID FINISH ABOVE NORMAL BY A DAY...AND THERE WERE ONLY 5 DAYS THAT DID NOT MEASURE AT LEAST A TRACE OF RAIN OR SNOW. THERE WERE NO SIGNIFICANT RAIN EVENTS THIS MONTH...WITH THE GREATEST RAINFALL COMING ON THE 1ST WHEN 0.53 INCHES OF RAIN FELL. TOTAL SNOWFALL WAS 9.1 INCHES FOR THE MONTH AT THE AIRPORT...WHICH IS ABOUT 2 INCHES ABOVE NORMAL. THERE WERE 10 DAYS WITH MEASURABLE SNOWFALL...WHICH IS 4 MORE THAN NORMAL. THE HEMISPHERIC PATTERN THIS MONTH FEATURED A STRONG RIDGE OF HIGH PRESSURE OVER ALASKA AND THE WESTERN US...WITH A TROUGH OF LOW PRESSURE OVER THE EASTERN HALF OF THE UNITED STATES. THIS AMPLIFIED PATTERN TRANSLATED TO LATE FALLS WARMTH BEING REPLACED BY INCREASING OUTBREAKS OF ARCTIC AIR FROM THE NORTH. THROUGH THE FIRST TWO WEEKS OF NOVEMBER THERE WERE TWO BRIEF WARM-UPS...THE 3RD-6TH AND THE 10TH-12TH. AFTER THE FIRST WARM-UP A COLD FRONT BROUGHT A FEW FLAKES OF SNOW ON THE 7TH...AND THEN ON THE 8TH THE FIRST OFFICIAL 32F READING OF THE WINTER SEASON WAS RECORDED. THIS IS THE 5TH LATEST FIRST OCCURRENCE OF A 32F READING AT THE ROCHESTER AIRPORT IN 144 YEARS OF RECORD. AFTER THE SECOND WARM-UP A COLD FRONT BROUGHT OUR FIRST MEASURABLE SNOWFALL ON THE 13TH OF THE MONTH. TEMPERATURES REMAINED BELOW NORMAL THROUGH THE THIRD WEEKEND OF THE MONTH...AND THEN THE STAGE WAS SET FOR AN EPIC LAKE EFFECT SNOW EVENT DOWNWIND OF LAKE ERIE. A DEEP UPPER LEVEL LOW WAS SITUATED OVER THE WESTERN GREAT LAKES WITH COLD SOUTHWEST WINDS RUSHING OVER THE WARM LAKE WATERS OF LAKE ERIE. THE SNOWBANDS IMPACTED COMMUNITIES AROUND THE BUFFALO AREA...AND POINTS EAST INTO GENESEE AND WYOMING COUNTIES THE GREATEST. HOWEVER WINDS DID BRING THE HEAVY SNOW AS FAR INLAND AS THE SOUTHWESTERN CORNER OF MONROE COUNTY...WHERE CLOSE TO A FOOT OF SNOW FELL THROUGH THE EVENT...WITH THE AIRPORT ONLY RECEIVING JUST A FEW INCHES OF SNOW. AFTER THIS EPIC LAKE EFFECT SNOW EVENT...GUSTY SOUTHERLY WINDS BROUGHT TEMPERATURES UP TO 70F BY MONDAY THE 24TH WHICH QUICKLY MELTED THE SNOW COVER AROUND THE GENESEE VALLEY. THIS SNOWMELT HAD LITTLE IMPACT ON AREA CREEKS. THE MONTH FINISHED QUIET...WITH JUST NUISANCE SNOWS ON THE 25TH AND 26TH OF THE MONTH. SOUTHWEST WINDS DOMINATED THE MONTH...AND THESE WINDS WERE A BIT GUSTY AS THE MONTH AVERAGED 10.9 MPH. THE LAKE ONTARIO WATER TEMPERATURE DROPPED FROM 56F AT THE START OF THE MONTH...DOWN TO 43F BY THE END OF THE MONTH. IN ALL...A COLD AND WINTRY NOVEMBER FOR ROCHESTER. && THOMAS $$

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