Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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847 CXUS51 KBUF 031559 CLMROC CLIMATE REPORT NATIONAL WEATHER SERVICE BUFFALO NY 1027 AM EST THU DEC 1 2016 ................................... ...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF NOVEMBER 2016... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1871 TO 2016 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 73 11/18 78 11/04 LOWEST 27 11/12 24 11/23 AVG. MAXIMUM 54.0 48.0 6.0 55.8 AVG. MINIMUM 36.5 33.0 3.5 37.3 MEAN 45.2 40.5 4.7 46.6 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 0 1.4 -1.4 0 DAYS MIN <= 32 9 14.8 -5.8 11 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 7.72 1927 MINIMUM 0.33 1904 TOTALS 2.60 2.94 -0.34 0.97 DAYS >= .01 16 14 DAYS >= .10 7 2 DAYS >= .50 2 0 DAYS >= 1.00 0 0 GREATEST 24 HR. TOTAL 0.91 11/02 TO 11/03 11/10 TO 11/11 11/22 TO 11/22 11/22 TO 11/22 SNOWFALL (INCHES) RECORDS TOTAL 24.9 1996 TOTALS 15.0 7.3 7.7 1.2 SINCE 7/1 15.9 7.4 8.5 1.2 SNOWDEPTH AVG. 1 MM MM 0 DAYS >= 1.0 2 2.3 -0.3 0 GREATEST SNOW DEPTH 12 11/21 1 11/23 24 HR TOTAL 11.2 MM 11/22 TO 11/22 11/22 TO 11/22 11/22 TO 11/22 DEGREE_DAYS HEATING TOTAL 585 735 -150 545 SINCE 7/1 978 1368 -390 1040 COOLING TOTAL 0 0 0 0 SINCE 1/1 978 539 439 698 ................................................... WIND (MPH) AVERAGE WIND SPEED 9.0 HIGHEST WIND SPEED/DIRECTION 32/310 HIGHEST GUST SPEED/DIRECTION 46/280 DATE 11/21 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.70 NUMBER OF DAYS FAIR 4 NUMBER OF DAYS PC 9 NUMBER OF DAYS CLOUDY 17 AVERAGE RH (PERCENT) 72 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 4 RAIN 5 LIGHT RAIN 14 FREEZING RAIN 0 LT FREEZING RAIN 1 HAIL 0 HEAVY SNOW 1 SNOW 3 LIGHT SNOW 5 SLEET 3 FOG 15 FOG W/VIS <= 1/4 MILE 1 HAZE 1 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && ...MILD NOVEMBER, WITH FIRST SIGNIFICANT LAKE EFFECT SNOW... NOVEMBER WILL GO DOWN AS A PERSISTENTLY MILD MONTH, EXCEPT FOR ONE BRIEF COLD SPELL THAT GAVE THE ROCHESTER REGION ITS FIRST SIGNIFICANT SNOWFALL OF THE SEASON. PRECIPITATION FOR THE MONTH FELL JUST SHORT OF NORMAL FOR THE MONTH. THE AVERAGE TEMPERATURE FOR NOVEMBER WAS 45.2F DEGREES, PLACING THIS NOVEMBER AS 10TH WARMEST ON RECORD. TEMPERATURE RECORDS FOR ROCHESTER DATE BACK TO 1871. THERE WERE 23 DAYS THIS MONTH THAT FINISHED ABOVE NORMAL, AND THERE WAS ONE NEW TEMPERATURE RECORD. THE 73F DEGREES ON THE 18TH BROKE THE FORMER RECORD OF 71F SET BACK IN 1958. THE MILD AUTUMN ALSO BROUGHT A LATER TREE FOLIAGE CHANGE THAN NORMAL TO THE REGION. IN TOTAL THERE WERE JUST SIX DAYS THAT REACHED BELOW FREEZING THIS MONTH, WHICH IS TIED FOR 6TH FEWEST NUMBER OF DAYS FOR NOVEMBER. THERE WERE 10 DAYS THAT TOPPED THE 60F MARK, WHICH IS 5 DAYS MORE THAN NORMAL. ROCHESTER, LIKE MUCH OF THE NORTHEAST U.S. HAD BELOW NORMAL PRECIPITATION THIS MONTH, WITH 2.60 INCHES OF PRECIPITATION MEASURED. THIS IS A THIRD OF AN INCH BELOW THE NORMAL OF 2.94 INCHES. SEVERAL EVENTS BROUGHT CALENDAR DAY HALF TO ONE INCH PRECIPITATION TOTALS, BUT THERE WERE NO EXTREME OR RECORD BREAKING RAINFALL EVENTS. THE 16 DAYS OF MEASURABLE PRECIPITATION WAS ACTUALLY ONE DAY MORE THAN NORMAL. SNOWFALL FOR THE MONTH WAS ABOVE NORMAL WITH 15.0 INCHES MEASURED FROM THE 20TH TO 23RD. THE BULK OF THIS SNOW FELL DURING A GEORGIAN BAY TO LAKE ONTARIO LAKE EFFECT SNOW EVENT THAT DROPPED UP TO A FOOT AND A HALF OF FRESH SNOW ACROSS THE GENESEE VALLEY AND NORTHERN FINGER LAKES REGION. THERE WERE SEVERAL NOTABLE WEATHER EVENTS THIS MONTH. THE FIRST WAS A LONG DURATION RAIN EVENT, THIS ON THE 2ND AND 3RD OF THE MONTH WHEN WAVES OF RAIN ALONG A WEAK, AND SLOW MOVING COLD FRONTAL BOUNDARY PASSED ACROSS THE REGION. THIS BROUGHT 2-DAY RAINFALL TOTALS OF OVER AN INCH TO MUCH OF WESTERN NEW YORK. THE SECOND EVENT WAS THE FIRST SIGNIFICANT LAKE EFFECT SNOW EVENT FOR THE LOWER GREAT LAKES. A DEEP AREA OF LOW PRESSURE SLOWLY TRAVELED ACROSS SOUTHERN QUEBEC OVER THE WEEKEND OF THE 19TH TO 20TH. THIS SYSTEM TRANSPORTED ATLANTIC MOISTURE OVER THE EASTERN GREAT LAKES THAT FED ABUNDANT MOISTURE INTO BANDS OF LAKE EFFECT SNOW THAT FELL SOUTHEAST OF THE LAKES ON A COLD NORTHWEST FLOW. GREATEST SNOW TOTALS (NEARLY A FOOT) FELL TO THE SOUTHEAST OF LAKE ERIE, AND ACROSS THE GENESEE VALLEY AND NORTHERN FINGER LAKES REGION WHERE A FOOT TO A FOOT AND A HALF OF SNOW FELL. THE THIRD EVENT WAS A STRONG COLD FRONT THAT PASSED ACROSS WESTERN NEW YORK AS THE MONTH OF NOVEMBER CLOSED. THIS FRONT BROUGHT A QUARTER OF AN INCH OF RAINFALL TO METRO ROCHESTER BY MONTH`S CLOSE WITH A FEW SCATTERED THUNDERSTORMS ACROSS WESTERN NEW YORK. OUTSIDE OF THESE THREE EVENTS, THERE WERE A FEW STORM SYSTEMS THAT BROUGHT MINOR RAINFALL AMOUNTS. IN ALL A MILD MONTH FOR WESTERN NEW YORK, INTERRUPTED BRIEFLY BY THE SEASON`S FIRST NOTABLE LAKE EFFECT SNOW EVENT. AUTUMN STATS...SEPTEMBER, OCTOBER, NOVEMBER. DEPARTURE FROM NORMAL IN PARENTHESIS. TEMPERATURE... 55.4F (+4.4) 3RD WARMEST PRECIPITATION... 11.16" (+2.12) 19TH WETTEST SNOWFALL... 15.9" && THOMAS $$

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