Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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000 CXUS51 KBUF 050251 CLMROC CLIMATE REPORT NATIONAL WEATHER SERVICE BUFFALO NY 1034 PM EDT FRI NOV 4 2016 ................................... ...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 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 91 10/05/1951 LOW 19 10/25/1879 HIGHEST 80 10/18 78 10/12 LOWEST 31 10/31 30 10/19 AVG. MAXIMUM 62.8 59.6 3.2 59.6 AVG. MINIMUM 45.6 41.5 4.1 42.5 MEAN 54.2 50.6 3.6 51.0 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 1 3.3 -2.3 6 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 8.67 1873 MINIMUM 0.08 1924 TOTALS 5.26 2.72 2.54 2.78 DAYS >= .01 14 16 DAYS >= .10 10 7 DAYS >= .50 2 2 DAYS >= 1.00 1 0 GREATEST 24 HR. TOTAL 2.53 10/21 TO 10/21 10/28 TO 10/28 10/27 TO 10/28 10/28 TO 10/28 SNOWFALL (INCHES) RECORDS TOTAL 5.0 1906 TOTALS 0.9 0.1 0.8 T SINCE 7/1 0.9 0.1 0.8 T SNOWDEPTH AVG. 0 MM MM 0 DAYS >= 1.0 0 0.0 0.0 0 GREATEST SNOW DEPTH T 10/27 0 MM 24 HR TOTAL 0.9 MM 10/18 TO 10/18 10/28 TO 10/28 10/28 TO 10/28 DEGREE_DAYS HEATING TOTAL 342 452 -110 427 SINCE 7/1 393 633 -240 495 COOLING TOTAL 15 5 10 1 SINCE 1/1 978 539 439 698 ......................................................... WIND (MPH) AVERAGE WIND SPEED 8.3 HIGHEST WIND SPEED/DIRECTION 26/250 HIGHEST GUST SPEED/DIRECTION 36/300 DATE 10/22 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.70 NUMBER OF DAYS FAIR 7 NUMBER OF DAYS PC 9 NUMBER OF DAYS CLOUDY 15 AVERAGE RH (PERCENT) 74 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 4 RAIN 8 LIGHT RAIN 16 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 1 LIGHT SNOW 2 SLEET 0 FOG 13 FOG W/VIS <= 1/4 MILE 1 HAZE 0 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && ...CHANGEABLE WEATHER, MILD AND A RETURN TO MORE UNSETTLED DAYS... OCTOBER FEATURED SEVERAL PATTERN CHANGES AS EXTENDED SUMMER`S WARMTH FLEETED, AND COOLER, UNSETTLED WEATHER ENTERED. MILD TEMPERATURES RULED THE FIRST TWO-THIRDS OF THE MONTH BEFORE THE PATTERN CHANGED AND COOLER AIR CAMPED OVER THE REGION THROUGH MUCH OF THE END OF THE MONTH. THERE WAS AN INCREASE IN UNSETTLED WEATHER THIS MONTH, WITH ACCUMULATING SNOWFALL AND RAIN EVENTS THAT PUSHED THE OVERALL PRECIPITATION TO WELL ABOVE NORMAL. TEMPERATURES THIS MONTH AVERAGED 54.2F DEGREES WHICH IS JUST OVER 3 AND A HALF DEGREES ABOVE NORMAL. MILD AIR RULED THE FIRST 21 DAYS OF THE MONTH, WITH 16 DAYS ABOVE NORMAL. THERE WERE 10 DAYS THAT REACHED 70F THIS MONTH, WHICH THREE DAYS MORE THAN NORMAL. THE TEMPERATURE DROPPED TO 31F ON THE MORNING OF THE 31ST, MARKING THE FIRST SUCH FREEZING TEMPERATURE OF THE FALL SEASON. THE LOW TEMPERATURE OF 64F DEGREES ON THE 18TH WAS THE WARMEST LOW TEMPERATURE FOR THE DATE, BREAKING THE OLD RECORD OF 60F SET BACK IN 1968. PRECIPITATION TOTALED 5.26 INCHES, WHICH IS TWO AND A HALF INCHES ABOVE NORMAL, AND RANKED 9TH WETTEST OCTOBER. THIS PRECIPITATION WAS WELCOMED AS THE RAINFALL PUT A DENT IN THE MAJOR DROUGHT THAT HAS REMAINED ACROSS THE REGION SINCE EARLY SPRING. THE MAJOR PRECIPITATION EVENT THIS MONTH WAS A FRONTAL SYSTEM, WITH SEVERAL MOISTURE LADEN WAVES THAT PASSED ACROSS THE REGION ON THE 20TH THROUGH EARLY ON THE 22ND. THIS SYSTEM PRODUCED 2 TO 6 INCHES OF RAINFALL ACROSS WESTERN NEW YORK, WITH THE HIGHEST TOTALS ACROSS THE GENESEE VALLEY. AT THE ROCHESTER AIRPORT THIS SYSTEM PRODUCED A NEW DAILY RECORD OF 2.53 INCHES ON THE 21ST. THE FIRST SNOW FLAKES FLEW LATE ON THE 26TH, AND ACCUMULATED 0.9 INCHES ON THE 27TH. THE MONTH BEGAN UNSETTLED AS A SLOW MOVING UPPER LEVEL LOW SPIRALED ACROSS THE REGION. A SUB TROPICAL RIDGE THEN EXPANDED ACROSS THE REGION AFTER THE DEPARTURE OF THIS UPPER LEVEL LOW, BRINGING FINE AUTUMN WEATHER WITH TEMPERATURES TOPPING THE 70F MARK AND BRILLIANT BLUE SKIES. UNSETTLED WEATHER RETURNED FOR THE WEEKEND OF THE 8TH AND 9TH AS ANOTHER TROUGH OF LOW PRESSURE PASSED BY AND INTERACTED WITH TROPICAL MOISTURE. BEHIND THIS TROUGH THE FIRST TRUE COLD AIR OF THE MONTH ARRIVED WITH HIGHS REMAINING IN THE UPPER 50S. THIS COOLER PERIOD WAS BRIEF, JUST A FEW DAYS, AS MILDER SOUTHERLY WINDS RETURNED WARMTH TO WESTERN NEW YORK BY THE 12TH. UNEVENTFUL WEATHER CONTINUED THROUGH MID-MONTH BEFORE A COLD FRONT STALLED ACROSS THE REGION DURING THE 20TH THROUGH 22ND. SEVERAL WAVES OF LOW PRESSURE PASSED ALONG THE FRONT AND ACROSS THE REGION, WITH EACH WAVE BRINGING SEVERAL INCHES OF RAINFALL TO WESTERN NEW YORK. THE GREATEST RAINFALL WAS ACROSS THE UPPER GENESEE VALLEY WHERE SOME FLOODING OCCURRED ON FRIDAY THE 21ST. BEHIND THIS FRONT, A LONGER DURATION COLD AIRMASS PASSED ACROSS THE REGION. THIS AIRMASS GAVE US OUR FIRST SNOWFLAKES OF THE YEAR LATE ON THE 26TH, AND ACCUMULATING SNOWFALL ON THE 27TH. ADDITIONAL PRECIPITATION ON THE 27TH AND 30TH PUSHED THIS OCTOBER TO THE WETTEST MONTH SINCE JUNE OF 2015. THERE WERE NO APPRECIABLE WIND EVENTS THIS MONTH, WITH THE HIGHEST GUST JUST 36 MPH ON THE 16TH. IN ALL, A MILD MONTH WITH WELCOMED RAINS. && THOMAS $$

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