Issued by NWS Buffalo, NY
000 CXUS51 KBUF 011723 CLMROC CLIMATE REPORT NATIONAL WEATHER SERVICE BUFFALO NY 1134 AM EST SUN NOV 1 2009 ................................... ...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2009... CLIMATE NORMAL PERIOD 1971 TO 2000 CLIMATE RECORD PERIOD 1830 TO 2009 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 67 10/03 81 10/13 LOWEST 27 10/19 30 10/30 10/19 AVG. MAXIMUM 55.9 59.7 -3.8 59.4 AVG. MINIMUM 40.5 41.1 -0.6 39.9 MEAN 48.2 50.4 -2.2 49.7 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 7 4.3 2.7 3 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 8.67 1873 MINIMUM 0.08 1924 TOTALS 2.97 2.60 0.37 3.38 DAYS >= .01 15 12 DAYS >= .10 7 6 DAYS >= .50 3 4 DAYS >= 1.00 0 1 GREATEST 24 HR. TOTAL 0.99 SNOWFALL (INCHES) RECORDS TOTAL 5.0 1906 TOTALS T 0.1 -0.1 0.1 SINCE 7/1 T 0.1 -0.1 0.1 SNOWDEPTH AVG. 0 0 0 0 DAYS >= 1.0 0 0.0 0.0 0 GREATEST SNOW DEPTH 0 -1 10/29 24 HR TOTAL T 10/14 TO 10/14 10/16 TO 10/16 DEGREE_DAYS HEATING TOTAL 514 447 67 471 SINCE 7/1 707 643 64 608 COOLING TOTAL 0 4 -4 2 SINCE 1/1 325 576 -251 601 ................................................................. WIND (MPH) AVERAGE WIND SPEED 7.8 HIGHEST WIND SPEED/DIRECTION 37/260 HIGHEST GUST SPEED/DIRECTION 49/270 DATE 10/07 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM NUMBER OF DAYS FAIR 3 NUMBER OF DAYS PC 7 NUMBER OF DAYS CLOUDY 21 AVERAGE RH (PERCENT) 77 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 2 RAIN 4 LIGHT RAIN 21 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 1 LIGHT SNOW 1 SLEET 0 FOG 21 FOG W/VIS <= 1/4 MILE 1 HAZE 7 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && ...GLOOMY AND WET WITH A WARM FINISH... OCTOBER STARTED COOL AND ABNORMALLY CLOUDY WITH LIGHT SYNOPTIC RAIN ACROSS THE ROCHESTER REGION FOR MANY OF THE FIRST 19 DAYS OF THE MONTH. PARTS OF THE METRO REGION SAW THEIR FIRST SNOWFLAKES OF THE SEASON MID MONTH BEFORE A PATTERN SHIFT WITH WARMER TEMPERATURES CLOSING OUT THE MONTH. THE AVERAGE TEMPERATURE OF 48.2F WAS JUST OVER 2 DEGREES BELOW NORMAL FOR THE MONTH. THE FIRST 19 DAYS OF THE MONTH WERE DOMINATED BY BELOW NORMAL TEMPERATURES, WITH 11 OF THE FINAL 12 DAYS AT OR ABOVE NORMAL. THE HIGH TEMPERATURE OF 67 DEGREES OCCURRED ON THE 3RD WHILE THE LOWEST TEMPERATURE FOR THE MONTH OCCURRED ON THE MORNING OF THE 19TH WHEN THE THERMOMETER DROPPED TO 27 DEGREES UNDER CLEAR SKIES. HISTORICALLY THIS OCTOBER IS THE 23RD COOLEST IN 139 YEARS OF RECORD KEEPING. OCTOBER WAS SLIGHTLY WETTER THAN NORMAL WITH 2.97 INCHES OF PRECIPITATION, WHICH WAS ABOUT A THIRD OF AN INCH MORE THAN NORMAL. THE GREATEST RAINFALL THIS MONTH OCCURRED ON THE 28TH WITH ABOUT AN INCH OF RAIN FALLING. HISTORICALLY THIS OCTOBER IS THE 50TH WETTEST MONTH IN 139 YEARS OF RECORD KEEPING. A COLD NORTHEASTERLY FLOW ACROSS LAKE ONTARIO BROUGHT A FEW FLAKES OF SNOW TO THE ROCHESTER AREA ON THE MORNING OF THE 14TH. TWO DAYS LATER, LOW PRESSURE TRACKED FROM SOUTHERN OHIO VALLEY TO THE MIDDLE ATLANTIC STATES AND BROUGHT ADDITIONAL SNOW TO THE REGION ON THE 16TH. A TRACE OF SNOW FELL AT THE ROCHESTER AIRPORT, WHILE LOCATIONS TO THE SOUTH SAW MEASURABLE SNOW OF AN INCH OR TWO. OCTOBER LACKED MANY DAYS OF FULL SUNSHINE. ONLY THREE DAYS IN THE MONTH HAD 80 PERCENT OR MORE SUNSHINE AND THE MONTH ENDED WITH ONLY 25 PERCENT OF THE POSSIBLE SUNSHINE, WHICH IS FAR BELOW THE NORMAL OF 50 PERCENT. A STORM SYSTEM TRACKED JUST TO THE NORTH OF CENTRAL NEW YORK ON THE 7TH AND BROUGHT GUSTY WINDS ALONG THE LAKE ONTARIO SHORE AND INLAND. AT THE AIRPORT A WIND GUST OF 49 MPH WAS RECORDED. GUSTY WINDS WERE ALSO FELT ON THE 24TH AND 31ST OF THE MONTH, OTHERWISE WINDS WERE GENERALLY LIGHT TO MODERATE WITH MONTHLY AVERAGE WINDS ABOUT ONE AND A HALF MPH LESS THAN NORMAL. LAKE ONTARIO`S TEMPERATURE FOR THE MONTH RANGED FROM 64 DEGREES TO 45 DEGREES. OVERALL OCTOBER WILL BE NOTED FOR ITS CLOUDINESS AND COOL TEMPERATURES. $$ THOMAS
