017
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
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