Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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974
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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