Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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164
CXUS51 KBUF 052236
CLMROC

CLIMATE REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
541 AM EST FRI DEC 1 2017

...................................

...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF NOVEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2017

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            66   11/28                         73  11/18
                        11/02
LOWEST             20   11/10                         27  11/12
AVG. MAXIMUM     48.8              48.0     0.8     54.0
AVG. MINIMUM     32.2              33.0    -0.8     36.5
MEAN             40.5              40.5     0.0     45.2
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      1               1.4    -0.4        0
DAYS MIN <= 32     17              14.8     2.2        9
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.72   1927
 MINIMUM         0.33   1904
TOTALS           4.13              2.94    1.19     2.60
DAYS >= .01        16                                 16
DAYS >= .10         8                                  7
DAYS >= .50         1                                  2
DAYS >= 1.00        1                                  0
GREATEST
 24 HR. TOTAL    1.65   11/05 TO 11/05           11/02 TO 11/03
                                                          11/03 TO 11/03
                                                          11/03 TO 11/03

SNOWFALL (INCHES)
RECORDS
 TOTAL           24.9   1996
TOTALS            2.6               7.3    -4.7     15.0
SINCE 7/1         2.6               7.4    -4.8     15.9
SNOWDEPTH AVG.      0                MM      MM        1
DAYS >= 1.0         1               2.3    -1.3        2
GREATEST
 SNOW DEPTH         1   11/10                         12  11/21
 24 HR TOTAL      1.2   11/10 TO 11/10           11/03 TO 11/03
                                                          11/03 TO 11/03
                                                          11/03 TO 11/03

DEGREE_DAYS
HEATING TOTAL     729               735      -6      585
 SINCE 7/1       1091              1368    -277      978
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        655               539     116      978
....................................................

WIND (MPH)
AVERAGE WIND SPEED              9.5
HIGHEST WIND SPEED/DIRECTION    32/210
HIGHEST GUST SPEED/DIRECTION    43/210    DATE  11/05

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.80
NUMBER OF DAYS FAIR            1
NUMBER OF DAYS PC             13
NUMBER OF DAYS CLOUDY         16

AVERAGE RH (PERCENT)     73

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                      11
LIGHT RAIN               17     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       1
HEAVY SNOW                0     SNOW                       4
LIGHT SNOW                9     SLEET                      0
FOG                      17     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.

&&

...UNSETTLED NOVEMBER...

A CONSTANT FLOW OF PACIFIC AIR BOTTLED COLDER AIR WELL TO THE NORTH
THIS MONTH, WITH THE ONE TRUE, BRIEF SURGE OF ARCTIC AIR MID-MONTH
PRODUCING THE FIRST CALENDAR DAY INCH OF SNOW AT THE ROCHESTER
AIRPORT. THERE WERE SEVERAL SOAKING RAINFALL EVENTS THROUGH THE
MONTH THAT BROUGHT NOVEMBER`S TOTAL PRECIPITATION TO OVER AN INCH
ABOVE NORMAL.

THE MONTHLY TEMPERATURE AVERAGED 40.5F WHICH IS EXACTLY NORMAL, AND
WAS THE SECOND MONTH THIS YEAR THAT FINISHED EXACTLY NORMAL. THERE
WAS ONE BRIEF ARCTIC BLAST THIS MONTH, THIS ON THE 10-11TH, THAT
DROPPED TEMPERATURES TO NEAR NORMAL. THE FIRST 32F READING OF THE
COOL SEASON OCCURRED ON NOVEMBER 7TH. THIS MADE FOR 212 DAYS OF
ABOVE FREEZING DAYS...WHICH IS THE 2ND LONGEST STREAK (216/1938).

PRECIPITATION TOTALED 4.13 INCHES FOR THE MONTH. MUCH OF THIS
PRECIPITATION OCCURRED OVER THE 2ND THROUGH THE 6TH, INCLUDING THE
GREATEST ACCUMULATION THIS MONTH OF 1.65" ON THE 5TH. THERE WERE 16
DAYS WITH MEASURABLE PRECIPITATION, 1 DAY GREATER THAN NORMAL. THERE
WERE ALSO 4 DAYS WITH MEASURABLE SNOW...THE SAME TOTAL OF DAYS AS
LAST NOVEMBER THOUGH NOVEMBER 2016 TOTALED 15.0 INCHES OF SNOW VS.
2.6" NOVEMBER 2017.

THE MONTH OF NOVEMBER CONTINUED THE WET PATTERN FROM THE END OF
OCTOBER, WITH 6 CONSECUTIVE DAYS OF RAIN CREATING A SOGGY GROUND
ACROSS WESTERN NEW YORK. HIGH PRESSURE THEN BROUGHT COOLER, BUT MUCH
DRIER WEATHER FROM THE 7TH THROUGH THE MORNING OF THE 9TH. A SHARP
COLD FRONT CROSSED WESTERN NEW YORK LATER ON THE 9TH, AND USHERED IN
THE COLDEST AIR OF THE WINTER SEASON THUS FAR FOR THE 10TH AND 11TH.
THIS COLD AIRMASS ALSO PRODUCED THE FIRST CALENDAR DAY INCH OF SNOW
AT THE ROCHESTER AIRPORT ON THE 10TH.

COOL AND UNSETTLED WEATHER REMAINED ACROSS WESTERN NEW YORK MID-
MONTH. THE FIRST LAKE EFFECT SNOW EVENT OCCURRED ON SUNDAY THE 19TH
THROUGH MONDAY THE 20TH. BEHIND A COLD FRONT, LAKE EFFECT SNOW BEGAN
THROUGH THE MORNING HOURS SUNDAY EAST OF LAKE ERIE, WHILE OFF LAKE
ONTARIO, THE LAKE EFFECT SNOW BECAME HEAVIEST MONDAY MORNING WELL TO
THE EAST OF ROCHESTER, WITH UP TO A FOOT OF SNOW FALLING OVER THE
SOUTHERN TUG HILL REGION. THIS EVENT PRODUCED 1.1 INCHES OF SNOW ON
THE 19-20TH IN ROCHESTER. THE LAST WEEK OF THE MONTH FINISHED WITH
6 OF 7 DAYS ABOVE TEMPERATURE NORMAL, INCLUDING 66F ON THE 28TH WITH
GUSTY SOUTHERLY WINDS, THAT BROUGHT NOVEMBER`S AVERAGE TEMPERATURE UP
TO EXACTLY NORMAL.

WINDS AVERAGED NEAR NORMAL THIS MONTH EVEN THOUGH THERE WERE NO HIGH
WIND EVENTS FOR THE MONTH. THE HIGHEST GUST WAS 43 MPH ON THE 5TH.

IN ALL A COOL, UNSETTLED MONTH FEATURING LITTLE SNOW.

&&

THOMAS

$$



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