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249
CXUS51 KBUF 050610
CLMROC

CLIMATE REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
1223 PM EST MON DEC 1 2014

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

...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF NOVEMBER 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2014

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            70   11/24                         67  11/06
LOWEST             15   11/19                          7  11/30
AVG. MAXIMUM     45.3              48.0    -2.7     45.0
AVG. MINIMUM     32.1              33.0    -0.9     30.0
MEAN             38.7              40.5    -1.8     37.5
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      5               1.4     3.6        3
DAYS MIN <= 32     15              14.8     0.2       15
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.72   1927
 MINIMUM         0.33   1904
TOTALS           2.41              2.94   -0.53     2.81
DAYS >= .01        16                                 20
DAYS >= .10         5                                  9
DAYS >= .50         1                                  0
DAYS >= 1.00        0                                  0
GREATEST
 24 HR. TOTAL    0.79   11/06 TO 11/07           11/26 TO 11/27



SNOWFALL (INCHES)
RECORDS
 TOTAL           24.9   1996
TOTALS            9.1               7.3     1.8     13.3
SINCE 7/1         9.1               7.4     1.7     13.3
SNOWDEPTH AVG.      0                MM      MM        1
DAYS >= 1.0         2               2.3    -0.3        5
GREATEST
 SNOW DEPTH         3   11/21                          7  11/28
                        11/20                             11/27
 24 HR TOTAL      2.9   11/17                    11/27 TO 11/27



DEGREE_DAYS
HEATING TOTAL     783               735      48      817
 SINCE 7/1       1280              1368     -88     1372
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        542               539       3      660
........................................................

WIND (MPH)
AVERAGE WIND SPEED              10.9
HIGHEST WIND SPEED/DIRECTION    35/260    DATE  11/24
HIGHEST GUST SPEED/DIRECTION    43/250    DATE  11/25
                                          DATE  11/24

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.80
NUMBER OF DAYS FAIR            0
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY         22

AVERAGE RH (PERCENT)     67

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       7
LIGHT RAIN               15     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       6
LIGHT SNOW               13     SLEET                      0
FOG                      17     FOG W/VIS <= 1/4 MILE      0
HAZE                      5

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

&&

...SNOWY START TO WINTER...

AFTER A FINE FALL...THE MONTH OF NOVEMBER QUICKLY TURNED TO WINTER`S
CHILL...WIND AND SNOW. SEVERAL COLD AIRMASSES SURGED SOUTHWARD
ACROSS THE GREAT LAKES THIS MONTH WITH THE COLDEST AIRMASS
TRIGGERING A HISTORIC LAKE EFFECT SNOW EVENT TO THE SOUTHWEST OF
ROCHESTER OFF LAKE ERIE.

THE AVERAGE TEMPERATURE FOR THE MONTH OF NOVEMBER WAS 38.7F
DEGREES...WHICH IS ABOUT 2 DEGREES BELOW NORMAL. THE WARMEST DAY
THIS MONTH WAS 70F ON THE 24TH. THERE WAS ONE RECORD SET...THE 26F
DEGREE READING ON THE 18TH TIED WITH 1951 FOR THE COLDEST MAXIMUM
TEMPERATURE. THERE WERE A COUPLE OTHER BRIEF WARM STRETCHES THIS
MONTH WITH EACH REACHING INTO THE 60S. HOWEVER THESE WARM SPELLS
ONLY LASTED ABOUT THREE DAYS EACH AND ENDED WITH THE NEXT SURGE OF
ARCTIC AIR.

TOTAL PRECIPITATION FOR NOVEMBER WAS 2.41 INCHES...WHICH IS ABOUT A
HALF INCH BELOW NORMAL. THE NUMBER OF DAYS (16) WITH MEASURABLE
RAINFALL DID FINISH ABOVE NORMAL BY A DAY...AND THERE WERE ONLY 5
DAYS THAT DID NOT MEASURE AT LEAST A TRACE OF RAIN OR SNOW. THERE
WERE NO SIGNIFICANT RAIN EVENTS THIS MONTH...WITH THE GREATEST
RAINFALL COMING ON THE 1ST WHEN 0.53 INCHES OF RAIN FELL.

TOTAL SNOWFALL WAS 9.1 INCHES FOR THE MONTH AT THE AIRPORT...WHICH
IS ABOUT 2 INCHES ABOVE NORMAL. THERE WERE 10 DAYS WITH MEASURABLE
SNOWFALL...WHICH IS 4 MORE THAN NORMAL.

THE HEMISPHERIC PATTERN THIS MONTH FEATURED A STRONG RIDGE OF HIGH
PRESSURE OVER ALASKA AND THE WESTERN US...WITH A TROUGH OF LOW
PRESSURE OVER THE EASTERN HALF OF THE UNITED STATES. THIS AMPLIFIED
PATTERN TRANSLATED TO LATE FALLS WARMTH BEING REPLACED BY INCREASING
OUTBREAKS OF ARCTIC AIR FROM THE NORTH. THROUGH THE FIRST TWO WEEKS
OF NOVEMBER THERE WERE TWO BRIEF WARM-UPS...THE 3RD-6TH AND THE
10TH-12TH. AFTER THE FIRST WARM-UP A COLD FRONT BROUGHT A FEW FLAKES
OF SNOW ON THE 7TH...AND THEN ON THE 8TH THE FIRST OFFICIAL 32F
READING OF THE WINTER SEASON WAS RECORDED. THIS IS THE 5TH LATEST
FIRST OCCURRENCE OF A 32F READING AT THE ROCHESTER AIRPORT IN 144
YEARS OF RECORD. AFTER THE SECOND WARM-UP A COLD FRONT BROUGHT OUR
FIRST MEASURABLE SNOWFALL ON THE 13TH OF THE MONTH.

TEMPERATURES REMAINED BELOW NORMAL THROUGH THE THIRD WEEKEND OF THE
MONTH...AND THEN THE STAGE WAS SET FOR AN EPIC LAKE EFFECT SNOW
EVENT DOWNWIND OF LAKE ERIE. A DEEP UPPER LEVEL LOW WAS SITUATED
OVER THE WESTERN GREAT LAKES WITH COLD SOUTHWEST WINDS RUSHING OVER
THE WARM LAKE WATERS OF LAKE ERIE. THE SNOWBANDS IMPACTED
COMMUNITIES AROUND THE BUFFALO AREA...AND POINTS EAST INTO GENESEE
AND WYOMING COUNTIES THE GREATEST. HOWEVER WINDS DID BRING THE HEAVY
SNOW AS FAR INLAND AS THE SOUTHWESTERN CORNER OF MONROE
COUNTY...WHERE CLOSE TO A FOOT OF SNOW FELL THROUGH THE EVENT...WITH
THE AIRPORT ONLY RECEIVING JUST A FEW INCHES OF SNOW.

AFTER THIS EPIC LAKE EFFECT SNOW EVENT...GUSTY SOUTHERLY WINDS
BROUGHT TEMPERATURES UP TO 70F BY MONDAY THE 24TH WHICH QUICKLY
MELTED THE SNOW COVER AROUND THE GENESEE VALLEY. THIS SNOWMELT HAD
LITTLE IMPACT ON AREA CREEKS. THE MONTH FINISHED QUIET...WITH JUST
NUISANCE SNOWS ON THE 25TH AND 26TH OF THE MONTH.

SOUTHWEST WINDS DOMINATED THE MONTH...AND THESE WINDS WERE A BIT
GUSTY AS THE MONTH AVERAGED 10.9 MPH. THE LAKE ONTARIO WATER
TEMPERATURE DROPPED FROM 56F AT THE START OF THE MONTH...DOWN TO 43F
BY THE END OF THE MONTH.

IN ALL...A COLD AND WINTRY NOVEMBER FOR ROCHESTER.

&&

THOMAS

$$









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