Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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CXUS51 KBUF 041446
CLMROC

CLIMATE REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
1139 AM EST SUN FEB 1 2015

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

...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              74   01/25/1950
 LOW              -17   01/16/1994
HIGHEST            57   01/04                         53  01/13
                                                          01/11
LOWEST             -9   01/14                         -6  01/03
AVG. MAXIMUM     29.2              31.7    -2.5     28.7
AVG. MINIMUM      9.9              17.6    -7.7     12.5
MEAN             19.5              24.7    -5.2     20.6
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     20              15.9     4.1       18
DAYS MIN <= 32     30              27.5     2.5       29
DAYS MIN <= 0       4               2.6     1.4        6

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         8.05   1878
 MINIMUM         0.52   1921
TOTALS           1.74              2.41   -0.67     1.23
DAYS >= .01        17                                 17
DAYS >= .10         6                                  3
DAYS >= .50         1                                  0
DAYS >= 1.00        0                                  0
GREATEST
 24 HR. TOTAL    0.63   01/03 TO 01/04



SNOWFALL (INCHES)
RECORDS
 TOTAL           61.3   2004
TOTALS           17.7              28.2   -10.5     20.8
SINCE 7/1        43.4              57.4   -14.0     56.8
SNOWDEPTH AVG.      2                 4      -2        2
DAYS >= 1.0         9               8.8     0.2        6
GREATEST
 SNOW DEPTH         4   01/31                         10  01/03
                        01/13
 24 HR TOTAL      3.4   01/12



DEGREE_DAYS
HEATING TOTAL    1402              1251     151     1371
 SINCE 7/1       3622              3704     -82     3868
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
...................................................

WIND (MPH)
AVERAGE WIND SPEED              10.8
HIGHEST WIND SPEED/DIRECTION    40/250    DATE  01/04
HIGHEST GUST SPEED/DIRECTION    57/240    DATE  01/04

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            2
NUMBER OF DAYS PC             11
NUMBER OF DAYS CLOUDY         18

AVERAGE RH (PERCENT)     69

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               1
HEAVY RAIN                0     RAIN                       2
LIGHT RAIN                3     FREEZING RAIN              0
LT FREEZING RAIN          3     HAIL                       0
HEAVY SNOW                1     SNOW                       3
LIGHT SNOW               25     SLEET                      1
FOG                      20     FOG W/VIS <= 1/4 MILE      1
HAZE                     11

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

&&

...A COLD JANUARY...

JANUARY WAS A COLD WINTER MONTH ACROSS WESTERN NEW YORK AS COLD
WEATHER PATTERNS TOOK THE UPPER HAND OVER ANY ATTEMPTS OF A WINTER
RESPITE FROM THE FRIGID TEMPERATURES. NICKEL AND DIME SNOWS FELL
THROUGH THE MONTH...OF WHICH EARLY MONTH WAS OF THE LAKE EFFECT SNOW
VARIETY...AND LATER MONTH WAS SYNOPTICALLY DRIVEN SNOWS.

THE AVERAGE TEMPERATURE THIS MONTH WAS 19.5F DEGREES WHICH IS JUST
OVER 5 DEGREES BELOW NORMAL. THIS MADE JANUARY THE 23RD COLDEST IN
145 YEARS...AND COLDEST JANUARY SINCE 2009 WHEN THE AVERAGE
TEMPERATURE WAS THEN 19.1F. THERE WERE 17 DAYS THAT DROPPED INTO THE
SINGLE DIGITS THIS MONTH...TWO MORE THAN LAST JANUARY...AND MORE
THAN DOUBLE THE TYPICAL AMOUNT. RECORDS THAT WERE PREVIOUSLY
ESTABLISHED IN JANUARY STOOD THROUGH THE MONTH.

PRECIPITATION FOR THE MONTH WAS ABOUT A HALF INCH BELOW
NORMAL...WITH SNOWFALL ALSO MORE THAN 10 INCHES BELOW NORMAL. THERE
WAS ONE RAINSTORM THIS MONTH...ON THE 3RD-4TH...OTHERWISE MUCH OF
THE PRECIPITATION THAT FELL THIS MONTH WAS SNOW. THERE WERE NO
SNOWFALL RECORDS THIS MONTH...AND THE GREATEST CALENDAR DAY SNOWFALL
WAS BUT A MERE 3.4 INCHES ON THE 12TH. MEASURABLE SNOWFALL OCCURRED
ON 20 DAYS THIS MONTH WHICH WAS 4 DAYS MORE THAN NORMAL.

THE NEW YEAR BEGAN WITH LAKE EFFECT SNOW DOWNWIND OF THE EASTERN
GREAT LAKES ON A GUSTY SOUTHWEST WIND. THIS WIND PROVED TOO STRONG
FOR A HEALTHY BAND OF LAKE SNOW TO DEVELOP...THOUGH SEVERAL INCHES
DID COAT WESTERN NEW YORK NEW YEARS DAY. THE NEXT THREE DAYS OF
JANUARY WERE ATYPICAL FOR THE MONTH AS A WHOLE...AS A SOUTHERLY FLOW
AND ABOVE NORMAL TEMPERATURES WERE COUPLED WITH A SOAKING RAINFALL.
OVER AN INCH OF RAIN FELL ACROSS WESTERN NEW YORK ON THE 3RD AND
4TH...WITH THE GREATEST RAINFALL AMOUNTS FOUND JUST TO THE NORTHEAST
OF LAKE ERIE. A SURGE OF VERY COLD AIR REACHED THE EASTERN GREAT
LAKES ON THE 5TH...AND REMAINED ACROSS THE REGION FOR THE BETTER
PART OF A WEEK. THIS COLD AIRMASS PRODUCED THREE MODERATE LAKE
EFFECT SNOW EVENTS EAST OF LAKE ERIE WITH EACH EVENT DROPPING
BETWEEN ONE AND TWO FEET OF SNOW.

BY MID MONTH THE ARCTIC AIRMASS RETREATED AND A WESTERLY FLOW
RETURNED ACROSS THE EASTERN GREAT LAKES REGION. THIS WESTERLY FLOW
CONCENTRATED THE ARCTIC COLD WELL TO OUR NORTH...ALLOWING WESTERN
NEW YORK TO CYCLE THROUGH TEMPERATURES NEAR NORMAL. WITHIN THIS
WESTERLY FLOW THERE WERE SEVERAL SYNOPTIC CLIPPERS THAT CROSSED THE
REGION (12TH, 26-27TH AND 29TH-30TH) WITH TYPICAL LIGHT SNOWFALLS.
ON THE 24TH WIDESPREAD LIGHT FREEZING RAIN AND DRIZZLE GLAZED
WESTERN NEW YORK WITH HUNDREDS OF CARS SLIDING OFF THE ROADWAYS. AN
AREA OF HIGH PRESSURE BROUGHT CRYSTAL CLEAR BLUE SKIES ON WEDNESDAY
JANUARY 28TH. COLD AIR RETURNED FOR GOOD AT THE END OF THE MONTH
WITH THE LAST WEEK OF THE MONTH DIPPING INTO THE SINGLE DIGITS.

TYPICAL SHORELINE ICE WAS FOUND ON THE SOUTHERN SHORELINE OF LAKE
ONTARIO. THE PEAK WIND GUST THIS MONTH WAS 57 MPH ON THE 4TH.

IN ALL JANUARY WAS BITTERLY COLD FOR THE GENESEE VALLEY.

&&

THOMAS

$$





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