Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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CXUS51 KBUF 022143
CLMROC

CLIMATE REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
1009 AM EST THU FEB 1 2018

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

...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2018

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            60   01/12                         56  01/12
                        01/11
LOWEST             -6   01/07                          7  01/08
                                                          01/07
                                                          01/06
AVG. MAXIMUM     33.1              31.7     1.4     37.3
AVG. MINIMUM     16.9              17.6    -0.7     25.5
MEAN             25.0              24.7     0.3     31.4
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     16              15.9     0.1       10
DAYS MIN <= 32     27              27.5    -0.5       21
DAYS MIN <= 0       5               2.6     2.4        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         8.05   1878
 MINIMUM         0.52   1921
TOTALS           3.11              2.41    0.70     2.75
DAYS >= .01        18                                 16
DAYS >= .10         7                                  6
DAYS >= .50         2                                  3
DAYS >= 1.00        0                                  0
GREATEST
 24 HR. TOTAL    0.98   01/12 TO 01/12           01/17 TO 01/18
                                                          01/24 TO 01/24
                                                          01/24 TO 01/24

SNOWFALL (INCHES)
RECORDS
 TOTAL           61.3   2004
TOTALS           32.9              28.2     4.7     11.8
SINCE 7/1        70.2              57.4    12.8     57.0
SNOWDEPTH AVG.      5                 4       1        0
DAYS >= 1.0         7               8.8    -1.8        4
GREATEST
 SNOW DEPTH        12   01/14                          5  01/25
 24 HR TOTAL      9.6   01/13 TO 01/13           01/24 TO 01/24
                                                          01/24 TO 01/24
                                                          01/24 TO 01/24

DEGREE_DAYS
HEATING TOTAL    1233              1251     -18     1036
 SINCE 7/1       3526              3704    -178     3049
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
.....................................................

WIND (MPH)
AVERAGE WIND SPEED              11.5
HIGHEST WIND SPEED/DIRECTION    38/260
HIGHEST GUST SPEED/DIRECTION    46/270    DATE  01/23

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.80
NUMBER OF DAYS FAIR            0
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY         22

AVERAGE RH (PERCENT)     71

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       4
LIGHT RAIN                7     FREEZING RAIN              1
LT FREEZING RAIN          1     HAIL                       0
HEAVY SNOW                0     SNOW                       7
LIGHT SNOW               22     SLEET                      1
FOG                      20     FOG W/VIS <= 1/4 MILE      1
HAZE                      2

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

&&

...A TEMPERATURE ROLLER COASTER FOR JANUARY...

JANUARY STARTED OUT THE SAME WAY THAT DECEMBER ENDED, COLD, WITH THE
FIRST SEVEN DAYS OF THE MONTH RUNNING BELOW NORMAL. TEMPERATURES
BEGAN TO WARM TO MUCH ABOVE NORMAL AFTER THE FIRST WEEK OF JANUARY
WHICH HELPED TO CONTRIBUTE TO ICE JAM FLOODING THAT OCCURRED IN
AREAS EAST AND WEST OF THE ROCHESTER AREA. FOLLOWING THE WARM SPELL,
AN ARCTIC AIRMASS AND WIDESPREAD SNOWFALL AFFECTED THE AREA FOR THE
MIDDLE OF THE MONTH. THIS SECOND COLD STRETCH THAT SPANNED THE
MIDDLE OF THE MONTH WAS THEN FOLLOWED BY ANOTHER LONGER STRETCH OF
MOSTLY ABOVE NORMAL TEMPERATURES TO END THE MONTH.

FOR THE FIRST WEEK OF THE MONTH THE AVERAGE TEMPERATURE RANGED
BETWEEN 8 TO 23 DEGREES BELOW NORMAL. THE END OF THIS COLD STRETCH
MARKED 15 CONSECUTIVE DAYS OF AT OR BELOW NORMAL TEMPERATURES THAT
BEGAN ON CHRISTMAS EVE. ALL BUT TWO OF THESE DAYS SAW AVERAGE
TEMPERATURES THAT WERE 8 DEGREES OR MORE BELOW NORMAL. DURING THIS
STRETCH OF WELL BELOW NORMAL TEMPERATURES, MOST OF THE CREEKS AND
RIVERS FROZE OVER WITH THICK ICE. AS THE REGION WARMED UP WITH
TEMPERATURES WELL ABOVE NORMAL COMBINED WITH HEAVY RAIN, THE THREAT
FOR FLOODING BEGAN TO UNFOLD ON JANUARY 11TH. A STRONG COLD FRONT
MOVED THROUGH THE AREA DURING THE MORNING AND AFTERNOON ON JANUARY
12TH, HELPING TO USHER IN ANOTHER COLD AIR MASS THAT BROUGHT
TEMPERATURES BACK BELOW NORMAL ONCE AGAIN. COLDER THAN NORMAL
TEMPERATURES AFFECTED THE REGION FROM THE AFTERNOON ON JANUARY 12TH
THROUGH JANUARY 18TH. ON JANUARY 19TH THE ROCHESTER AREA BEGAN A
WARMING TREND THAT WOULD LAST THROUGH THE REST OF THE MONTH, WITH
ALL BUT A FEW DAYS DURING THIS 13 DAY STRETCH AVERAGING ABOVE NORMAL
FOR TEMPERATURES. FOR THE MONTH OF JANUARY, THE AVERAGE TEMPERATURE
WAS 25.0 DEGREES FAHRENHEIT, WHICH IS 0.3 DEGREES ABOVE THE NORMAL
OF 24.7 DEGREES. THE COLDEST DAY OF THE MONTH WAS ON JANUARY 6TH,
WHEN THE AVERAGE TEMPERATURE WAS ONLY 2 DEGREES AND THE MAXIMUM
TEMPERATURE ONLY REACHED 4 DEGREES FOR THE DAY. THE COLDEST MINIMUM
TEMPERATURE FOR THE MONTH OCCURRED ON JANUARY 7TH, WHEN THE LOW
TEMPERATURE DROPPED TO -6 DEGREES. THE WARMEST TEMPERATURE OF THE
MONTH OCCURRED ON JANUARY 11TH AND 12TH, WHEN THE MAXIMUM
TEMPERATURE FOR EACH DAY REACHED 60 DEGREES, WHICH SET A NEW RECORD
FOR THE DAY ON JANUARY 12TH FOR THE ROCHESTER AIRPORT.

JANUARY STARTED OFF FAIRLY QUIET FOR THE ROCHESTER AREA. A THREE DAY
STRETCH OF LAKE EFFECT SNOW DID AFFECT THE AREA FROM JANUARY 4TH
THROUGH THE 6TH WITH 2.4 TO 3.4 INCHES OF SNOW FALLING EACH OF THE
THE THREE DAYS. ON JANUARY 11TH AND 12TH, FLOODING DUE TO BOTH ICE
JAMS AND HEAVY RAINFALL WERE REPORTED IN SEVERAL COUNTIES WEST AND
EAST OF THE ROCHESTER AREA, WITH SOME FLOODING ALSO OCCURRING IN THE
ROCHESTER AREA. JANUARY 12TH, STARTED OUT WARM AND RAINY UNTIL A
STRONG COLD FRONT MOVED THROUGH THE AREA TRANSITIONING THE AREA FROM
WARM AND RAINY CONDITIONS TO COLD AND SNOWY CONDITIONS. HEAVY SNOW
FELL ACROSS THE REGION AS AN EXPANSIVE AREA OF LOW PRESSURE MOVED
ALONG THE APPALACHIAN MOUNTAINS AND THROUGH THE NORTHEAST. THE
COMBINATION OF RAIN AND SNOW WATER EQUIVALENT TOTALED TO 0.98 INCHES
OF LIQUID PRECIPITATION ON JANUARY 12TH. DURING THIS TIME THE
ROCHESTER AIRPORT RECEIVED 12.8 INCHES OF NEW SNOW FROM JANUARY 12TH
THROUGH THE 13TH. FROM JANUARY 14TH THROUGH 29TH, NO MORE THAN ONE
INCH OF SNOW FELL ON ANY CALENDER DAY DURING THIS TIME. WARM
TEMPERATURES AND RAINFALL THAT AMOUNTED TO JUST OVER THREE TENTHS OF
AN INCH TOTAL ON JANUARY 22ND AND 23RD HELPED TO MELT WHAT LITTLE
SNOW WAS LEFT ON THE GROUND IN THE ROCHESTER AREA. ON JANUARY 29TH
AND 30TH, AN INVERTED TROUGH ASSOCIATED WITH A COASTAL LOW BROUGHT
SNOW TO MOST OF WESTERN NEW YORK FROM ROCHESTER ON WEST WITH THE
ROCHESTER AIRPORT PICKING UP 6.7 INCHES OF SNOW, WITH 6.4 INCHES
FALLING ON JANUARY 29TH. AT THE ROCHESTER AIRPORT, THE MONTH OF
JANUARY 2018 ENDED UP WITH 32.9 INCHES OF SNOW, WHICH IS 4.7 INCHES
ABOVE THE NORMAL OF 28.2 INCHES. WITH THE ADDITION OF THE SNOWFALL
FROM JANUARY, THE SEASONAL SNOWFALL TOTAL IS NOW 70.2 INCHES, WHICH
IS 12.8 INCHES ABOVE THE NORMAL 57.4 INCHES THE ROCHESTER AIRPORT
WOULD HAVE THROUGH THE MONTH OF JANUARY. FOR THE MONTH OF JANUARY
THE TOTAL LIQUID EQUIVALENT PRECIPITATION AT THE ROCHESTER AIRPORT
WAS 3.11 INCHES, WHICH IS 0.70 INCHES ABOVE THE NORMAL OF 2.41
INCHES.

FOR THE ROCHESTER AIRPORT IN JANUARY 2018, FOUR DIFFERENT RECORDS
WERE BROKEN. JANUARY 5TH SET A RECORD FOR COLDEST MAXIMUM
TEMPERATURE WHEN THE TEMPERATURE ONLY REACHED 5 DEGREES, BREAKING
THE OLD RECORD SET BACK IN 1896 OF 9 DEGREES FOR THE DAY. ON JANUARY
11TH, A RECORD WARM MINIMUM TEMPERATURE WAS SET AS THE LOW
TEMPERATURE ONLY DROPPED TO 44 DEGREES, THUS BREAKING THE PREVIOUS
RECORD OF 38 DEGREES SET IN 2017. THE ONE AND ONLY RECORD HIGH
TEMPERATURE FOR THE MONTH WAS SET ON JANUARY 12TH, WHEN THE
TEMPERATURE REACHED 60 DEGREES, BREAKING THE OLD RECORD OF 58
DEGREES SET IN 2013. ONE RECORD PRECIPITATION EVENT OCCURRED FOR THE
MONTH WHEN THE COMBINATION OF RAIN AND LIQUID WATER EQUIVALENT FROM
SNOW TOTALED 0.98 INCHES ON JANUARY 12TH, WHICH BROKE THE OLD RECORD
OF 0.83 INCHES OF PRECIPITATION ON THE SAME DATE IN 1909.

THE LAKE ONTARIO TEMPERATURE FLUCTUATED BETWEEN A MAXIMUM
TEMPERATURE OF 37 DEGREES FAHRENHEIT AND A MINIMUM OF 34 DEGREES.

IN ALL, A MOSTLY AVERAGE MONTH OF JANUARY FOR WESTERN NEW YORK.

&&

WELCH

$$


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