Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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000
CXUS51 KBUF 040058
CLMROC

CLIMATE REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
714 AM EDT SAT APR 1 2017

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

...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF MARCH 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              86   03/29/1905
 LOW               -9   03/06/2014
HIGHEST            66   03/01                         75  03/09
LOWEST              3   03/05                         16  03/05
AVG. MAXIMUM     40.6              42.8    -2.2     49.9
AVG. MINIMUM     25.2              25.8    -0.6     30.4
MEAN             32.9              34.3    -1.4     40.1
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      8               5.5     2.5        4
DAYS MIN <= 32     19              23.2    -4.2       20
DAYS MIN <= 0       0               0.1    -0.1        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.02   1873
 MINIMUM         0.47   1958
TOTALS           4.66              2.50    2.16     1.82
DAYS >= .01        16                                 16
DAYS >= .10         7                                  6
DAYS >= .50         4                                  0
DAYS >= 1.00        1                                  0
GREATEST
 24 HR. TOTAL    1.22   03/31 TO 03/31

SNOWFALL (INCHES)
RECORDS
 TOTAL           54.0   1900
TOTALS           33.0              16.3    16.7      3.2
SINCE 7/1       104.6              95.2     9.4     54.9
SNOWDEPTH AVG.      3                 3       0        0
DAYS >= 1.0         5               4.0     1.0        1
GREATEST
 SNOW DEPTH        22   03/15                          1  03/03
 24 HR TOTAL     17.3   03/14 TO 03/15

DEGREE_DAYS
HEATING TOTAL     988               952      36      762
 SINCE 7/1       4856              5738    -882     4679
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
.......................................................

WIND (MPH)
AVERAGE WIND SPEED              11.2
HIGHEST WIND SPEED/DIRECTION    60/260
HIGHEST GUST SPEED/DIRECTION    81/250    DATE  03/08

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.80
NUMBER OF DAYS FAIR            3
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY         21

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       5
LIGHT RAIN               12     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                2     SNOW                       3
LIGHT SNOW               15     SLEET                      1
FOG                      13     FOG W/VIS <= 1/4 MILE      1
HAZE                      6

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

&&

...CHILLY MARCH FOLLOWING MILD WINTER...

AFTER A MILD WINTER ACROSS THE GREAT LAKES, ARCTIC AIR POURED OVER
THE REGION, PRODUCING A MARCH THAT FINISHED LESS THAN A DEGREE
WARMER THAN THE AVERAGE OF THE 2016-17 METEOROLOGICAL WINTER MONTHS
OF DECEMBER, JANUARY AND FEBRUARY. MARCH, COLDER THAN FEBRUARY FOR
JUST THE 9TH TIME IN RECORDED HISTORY, WAS ALSO THE FIRST BELOW
NORMAL TEMPERATURE MONTH SINCE APRIL 2016. THERE WERE THREE NOTABLE
WEATHER EVENTS THIS MONTH. THE FIRST WAS A HIGH WIND EVENT THAT
BROUGHT A CONSIDERABLE AMOUNT OF DAMAGE ACROSS WESTERN NEW YORK. THE
NEXT TWO WERE PRECIPITATION EVENTS, A NOR`EASTER THAT DROPPED OVER
TWO-FEET OF SNOW MID-MONTH, AND FINALLY A LONG DURATION RAIN EVENT
WITH OVER AN INCH OF RAIN TO CLOSE OUT MARCH.

THE AVERAGE TEMPERATURE IN MARCH WAS 32.9F DEGREES, WHICH IS 1.4F
DEGREES BELOW NORMAL. THERE WERE 17 DAYS BELOW NORMAL IN MARCH, WITH
THE BULK OF THESE DAYS CENTERED MID-MONTH. THREE DAYS THIS MONTH
REACHED INTO THE 60S, WHICH IS NORMAL. THE 66F READING ON THE 1ST
WAS THE WARMEST DAY THIS MONTH, AND ALSO SET A DAILY RECORD,
BREAKING THE FORMER RECORD OF 62F/1954. THERE WERE TWO BRIEF WARM
SPELLS THIS MONTH, THE FIRST FROM THE 6TH TO THE 8TH AND THE SECOND
FROM THE 24TH TO 28TH.

PRECIPITATION FOR THE MONTH TOTALED 4.66 INCHES, WHICH WAS THE 12TH
WETTEST MARCH ON RECORD. SNOWFALL TOTALED 33.0 INCHES WHICH IS TIED
FOR THE 10TH SNOWIEST MARCH ON RECORD. THERE WERE 16 DAYS THAT HAD
MEASURABLE PRECIPITATION THIS MONTH...ABOUT AVERAGE. HOWEVER OF
THESE 16 DAYS, 6 HAD AT LEAST A QUARTER OF AN INCH OF PRECIPITATION
WHICH IS JUST TWO DAYS LESS THAN THE RECORD OF 8 FOR MARCH. A NEW
DAILY SNOWFALL RECORD WAS ESTABLISHED ON THE 14TH WHEN 16.2 INCHES
OF SNOW WAS MEASURED. THERE WAS ALSO TWO NEW PRECIPITATION RECORDS
SET, THE FIRST ON THE 14TH AT 0.96 AND A SECOND ON THE 31ST AT 1.22
INCHES OF PRECIPITATION.

MARCH CAME IN LIKE A LION, AS A STORM SYSTEM CUT BY WESTERN NEW YORK
TO THE NORTHWEST. THIS SYSTEM BROUGHT WIND GUSTS OVER 60 MPH TO THE
GENESEE VALLEY. WARM AIR AHEAD OF THE SURFACE LOW ALSO BROUGHT
TEMPERATURES INTO THE MID 60S ACROSS THE ROCHESTER METRO AREA TO
START THE MONTH. HOWEVER THIS WARMTH FLEETED QUICKLY, WITH
TEMPERATURES ON THE 4TH REMAINING IN THE TEENS FOR HIGHS, AND
DIPPING TO 3F DEGREES ON THE MORNING OF THE 5TH, THE COLDEST MORNING
OF THE MONTH. AFTER A RETURN TO MILD TEMPERATURES THE 6TH THROUGH
8TH, A SEVERE WIND EVENT OCCURRED ACROSS WESTERN NEW YORK ON
WEDNESDAY THE 8TH. THIS WIND EVENT WAS NOT A CLASSIC EVENT AS THE
SURFACE LOW REMAINED FAR AWAY FROM THE EASTERN GREAT LAKES REGION.
RATHER A VERY STRONG LOW LEVEL JET FLOWED ACROSS THE REGION, WITH
SUNSHINE INCREASING THE MIXING LAYER, SUCH THAT THESE STRONG WINDS
ALOFT WERE TRANSPORTED TO THE SURFACE. SEVERE DAMAGE OCCURRED ACROSS
WESTERN NEW YORK, INCLUDING THE GENESEE VALLEY WITH NUMEROUS TREES
DOWN, AND OBJECTS TOSSED ABOUT. A PEAK WIND GUST OF 81 MPH AT THE
ROCHESTER AIRPORT WAS THE SECOND GREATEST WIND GUST EVER RECORDED.

THE FOLLOWING TUESDAY AND WEDNESDAY, THE 14TH AND 15TH, A NOR`EASTER
DEVELOPED, DROPPING WIDESPREAD SNOW ACROSS THE REGION. THOUGH THE
INITIAL ROUND OF SNOW WAS MANAGEABLE, THE CONSTANT FLOW OF MOISTURE
ACROSS LAKE ONTARIO, AND FALLING TEMPERATURES BROUGHT CONTINUAL LAKE
ENHANCED SNOW, SUCH THAT BY THE TIME ALL WAS SAID AND DONE ON THE
15TH, 26.5 INCHES OF SNOW WAS MEASURED AT THE ROCHESTER AIRPORT. THE
SNOWDEPTH DECREASED RAPIDLY, THANKS TO A STRONG MARCH SUN ANGLE AND
DAYTIME TEMPERATURES RISING ABOVE FREEZING. THIS SNOW ABLATED JUST A
WEEK LATER, BEFORE SEVERAL RAIN EVENTS IMPACTED WESTERN NEW YORK.
THIS FIRST EVENT BROUGHT NEARLY AN INCH OF RAINFALL TO WESTERN NEW
YORK ON THE 24TH AND 25TH. A SECOND EVENT, WITH GREATER RAINFALL,
REACHED THE REGION AT THE END OF THE MONTH WITH ONE TO ONE AND A
HALF INCHES OF RAIN FALLING ACROSS WESTERN NEW YORK.

IN ALL, AN ACTIVE AND COOL MONTH.

&&

THOMAS

$$


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