Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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000
CXUS51 KBUF 051912 RRA
CLMBUF

CLIMATE REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
541 PM EDT TUE MAY 1 2018

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

...THE BUFFALO NY CLIMATE SUMMARY FOR THE MONTH OF APRIL 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              94   04/28/1990
 LOW                5   04/01/1923
HIGHEST            74   04/23                         85  04/27
LOWEST             23   04/07                         31  04/08
AVG. MAXIMUM     46.9              55.0    -8.1     60.3
AVG. MINIMUM     31.4              36.8    -5.4     40.8
MEAN             39.2              45.9    -6.7     50.5
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      1               0.5     0.5        0
DAYS MIN <= 32     20               8.5    11.5        2
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         6.38   2017
 MINIMUM         0.59   1915
TOTALS           3.99              3.01    0.98     6.38
DAYS >= .01        18                                 13
DAYS >= .10        10                                  8
DAYS >= .50         3                                  3
DAYS >= 1.00        1                                  3
GREATEST
 24 HR. TOTAL    1.33   04/16

SNOWFALL (INCHES)
RECORDS
 TOTAL           15.7   1885
TOTALS            6.9               2.7     4.2      2.3
SINCE 7/1       112.3              94.4    17.9
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         2               0.8     1.2        1
GREATEST
 SNOW DEPTH         1   04/19                          1  04/08
                        04/18                             04/07
                        04/17
 24 HR TOTAL      2.0   04/06 TO 04/06

DEGREE_DAYS
HEATING TOTAL     768               576     192      432
 SINCE 7/1       6312              6281      31     5308
COOLING TOTAL       0                 3      -3        6
 SINCE 1/1          0                 3      -3        6
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              11.4
HIGHEST WIND SPEED/DIRECTION    47/230    DATE  04/04
HIGHEST GUST SPEED/DIRECTION    63/210    DATE  04/04

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
NUMBER OF DAYS FAIR            4
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY         16

AVERAGE RH (PERCENT)     72

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              3     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       7
LIGHT RAIN               15     FREEZING RAIN              1
LT FREEZING RAIN          2     HAIL                       1
HEAVY SNOW                3     SNOW                       8
LIGHT SNOW               13     SLEET                      2
FOG                      19     FOG W/VIS <= 1/4 MILE      2
HAZE                      7

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

&&

...AN UNSEASONABLY COOL APRIL...

APRIL OVERALL WAS A COOL MONTH, ESPECIALLY THE FIRST THREE WEEKS.
PRECIPITATION, BOTH LIQUID AND SNOWFALL FOR THE MONTH WAS ABOVE
NORMAL. ACTIVE WEATHER DURING THE MONTH PRIMARILY FROM WIND AND ICE
CAUSED PROBLEMS THROUGHOUT WESTERN AND NORTH CENTRAL NEW YORK.

APRIL SAW A STRETCH WHERE ONLY ONE OUT OF THE FIRST 22 DAYS TO START
THE MONTH HAD ABOVE NORMAL TEMPERATURES. DURING THIS STRETCH THE
AVERAGE TEMPERATURE WAS AS MUCH AS 16 DEGREES BELOW NORMAL. ON APRIL
7TH, THE HIGH TEMPERATURE ONLY REACHED 30 DEGREES, WHICH WAS 21
DEGREES BELOW THE NORMAL HIGH OF 51. A WARMUP FOR AT LEAST A FEW
DAYS OCCURRED STARTING ON THE 22ND WHEN THE HIGH TEMPERATURE REACHED
62 DEGREES, WHICH WAS 4 DEGREES WARMER THAN THE NORMAL HIGH FOR THAT
DATE. ANOTHER COUPLE DAYS OF WARMER THAN NORMAL TEMPERATURES
OCCURRED ON APRIL 23RD AND 24TH. APRIL 23RD WAS THE WARMEST DAY OF
THE MONTH WITH A HIGH TEMPERATURE OF 74 DEGREES. ANOTHER COOL DOWN
BROUGHT TEMPERATURES BACK BELOW NORMAL, BUT NOT TO THE EXTENT THAT
WAS EXPERIENCED EARLIER IN THE MONTH. THE MONTH IN GENERAL HAD ONLY
SEVEN DAYS WHERE THE TEMPERATURE WAS AT OR ABOVE NORMAL. OVERALL THE
MONTH FINISHED BELOW NORMAL WITH AN AVERAGE TEMPERATURE OF 39.2
DEGREES. THIS IS 6.7 DEGREES BELOW THE NORMAL OF 45.9 DEGREES. APRIL
2018 TIED AS THE 11TH COLDEST APRIL ON RECORD.

PRECIPITATION FOR THE MONTH WAS ABOVE NORMAL FOR BOTH SNOWFALL AND
LIQUID EQUIVALENT. THE MONTH TIED AN APRIL RECORD FOR THE MOST DAYS
IN THE MONTH WITH MEASURABLE SNOWFALL, WHERE 11 DAYS HAD AT LEAST
0.1 INCHES OR MORE OF SNOWFALL, WHICH WAS LAST SET BACK IN APRIL
1961. APRIL 6TH, SAW THE GREATEST SNOWFALL FOR ANY DAY IN THE MONTH
WHEN TWO INCHES ACCUMULATED FOR THE DAY AS A WEAK AREA OF LOW
PRESSURE AND ASSOCIATED FRONTS MOVED THROUGH THE AREA. A COMPLEX
STORM SYSTEM AFFECTED WESTERN AND NORTH CENTRAL NEW YORK ON APRIL
14TH AND 15TH, WHEN MOST AREAS RECEIVED PERIODS OF SLEET AND
FREEZING RAIN. DURING THIS EVENT, THE BUFFALO AIRPORT RECEIVED 0.20
INCHES OF ICE ACCUMULATION. MUCH MORE SIGNIFICANT ICE ACCUMULATIONS
OCCURRED IN THE NORTH COUNTRY WHERE AS MUCH AS ONE INCH OF ICE
ACCUMULATION OCCURRED WITH THIS EVENT. THIS STORM CONTINUED TO
AFFECT THE AREA THROUGH APRIL 16TH, WHEN 1.33 INCHES OF LIQUID
EQUIVALENT PRECIPITATION FELL ALONG WITH 1.8 INCHES OF SNOW FOR THE
DAY. PRECIPITATION ON APRIL 16TH SET A NEW DAILY PRECIPITATION
RECORD, BREAKING THE OLD RECORD OF 0.96 INCHES SET IN 1986. THE
SECOND HALF OF THE MONTH WAS FAIRLY QUIET WEATHER WISE WITH ONLY A
FEW DAYS RECEIVING PRECIPITATION GREATER THAN A TENTH OF AN INCH.
PRECIPITATION FOR THE MONTH WAS 3.99 INCHES, WHICH IS 0.98 INCHES
ABOVE THE NORMAL OF 3.01 INCHES. SNOWFALL FOR THE MONTH WAS 6.9
INCHES, WHICH IS 4.2 INCHES ABOVE THE NORMAL OF 2.7 INCHES.

A POWERFUL STORM SYSTEM MOVED THROUGH SOUTHERN ONTARIO CANADA LATE
ON THE NIGHT OF APRIL 3RD THROUGH THE DAY ON APRIL 4TH. WITH THIS
STORM PASSAGE, STRONG DAMAGING WINDS AFFECTED THE WESTERN AND NORTH
CENTRAL NEW YORK AREA. NUMEROUS TREES AND POWER LINES WERE KNOCKED
DOWN, STRUCTURAL DAMAGE TO SOME BUILDINGS OCCURRED AND A FEW TRACTOR
TRAILERS WERE BLOWN OVER. SOME WIND GUSTS OF NOTE WERE: 63 MPH AT
THE BUFFALO AIRPORT, 68 MPH AT FORT DRUM, 66 MPH AT THE ROCHESTER
AIRPORT AND 75 MPH IN BATAVIA. ALSO WITH THIS WIND EVENT, DUE TO THE
HIGH WINDS, THE ICE ON LAKE ERIE OVERTOPPED THE ICE BOOM THAT WAS IN
PLACE. AS A RESULT, ICE WAS PUSHED INTO AND DOWN THE NIAGARA RIVER,
WHICH POSED AN ICE JAM THREAT ON THE RIVER AND ALSO CLEARED MOST OF
THE ICE OUT OF LAKE ERIE.

THE LAKE ERIE WATER TEMPERATURE RANGED FROM 32 DEGREES FAHRENHEIT TO
AS WARM AS 38 DEGREES.

&&

WELCH

$$


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