Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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000
CXUS51 KBUF 051209
CLMBUF

CLIMATE REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
113 PM EDT TUE AUG 1 2017

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

...THE BUFFALO NY CLIMATE SUMMARY FOR THE MONTH OF JULY 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              97   07/15/1995
                        07/06/1988
 LOW               43   07/11/1945
HIGHEST            87   07/05                         91  07/23
LOWEST             54   07/26                         55  07/20
                                                          07/02
AVG. MAXIMUM     79.0              79.9    -0.9     82.8
AVG. MINIMUM     62.3              62.3     0.0     65.4
MEAN             70.7              71.2    -0.5     74.1
DAYS MAX >= 90      0               1.1    -1.1        2
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.0     0.0        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         8.93   1992
 MINIMUM         0.15   1933
TOTALS           4.65              3.23    1.42     1.80
DAYS >= .01        16                                  5
DAYS >= .10         6                                  2
DAYS >= .50         2                                  2
DAYS >= 1.00        2                                  1
GREATEST
 24 HR. TOTAL    2.29   07/13 TO 07/13

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   MM
TOTALS            0.0               0.0     0.0      0.0
SINCE 7/1         0.0               0.0     0.0
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0               0.0     0.0        0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL      0.0

DEGREE_DAYS
HEATING TOTAL       1                 9      -8        0
 SINCE 7/1          1                 9      -8        0
COOLING TOTAL     183               197     -14      293
 SINCE 1/1        333               326       7      480
..................................................

WIND (MPH)
AVERAGE WIND SPEED              8.3
HIGHEST WIND SPEED/DIRECTION    26/240    DATE  07/02
HIGHEST GUST SPEED/DIRECTION    35/250    DATE  07/09, 07/02

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
NUMBER OF DAYS FAIR            5
NUMBER OF DAYS PC             18
NUMBER OF DAYS CLOUDY          8

AVERAGE RH (PERCENT)     73

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              7     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                       4
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      17     FOG W/VIS <= 1/4 MILE      1
HAZE                      4

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

&&

...FAIRLY TYPICAL JULY WITH TWO NOTABLE WEATHER EVENTS...

JULY FEATURED TYPICAL MID-SUMMER CONDITIONS WITH 24 DAYS THIS MONTH
WITHIN 3 DEGREES OF NORMAL TEMPERATURE. THERE WERE NO MAJOR EXTREMES
IN THE TEMPERATURES THOUGH SEVERAL DAYS THROUGH THE MONTH EXHIBITED
SUMMER`S HIGH HUMIDITY. THERE WERE TWO WEATHER EVENTS MID MONTH THAT
BROUGHT SIGNIFICANT WEATHER (FLASH FLOODING, TORNADOES) TO BUFFALO.

THE AVERAGE TEMPERATURES THIS MONTH WAS 70.7F WHICH IS A HALF A
DEGREE BELOW NORMAL. THE WARMEST DAY THIS MONTH WAS 87F ON JULY 5TH.
THERE WERE NO 90 DEGREE READINGS THIS MONTH FOR THE SECOND TIME THIS
DECADE, WITH 2014 THE OTHER YEAR WITHOUT A 90 DEGREE READING IN
JULY.

PRECIPITATION FOR THE MONTH TOTALED 4.65 INCHES, WHICH IS ABOUT AN
INCH AND A HALF ABOVE NORMAL. HALF OF THIS RAIN FELL IN ONE DAY...ON
THE 13TH WHEN A NEW DAILY RECORD OF 2.29 INCHES OF PRECIPITATION WAS
SET. THE FORMER PRECIPITATION RECORD WAS 1.86 INCHES SET BACK IN
1956. THERE WERE 7 THUNDERSTORMS THIS MONTH, ONE MORE THAN NORMAL.

THERE WERE TWO SIGNIFICANT EVENTS THIS MONTH. THE FIRST ON THE 12TH-
13TH WHEN A WARM FRONT STALLED ACROSS WESTERN NEW YORK. ON WEDNESDAY
THE 12TH, SEVERAL INCHES OF RAIN FELL ACROSS WESTERN NEW YORK,
INCLUDING ACROSS THE SOUTHERN TIER, AND TO THE EAST OF BUFFALO.
THROUGH THE MORNING HOURS OF THE 13TH ANOTHER WAVE A HEAVY RAIN FELL
ALONG THIS SAME WARM FRONT BOUNDARY, INCLUDING ACROSS DOWNTOWN
BUFFALO AND THE METRO AREA WHERE SEVERAL INCHES OF RAIN FELL IN JUST
A FEW HOURS. NUMEROUS ROADS WERE FLOODED ACROSS THE BUFFALO METRO
AREA, AS WELL AS ACROSS GENESEE AND WYOMING COUNTIES. AREA CREEKS
ALSO ROSE RAPIDLY, ESPECIALLY CAYUGA CREEK WHICH PEAKED AT MODERATE
AND ITS FIFTH HIGHEST GAUGE READING IN RECORD KEEPING.

THE SECOND EVENT WAS JUST A WEEK LATER, ON THE 20TH, AND WAS A
NORTHWEST FLOW EVENT IN WHICH A COMPLEX OF THUNDERSTORMS DROPPED
ACROSS THE REGION FROM THE NIAGARA PENINSULA. THESE STORMS,
INITIALLY BRINGING DAMAGING WINDS INTERACTED WITH A FRONTAL BOUNDARY
DRAPED ACROSS THE REGION TO SPAWN FOUR TORNADOES.

THE FIRST TWO TORNADOES WERE IN SOUTHERN ERIE COUNTY AND WERE THE
FIRST TORNADOES IN ERIE COUNTY SINCE 2006. THE FIRST TORNADO CROSSED
HAMBURG, INCLUDING THE ERIE COUNTY FAIRGROUNDS, WHILE THE SECOND
TORNADO THIS DAY CROSSED HOLLAND. IN ADDITION TO DOWNING MANY TREES,
THE TORNADO THROUGH HAMBURG CAUSED DAMAGE TO THE FAIRGROUNDS WHILE
ALSO BLOWING OUT THE WINDOWS OF HUNDREDS OF CARS.

A THIRD AND FOURTH TORNADO DEVELOPED LATER ACROSS ALLEGANY COUNTY IN
THE TOWNS OF RUSHFORD AND ANGELICA. THESE TORNADOES UPROOTED TREES,
WITH THE FOURTH TORNADO ACROSS ANGELICA ALSO DESTROYING A BARN AND
SEVERAL SHEDS.

WINDS WERE LIGHT FOR THE MONTH, AVERAGING 8.3 MPH WHICH IS 0.7 MPH
BELOW NORMAL. LAKE ERIE LINGERED NEAR NORMAL THROUGH THE MONTH IN
THE LOW TO MID 70S.

IN ALL IT WAS PLEASANT THROUGH MUCH OF THE MONTH.

&&

THOMAS

$$



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