Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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CXUS51 KBUF 011924
CLMROC

CLIMATE REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
1226 PM EDT TUE SEP 1 2015

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

...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF AUGUST 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              99   08/28/1948
                        08/26/1948
 LOW               36   08/30/1965
HIGHEST            89   08/17                         87  08/30
                                                          08/26
LOWEST             50   08/28                         50  08/29
                                                          08/19
AVG. MAXIMUM     79.1              79.1     0.0     77.8
AVG. MINIMUM     59.9              59.5     0.4     58.6
MEAN             69.5              69.3     0.2     68.2
DAYS MAX >= 90      0               1.4    -1.4        0
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         7.26   1886
 MINIMUM         0.36   1876
TOTALS           4.67              3.47    1.20     2.27
DAYS >= .01         9                                 10
DAYS >= .10         4                                  7
DAYS >= .50         2                                  1
DAYS >= 1.00        2                                  0
GREATEST
 24 HR. TOTAL    2.38   08/10 TO 08/10

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   MM
TOTALS            0.0               0.0     0.0      0.0
SINCE 7/1         0.0               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       8                22     -14       18
 SINCE 7/1         19                34     -15       25
COOLING TOTAL     157               155       2      125
 SINCE 1/1        554               484      70      464
..................................................

WIND (MPH)
AVERAGE WIND SPEED              7.1
HIGHEST WIND SPEED/DIRECTION    31/280    DATE  08/20
HIGHEST GUST SPEED/DIRECTION    35/270    DATE  08/20

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            4
NUMBER OF DAYS PC             22
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     71

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                4     RAIN                       1
LIGHT RAIN               10     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      11     FOG W/VIS <= 1/4 MILE      1
HAZE                      0

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

&&

...COMFORTABLE MONTH OF AUGUST...

AUGUST TEMPERATURES STARTED OUT ON THE NEAR NORMAL TO COOLER THAN
NORMAL SIDE...UNTIL A WEEK LONG STRETCH OF ABOVE NORMAL TEMPERATURES
THAT BEGAN IN THE MIDDLE OF THE MONTH.  FROM THE 21ST THROUGH THE
29TH ALL BUT ONE OF THE NINE DAYS REACHED TEMPERATURES THAT WERE
ONLY NORMAL OR BELOW NORMAL DURING THIS STRETCH.  THE MONTH ENDED ON
A WARM NOTE WITH THE 30TH AND 31ST REACHING ABOVE NORMAL
TEMPERATURES. RAINFALL AMOUNTS WERE BELOW NORMAL THROUGH THE FIRST
THIRD OF THE MONTH...UNTIL THE ROCHESTER METRO AREA AND MANY OF THE
SURROUNDING SUBURBAN AREAS GOT INUNDATED BY ONE TO FOUR INCHES OF
RAINFALL DURING THE AFTERNOON AND EVENING ON AUGUST 10TH.  ANOTHER
BOUT OF HEAVY RAINFALL OCCURRED ON THE 20TH AS A COLD FRONT MOVED
THROUGH THE AREA RESULTING IN ONE TO TWO INCHES OF RAINFALL IN A
SHORT AMOUNT OF TIME...RESULTING IN SOME FLOODING AROUND THE
ROCHESTER AREA.

THE AVERAGE TEMPERATURE FOR AUGUST WAS 69.5 DEGREES WHICH IS JUST
TWO TENTHS OF A DEGREE ABOVE NORMAL.  THE LONGEST STRETCH OF ABOVE
OR BELOW NORMAL TEMPERATURES WAS SEVEN DAYS.  IN TOTAL THERE WERE 14
DAYS ABOVE NORMAL AND 15 DAYS BELOW NORMAL.  THE WARMEST DAY THIS
MONTH WAS THE 17TH WHEN THE TEMPERATURE REACHED 89 DEGREES.  OTHER
THAN THIS TEMPERATURE READING...THE MONTH GENERALLY FINISHED NEAR
NORMAL WITH 22 OF 31 DAYS HAVING TEMPERATURES WITHIN FIVE DEGREES OF
NORMAL.  THERE WERE 12 DAYS THAT REACHED 80F OR GREATER...WHICH IS
TWO LESS THAN NORMAL.

PRECIPITATION FINISHED ABOVE NORMAL FOR THE MONTH WITH 4.67 INCHES
OF RAINFALL...WHICH IS 1.20 INCHES ABOVE NORMAL.  90 PERCENT OF THE
RAINFALL AT THE ROCHESTER AIRPORT FOR THE MONTH FELL ON THE 10TH AND
20TH...THE ROCHESTER AIRPORT RECEIVED 2.38 INCHES OF RAIN FOR THE
DAY ON AUGUST 10TH...AND 1.93 INCHES OF RAIN ON THE 20TH...WITH A
TOTAL OF 4.31 INCHES OF RAINFALL FOR THE TWO DAYS.  THE MONTH
FINISHED WITH NINE DAYS OF MEASURABLE RAINFALL...TWO DAYS WITH
GREATER THAN ONE QUARTER OF AN INCH AND TWO DAYS WITH GREATER THAN A
HALF OF AN INCH.

AUGUST STARTED OUT DRY FOR THE MOST PART...WITH ONLY 13 HUNDREDTHS
OF AN INCH OF RAINFALL THROUGH AUGUST 9TH AT THE ROCHESTER AIRPORT.
A COLD FRONT MOVED THROUGH WESTERN NEW YORK DURING THE LATE EVENING
AND EARLY MORNING OF AUGUST 3RD AND 4TH RESPECTIVELY WITH A TENTH OF
AN INCH OF RAINFALL FOR THE DAY ON AUGUST 4TH. THE NEXT FIVE DAYS
FEATURED ONLY A TRACE OF RAINFALL AND BELOW NORMAL TEMPERATURES.
RAIN RETURNED ON AUGUST 10TH...WITH ACCUMULATIONS RANGING FROM ONE
TO FOUR INCHES ACROSS THE ROCHESTER METRO AREA AND SURROUNDING
SUBURBS...AS AN AREA OF LOW PRESSURE AND ASSOCIATED FRONTAL SYSTEM
MOVED THROUGH THE AREA DURING THE EVENING.  SOME FLASH FLOODING
OCCURRED IN WAYNE COUNTY DURING THE AFTERNOON OF AUGUST 10TH AS A
RESULT OF THE HEAVY RAINFALL.  DURING THE AFTERNOON AND EVENING ON
AUGUST 14TH AND EARLY MORNING OF AUGUST 15TH SHOWERS AND
THUNDERSTORMS FORMED ALONG A SHORTWAVE TROUGH AND ASSOCIATED FRONTAL
BOUNDARY OVER WESTERN NEW YORK...24 HOUR RAINFALL AMOUNTS OF A HALF
INCH OR LESS WERE COMMON IN MONROE COUNTY...WITH A FEW ISOLATED TWO
INCH AMOUNTS IN NORTHWESTERN MONROE COUNTY.  WARMER AND MORE HUMID
AIR FOLLOWED FOR THE FOLLOWING DAYS WITH THE TEMPERATURE REACHING 89
DEGREES ON THE 17TH.  A STRONG COLD FRONT MOVED THROUGH WESTERN NEW
YORK ON AUGUST 20TH...AS A RESULT...HEAVY RAINFALL ACCUMULATED TO
1.93 INCHES AT THE ROCHESTER AIRPORT...FLASH FLOODING WAS REPORTED
IN THE ROCHESTER METRO AREA AND SOME OF THE SURROUNDING SUBURBS.
ANOTHER COOLER AND MOSTLY DRY PERIOD FOLLOWED FROM AUGUST 21ST
THROUGH THE 29TH...WITH ONLY A HUNDREDTH OF AN INCH OF RAINFALL AT
THE ROCHESTER AIRPORT AND NORMAL OR BELOW NORMAL TEMPERATURES FOR
EIGHT OUT OF THE NINE DAYS DURING THIS TIME PERIOD. THE LAST TWO
DAYS OF THE MONTH RECEIVED WARMER THAN NORMAL TEMPERATURES WITH NO
RAINFALL.

WINDS WERE ABOVE NORMAL THIS MONTH...AVERAGING 7.1 MPH WHICH IS JUST
0.1 MPH ABOVE NORMAL.  THE STRONGEST WIND GUST OF 35 MPH CAME ON THE
20TH BEHIND A COLD FRONT.  LAKE ONTARIO STARTED OUT AT 74 DEGREES AT
THE BEGINNING OF THE MONTH...PEAKING AT 75 DEGREES BETWEEN AUGUST
3RD AND 6TH.  THE LAKE DROPPED TO ITS COOLEST TEMPERATURE OF 47
DEGREES ON AUGUST 10TH AND 11TH...WHEN UPWELLING WAS STRONGEST.

IN ALL A MOSTLY DRY MONTH...THAT ENDED UP WITH ABOVE NORMAL RAINFALL
DUE TO A FEW WET DAYS OF HEAVY RAIN.

&&

WELCH

$$


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