Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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CXUS51 KBUF 040155
CLMROC

CLIMATE REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
242 PM EDT FRI AUG 1 2014

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

...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF JULY 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2014

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             102   07/10/1936
                        07/09/1936
 LOW               42   07/09/1963
HIGHEST            89   07/01                         93  07/19
                                                          07/17
LOWEST             52   07/25                         50  07/25
                        07/05
AVG. MAXIMUM     78.5              81.0    -2.5     81.9
AVG. MINIMUM     60.0              60.7    -0.7     64.1
MEAN             69.3              70.8    -1.5     73.0
DAYS MAX >= 90      0               2.3    -2.3        5
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         9.70   1947
 MINIMUM         0.43   1933
TOTALS           7.70              3.33    4.37     4.41
DAYS >= .01        13                                 13
DAYS >= .10        10                                  6
DAYS >= .50         4                                  2
DAYS >= 1.00        3                                  1
GREATEST
 24 HR. TOTAL    3.07   07/27 TO 07/28           07/03 TO 07/04
                                                          07/31 TO 07/31
                                                          07/31 TO 07/31

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   07/31 TO 07/31           07/31 TO 07/31
                                                          07/31 TO 07/31
                                                          07/31 TO 07/31

DEGREE_DAYS
HEATING TOTAL       7                12      -5        8
 SINCE 7/1          7                12      -5        8
COOLING TOTAL     150               193     -43      261
 SINCE 1/1        339               329      10      439
..................................................

WIND (MPH)
AVERAGE WIND SPEED              7.1
HIGHEST WIND SPEED/DIRECTION    30/250
HIGHEST GUST SPEED/DIRECTION    43/240    DATE  07/08

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            5
NUMBER OF DAYS PC             18
NUMBER OF DAYS CLOUDY          8

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              8     MIXED PRECIP               0
HEAVY RAIN                7     RAIN                       8
LIGHT RAIN               15     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      15     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.

&&

...COOL AND WET MONTH FOR WESTERN NEW YORK...

SUMMER`S HEAT WAS HARD TO COME BY THIS MONTH AS ANY BUILDING WARMTH
WAS QUICKLY ERASED BY A SURGE OF COOLER AIR. THOUGH COOL FOR THE
MONTH...THERE WERE STILL A NUMBER OF COMFORTABLE DAYS FOR MOST
OUTDOOR ACTIVITIES. THUNDERSTORMS...SOME WITH TORRENTIAL DOWNPOURS
BROUGHT FLOODING AND HIGHER THAN NORMAL JULY RAINFALL.

THE AVERAGE TEMPERATURE OF 69.2F WAS ABOUT A DEGREE AND A HALF BELOW
THE NORMAL OF 71.1F. THERE WERE NO 90 DEGREE DAYS THIS MONTH AND
THERE WERE ONLY 12 DAYS IN THE 80S. THIS MONTH WAS THE COOLEST JULY
SINCE 2009 WHEN THE AVERAGE TEMPERATURE WAS JUST 66.2F AND THE
NUMBER OF 80 DEGREE DAYS STOOD AT JUST FOUR. THERE WERE NO RECORDS THIS
MONTH AND THE WARMEST DAY OCCURRED ON THE 1ST WHEN THE TEMPERATURE
REACHED 89F.

RAINFALL WAS THE BIG STORY THIS MONTH. THE 7.70 INCHES OF
PRECIPITATION AT THE AIRPORT WAS THE 4TH GREATEST TOTAL IN ANY JULY.
THIS TOTAL WAS MORE THAN DOUBLE THE NORMAL AND NONE OF THE RAIN WAS
TROPICAL IN NATURE. THERE WERE THREE DATES WITH OVER AN INCH OF
RAINFALL (8TH, 27TH, AND 28TH). THERE HAVE BEEN ONLY FOUR OTHER
JULY`S IN HISTORY WITH AT LEAST THREE DAYS WITH AT LEAST AN INCH OF
RAINFALL...WITH THE LAST OCCURRING AS RECENTLY AS 2010 WHEN THERE
WERE FOUR DAYS WITH AT LEAST AN INCH OF RAINFALL. THERE WERE EIGHT
DAYS WITH THUNDER THIS MONTH. THERE WAS ALSO A NEW PRECIPITATION
RECORD SET...WITH THE 2.42 INCHES OF RAIN FALLING ON THE 28TH. THIS
RECORD RAINFALL WHEN ADDED TO THE RAIN THAT FELL ON THE 27TH (1.42
INCHES) BROUGHT THE 6TH WETTEST TWO-DAY RAINFALL EVENT TO ROCHESTER
IN THEIR 144 YEAR HISTORY.

THE OVERALL UPPER LEVEL PATTERN THIS MONTH FEATURED A TROUGH
EXTENDING SOUTHWARD FROM HUDSON BAY ACROSS THE GREAT LAKES REGION.
THIS ALLOWED FOR COOL AIR FROM THE NORTH TO PERIODICALLY DROP
SOUTHWARD ACROSS THE EASTERN GREAT LAKES REGION. WHILE THERE WERE
COOL PERIODS THERE WERE ALSO BRIEF STRETCHES OF SUMMER-TIME WARMTH.
JULY`S WARMEST DAY CAME ON THE 1ST AND THIS WARMTH CONTINUED INTO
THE 2ND DAY OF THE MONTH WITH JUST SOME SCATTERED EVENING SHOWERS
AND THUNDERSTORMS. A SLOW MOVING COLD FRONT BROUGHT A LITTLE MORE
ACTIVITY ON THE 3RD...WITH SHOWERS AND THUNDERSTORMS CLEARING THE
REGION BY THE START OF THE 4TH OF JULY. A SPLENDID 3-DAY HOLIDAY WEEKEND
ENSUED WITH PLENTY OF SUNSHINE AND SEASONABLE TEMPERATURES. A WARM
FRONT LIFTED NORTHWARD ACROSS THE EASTERN GREAT LAKES REGION ON THE
7TH AND THUNDERSTORMS ALONG THIS BOUNDARY SOAKED ROCHESTER WITH A
HALF INCH OF RAINFALL. THE FIRST MAJOR OUTBREAK OF SEVERE
THUNDERSTORMS THIS MONTH OCCURRED ON THE 8TH. A MINIATURE DERECHO
WITH INTENSE RAINFALL RATES UNFOLDED TUESDAY EVENING AND BROUGHT
WIDESPREAD DAMAGE ACROSS SOUTHERN NEW YORK STATE...AND INTO THE
GENESEE VALLEY.

THROUGH THE MIDDLE PORTION OF JULY AIRMASSES ALTERNATED BETWEEN WARM
AND MUGGY AND COOL AND DRY. THUNDERSTORMS AS THESE AIRMASSES
CLASHED OCCURRED THROUGH THE MONTH...THOUGH MOST STORMS WERE
RELATIVELY TAME. A FEW STORMS DEVELOPED ON THE 14TH ON AN OLD
OUTFLOW BOUNDARY AND DID BRING LOCALIZED HAIL AND HEAVY
DOWNPOURS...WITH SOME DAMAGE ACROSS THE NORTHERN FINGER LAKES
REGION. TEMPERATURES WARMED AGAIN WITH SUMMER`S WARMTH OF
TEMPERATURES IN THE 80S FOUND ACROSS THE REGION FROM THE 21ST
THROUGH THE 23RD. AHEAD OF A DEEP UPPER LEVEL LONG WAVE TROUGH
MOISTURE LADEN STORMS BROUGHT FLOODING RAINS TO THE GENESEE VALLEY
ON THE 27TH AND 28TH WITH SEVERAL ROADS SUSTAINING SEVERE DAMAGE.
THE MONTH FINISHED COOL TO END THE MONTH WITH A FALLISH FEEL TO THE
AIR.

WINDS WERE AGAIN LIGHT THIS MONTH AND THE STRONGEST GUST OF 43 MPH
OCCURRED WITHIN A THUNDERSTORM ON JULY 8TH.

OVERALL A COOL AND WET MONTH FOR WESTERN NEW YORK.

&&

THOMAS

$$






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