Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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000 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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