Climatological Report (Monthly)
Issued by NWS Buffalo, NY
Issued by NWS Buffalo, NY
942 CXUS51 KBUF 020158 CLMROC CLIMATE REPORT NATIONAL WEATHER SERVICE BUFFALO NY 1110 AM EDT THU AUG 01 2024 ................................... ...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF JULY 2024... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1871 TO 2024 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 90 07/03 91 07/06 07/14 07/30 LOWEST 52 07/02 56 07/30 07/31 AVG. MAXIMUM 84.0 82.5 1.5 81.2 AVG. MINIMUM 64.2 62.2 2.0 62.6 MEAN 74.1 72.3 1.8 71.9 DAYS MAX >= 90 3 3.5 -0.5 1 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 2.56 3.56 -1.00 6.81 DAYS >= .01 12 16 DAYS >= .10 5 13 DAYS >= .50 3 6 DAYS >= 1.00 0 0 GREATEST 24 HR. TOTAL 1.17 07/15 TO 07/16 1.30 07/02 TO 07/03 SNOWFALL (INCHES) RECORDS TOTAL MM MM TOTALS 0.0 0.0 0.0 0.0 SINCE 7/1 0.0 0.0 0.0 MM SNOWDEPTH AVG. 0 0 DAYS >= 1.0 0 0.0 0.0 0 DAYS >= 0.1 0 0 GREATEST SNOW DEPTH 0 0 MM 24 HR TOTAL MM MM DEGREE DAYS HEATING TOTAL 0 6 -6 0 SINCE 7/1 0 0 0 MM COOLING TOTAL 289 234 55 222 SINCE 1/1 528 406 122 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 6.6 HIGHEST WIND SPEED/DIRECTION 33/240 DATE 07/14 HIGHEST GUST SPEED/DIRECTION 40/240 DATE 07/14 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.58 NUMBER OF DAYS FAIR 6 NUMBER OF DAYS PC 17 NUMBER OF DAYS CLOUDY 8 AVERAGE RH (PERCENT) 69 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 5 MIXED PRECIP 0 HEAVY RAIN 3 RAIN 4 LIGHT RAIN 16 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 8 FOG W/VIS <= 1/4 MILE 0 HAZE 0 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && ... STORMY, HUMID JULY, RECORD NUMBER OF TORNADOES ... FOR A REGION WHERE TORNADO OCCURRENCES ARE INFREQUENT, SWARMS OF TORNADOES THIS JULY BROUGHT A TOTAL OF 9 TORNADOES TO WESTERN NEW YORK, WITH THESE TORNADO TOUCHDOWNS SPANNING FROM CHAUTAUQUA COUNTY TO OSWEGO COUNTY, SOUTH OF THE METRO AREAS OF BUFFALO AND ROCHESTER. THE PRELIMINARY TOTAL FOR NEW YORK STATE IS 23 TWISTERS TOUCHING DOWN, A RECORD FOR THE STATE FOR THE MONTH OF JULY AND THE 9 TORNADOES FOR WESTERN NEW YORK BROKE THE RECORD OF 5 FOR JULY SET IN 2009 AND 2010. THIS YEAR ALSO CONTINUED TO BE WARM, WITH JULY ANOTHER PERSISTENTLY WARM MONTH WITH THE AVERAGE TEMPERATURE FOR JULY WELL ABOVE NORMAL. THE TEMPERATURE AVERAGED 74.1F THIS MONTH, TIED FOR 17TH WARMEST ON RECORD. THIS IS THE 8TH CONSECUTIVE MONTH FEATURING ABOVE NORMAL TEMPERATURE WARMTH. ABOVE NORMAL TEMPERATURE DAYS OUTWEIGHED BELOW NORMAL TEMPERATURE DAYS 22 TO 9. THERE WAS NO EXTREME HEAT THIS MONTH, WITH THE GREATEST AVERAGE TEMPERATURE DEPARTURE 9 DEGREES OCCURRING ON THE 3RD. THERE WERE 26 DAYS THAT REACHED INTO THE 80S, 5 DAYS MORE THAN THE AIRPORT TYPICAL TOTAL AND THESE 26 DAYS RANKED TIED FOR 11TH GREATEST FOR JULY. PRECIPITATION TOTALED 2.56 INCHES, WHICH IS EXACTLY 1.00 INCHES BELOW NORMAL. MEANINGFUL RAIN THIS MONTH WAS CONCENTRATED TOWARDS THE MIDDLE, WITH A DAILY RECORD 0.89 INCHES ON THE 10TH FOLLOWED BY 0.51 INCHES ON THE 15TH AND 0.66 INCHES OF PRECIPITATION ON THE 16TH. THERE WERE DRY STRETCHES, WITH A TWO WEEK PERIOD FROM THE 17TH TO THE 30TH RECORDING JUST FOUR-HUNDREDTHS OF AN INCH OF RAIN, BUT EARLIER RAINS IN THE MONTH GAVE ENOUGH RESERVE TO KEEP AREA VEGETATION FROM DRYING OUT. HIGH PRESSURE STARTED JULY WITH COMFORTABLE LEVELS OF HUMIDITY, AND PRECIPITATION FREE DAYS. BEHIND THIS SURFACE HIGH, THE HUMIDITY STARTED TO BUILD THROUGH THE REMAINDER OF THE FIRST WEEK OF THE MONTH, WITH ISOLATED SHOWERS AND THUNDERSTORMS. THE REMNANTS OF BERYL SPUN ACROSS THE REGION ON THE 10TH WITH NUMEROUS SHOWERS AND THUNDERSTORMS. SEVERAL SPIN-UPS OCCURRED WITHIN THESE THUNDERSTORMS, WITH A TOTAL OF 6 CONFIRMED TORNADOES, 4 OF WHICH OCCURRED IN CHAUTAUQUA, ERIE AND GENESEE COUNTIES, WITH ANOTHER 2 OCCURRING IN WAYNE AND OSWEGO COUNTIES. IN ADDITION, DAMAGING WINDS BROUGHT DOWN SEVERAL TREES AND WIRES THROUGH WESTERN NEW YORK. IT REMAINED WARM THROUGH MID-MONTH, WITH WIDESPREAD DRENCHING THUNDERSTORMS ON THE 15TH AND 16TH. THE 15TH ALSO BROUGHT A SECOND DAY OF WIDESPREAD DAMAGING THUNDERSTORMS TO WESTERN NEW YORK. A SPIN IN THE MID ATMOSPHERE, A MESOSCALE CONVECTIVE VORTEX, AIDED IN THE FORMATION OF AN ADDITIONAL 2 TORNADOES ON THE 15TH, WITH ONE EACH TOUCHING DOWN IN GENESEE AND ONTARIO COUNTIES. THUNDERSTORMS ALSO PRODUCED 2.5- INCH HAIL IN ONTARIO COUNTY, THIS IN ADDITION TO DAMAGING WIND GUSTS THROUGH THE GENESEE VALLEY. FOLLOWING THESE STORMS, A COLD FRONT PASSED ACROSS THE REGION ON THE 17TH SENDING HUMIDITY, SHOWERS AND THUNDERSTORMS EASTWARD. THREE BEAUTIFUL DRY DAYS OCCURRED ON THE 18TH TO THE 20TH LEADING INTO A PLEASANT WEEKEND. A FEW SHOWERS AND THUNDERSTORMS AGAIN OCCURRED THROUGH THE LAST FULL WORK WEEK OF JULY BEFORE AGAIN A COLD FRONT LATE WEDNESDAY NIGHT BROUGHT BACK BEAUTIFUL WEATHER TO FINISH THE WEEK AND WEEKEND. A FEW SHOWERS AND THUNDERSTORMS CLOSED OUT THE MONTH ACROSS WESTERN NEW YORK, THOUGH ACTIVITY REMAINED BELOW SEVERE THRESHOLDS. THE TEMPERATURE ON LAKE ONTARIO ROSE TO 76F THE FINAL DAYS OF THE MONTH. THE WINDS AVERAGED BELOW NORMAL FOR JULY, AND THE STRONGEST GUST WAS 40 MPH FROM THE SOUTHWEST DURING THE MIDDAY HOURS OF THE 14TH. IN ALL, JULY 2024 WILL BE NOTED FOR THE LARGE NUMBER OF TORNADOES BY WESTERN NEW YORK STANDARDS, IN ADDITION TO PERSISTENT HUMIDITY AND VERY WARM DAYS. && THOMAS $$