Climatological Report (Monthly)
Issued by NWS Buffalo, NY
Issued by NWS Buffalo, NY
000 CXUS51 KBUF 052028 CLMROC CLIMATE REPORT NATIONAL WEATHER SERVICE BUFFALO NY 946 AM EDT MON MAY 01 2023 ................................... ...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF APRIL 2023... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1871 TO 2023 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 93 04/28/1990 04/30/1970 LOW 11 04/04/1879 HIGHEST 84 04/14 81 04/24 04/25 LOWEST 25 04/02 27 04/18 AVG. MAXIMUM 61.4 56.6 4.8 55.9 AVG. MINIMUM 39.0 37.1 1.9 36.9 MEAN 50.2 46.8 3.4 46.4 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 0 0.4 -0.4 0 DAYS MIN <= 32 6 9.9 -3.9 9 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 5.81 2011 MINIMUM 0.94 1884 TOTALS 3.34 2.99 0.35 2.58 DAYS >= .01 15 15 DAYS >= .10 9 10 DAYS >= .50 3 1 DAYS >= 1.00 0 0 GREATEST 24 HR. TOTAL 0.71 03/31 TO 04/01 0.76 04/25 TO 04/26 SNOWFALL (INCHES) RECORDS TOTAL 23.8 1901 TOTALS T 3.0 -3.0 T SINCE 7/1 50.4 101.9 -51.5 MM SNOWDEPTH AVG. 0 0 DAYS >= 1.0 0 1.0 -1.0 MM DAYS >= 0.1 0 MM GREATEST SNOW DEPTH 0 0 MM 24 HR TOTAL MM T 04/01 TO 04/01 04/03 TO 04/03 04/09 TO 04/09 DEGREE DAYS HEATING TOTAL 447 549 -102 551 SINCE 7/1 5505 5993 -488 MM COOLING TOTAL 8 4 4 2 SINCE 1/1 8 4 4 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 10.0 HIGHEST WIND SPEED/DIRECTION 39/250 HIGHEST GUST SPEED/DIRECTION 56/210 DATE 04/22 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.65 NUMBER OF DAYS FAIR 6 NUMBER OF DAYS PC 8 NUMBER OF DAYS CLOUDY 16 AVERAGE RH (PERCENT) 63 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 2 MIXED PRECIP 1 HEAVY RAIN 2 RAIN 8 LIGHT RAIN 16 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 6 SLEET 3 FOG 11 FOG W/VIS <= 1/4 MILE 0 HAZE 1 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && ...SIGNIFICANT WARMING EARLY AND MID-MONTH, DISMAL END TO APRIL... THE FIRST HALF OF APRIL FEATURED AN ABUNDANCE OF FANTASTIC DAYS ACROSS WESTERN NEW YORK AS THE REGION RECORDED A DRY 10-DAY STRETCH AND LATER IN THE MONTH FIVE CONSECUTIVE DAYS ABOVE 75F. A DRAMATIC TURN IN THE WEATHER OCCURRED FOR THE SECOND HALF OF THE MONTH AS COOL AND WET DAYS BECAME PREDOMINANT. THE WARMTH THROUGH MID-MONTH CARRIED APRIL TO A TOP 10 WARMEST APRILS ON RECORD. THE TEMPERATURE AVERAGED 50.2F DEGREES FOR APRIL, THE 9TH WARMEST OF 153 APRILS ON RECORD. HIGHLIGHTS INCLUDE THE FIVE DAYS ABOVE 75F FROM THE 12TH TO THE 16TH. THE 7 DAYS IN TOTAL AT OR ABOVE 75F IS TIED FOR 5TH GREATEST ON APRIL RECORD. WHILE THERE WERE NO DAILY RECORD HIGH TEMPERATURES, THERE WAS ONE RECORD WARM MINIMUM RECORD ESTABLISHED, THIS THE 59F ON THE 13TH BREAKING THE FORMER RECORD OF 58F SET BACK IN 1896. THERE WERE AN EQUAL NUMBER OF ABOVE AND BELOW NORMAL TEMPERATURE DAYS. PRECIPITATION TOTALED 3.34 INCHES FOR THE MONTH, FINISHING ABOUT A THIRD OF AN INCH ABOVE NORMAL FOR THE MONTH. ALL FOUR MONTHS TO START THE YEAR HAVE MEASURED ABOVE NORMAL PRECIPITATION. ON THE 1ST THE 0.71 INCHES OF PRECIPITATION WAS THE WETTEST DAY FOR THE MONTH. FROM THE 6TH TO THE 15TH NO MEASURABLE PRECIPITATION WAS RECORDED. THERE WERE 8 DAYS THAT RECORDED A TRACE OF SNOW. A TRACE OR MORE OF SNOW HAS FALLEN IN ALL BUT ONE (1998) OF ROCHESTER`S SNOW PERIOD OF RECORD. APRIL BEGAN WITH A PAIR OF COLD FRONTS, ONE THAT BROUGHT EARLY MORNING RAIN, AND A SECOND THAT BROUGHT STRONG THUNDERSTORMS ACROSS WESTERN NEW YORK DURING THE AFTERNOON. SURFACE HIGH PRESSURE BROUGHT FAIR WEATHER ON THE 2ND, THIS PALM SUNDAY, WHICH WAS THEN FOLLOWED BY CLOUDS AND A WARM FRONT ON MONDAY THE 3RD. A FEW LIGHT RAIN SHOWERS FELL WITH THE WARM FRONT. ANOTHER FRONTAL BOUNDARY STALLED OVER THE REGION ON THE 4TH AND 5TH WITH OVER AN INCH OF RAIN FALLING WITH THIS FRONT. THIS FRONT NUDGED NORTHWARD SOME ON THE 5TH ALLOWING FOR A BRIEF PERIOD IN THE UPPER 70S BEFORE THE FRONT DROPPED SOUTHWARD AND COOLER LAKE ONTARIO SOURCED AIR POURED SOUTHWARD ACROSS ROCHESTER LATER IN THE DAY. WHILE A SPRINKLE FELL ON THE 6TH, MUCH DRIER AIR PUSHED INTO THE REGION AND COMMENCED A BEAUTIFUL, DRY 10-DAY STRETCH OF EARLY SPRING WEATHER THAT WAS VERY MUCH WARRANTED AFTER A WET START TO SPRING. IN THIS DRY AIRMASS THE GROUND QUICKLY DRIED OUT AND THE TEMPERATURE SOARED TO 81F ON THE 13TH, AND THEN 84F ON FRIDAY THE 14TH, THIS THE WARMEST DAY OF THE MONTH. THE AIR TEMPERATURE RETURNED INTO THE 80S ON THE 16TH BEFORE A COLD FRONT ARRIVED LATER THAT DAY AND BROUGHT SHOWERS AND GUSTY WINDS. THIS COLD FRONT ALSO SIGNALED A PATTERN CHANGE AS ONLY 2 DAYS THE FINAL HALF OF APRIL REMAINED DRY. THERE WERE ALSO NUMEROUS LIGHT SNOW AND GRAUPEL SHOWERS THIS MONTH, INCLUDING A STRETCH FROM THE 17TH TO 20TH AND AGAIN FROM THE 24TH TO 26TH.   WINDS WERE NEARLY NORMAL FOR THE MONTH AT 10.0 MPH. THE STRONGEST WIND GUST OCCURRED ON THE 22ND, THIS AT 56 MPH DURING A MIDDAY COLD FRONT PASSAGE.  IN ALL, A BEAUTIFUL, WARM MID-APRIL, BUT A DREARY END. && THOMAS $$