Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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000 CXUS51 KBUF 052026 CLMBUF CLIMATE REPORT NATIONAL WEATHER SERVICE BUFFALO NY 946 AM EDT MON MAY 01 2023 ................................... ...THE BUFFALO 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 94 04/28/1990 LOW 5 04/01/1923 HIGHEST 86 04/16 79 04/24 LOWEST 25 04/02 28 04/18 AVG. MAXIMUM 59.5 54.7 4.8 54.1 AVG. MINIMUM 39.5 36.5 3.0 36.8 MEAN 49.5 45.6 3.9 45.5 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 0 0.5 -0.5 0 DAYS MIN <= 32 5 9.3 -4.3 9 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 6.38 2017 MINIMUM 0.59 1915 TOTALS 4.57 3.37 1.20 2.79 DAYS >= .01 16 16 DAYS >= .10 11 9 DAYS >= .50 3 1 DAYS >= 1.00 1 0 GREATEST 24 HR. TOTAL 1.14 03/31 TO 04/01 0.80 04/25 TO 04/25 SNOWFALL (INCHES) RECORDS TOTAL 15.7 1885 TOTALS T 2.5 -2.5 2.2 SINCE 7/1 133.6 95.4 38.2 SNOWDEPTH AVG. 0 0 DAYS >= 1.0 0 0.8 -0.8 MM DAYS >= 0.1 0 MM GREATEST SNOW DEPTH 0 1 04/27 24 HR TOTAL MM DEGREE DAYS HEATING TOTAL 466 584 -118 579 SINCE 7/1 5441 6159 -718 MM COOLING TOTAL 6 2 4 0 SINCE 1/1 6 2 4 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 10.8 HIGHEST WIND SPEED/DIRECTION 41/240 HIGHEST GUST SPEED/DIRECTION 59/240 DATE 04/16 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM NUMBER OF DAYS FAIR 6 NUMBER OF DAYS PC 7 NUMBER OF DAYS CLOUDY 17 AVERAGE RH (PERCENT) 65 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 5 MIXED PRECIP 1 HEAVY RAIN 4 RAIN 12 LIGHT RAIN 17 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 3 HEAVY SNOW 0 SNOW 1 LIGHT SNOW 3 SLEET 0 FOG 13 FOG W/VIS <= 1/4 MILE 0 HAZE 2 - 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 THREE CONSECUTIVE DAYS IN THE 80S. 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, WHILE RAINFALL ON THE FINAL DAY OF THE MONTH ALSO PUSHED APRIL INTO THE TOP 15 WETTEST APRILS. THE TEMPERATURE AVERAGED 49.5F DEGREES FOR APRIL, TIED FOR 9TH WARMEST OF 153 APRILS ON RECORD. HIGHLIGHTS INCLUDE THE THREE DAYS IN THE 80S ON APRIL 14TH THROUGH 16TH. OUTSIDE OF MARCH 2012, THIS IS THE EARLIEST 3 CONSECUTIVE 80 DEGREE READINGS IN APRIL ON RECORD. TWO OF THESE 80 DEGREE READINGS SET DAILY RECORDS, WITH THE 83F READING ON THE 14TH TYING THE FORMER RECORD OF 83 SET BACK IN 1883, AND THE 86F READING ON THE 16TH BREAKING THE FORMER RECORD OF 82F SET BACK IN 2012. ABOVE NORMAL TEMPERATURE DAYS OUTWEIGHED BELOW NORMAL TEMPERATURE 18 TO 12. OF THESE 18 DAYS, 10 DAYS AVERAGED 10 DEGREES OR GREATER ABOVE THEIR DAILY NORMAL.  PRECIPITATION TOTALED 4.57 INCHES FOR THE MONTH, FINISHING 14TH WETTEST OF 153 APRILS ON RECORD. ON THE 1ST THE 1.08 INCHES OF PRECIPITATION SET A NEW DAILY RECORD, BREAKING THE FORMER RECORD OF 0.68 INCHES SET BACK IN 1973. THERE WERE 3 DAYS WITH AT LEAST A HALF INCH OF PRECIPITATION, ONE MORE THAN NORMAL. FROM THE 6TH TO THE 15TH NO MEASURABLE PRECIPITATION WAS RECORDED. THERE WERE 4 DAYS THAT RECORDED A TRACE OF SNOW. A TRACE OR MORE OF SNOW HAS FALLEN IN ALL 140 APRILS OF BUFFALO`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. ALL TOLD, THE 1.08 INCHES OF PRECIPITATION SET A NEW DAILY PRECIPITATION RECORD FOR THE 1ST. 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 BUFFALO 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 WITH A SOUTHEAST WIND TEMPERATURES SOARED TO 83F ON THE 14TH. ON SATURDAY 81F WAS RECORDED AND SUNDAY WAS THE WARMEST DAY IN THIS STRETCH OF WARM AIR WITH A READING OF 86F ON THE 16TH. A COLD FRONT ARRIVED LATER THAT DAY AND BROUGHT SHOWERS AND DAMAGING THUNDERSTORMS, A SUDDEN BURST OF WIND AND RAINFALL. THIS COLD FRONT ALSO SIGNALED A PATTERN CHANGE AS ONLY 3 DAYS THE FINAL HALF OF APRIL REMAINED DRY. ON THE 17TH AND 18TH ALONG WITH THE 24TH CONVECTIVE SHOWERS BROUGHT SMALL HAIL AND GRAUPEL TO THE BUFFALO METRO AREA.    LAKE ERIE`S WATER TEMPERATURE WARMED FROM 38F TO 47F DEGREES BY THE MONTH`S END. THE 47F DEGREE READING ON THE 26TH WAS THE QUICKEST LAKE ERIE HAS WARMED TO SUCH A MARK. WINDS WERE NORMAL FOR THE MONTH AT 10.8 MPH. WITHIN EARLY EVENING THUNDERSTORMS THE WINDS GUSTED TO 59 MPH, WITH THIS THE STRONGEST GUST FOR THE MONTH.   IN ALL, A BEAUTIFUL, WARM MID-APRIL, BUT A DREARY END.  && THOMAS $$

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