Climatological Report (Seasonal)
Issued by NWS
Issued by NWS
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000 CXUS53 KIWX 011524 CLSSBN CLIMATE REPORT NATIONAL WEATHER SERVICE NORTHERN INDIANA 1124 AM EDT FRI SEP 01 2023 ................................... ...THE SOUTH BEND CLIMATE SUMMARY FOR THE SEASON, SUMMER 2023... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1893 TO 2023 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE NORMAL .............................................................. TEMPERATURE (F) RECORD HIGH 109 07/24/1934 LOW 35 06/11/1972 06/02/1956 06/16/1917 HIGHEST 96 08/24 81 15 99 LOWEST 44 06/08 61 -17 45 AVG. MAXIMUM 81.7 81.0 0.7 83.6 AVG. MINIMUM 60.3 60.2 0.1 61.8 MEAN 71.0 70.6 0.4 DAYS MAX >= 90 10 11.3 -1.3 15 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 19.30 2016 MINIMUM 5.62 1991 TOTALS 12.17 11.83 0.34 9.89 DAILY AVG. 0.13 0.13 0.00 0.11 DAYS >= .01 25 30.5 -5.5 30 DAYS >= .10 19 20.4 -1.4 17 DAYS >= .50 8 8.1 -0.1 9 DAYS >= 1.00 4 2.6 1.4 3 GREATEST 24 HR. TOTAL 3.47 SNOWFALL (INCHES) RECORDS TOTAL MM MM 24 HR TOTAL MM TOTALS 0.0 0.0 0.0 0.0 SINCE 7/1 0.0 0.0 0.0 0.0 SNOWDEPTH AVG. 0 0 DAYS >= TRACE 0 0.0 0.0 0 DAYS >= 1.0 0 0.0 0.0 0 GREATEST SNOW DEPTH 0 0 24 HR TOTAL 0.0 DEGREE DAYS HEATING TOTAL 37 64 -27 17 SINCE 7/1 3 14 -11 0 COOLING TOTAL 614 581 33 753 SINCE 1/1 678 637 41 870 .............................................................. WIND (MPH) AVERAGE WIND SPEED 6.8 HIGHEST WIND SPEED/DIRECTION 51/200 DATE 07/05 HIGHEST GUST SPEED/DIRECTION 80/220 DATE 07/05 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.30 NUMBER OF DAYS FAIR 61 NUMBER OF DAYS PC 22 NUMBER OF DAYS CLOUDY 9 AVERAGE RH (PERCENT) 69 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 17 MIXED PRECIP 0 HEAVY RAIN 15 RAIN 18 LIGHT RAIN 35 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 56 FOG W/VIS <= 1/4 MILE 9 HAZE 37 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && FLASH-DROUGHT CONDITIONS TO THE START OF THE SUMMER EASED DURING THE MONTH OF AUGUST IN THE WAKE OF A VERY WET JULY. HOWEVER, DRY CONDITIONS IN THE FINAL DAYS OF AUGUST RENEWED DROUGHT CONCERNS. WHILE MUCH OF THE SOUTHERN PLAINS, AND CENTRAL PLAINS AT TIMES, ROASTED BENEATH A STRONG RIDGE THIS SUMMER, OUR SUMMER AVERAGE TEMPERATURE ENDED UP NEAR NORMAL. THE AVERAGE TEMPERATURE OF 71.0 DEGREES WAS ONLY 0.4 DEGREES ABOVE NORMAL. THIS SUMMER RECORDED TEN 90-DEGREE DAYS THIS SUMMER. THIS IS RIGHT NEAR THE SUMMER NORMAL OF 11 DAYS. PRECIPITATION TOTALED 12.17 INCHES WHICH IS 0.34 INCHES ABOVE NORMAL. A MONTH-BY-MONTH SUMMARY IS BELOW. JUNE ....CONTINUED DROUGHT STRESSES CROPS... FLASH DROUGHT CONDITIONS DEVELOPED LAST MONTH AND DRY WEATHER PERSISTED THROUGH JUNE WITH ONLY A COUPLE EXCEPTIONS. ACCORDING TO THE US DROUGHT MONITOR, "ABNORMALLY DRY" CONDITIONS WERE PRESENT ON MAY 30TH. BY LATE-JUNE, A "MODERATE DROUGHT" AND "SEVERE DROUGHT" WERE UNDERWAY IN NORTHERN INDIANA AND SOUTHERN LOWER MICHIGAN. IRRIGATION BECAME MORE COMMON TO COMBAT CROP STRESS. DRY SOIL, LARGE EVAPOTRANSPIRATION RATES, AND LOW WATER LEVELS OF CREEKS, STREAMS, AND PONDS WERE REPORTED. SOUTH BEND RECORDED 2.25 INCHES OF PRECIPITATION THIS MONTH, WHICH IS 1.79 INCHES BELOW NORMAL. THIS RANKS AS THE 35TH DRIEST ON RECORD AND WAS NEARLY AS DRY AS LAST JUNE (2.23). JUNE OF 2012, A NOTABLE DROUGHT YEAR, RECORDED 1.53 INCHES. THE LARGEST 24 HOUR RAINFALL OF 0.79 INCHES OCCURRED ON JUNE 13TH. PRIOR TO 0.78 AND 0.28 INCHES OF RAIN FALLING ON THE 25TH AND 26TH, RESPECTIVELY, SOUTH BEND WAS ON PACE TO BE THE 19TH DRIEST JUNE ON RECORD. THE AVERAGE TEMPERATURE FOR THE MONTH OF 68.8 DEGREES MATCHES THE NORMAL. WHILE THE FIRST FEW DAYS OF JUNE STARTED VERY WARM, A PERIOD OF COOL WEATHER EMERGED FROM THE 7TH THROUGH 18TH. BENEFICIAL RAIN OCCURRED DURING THIS TIME, AS DID COOL NORTHERLY FLOW. NO RECORDS WERE SET THIS MONTH. BROWN/JOHNSON JULY ...SECOND WETTEST JULY ON RECORD... WHILE THE SOUTHWEST US ROASTED BENEATH A PERSISTENT RIDGE OF HIGH PRESSURE, THIS SAME PATTERN BROUGHT SOMEWHAT COOL NORTHWEST FLOW AND FREQUENT THUNDERSTORMS TO THE AREA. DROUGHT CONDITIONS IMPROVED AS A RESULT. ON JUNE 27TH, THE US DROUGHT MONITOR INDICATED ABOUT 87% OF THE FORECAST AREA WAS EXPERIENCING MODERATE DROUGHT OR SEVERE DROUGHT. BY JULY 25TH, THIS WAS DOWN TO ONLY 28%. PRECIPITATION TOTALED A WHOPPING 7.81 INCHES WHICH IS THE SECOND MOST ON RECORD (BEHIND 2006 WITH 8.66 INCHES). THIS IS 4.03 INCHES ABOVE NORMAL. FROM THE 26TH THROUGH 30TH, 4.53 INCHES OF RAIN WAS RECORDED THANKS TO "RIDGE RUNNING" THUNDERSTORMS. ONE RECORD WAS TIED THIS MONTH: 1.78 INCHES OF RAIN ON 28TH TIED THE RECORD FROM 1971. THERE WERE FOUR DAYS THIS MONTH WITH A HIGH OF 90 DEGREES OR MORE, WHICH IS TIED WITH JULY 2022 AND IS JUST BELOW THE NORMAL JULY TOTAL OF ABOUT FIVE. SO FAR THIS SUMMER THERE HAVE BEEN EIGHT 90-DEGREE DAYS WHICH IS JUST SHY OF THE NORMAL OF 11 DAYS. THE AVERAGE TEMPERATURE FOR THE MONTH WAS 72.7 DEGREES WHICH IS RIGHT NEAR NORMAL. THIS IS THE COOLEST JULY SINCE 72.6 DEGREES IN 2018. LASTLY, ON JULY 5TH THE ASOS RECORDED AN 80 MPH WIND GUST AS A THUNDERSTORM COLLAPSED NEARBY. THIS APPEARS TO BE THE GREATEST WIND GUST RECORDED AT THIS STATION THROUGH AT LEAST 1993, ACCORDING TO MIDWESTERN REGIONAL CLIMATE CENTER. BROWN/MURPHY ...AUGUST... UNCOMFORTABLY HOT AND HUMID FOR A FEW DAYS THIS MONTH, OTHERWISE COOL THANKS TO RATHER PERSISTENT NORTHWEST FLOW ALOFT. THIS PATTERN IS GENERALLY NOT CONDUCIVE FOR RAINFALL, WHICH IS REFLECTED BY BELOW- NORMAL PRECIPITATION. FOLLOWING THE SECOND-WETTEST JULY ON RECORD, THE SO-CALLED FAUCET TURNED OFF AND THE MONTH ENDED WITH ONLY 2.11 INCHES OF PRECIPITATION; 1.90 INCHES BELOW NORMAL. THIS RANKS AS THE 31ST DRIEST ON RECORD. THIS WAS ONLY SLIGHTLY MORE THAN AUGUST 2022, WHEN 2.03 INCHES WAS RECORDED. THE STATE OF INDIANA HAS GENERALLY BEEN WORKING ITS WAY OUT OF ABNORMALLY DRY OR DROUGHT CONDITIONS THIS SUMMER. HOWEVER, ABNORMALLY DRY CONDITIONS LOOM AGAIN AS SOUTH BEND HAS ONLY RECORDED A TRACE OF RAIN SINCE AUGUST 18. AN UPPER-LEVEL RIDGE THAT HAS DOMINATED THE SOUTHERN PLAINS THIS SUMMER WAS NUDGED EASTWARD INTO THE GREAT LAKES FOR A FEW DAYS LATE THIS MONTH. THIS RESULTED IN WELL-ABOVE NORMAL DAILY TEMPERATURES FROM THE 20TH THROUGH 26TH. THE PEAK OF THE HEAT OCCURRED ON THE 23RD AND 24TH WHEN SOUTH BEND RECORDED A HEAT INDEX OF 114 AND 115, RESPECTIVELY. ACCORDING TO THE MIDWESTERN REGIONAL CLIMATE CENTER, FROM 1973 TO 2018, SOUTH BEND SEES WELL LESS THAN 1 HOUR ON AVERAGE ANNUALLY WITH A HEAT INDEX OF 110 IN AUGUST. ONE RECORD WAS SET THIS MONTH. THE LOW TEMPERATURE OF 77 ON THE 24TH WAS THE WARMEST LOW TEMPERATURE RECORDED. IT BREAKS THE PREVIOUS RECORD OF 75 SET IN 1975. THE AVERAGE TEMPERATURE FOR THE MONTH WAS 71.5 DEGREES WHICH IS NEAR THE NORMAL OF 70.7 DEGREES. BROWN $$