Climatological Report (Seasonal)
Issued by NWS
Issued by NWS
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000 CXUS53 KIWX 011449 CLSSBN CLIMATE REPORT NATIONAL WEATHER SERVICE NORTHERN INDIANA 949 AM EST TUE DEC 01 2020 ................................... ...THE SOUTH BEND CLIMATE SUMMARY FOR THE SEASON, FROM 9/1/2020 TO 11/30/2020... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1893 TO 2020 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE NORMAL .............................................................. TEMPERATURE (F) RECORD HIGH 99 09/01/1953 09/08/1933 09/07/1933 LOW -7 11/25/1950 HIGHEST 87 09/03 MM MM 90 LOWEST 22 11/14 MM MM 6 AVG. MAXIMUM 63.8 61.3 2.5 61.1 AVG. MINIMUM 43.5 43.2 0.3 43.9 MEAN 53.7 52.3 1.4 DAYS MAX >= 90 0 0.7 -0.7 3 DAYS MAX <= 32 0 1.9 -1.9 3 DAYS MIN <= 32 16 16.6 -0.6 18 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 19.07 2008 MINIMUM 3.23 1956 TOTALS 6.41 10.12 -3.71 13.15 DAILY AVG. 0.07 0.11 -0.04 0.15 DAYS >= .01 31 34.2 -3.2 30 DAYS >= .10 18 19.6 -1.6 22 DAYS >= .50 2 6.3 -4.3 8 DAYS >= 1.00 1 2.0 -1.0 4 GREATEST 24 HR. TOTAL 1.23 SNOWFALL (INCHES) RECORDS TOTAL 30.6 1977 24 HR TOTAL 1.3 11/24 TOTALS 1.3 5.2 -3.9 7.0 SINCE 7/1 1.3 5.2 -3.9 MM SNOWDEPTH AVG. 0 0 DAYS >= TRACE 4 4.2 -0.2 10 DAYS >= 1.0 1 1.8 -0.8 1 GREATEST SNOW DEPTH 0.0 5 24 HR TOTAL 1.3 11/24 TO 11/24 DEGREE DAYS HEATING TOTAL 1075 1252 -177 1271 SINCE 7/1 1076 1269 -193 MM COOLING TOTAL 65 91 -26 160 SINCE 1/1 978 773 205 779 .............................................................. WIND (MPH) AVERAGE WIND SPEED 9.0 HIGHEST WIND SPEED/DIRECTION 38/260 DATE 11/10 HIGHEST GUST SPEED/DIRECTION 53/210 DATE 11/19 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.43 NUMBER OF DAYS FAIR 43 NUMBER OF DAYS PC 24 NUMBER OF DAYS CLOUDY 24 AVERAGE RH (PERCENT) 68 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 10 MIXED PRECIP 0 HEAVY RAIN 8 RAIN 13 LIGHT RAIN 42 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 1 LIGHT SNOW 4 SLEET 0 FOG 32 FOG W/VIS <= 1/4 MILE 3 HAZE 10 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && FALL WILL BE REMEMBERED FOR THE CONTINUED DRY CONDITIONS. PRECIPITATION TOTALED 6.43 INCHES WHICH IS 3.71 INCHES BELOW NORMAL. THIS RANKS AS THE 16TH DRIEST ON RECORD. TO FIND A FALL SEASON THAT WAS DRIER, YOU HAVE TO GO BACK TO 2002 (4.50 INCHES). HOWEVER, 2012 WAS CLOSE WITH 6.68 INCHES, AS WAS 2010 (6.76) AND 2009 (6.96). THE CHANGE IN THE U.S. DROUGHT MONITOR WAS MARGINAL FROM SEPTEMBER 1 TO NOVEMBER 24 ACROSS NORTHERN INDIANA AND SOUTHERN MICHIGAN. THE "MODERATE DROUGHT" CONDITIONS HELD NEARLY STEADY FOR THE NORTHERN TIER COUNTIES OF IN, EXTENDING SOUTHWEST TO WEST-CENTRAL IN. THESE DRY CONDITIONS DID ALLOW FOR A TIMELY HARVEST OF CROPS. DESPITE BOUTS OF MEMORABLE WARMTH, TEMPERATURES FOR THE SEASON WERE GENERALLY NEAR NORMAL. THE MEAN TEMPERATURE OF 53.7 DEGREES IS 1.4 DEGREES ABOVE NORMAL AND RANKS AS THE 40TH WARMEST. SNOW TOTALED ONLY 1.3 INCHES WHICH FELL ON NOVEMBER 24TH. THIS IS 3.9 INCHES BELOW NORMAL. COMPARE THIS TO 7.0 INCHES FROM FALL 2019. A MONTH BY MONTH SUMMARY IS BELOW: SEPTEMBER ...TWO WEEKS WITHOUT MEASUREABLE RAINFALL MARK CONTINUED DROUGHT... THE US DROUGHT MONITOR REMAINED NEARLY STEADY THROUGH THE MONTH WITH ALL OF NORTHERN INDIANA DECLARED TO BE EXPERIENCING AT LEAST "ABNORMALLY DRY CONDITIONS". JUST OUTSIDE OF SOUTH BEND, COMMUNITIES TO THE NORTHEAST AND SOUTHWEST WERE DECLARED TO BE IN A "MODERATE DROUGHT". RAINFALL IS ONLY ONE PIECE OF DROUGHT CONSIDERATIONS. HOWEVER, THIS MONTH WAS CERTAINLY A DRY ONE. RAINFALL FOR THE MONTH TOTALED 1.68". THIS IS 1.85" BELOW NORMAL AND RANKS AS THE 28TH DRIEST ON RECORD. ROUGHLY 73 PERCENT OF THE MONTH`S RAINFALL OCCURRED ON ONE DAY; 1.23" ON THE 8TH. THERE WAS NO MEASUREABLE PRECIPITATION (0.01" OR GREATER) FROM THE 13TH THROUGH 27TH. THIS WAS THE DRIEST SEPTEMBER SINCE 2009 (0.09"). ALSO NOTABLE THIS MONTH WERE THE TEMPERATURE SWINGS. THE DAILY MEAN AVERAGE TEMPERATURE DEPARTURE RANGED FROM 12 DEGREES BELOW NORMAL ON THE 19TH TO 12 DEGREES ABOVE NORMAL ON THE 26TH AND 27TH. A PORTION OF THE AREA OBSERVED ITS FIRST FROST ON THE MORNING OF SEPTEMBER 19TH WHEN A LOW OF 36 DEGREES WAS OBSERVED AT THE AIRPORT (OUTLYING AREAS WERE COLDER, WITH SOME FROST REPORTED VIA SOCIAL MEDIA). ALL TOLD, THE AVERAGE TEMPERATURE FOR THE MONTH WAS 64.3 DEGREES WHICH IS 0.3 DEGREES BELOW NORMAL. THERE WERE NO RECORDS SET AT SOUTH BEND THIS MONTH. OCTOBER ...STRETCH OF WET WEATHER MIDDLE OF MONTH AND COLDER END OF MONTH... OCTOBER BEGAN WITH SOME WELCOME RAIN AND BELOW-NORMAL TEMPERATURES. AS TEMPERATURES WARMED TO ABOVE NORMAL BEGINNING ON THE 6TH, A DRY STRETCH OF WEATHER BEGAN. AS A RESULT, DROUGHT CONDITIONS REMAINED UNCHANGED FOR MUCH OF OCTOBER. THAT IS, SOUTHERN MICHIGAN WAS SAID TO BE "ABNORMALLY DRY" ACCORDING TO THE U.S. DROUGHT MONITOR. MEANWHILE, STEUBEN COUNTY THROUGH WHITE COUNTY WERE LABELED AS "MODERATE DROUGHT". A ROUND OF THUNDERSTORMS ON THE 12TH PRODUCED A 50 MPH WIND GUST AT THE AIRPORT BUT THE RAINFALL OF 0.32 INCHES WAS NOT ENOUGH TO EASE THE DROUGHT CONDITIONS. DROUGHT CONDITIONS IMPROVED SLIGHTLY DURING THE SECOND HALF OF THE MONTH. FROM THE 18TH THROUGH 23RD, 1.23 INCHES OF RAIN WAS OBSERVED. AN ADDITIONAL 0.11 INCHES WAS OBSERVED ON THE 27TH. THIS STRETCH OF WET WEATHER EASED THE DROUGHT FOR PORTIONS OF SOUTHERN MICHIGAN. TEMPERATURES TURNED NOTABLY COOLER FOR THE END OF THE MONTH AS WELL, WITH A BELOW-NORMAL MEAN TEMPERATURE ON 13 OF THE FINAL 17 DAYS. THE HIGH TEMPERATURE OF ONLY 41 DEGREES ON THE 27TH NEARLY BROKE THE PREVIOUS RECORD OF 40 DEGREES SET IN 1925. THE AVERAGE TEMPERATURE FOR THE MONTH WAS 51.1 DEGREES WHICH IS 1.0 DEGREES BELOW NORMAL. THIS RANKS AS TIED FOR THE 32ND COLDEST ON RECORD. TOTAL PRECIPITATION FOR THE MONTH WAS 2.85 INCHES WHICH IS 0.47 INCHES BELOW NORMAL. THIS RANKS AS THE 59TH DRIEST OCTOBER. NO SNOW WAS OBSERVED THIS MONTH. THE NORMAL FOR OCTOBER IS 0.4 INCHES. NOVEMBER ...TOP 10 WARMEST NOVEMBER... NOVEMBER 2020 WILL BE REMEMBERED AS A WARM ONE! THE 4TH THROUGH 10TH FEATURED HIGHS IN THE UPPER-60S AND UPPER-70S, WITH LOWS IN THE 50S. THERE WAS ONE MORE BOUT OF WARMTH ON THE 19TH AND 20TH WITH HIGHS IN THE 60S. TEN DAYS HAD DOUBLE-DIGIT DAILY MEAN TEMPERATURE DEPARTURES ABOVE NORMAL. THE AVERAGE TEMPERATURE WAS 45.7 DEGREES, WHICH IS 5.0 DEGREES ABOVE NORMAL. THIS TIES 2016 AS THE 9TH WARMEST NOVEMBER ON RECORD. A NUMBER OF TEMPERATURE RECORDS WERE BROKEN THIS MONTH: 11/08: H:77. (PREVIOUS 72, 1931) 11/09: H:77. (75, 1999).L:58. (57, 1966) 11/10: H:75. (71, 1999). L:55. (52, 2012) THE RECORD HIGH TEMPERATURE ON NOVEMBER 8TH IS NOTEWORTHY BECAUSE IS IS THE WARMEST TEMPERATURE RECORDED SO LATE IN THE CALENDAR YEAR. THE PREVIOUS RECORD WAS 76 DEGREES SET ON NOVEMBER 19, 1930. PAIRED WITH THE UNSEASONABLE WARMTH WERE DRY CONDITIONS. PRECIPITATION TOTALED 1.88 INCHES WHICH IS 1.39 INCHES BELOW NORMAL. THIS RANKS AS THE 26TH DRIEST NOVEMBER ON RECORD. LAST YEAR, 1.44 INCHES WAS RECORDED. AS A RESULT OF THIS DRYNESS, THE U.S. DROUGHT MONITOR EXPANDED THE "MODERATE DROUGHT" CONDITIONS DURING THE MONTH. THERE WAS ONE INSTANCE OF MEASURABLE SNOW (0.1" OR GREATER) THIS MONTH (11/24). THIS TOTALED 1.3 INCHES AS IS 3.5 INCHES BELOW NORMAL. THIS TIES AS THE 27TH LEAST SNOWIEST NOVEMBER. COMPARE THIS TO 6.8 INCHES IN 2019, AND 12.1 INCHES IN 2018. BROWN $$