Climatological Report (Seasonal)
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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

$$


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