Climatological Report (Monthly)
Issued by NWS

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CXUS53 KIWX 011028 CCA
CLMSBN

CLIMATE REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
456 AM EST SUN JAN 1 2017

...................................

...THE SOUTH BEND CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1893 TO 2016

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              70   12/05/2001
                        12/02/1982
 LOW              -18   12/28/1924
HIGHEST            53   12/26        MM      MM       63  12/13
LOWEST            -14   12/19        MM      MM       22  12/20
                                                          12/19
AVG. MAXIMUM     31.3              35.2    -3.9     45.5
AVG. MINIMUM     19.5              22.4    -2.9     33.4
MEAN             25.4              28.8    -3.4
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     14              11.6     2.4        4
DAYS MIN <= 32     28              25.6     2.4       16
DAYS MIN <= 0       3               1.2     1.8        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.50   1965
 MINIMUM         0.60   1943
TOTALS           1.99              2.61   -0.62     4.12
DAILY AVG.       0.06              0.08   -0.02     0.13
DAYS >= .01        18              15.8     2.2       13
DAYS >= .10         5               6.9    -1.9        7
DAYS >= .50         1               1.2    -0.2        3
DAYS >= 1.00        0               0.3    -0.3        1
GREATEST
 24 HR. TOTAL    0.66   12/10 TO 12/11

SNOWFALL (INCHES)
RECORDS
 TOTAL           44.6   2000
TOTALS           23.7              17.3     6.4      1.4
SINCE 7/1        24.2              22.5     1.7     10.5
SNOWDEPTH AVG.      3                 3       0        0
DAYS >= 1.0         8               5.1     2.9        1
GREATEST
 SNOW DEPTH         8R  12/19
 24 HR TOTAL      7.0   12/11 TO 12/11

DEGREE_DAYS
HEATING TOTAL    1221              1122      99      786
 SINCE 7/1       2122              2391    -269     1853
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        950               773     177      784
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              11.1
HIGHEST WIND SPEED/DIRECTION    30/280    DATE  12/14
HIGHEST GUST SPEED/DIRECTION    40/230    DATE  12/20

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            3
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY         18

AVERAGE RH (PERCENT)     81

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       2
LIGHT RAIN                6     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                2     SNOW                       8
LIGHT SNOW               18     SLEET                      0
FOG                      23     FOG W/VIS <= 1/4 MILE      3
HAZE                     11

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

&&

THE FINAL MONTH OF 2016 EXPERIENCED A VARIETY OF WEATHER. DECEMBER
BEGAN WITH NEAR NORMAL TEMPERATURES BUT AN ARCTIC COLD FRONT ARRIVED
LATE IN THE SECOND WEEK AND BROUGHT SOME OF THE COLDEST DECEMBER
TEMPERATURES IN DECADES. THIS ARCTIC COLD AIR ALSO BROUGHT A LENGTHY
PERIOD OF LAKE EFFECT SNOW ALONG WITH SOME SNOW PRODUCED BY PASSING
AREAS OF LOW PRESSURE. THE ARCTIC COLD FINALLY BEGAN TO RETREAT
AFTER THE 20TH AND BY THE DAY AFTER CHRISTMAS...TEMPERATURES BRIEFLY
ROSE INTO THE 50S AHEAD OF A COLD FRONT. THESE MILD TEMPERATURES
HELPED PRODUCE FOG AND DRIZZLE WHICH QUICKLY DEPLETED THE SNOW PACK
THAT WAS IN PLACE. SHOWERS DEVELOPED AHEAD OF THE COLD FRONT ON THE
26TH AND BROUGHT UP TO A QUARTER INCH OF RAIN TO THE SOUTH BEND
AREA. THE MONTH ENDED WITH NEAR NORMAL TEMPERATURES AND SOME
ADDITIONAL LAKE EFFECT SNOW.

THE AVERAGE MONTHLY TEMPERATURE WAS 25.4 DEGREES...3.4 DEGREES BELOW
NORMAL. THIS RANKED AS TIED WITH 1934 FOR THE 29TH COLDEST DECEMBER
ON RECORD DATING BACK TO 1893. THE WARMEST TEMPERATURE WAS 53 ON THE
26TH AND THE COLDEST WAS 14 BELOW ZERO ON THE 19TH. THE 53 WAS THE
16TH WARMEST MAX TEMPERATURE RECORDED. THE WARMEST WAS 70 SET IN
2001. THE 14 BELOW ZERO WAS A RECORD LOW FOR THE 19TH AND ALSO THE
4TH COLDEST DECEMBER TEMPERATURE RECORDED AT SOUTH BEND. THIS WAS
ALSO THE COLDEST DECEMBER TEMPERATURE SINCE 1983 WHEN IT WAS 15 BELOW
ZERO. THE LOWEST RECORDED DECEMBER TEMPERATURE WAS 18 BELOW SET IN
1924.

PRECIPITATION WAS 1.99 INCHES...0.62 INCHES BELOW NORMAL. THIS RANKED
AS THE 47TH DRIEST DECEMBER ON RECORD. MEASURABLE PRECIPITATION FELL
ON 18 DAYS WITH A HALF INCH OR MORE ON ONE DAY.

DESPITE HAVING BELOW NORMAL PRECIPITATION...THE MONTH DID END WITH
ABOVE NORMAL SNOWFALL. THIS WAS PRIMARILY DUE TO THE VERY COLD
TEMPERATURES MID MONTH HELPING LEAD TO LARGER LIQUID TO SNOW RATIOS.
A TOTAL OF 23.7 INCHES OF SNOW WAS RECORDED...6.4 INCHES ABOVE
NORMAL. THIS RANKED AS THE 20TH SNOWIEST DECEMBER ON RECORD. THE
GREATEST SINGLE DAY SNOWFALL WAS 7.0 INCHES ON THE 11TH.

$$


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