Climatological Report (Monthly)
Issued by NWS Omaha/Valley, NE

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CXUS53 KOAX 030547
CLMOMA

CLIMATE REPORT
NATIONAL WEATHER SERVICE OMAHA NEBRASKA
1135 AM CST MON JAN 1 2018

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

...THE OMAHA EPPLEY, NEBRASKA CLIMATE SUMMARY FOR THE MONTH OF
DECEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
HIGHEST            63   12/04
LOWEST            -14   12/31
AVG. MAXIMUM     37.1              35.3     1.8
AVG. MINIMUM     17.6              16.7     0.9
MEAN             27.4              26.0     1.4
DAYS MAX >= 90      0
DAYS MAX <= 32     11
DAYS MIN <= 32     30
DAYS MIN <= 0       4

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.42   1984
 MINIMUM            T   2002
                        1943
TOTALS           0.42              1.04   -0.62
DAILY AVG.       0.01
DAYS >= .01         6
DAYS >= .10         2
DAYS >= .50         0
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.16   12/24 TO 12/24

SNOWFALL (INCHES)
RECORDS
 TOTAL           24.6   2009
TOTALS            3.6               6.2
SINCE 7/1         3.6
SNOWDEPTH AVG.      1                 3      -2
DAYS >= 1.0         1
GREATEST
 SNOW DEPTH         4   12/31
                        12/30
 24 HR TOTAL      1.3   12/24 TO 12/24

DEGREE DAYS
HEATING TOTAL    1159              1209     -50
 SINCE 7/1       2219              2479    -260
COOLING TOTAL       0                 0       0
 SINCE 1/1       1349              1113     236
.................................................

WIND (MPH)
AVERAGE WIND SPEED              10.7
HIGHEST WIND SPEED/DIRECTION    39/300    DATE  12/04
HIGHEST GUST SPEED/DIRECTION    48/330    DATE  12/13

SKY COVER
AVERAGE SKY COVER           0.60


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                2     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                0     SNOW                       2
LIGHT SNOW               12     SLEET                      1
FOG                       5     FOG W/VIS <= 1/4 MILE      1
HAZE                      3

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.
>= INDICATES GREATER THAN OR EQUAL TO.
<= INDICATES LESS THAN OR EQUAL TO.

&&

...DECEMBER WAS DRIER AND SLIGHTLY WARMER THAN NORMAL IN OMAHA...

WITH A WARM START AND A COLD FINISH, DECEMBER ENDED UP SLIGHTLY
WARMER THAN NORMAL, WITH THE AVERAGE TEMPERATURE OF 27.4 DEGREES
SITTING 1.4 DEGREES ABOVE NORMAL. IT WAS DRIER AND LESS SNOWY THAN
NORMAL, AS WELL, WITH 3.6 INCHES OF SNOW FALLING 2.6 INCHES BELOW
NORMAL AND WITH JUST 0.42 INCHES OF PRECIPITATION.

DECEMBER TRULY WAS THE TALE OF TWO PATTERNS, WITH A WARM BEGINNING
AND MIDDLE BUT A BITTERLY COLD FINISH. THE AVERAGE TEMPERATURE OF
36.4 DEGREES FOR DECEMBER 1-20 WAS THE 15TH WARMEST ON RECORD,
DRIVEN BY MAXIMUM TEMPERATURES THAT WERE THE 6TH WARMEST FOR THE
SAME DATES. JUST 0.01 INCHES OF PRECIPITATATION FELL IN THAT PERIOD,
ON THE 6TH, WITH 0.1 INCH OF SNOW MARKING THE FIRST MEASURABLE
SNOWFALL OF THE YEAR. THE WARMEST TEMPERATURE OF THE MONTH WAS 63
DEGREES ON THE 4TH, ACCOMPANIED BY 48 MPH WIND GUSTS. THE 13TH WAS
ANOTHER BREEZY DAY, ALSO REACHING 48 MPH WIND GUSTS.

THE PATTERN CHANGE BEGAN WITH THE WINTER SOLSTICE, ON THE 21ST, WITH
0.14 INCHES OF PRECIPITATION FALLING AS BOTH LIGHT FREEZING RAIN AND
0.4 INCHES OF SNOW. IT ALSO WAS THE LAST DAY OF THE MONTH THAT ROSE
ABOVE FREEZING, AS TEMPERATURES NEVER ROSE ABOVE THE 28 DEGREES
RECORDED AS A HIGH ON THE 22ND THROUGH THE REST OF DECEMBER. SNOW
FELL AGAIN ON THE 23RD AND 24TH, TOTALING 1.7 INCHES AND ASSURING A
WHITE CHRISTMAS. PARTICULARLY COLD TEMPERATURES ARRIVED ON THE 26TH,
WITH A HIGH OF JUST 6 DEGREES, AND THE LOW ON THE 27TH FELL TO -9
DEGREES, WITH ANOTHER 0.6 INCHES OF SNOW. FLURRIES WERE RECORDED ON
JUST ABOUT EVERY DAY TO END THE MONTH, WITH A MEASURABLE 0.1 INCHES
OF SNOW ON THE 30TH. THE BITTEREST COLD ARRIVED ON NEW YEARS EVE,
WITH A HIGH OF ONLY -1 DEGREES MARKING THE FIRST TIME SINCE JANUARY
10, 1997, THAT THE MAXIMUM TEMPERATURE STAYED BELOW ZERO. THE LATE
EVENING LOW OF -14 ON THE 31ST WAS A RECORD FOR THE DATE AND THE
COLDEST NOT ONLY OF DECEMBER BUT FOR ALL OF 2017. THE AVERAGE
TEMPERATURE OF 4.4 DEGREES FOR DECEMBER 25-31 WAS THE 3RD COLDEST ON
RECORD FOR THAT LAST WEEK OF THE YEAR, NOT QUITE REACHING THE 2.1
DEGREES IN 1880 HOLDING THE RECORD.


DAILY RECORDS SET IN DECEMBER 2017:
DATE          RECORD           READING  PREVIOUS RECORD
DECEMBER 31   COLD MIN TEMP    -14      -12 (1884)

$$

MAYES



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