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

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CXUS53 KOAX 231759
CLMOFK

CLIMATE REPORT
NATIONAL WEATHER SERVICE OMAHA NEBRASKA
247 PM CST FRI JAN 6 2017

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

...THE NORFOLK CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1888 TO 2016

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
HIGHEST            52   12/30
LOWEST            -24   12/18
AVG. MAXIMUM     33.9              34.1    -0.2
AVG. MINIMUM     12.7              14.5    -1.8
MEAN             23.3              24.3    -1.0
DAYS MAX >= 90      0
DAYS MAX <= 32     13
DAYS MIN <= 32     31
DAYS MIN <= 0       4

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.62   2006
 MINIMUM            T   1905
TOTALS           0.84              0.75    0.09
DAILY AVG.       0.03
DAYS >= .01         7
DAYS >= .10         2
DAYS >= .50         1
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.59   12/25 TO 12/25

SNOWFALL (INCHES)
RECORDS
 TOTAL           30.8   2009
TOTALS            3.6               6.0
SINCE 7/1         6.1
SNOWDEPTH AVG.      0                 2      -2
DAYS >= 1.0         2
GREATEST
 SNOW DEPTH         2   12/20
                        12/19
                        12/18
 24 HR TOTAL      2.5   12/16 TO 12/17

DEGREE DAYS
HEATING TOTAL    1285              1261      24
 SINCE 7/1       2330              2706    -376
COOLING TOTAL       0                 0       0
 SINCE 1/1        963               915      48
.................................................

WIND (MPH)
AVERAGE WIND SPEED              11.9
HIGHEST WIND SPEED/DIRECTION    54/210    DATE  12/25
HIGHEST GUST SPEED/DIRECTION    70/180    DATE  12/25

SKY COVER
AVERAGE SKY COVER           0.30


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

-  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 SLIGHTLY COLDER AND SLIGHTLY WETTER THAN
NORMAL...WITH BELOW-NORMAL SNOWFALL...

WITH BOTH WARM AND COLD SPELLS...THE AVERAGE TEMPERATURE FOR
DECEMBER LANDED AT 1.0 DEGREES BELOW NORMAL...WHICH RANKS NEAR THE
MIDDLE OF THE RECORDS. THE TOTAL PRECIPITATION OF 0.84 INCHES WAS
THE 41ST WETTEST...BUT ONLY 3.6 INCHES OF SNOW FELL...WHICH IS 2.4
INCHES BELOW NORMAL.

DECEMBER BEGAN WITH VARIABLE TEMPERATURES AND LIGHT PRECIPITATION IN
NORFOLK. A QUICK LIGHT RAIN TO SNOW MIX FELL ON THE 3RD...THOUGH
HIGH TEMPERATURE RETURNED TO THE 50S BY THE NEXT DAY. THE 6TH MARKED
THE BEGINNING OF A MORE PROLONGED COLD SPELL...WITH TEMPERATURES
ONLY RISING ABOVE FREEZING ON ONE DAY BETWEEN THE 6TH AND THE 19TH.
LOW TEMPERATURES FELL BELOW ZERO ON THE 17TH AND 18TH...AND BOTH
WERE DAILY MINIMUM TEMPERATURE RECORDS. BOTH THE COLDEST LOW AND
HIGH TEMPERATURES OCCURRED ON THE 18TH...WITH A LOW OF -24 AND A
HIGH OF 12 DEGREES. AN INCH OF SNOW FELL ON THE 10TH...WITH A LIGHT
DUSTING OF A TENTH OR TWO AGAIN ON THE 15TH AND 16TH. A LIGHT
DUSTING OF SNOW FELL ON THE 17TH...BEHIND A GLAZE OF FREEZING
DRIZZLE ON THE 16TH. THE SNOWFALL OF 2.3 INCHES ON THE 17TH WAS
ENOUGH TO BE A DAILY RECORD.

TEMPERATURES REBOUNDED ABOVE NORMAL ON THE 20TH AND REMAINED THERE
FOR THE REST OF THE MONTH.  IT WAS A BROWN CHRISTMAS FOR NORFOLK.
INSTEAD...CHRISTMAS DAY SAW A HIGH OF 50 AND A LOW OF 26. THE 0.59
INCHES OF RAIN THAT DAY WAS THE SECOND HIGHEST FOR THE DATE AND THE
HIGHEST ON THE DATE FOR WHICH SNOW WAS NOT RECORDED. EVEN MORE
NOTABLY...THE RAINFALL WAS ACCOMPANIED BY A THUNDERSTORM ON
CHRISTMAS MORNING. TO ADD TO THE INTERESTING CHRISTMAS
WEATHER...WINDS GUSTED TO 70 MPH IN THE EVENING AS WINDS SHIFTED TO
THE NORTHWEST...CAUSING SOME TREE AND MINOR STRUCTURAL DAMAGE. MILD
AND DRY CONDITIONS WERE OBSERVED FOR THE REST OF DECEMBER. THE
WARMEST TEMPERATURE OF THE MONTH...52 DEGREES...OCCURRED ON THE 30TH.


DAILY RECORDS SET IN DECEMBER 2016:
DATE          RECORD           READING  PREVIOUS RECORD
DECEMBER 17   SNOWFALL           2.3    1.5 (1911)
DECEMBER 17   COLD MIN TEMP    -16      -15 (1981)
DECEMBER 18   COLD MIN TEMP    -24      -19 (1983)

$$

MAYES/KLISH



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