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Climatological Report (Annual)
Issued by NWS Omaha/Valley, NE
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000
CXUS53 KOAX 090552
CLAOMA

CLIMATE REPORT
NATIONAL WEATHER SERVICE OMAHA NEBRASKA
1033 PM CST TUE JAN 2 2018

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

...THE OMAHA EPPLEY, NEBRASKA CLIMATE SUMMARY FOR THE YEAR OF 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2018

WEATHER         OBSERVED          DEPART
                 VALUE   DATE(S)  FROM
                                  NORMAL
........................................
TEMPERATURE (F)
HIGHEST           103   07/21
LOWEST            -14   12/31
AVG. MAXIMUM     64.8
AVG. MINIMUM     43.3
MEAN             54.0               2.9
DAYS MAX >= 90     41
DAYS MAX <= 32     26
DAYS MIN <= 32    121
DAYS MIN <= 0       5

PRECIPITATION (INCHES)
TOTALS          26.40
DAYS >= .01        96
DAYS >= .10        55
DAYS >= .50        22
DAYS >= 1.00        7
GREATEST
 24 HR. TOTAL    1.44   MM

SNOWFALL (INCHES)
TOTALS           11.8
DAYS >= TRACE      39
DAYS >= 1.0         4
GREATEST
 SNOW DEPTH         4   12/31
                        12/30
 24 HR TOTAL      2.8   MM

DEGREE_DAYS
HEATING TOTAL    5233
COOLING TOTAL    1349
.........................................

WIND (MPH)
HIGHEST WIND SPEED/DIRECTION    51/270    DATE  06/16
HIGHEST GUST SPEED/DIRECTION    63/270    DATE  05/16



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

&&

...2017 YEARLY CLIMATE SUMMARY FOR OMAHA...

THE YEAR 2017 WAS MUCH WARMER AND SLIGHTLY DRIER THAN NORMAL, WITH
BELOW-NORMAL SNOWFALL. THE AVERAGE TEMPERATURE OF 54.0 DEGREES WAS
THE 6TH WARMEST ON RECORD AND 3.0 DEGREES ABOVE NORMAL. THE TOTAL
PRECIPITATION OF 26.40 INCHES WAS 4.22 INCHES BELOW NORMAL AND THE
53RD DRIEST ON RECORD. THE CALENDAR YEAR SNOWFALL TOTAL OF 11.8
INCHES WAS 14.6 INCHES BELOW NORMAL AND THE 5TH LEAST SNOWY CALENDAR
YEAR ON RECORD. ALL MONTHS IN 2017 EXCEPT AUGUST WERE WARMER THAN
NORMAL, AND AUGUST WAS THE FIRST MONTH AVERAGING COOLER THAN NORMAL
IN OMAHA SINCE AUGUST OF 2015.

JANUARY WAS THE 31ST WARMEST ON RECORD, WITH SLIGHTLY ABOVE-NORMAL
PRECIPITATION AND BELOW-NORMAL SNOWFALL. ONE OF THE HIGHEST-IMPACT
WEATHER EVENTS OF 2018 WAS THE ICE/WINTER STORM ON JANUARY 15-16
(MARTIN LUTHER KING JR. HOLIDAY WEEKEND), WITH ICE ACCUMULATIONS OF
AROUND A TENTH TO A QUARTER OF AN INCH AROUND THE OMAHA METRO AREA.
BECAUSE OF WARM TEMPERATURES IN JANUARY, PRECIPITATION FELL AS RAIN
SEVERAL TIMES DURING THE MONTH, BUT A 2.0-INCH SNOWFALL ON THE 25TH
AND 26TH CONTRIBUTED TO THE MEAGER SNOW TOTALS.

FEBRUARY WAS THE 4TH WARMEST ON RECORD, WITH AN AVERAGE TEMPERATURE
THAT WAS 9.6 DEGREES ABOVE NORMAL. FEBRUARY 2017 SAW THE HIGHEST
NUMBER OF FEBRUARY DAYS WITH TEMPERATURES OF 60 DEGREES OR WARMER (8
DAYS) AND 70 DEGREES OR WARMER (4 DAYS), ALONG WITH THE HIGHEST
NUMBER OF CONSECUTIVE DAYS IN FEBRUARY ABOVE 50 DEGREES (13 DAYS)
AND THE 2ND HIGHEST NUMBER OF DAYS READING 50 DEGREES OR HIGHER (15
DAYS; RECORD IS 17, SET IN 1976). SEVERAL WARM TEMPERATURE RECORDS
WERE SET IN THE MIDDLE OF THE MONTH. PRECIPITATION AND SNOWFALL WERE
NEAR NORMAL. SNOW ARRIVED IN TWO BATCHES, WITH THE FIRST BATCH ON
THE 8TH BRINGING 2.8 INCHES. A THUNDERSTORM BROUGHT HAIL, RAIN, AND
SLEET ON THE 23RD, FOLLOWED BY 2.4 INCHES OF SNOW ON THE 23RD TO
24TH.

FOR THE WINTER MONTHS OF DECEMBER 2016 THROUGH FEBRUARY 2017, THE
AVERAGE TEMPERATURE OF 30.8 DEGREES WAS 4.9 DEGREES ABOVE NORMAL AND
THE 14TH WARMEST WINTER ON RECORD. THE TOTAL PRECIPITATION WAS 3.37
INCHES, WHICH WAS 0.76 INCHES ABOVE NORMAL AND THE 29TH WETTEST ON
RECORD. THE SNOWFALL FOR JUST DECEMBER THROUGH FEBRUARY WAS 11.1
INCHES, WHICH WAS 7.3 INCHES BELOW NORMAL. THE TOTAL WINTER 2016-
2017 SNOWFALL OF 11.4 INCHES WAS 15.0 INCHES BELOW NORMAL AND THE
3RD LOWEST WINTER SNOWFALL TOTAL ON RECORD (FOR WINTERS WITHOUT
MISSING DATA). THE ACCUMULATED WINTER SEASON SEVERITY INDEX (AWSSI)
FOR OMAHA WAS THE RECORD MILDEST (FROM 1950-51 TO PRESENT).

MARCH WAS THE 24TH WARMEST ON RECORD IN OMAHA, WITH SLIGHTLY ABOVE-
NORMAL PRECIPITATION AND WITH BELOW-NORMAL SNOWFALL. GUSTY WINDS
BROUGHT RECORD WARM TEMPERATURES AND THUNDERSTORMS ON THE 6TH, WHILE
THE LAST MEASURABLE SNOW OF THE WINTER FELL ON THE 13TH, MEASURING
0.3 INCHES, ALONG WITH THE LAST SUBFREEZING HIGH TEMPERATURE OF
WINTER. THE LAST HARD FREEZE OF THE COLD SEASON OCCURRED ON THE
18TH, AT 27 DEGREES. MARCH ENDED WITH A LONG STREAK OF OVERCAST OR
NEARLY OVERCAST SKIES AND SEVERAL RAINY DAYS, INCLUDING A DAILY
RECORD 1.21 INCHES ON THE 29TH.

APRIL WAS THE 34TH WARMEST ON RECORD, WITH PRECIPITATION HOVERING
JUST BELOW NORMAL. OVERCAST CONDITIONS FROM MARCH CONTINED INTO
EARLY APRIL, WITH THE FIRST SUNSHINE ON THE 6TH AND WITH CONDITIONS
MORE CLOUDY THAN SUNNY THROUGH MOST OF THE MONTH. THE LAST FREEZE OF
THE COLD SEASON OCCURRED ON THE 11TH, AT 30 DEGREES. WITH WARMING
WEATHER, SEVERAL DAYS OF THUNDERSTORMS WERE RECORDED. STORMS IN THE
NORTHERN METRO AREA ON THE MORNING OF THE 19TH WERE ON THE STRONG
SIDE, BUT OTHERWISE, OMAHA REMAINED OUTSIDE OF AREAS AFFECTED BY
SEVERE WEATHER AND HIGHER RAINFALL TOTALS. THE MONTH ENDED COOL AND
WET, AND THUNDERSTORMS ON THE 30TH BROUGHT SMALL HAIL (PEA SIZE OR
LESS), AS WELL.

MAY WAS SLIGHTLY WARMER THAN NORMAL, WITH NEAR-NORMAL PRECIPITATION.
COOLER WEATHER FROM THE END OF APRIL CONTINUED INTO EARLY MAY,
FOLLOWED BY A SLOW MODERATING TREND, WITH TEMPERATURES RECOVERING TO
THE WARMEST READINGS OF THE MONTH ON THE 8TH (AND AGAIN ON THE 16TH)
AT 93 DEGREES AS ABOVE-NORMAL TEMPERATURES CONTINUED THROUGH THE
17TH. SEVERE THUNDERSTORMS IN THE OMAHA METRO AREA ON THE 16TH
BROUGHT SMALL HAIL, 63-MPH WINDS, 1.35 INCHES OF RAIN, AND THE
BEGINNING OF A WETTER AND COOLER PERIOD. RAIN FROM THE 16TH THROUGH
THE 20TH TOTALED 3.47 INCHES, WITH THUNDER ON ALL BUT ONE OF THOSE
DAYS.

FOR THE SPRING MONTHS OF MARCH THROUGH MAY, THE AVERAGE TEMPERATURE
OF 53.6 DEGREES WAS 2.4 DEGREES ABOVE NORMAL AND THE 21ST WARMEST ON
RECORD. THE TOTAL PRECIPITATION OF 9.41 INCHES WAS 0.30 INCHES BELOW
NORMAL AND RANKED IN THE MIDDLE OF THE PACK. JUST 0.3 INCHES OF SNOW
FELL DURING THE SPRING MONTHS, WHICH WAS THE 11TH LOWEST TOTAL SINCE
SNOW RECORD BEGAN IN 1885.

JUNE WAS THE 18TH WARMEST ON RECORD, DESPITE NO PARTICULAR DAYS WITH
EXCEPTIONAL HEAT, WITH BELOW-NORMAL PRECIPITATION. ONE OF THE
BIGGEST EVENTS OF THE YEAR WAS THE OUTBREAK OF THUNDERSTORMS ON THE
16TH, WHICH BROUGHT SEVERE WEATHER TO THE OMAHA METRO AREA. EPPLEY
AIRFIELD ITSELF RECORDED A WIND GUST OF 60 MPH, BUT WINDS WERE MUCH
STRONGER FROM WESTERN DOUGLAS COUNTY (88 MPH WIND GUST IN VALLEY)
TOWARD PLATTSMOUTH AND BELLEVUE, WHERE TWO TORNADOES OCCURRED IN THE
MIDST OF A LARGE SWATH OF STRAIGHT-LINE WIND DAMAGE. THUNDERSTORMS
ON THE 29TH ALSO BROUGHT SMALL HAIL AT EPPLEY BUT 2 TO 4 INCH HAIL
ELSEWHERE IN THE OMAHA METRO AREA. OTHERWISE, WARM AND DRY
CONDITIONS DOMINATED THE 1ST THROUGH 11TH, FOLLOWED BY A STORMY
PERIOD FROM THE 12TH TO THE 17TH AND A BIT MORE OF TEMPERATURE AND
PRECIPITATION SWINGS LATER IN THE MONTH.

JULY WAS THE 20TH WARMEST AND 25TH DRIEST ON RECORD. AFTER A 4-YEAR
HIATUS, THE TEMPERATURE IN OMAHA FINALLY TOPPED 100 ON THE 21ST,
REACHING A HIGH OF 103 DEGREES. THE LOWEST HIGH TEMPERATURE OF THE
MONTH WAS 83 DEGREES, WHICH IS THE 6TH WARMEST ON RECORD FOR JULY.
SEVERAL DAYS OF THUNDERSTORMS AND MEASURABLE RAIN WERE NOTED, BUT
INDIVIDUAL DAILY AMOUNTS WERE NOT VERY HIGH ON MOST DAYS.

AUGUST WAS THE 31ST COOLEST ON RECORD, WITH SLIGHTLY BELOW-NORMAL
PRECIPITATION. IT WAS THE FIRST MONTH THAT WAS COOLER THAN NORMAL
SINCE AUGUST 2015. THE WARMEST TEMPERATURE OF THE MONTH, AT 90
DEGREES, OCCURRED RIGHT AWAY ON THE 1ST AND WAS THE 5TH COOLEST
WARMEST TEMPERATURE OF AUGUST ON RECORD. THE WETTEST PERIOD OF THE
MONTH OCCURRED IN THE MIDDLE OF THE MONTH, WITH SEVERAL DAYS OF
RAIN/THUNDERSTORMS, AND AUGUST ENDED ON THE DRY SIDE, WITH ONLY ONE
DAY RECORDING PRECIPITATION FROM THE 22ND ONWARD.

FOR THE SUMMER MONTHS OF JUNE THROUGH AUGUST, THE AVERAGE
TEMPERATURE OF 76.1 DEGREES WAS 1.6 DEGREES ABOVE NORMAL AND THE
42ND WARMEST ON RECORD. THE TOTAL PRECIPITATION OF 7.66 INCHES WAS
4.17 INCHES BELOW NORMAL AND THE 30TH DRIEST SUMMER ON RECORD.

SEPTEMBER TEMPERATURES BOUNCED BACK TO WELL ABOVE NORMAL, AS THE
16TH WARMEST SEPTEMBER ON RECORD, WITH NEAR-NORMAL RAINFALL. NO RAIN
FELL UNTIL THE 16TH, AND ALL OF THE MONTH`S RAIN FELL ON FIVE DAYS
FROM THE 16TH TO THE 26TH. WARM TEMPERATURES WERE NOTED FROM THE 8TH
TO 25TH, WITH ESPECIALLY WARM WEATHER FROM THE 19TH TO 24TH THAT
INCLUDED RECORD WARM MINIMUM TEMPERATURES ON THE 22ND AND 23RD. THE
LOWEST TEMPERATURES OF THE MONTH WERE 47 DEGREES ON THE 28TH AND
29TH, MARKING THE 5TH WARMEST MONTHLY MINIMUM TEMPERATURES IN
SEPTEMBER ON RECORD.

OCTOBER WAS WETTER AND WARMER THAN NORMAL, RANKING AS THE 19TH
WETTEST AND 54TH WARMEST. IT ALSO RECORDED A TRACE OF SNOW, ONE OF
34 YEARS TO RECORD AT LEAST A TRACE OF SNOW IN OCTOBER AMONG YEARS
WITH COMPLETE RECORDS. THE FIRST HALF OF OCTOBER WAS VERY WET AND
MOSTLY WARM, WITH 9 RAINY DAYS OUT OF THE FIRST 14 AND WITH MOST
DAYS RECORDING ABOVE-NORMAL TEMPERATURES. A NEEDED DRY PERIOD
ARRIVED IN THE SECOND HALF OF THE MONTH, BUT WITH IT CAME WINDY DAYS
ON THE 20TH (43 MPH), 23RD (47 MPH), 26TH (50 MPH), AND 27TH (43
MPH). MUCH COOLER WEATHER ARRIVED AS TEMPERATURES FELL THROUGH THE
26TH TO 27TH, WITH THE FIRST FREEZE ON THE 27TH ALSO ARRIVING AS THE
FIRST HARD FREEZE. COOL TEMPERATURES WERE NOTED ON THE 30TH (WITH
BRISK 45-MPH WINDS) AND ESPECIALLY THE 31ST. OMAHA AREA TRICK-OR-
TREATERS WERE GREETED WITH PERSISTENT SNOW FLURRIES IN THE EVENIGN
OF THE 31ST, WITH A LOW OF 23 IN THE MORNING AND A HIGH OF JUST 38
IN THE AFTERNOON.

NOVEMBER WAS THE 39TH DRIEST ON RECORD AND THE 51ST WARMEST. NO SNOW
WAS REPORTED IN NOVEMBER, WHICH HAS OCCURRED 9 OTHER TIMES FOR YEARS
WITH COMPLETE RECORDS SINCE SNOW RECORDS BEGAN IN 1884. FROM THE 1ST
THROUGH 13TH, TEMPERATURES WERE BELOW NORMAL ON MOST DAYS, WITH
MEASURABLE RAIN ONLY ON THE 12TH AND 13TH. FROM THE 14TH TO THE
30TH, ALL BUT THREE DAYS HAD ABOVE-NORMAL TEMPERATURES. A COLD FRONT
ON THE 17TH TO 18TH BROUGHT 0.23 INCHES OF RAIN, THE LAST MEASURABLE
RAIN OF THE MONTH. TEMPERATURES WERE WARM AROUND THANKSGIVING,
REACHING 72 DEGREES ON THE 24TH AND TYING A DAILY RECORD ON THE
27TH.

FOR THE FALL MONTHS OF SEPTEMBER THROUGH NOVEMBER, THE AVERAGE
TEMPERATURE OF 55.5 DEGREES WAS 2.9 DEGREES ABOVE NORMAL AND THE
28TH WARMEST ON RECORD. THE TOTAL PRECIPITATION OF 7.01 INCHES WAS
0.54 INCHES ABOVE NORMAL AND 54TH WETTEST ON RECORD, AS A VERY DRY
NOVEMBER FOLLOWED A WET SEPTEMBER AND OCTOBER. ONLY A TRACE OF SNOW
WAS RECORDED, THOUGH IT IS NOT UNUSUAL FOR A TRACE OR LESS OF SNOW
TO OCCUR IN THE FALL.

DECEMBER WAS THE 43RD DRIEST, WITH AN AVERAGE TEMPERATURE THAT WAS
SLIGHTLY ABOVE NORMAL AND RANKED NEAR THE MIDDLE OF THE PACK. IT
TRULY WAS THE TALE OF TWO PATTERNS, WITH A WARM BEGINNING AND MIDDLE
BUT A BITTERLY COLD FINISH. THE AVERAGE TEMPERATURE OF 35.4 DEGREES
FOR DECEMBER 1-20 WAS THE 16TH WARMEST ON RECORD, DRIVEN BY MAXIMUM
TEMPERATURES THAT WERE 6TH WARMEST FOR THE SAME DATES. JUST 0.01
INCHES OF PRECIPITATION FELL IN THAT PERIOD, WITH 0.1 INCHES OF SNOW
ON THE 6TH MARKING THE FIRST MEASURABLE SNOWFALL OF THE YEAR. THE
PATTERN CHANGE BEGAN ON THE 21ST, WITH FREEZING RAIN AND SNOW, AND
IT WAS THE LAST DAY OF THE MONTH THAT ROSE ABOVE FREEZING. THE 1.7
INCHES OF SNOW ON THE 23RD-24TH ENSURED A WHITE CHRISTMAS, WITH
FLURRIES OR LIGHT SNOW ON MOST DAYS THROUGH THE END OF THE MONTH.
THE BITTEREST COLD ARRIVED ON NEW YEARS EVE, WITH A HIGH OF ONLY -1
DEGREES MARKING THE FIRST TIME SINCE 1/10/1997 THAT THE MAXIMUM
TEMPERATURE STAYED BELOW ZERO. THE LATE EVNEING LOW OF -14 ON THE
31ST WAS A RECORD FOR THE DATE AND THE COLDEST OF THE YEAR. THE
AVERAGE TEMPERATURE OF 4.4 DEGREES FOR DECEMBER 25-31 WAS THE 3RD
COLDEST ON RECORD FOR THAT LAST WEEK OF THE YEAR.


                       2017 STATISTICS
          TEMPERATURE                   PRECIPITATION
MONTH  AVG. DEPART.  MAX  MIN     TOTAL  DEPART. SNOW/SLEET TSTORM DAYS
JAN    27.7   4.2     56   -3     0.86    0.14    2.7         0
FEB    37.7   9.6     75    6     1.04    0.19    5.2         1
MAR    43.3   3.8     82   17     2.39    0.40    0.3         2
APR    54.4   2.6     82   30     2.42   -0.54      0         7
MAY    63.1   0.8     93   37     4.60   -0.16      0         8
JUN    75.7   3.6     97   52     3.14   -1.04      0        12
JUL    80.1   3.4    103   60     1.23   -2.60      0         8
AUG    72.5  -2.1     90   52     3.29   -0.53      0         7
SEP    70.6   4.9     96   47     2.59   -0.09      0         6
OCT    55.3   2.1     84   20     4.06    1.91      T         8
NOV    40.7   1.8     72   15     0.36   -1.28      0         0
DEC    27.4   1.4     63  -14     0.42   -0.62    3.6         0
YEAR   54.0   3.0    103  -14    26.40   -4.22   11.8        59

           DEGREE DAYS
MONTH  HEATING  DEPART.  COOLING  DEPART.
JAN      1147    -139         0       0
FEB       756    -277         0       0
MAR       663    -128         1      -1
APR       318     -95         8      -7
MAY       130     -18        77      11
JUN         0     -17       327      97
JUL         0      -1       476     111
AUG         0      -7       241     -62
SEP        27     -68       203      86
OCT       310     -72        17       2
NOV       723     -62         0      -1
DEC      1159     -50         0       0
YEAR     5233    -934      1349     236

       WIND GUST    SEA LEVEL PRESSURE
MONTH  MAX          MAX     MIN
JAN    44           30.78   29.35
FEB    40           30.66   29.49
MAR    53           30.69   29.14
APR    47           30.38   29.41
MAY    63           30.13   29.24
JUN    60           30.31   29.47
JUL    44           30.20   29.65
AUG    40           30.22   29.68
SEP    39           30.31   29.54
OCT    50           30.44   29.44
NOV    45           30.53   29.46
DEC    48           30.98   29.37
YEAR   63           30.98   29.14

       EXTREMES                    READING   DATE
WARMEST HIGH TEMPERATURE           103       JULY 21
COLDEST HIGH TEMPERATURE            -1       DECEMBER 31
COLDEST LOW TEMPERATURE            -14       DECEMBER 31
WARMEST LOW TEMPERATURE             82       JULY 21
LAST SPRING FREEZE (32 DEGREES)     30       APRIL 11
FIRST FALL FREEZE (32 DEGREES)      27       OCTOBER 27
HIGHEST DAILY PRECIPITATION          1.35    MAY 16
HIGHEST DAILY SNOWFALL               2.8     FEBRUARY 8
HIGHEST SNOW DEPTH                   4       DECEMBER 30-31
LAST MEASURABLE SNOW (2016-17)       0.3     MARCH 13
FIRST MEASURABLE SNOW (2017-18)      0.1     DECEMBER 6
HIGHEST WIND GUST                   63       MAY 16
HIGHEST SURFACE PRESSURE            30.98    DECEMBER 31
LOWEST SURFACE PRESSURE             29.14    MARCH 6

   DAILY RECORDS SET IN 2017
DATE          RECORD         READING   PREVIOUS RECORD
FEBRUARY 16   WARM MAX TEMP   67       66 (1981)
FEBRUARY 17   WARM MAX TEMP   75       69 (1981)
FEBRUARY 19   WARM MAX TEMP   71       70 (1930)
FEBRUARY 21   WARM MAX TEMP   72       72 (TIES WITH 1977)
FEBRUARY 22   WARM MAX TEMP   75       71 (1982)
MARCH 6       WARM MAX TEMP   78       77 (1972)
MARCH 29      PRECIPITATION    1.21    0.84 (1976)
SEPTEMBER 22  WARM MIN TEMP   77       73 (2016)
SEPTEMBER 23  WARM MIN TEMP   72       72 (TIES WITH 1892)
NOVEMBER 27   WARM MAX TEMP   67       67 (TIES WITH 1998)
DECEMBER 31   COLD MIN TEMP  -14       -12 (1884)

   MONTHLY RECORDS SET IN 2017
DATE         RECORD                 READING   PREVIOUS RECORD
NONE

$$

MAYES
National Weather Service Weather Forecast Office
