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000
CXUS53 KDMX 011845
CLMALO

CLIMATE REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
1129 AM CST TUE JAN 1 2013

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

...THE WATERLOO CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2012...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1895 TO 2012

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              67   12/03/2012
                        12/05/2001
                        12/04/1998
 LOW              -29   12/25/2000
                        12/10/1919
HIGHEST            67R  12/03        49      18       52  12/18
LOWEST             -3   12/30       -11       8        4  12/10
                        12/27
AVG. MAXIMUM     35.8              30.8     5.0     38.0
AVG. MINIMUM     17.1              13.5     3.6     21.2
MEAN             26.5              22.2     4.3     29.6
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     13              15.4    -2.4        6
DAYS MIN <= 32     27              29.2    -2.2       26
DAYS MIN <= 0       3               5.7    -2.7        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         3.77   1982
 MINIMUM         0.16   1995
TOTALS           1.74              1.20    0.54     2.38
DAILY AVG.       0.06              0.04    0.02     0.08
DAYS >= .01         8               8.4    -0.4        9
DAYS >= .10         4               3.4     0.6        4
DAYS >= .50         2               0.5     1.5        2
DAYS >= 1.00        0               0.1    -0.1        1

SNOWFALL (INCHES)
RECORDS
 TOTAL           34.0   5
                        0
                        -26215
TOTALS           11.3               9.9     1.4      1.1
SINCE 7/1        11.3              13.3    -2.0      2.6
SNOWDEPTH AVG.      2                 4      -2        0
DAYS >= 1.0         2               3.1    -1.1        0
GREATEST
 SNOW DEPTH         9   12/20                          1  12/22
 24 HR TOTAL     10.0   12/19 TO 12/20

DEGREE_DAYS
HEATING TOTAL    1188              1328    -140     1089
 SINCE 7/1       2676              2811    -135     2478
COOLING TOTAL       0                 0       0        0
 SINCE 1/1       1083               799     284      919
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.9
HIGHEST WIND SPEED/DIRECTION    41/320    DATE  12/20
HIGHEST GUST SPEED/DIRECTION    52/330    DATE  12/20

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           11
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY         10

AVERAGE RH (PERCENT)     79

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                2     FREEZING RAIN              0
LT FREEZING RAIN          1     HAIL                       0
HEAVY SNOW                1     SNOW                       2
LIGHT SNOW                9     SLEET                      0
FOG                      20     FOG W/VIS <= 1/4 MILE      4
HAZE                     11

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

&&

DECEMBER STARTED OUT VERY WARM WITH HIGH TEMPERATURES IN THE 50S AND
60S FOR THE FIRST FOUR DAYS OF THE MONTH. A RECORD DAILY HIGH
TEMPERATURE OF 67 OCCURRED ON DECEMBER 3RD...WHICH ALSO TIES TWO
OTHER YEARS FOR THE HIGHEST TEMPERATURE EVER RECORDED IN THE MONTH
OF DECEMBER IN WATERLOO. TEMPERATURES REMAINED ABOVE NORMAL AND THE WEATHER
WAS QUIET THROUGH THE MIDDLE OF THE MONTH. THIS CAME TO A SUDDEN END
ON DECEMBER 19TH AND 20TH WHEN A POWERFUL BLIZZARD PUMMELED MUCH OF
THE STATE. TEN INCHES OF SNOW FELL IN WATERLOO DURING THIS STORM WITH
WINDS TOPPING OUT AT OVER 50 MPH. THE MONTH ENDED ON A COLD NOTE
WITH TEMPERATURES RUNNING AT OR BELOW NORMAL.

$$