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000
CXUS55 KTFX 011639
CLMHVR


CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
712 AM MDT WED MAY 1 2013

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

...THE HAVRE MT CLIMATE SUMMARY FOR THE MONTH OF APRIL 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1880 TO 2013

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              95   04/29/1939
 LOW              -14   04/06/1975
                        04/22/1967
HIGHEST            77   04/27        64      13       89
                        04/26
LOWEST              9   04/09        25     -16       19
AVG. MAXIMUM     53.5              58.0    -4.5     60.5
AVG. MINIMUM     26.7              30.8    -4.1     32.7
MEAN             40.1              44.4    -4.3     46.6
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.6    -0.6        0
DAYS MIN <= 32     21              16.3     4.7       16
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM           MM   MM
 MINIMUM           MM   MM
TOTALS           0.80              0.84   -0.04     1.79
DAYS >= .01        10               7.2     2.8
DAYS >= .10         4               2.3     1.7
DAYS >= .50         0               0.3    -0.3
DAYS >= 1.00        0               0.0     0.0
GREATEST
 24 HR. TOTAL    0.28   04/11 TO 04/12

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   5
 24 HR TOTAL       MM
 SNOW DEPTH         3   04/20/2008
                        04/03/2007
TOTALS            3.6               3.0     0.6        T
SNOWDEPTH AVG.      0
DAYS >= TRACE      11               2.2     8.8
DAYS >= 1.0         2               1.2     0.8
GREATEST
 SNOW DEPTH         1   04/16                         -1
                        04/15
 24 HR TOTAL      2.0   04/14 TO 04/14

DEGREE_DAYS
HEATING TOTAL     739               619     120      545
 SINCE 7/1       7602              7737    -135     6506
COOLING TOTAL       0                 1      -1        0
 SINCE 1/1          0                 1      -1        0
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              11.1
HIGHEST WIND SPEED/DIRECTION    43/300    DATE  04/29
HIGHEST GUST SPEED/DIRECTION    51/300    DATE  04/29

SKY COVER
AVERAGE SKY COVER           0.50

AVERAGE RH (PERCENT)     58

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                9     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       2
LIGHT SNOW               11     SLEET                      0
FOG                      11     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.

&&

SUMMMARY...A STRONGER THAN AVERAGE RIDGE OF HIGH PRESSURE OVER THE EASTERN PACIFIC
OCEAN ESTABLISHED A NORTHWESTERLY FLOW ALOFT OVER WESTERN MONTANA. THIS CONFIGURATION
ALLOWED SEVERAL INTRUSIONS OF COLD CANADIAN AIR MASSES INTO CENTRAL AND EASTERN
MONTANA. AS A RESULT...APRIL 2013 WAS THE 23RD COLDEST ON RECORD. THE MONTHLY TOTAL
PRECIPITATION WAS 0.04 INCHES DRIER THAN AVERAGE...BUT THE MONTHLY SNOWFALL WAS
0.6 INCHES HIGHER THAN AVERAGE DUE TO THE COLDER TEMPERATURES. A NEW DAILY RECORD
LOW TEMPERATURE OF 9 DEGREES WAS ESTABLISHED ON APRIL 9TH.

$$