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Accidents and Incidents Report

Helena Climatic Report

CDUS45 KTFX 130929
CLIHLN


CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT                              
227 AM MST WED DEC 13 2017


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

...THE HELENA MT CLIMATE SUMMARY FOR DECEMBER 12 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1866 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         32    801 PM  62    2014  32      0       12       
                                      1921                          
  MINIMUM          8    816 AM -23    1922  12     -4       -1       
                                      1917                          
  AVERAGE         20                        22     -2        6      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          0.60 1937   0.01  -0.01     0.27    
  MONTH TO DATE    0.19                      0.17   0.02     0.46    
  SINCE OCT 1      1.69                      1.34   0.35     2.16    
  SINCE JAN 1      8.88                     10.99  -2.11     9.33    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0           5.8  2016   0.3   -0.3      5.8     
  MONTH TO DATE    2.1                       2.9   -0.8      7.6     
  SINCE DEC 1      2.1                       2.9   -0.8      7.6     
  SINCE JUL 1     10.9                      11.7   -0.8      8.9     
  SNOW DEPTH       1                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       45                        43      2       59       
  MONTH TO DATE  467                       499    -32      567       
  SINCE DEC 1    467                       499    -32      567       
  SINCE JUL 1   2348                      2381    -33     2042       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1    702                       406    296      455       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION    NE (30)       
  HIGHEST GUST SPEED    19   HIGHEST GUST DIRECTION     N (20)       
  AVERAGE WIND SPEED     3.0                                         

                                                                     
SKY COVER                                                            
  AVERAGE SKY COVER 0.2                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  FOG                                                                
  FOG W/VISIBILITY .= 1/4 MILE                                       
  HAZERELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100          1100 AM                                     
 LOWEST     69          1100 PM                                     
 AVERAGE    85                                                       

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

                                                                     
THE HELENA MT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   31        58      1924                    
 MINIMUM TEMPERATURE (F)   12       -22      1919                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 13 2017......SUNRISE   804 AM MST   SUNSET   441 PM MST   
DECEMBER 14 2017......SUNRISE   805 AM MST   SUNSET   441 PM MST   

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




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