Public Information Statement
Issued by NWS Great Falls, MT

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MTZ008>015-044>055-151800-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
1135 AM MST TUE FEB 2 2016

...JANUARY 2016 AND WATER YEAR SEASONAL WEATHER SUMMARY FOR NORTH
CENTRAL AND SOUTHWEST MONTANA...

A LARGE RIDGE OF HIGH PRESSURE TO THE WEST OF MONTANA DURING JANUARY
BROUGHT MOSTLY ABOVE NORMAL TEMPERATURES AND NEAR TO BELOW NORMAL
PRECIPITATION TO THE STATE. SOME SOUTHWEST VALLEYS RECORDED COLDER
THAN NORMAL CONDITIONS AS THE RIDGE CAUSED SEVERAL INVERSIONS DURING
THE MONTH, TRAPPING COLD AIR IN THESE VALLEYS.

THE COOLEST AREAS IN JANUARY WERE OVER NORTH CENTRAL MONTANA AND
IN SOUTHWEST VALLEYS. SIMPSON HAD AN AVERAGE TEMPERATURE OF 15F,
WHILE LAKE VIEW RECORDED AN AVERAGE OF 15.2F. THE COLDEST TEMPERATURE
OF THE MONTH WAS -28F AT WHISKEY CREEK ON THE SECOND. THE WARMEST
AREAS WERE IN CENTRAL MONTANA. STANFORD RECORDED AN AVERAGE
TEMPERATURE OF 28.8F, WHILE THE WARMEST TEMPERATURE OF THE MONTH WAS
62F AT FORT BENTON ON THE 28TH. THE TOWNSEND AREA HAD THE LARGEST
COOL DEPARTURE FROM NORMAL, 2.2F BELOW NORMAL. LEWISTOWN HAD THE
LARGEST WARM DEPARTURE FROM NORMAL, 3.2F.
THE WATER-YEAR-TO-DATE HAS SEEN TEMPERATURES AVERAGE WARMER THAN
NORMAL FOR THIS PERIOD.

PRECIPITATION AMOUNTS WERE VARIABLE, WITH MOST AREAS BELOW NORMAL.
THERE WAS AN AREA OVER NORTH CENTRAL MONTANA WITH ABOVE NORMAL
PRECIPITATION. RAIN FELL OVER CENTRAL MONTANA ON THE 14TH. THE 0.12"
THAT FELL AT GREAT FALLS WAS THE GREATEST AMOUNT ON ONE DAY IN
JANUARY SINCE 2001. SOUTHWEST VALLEYS WERE GENERALLY DRY. DILLON
MEASURED ONLY 0.05" FOR THE MONTH. THE HEAVIEST PRECIPITATION FELL
OVER PORTIONS OF THE SOUTHWEST. HEBGEN DAM MEASURED 1.80-INCHES,
WHILE BLACK BEAR SNOTEL MEASURED 5.30-INCHES.
WITH THE HEAVY PRECIPITATION OF LAST FALL AND EARLY WINTER, THE
WATER-YEAR-TO-DATE IS ON THE WET SIDE. IT REMAINS THE SECOND WETTEST
OF RECORD AT GREAT FALLS.

SNOWFALL WAS GENERALLY BELOW NORMAL. DILLON PICKED UP ONLY A TRACE.
FOR THE WATER-YEAR, HELENA HAS HAD THEIR LEAST SNOWFALL SINCE 2004.

WIND SPEEDS AVERAGED CALMER THAN NORMAL. OF AIRPORT LOCATIONS, CUT
BANK RECORDED THE HIGHEST MONTHLY AVERAGE OF 12.3 MPH. THE HIGHEST
AVERAGE AT OTHER LOCATIONS WAS 22.0 MPH AT DEEP CREEK RAWS /GLACIER
COUNTY/, WHILE THE HIGHEST AVERAGE AT LOWER ELEVATIONS WAS 14.6 MPH
AT TWO MEDICINE. THE HIGHEST WIND GUST FOR THE MONTH WAS 85 MPH AT
DEEP CREEK RAWS ON THE 26TH.
BOZEMAN RANKED 6TH CALMEST WITH AN AVERAGE OF ONLY 3.7 MPH WHILE
HELENA WAS 7TH CALMEST WITH AN AVERAGE OF 4.1 MPH. THIS WAS THE
CALMEST JANUARY AT BOZEMAN SINCE 2010. THIS WATER YEAR IS THE
CALMEST SINCE 2001 AT CUT BANK.

AVERAGE TEMPERATURE...DEGREES FAHRENHEIT...
             JAN   NORM   RANK          OCT-JAN NORM
BOZEMAN......19.3..21.1...40TH COOLEST   29.0...28.3...33RD WARMEST
CUT BANK.....22.6..22.1...42ND WARMEST   30.7...29.4...24TH WARMEST
DILLON.......21.9..22.7...33RD COOLEST   29.9...29.4...27TH COOLEST
GREAT FALLS..27.3..25.2...47TH WARMEST   33.5...32.2...54TH WARMEST
HAVRE........19.7..18.0...47TH WARMEST   30.1...27.9...39TH WARMEST
HELENA.......23.9..23.1...47TH WARMEST   32.5...30.8...41ST WARMEST
LEWISTOWN....26.8..23.6...27TH WARMEST   33.8...30.7...18TH WARMEST
W YELLOWSTON.16.4..12.5...18TH WARMEST   22.6...19.9...33RD WARMEST

PRECIPITATION...INCHES...
              JAN   NORM                OCT-JAN  NORM
BOZEMAN.......0.36..0.51...33RD DRIEST   3.21....2.89...29TH WETTEST
CUT BANK......0.44..0.20...30TH WETTEST  2.36....1.20...17TH WETTEST
DILLON........0.05..0.26...17TH DRIEST   2.13....1.60...14TH WETTEST
GREAT FALLS...0.62..0.51...57TH WETTEST  5.72....2.51... 2ND WETTEST
HAVRE.........0.36..0.33...58TH DRIEST   2.29....1.74...57TH WETTEST
HELENA........0.31..0.36...40TH DRIEST   2.01....1.93...45TH DRIEST
LEWISTOWN.....0.67..0.57...57TH WETTEST  2.86....3.07...43RD DRIEST
W YELLOWSTONE.1.67..1.96...41ST DRIEST   7.31....8.11...48TH WETTEST

SNOWFALL...INCHES...
               JAN  NORM                OCT-JAN  NORM
BOZEMAN MSU... 7.8..12.9...27TH LOWEST   52.3....44.6...26TH HIGHEST
CUT BANK...... 8.1.. 5.2...29TH HIGHEST  31.1....18.2...13TH HIGHEST
DILLON........   T.. 5.0... 2ND LOWEST   16.5....18.0...45TH LOWEST
GREAT FALLS... 6.4.. 8.5...54TH LOWEST   37.8....29.7...28TH HIGHEST
HAVRE......... 5.4.. 6.8...54TH LOWEST   13.8....21.3...33RD LOWEST
HELENA........ 3.7.. 6.2...29TH LOWEST   14.8....20.7... 8TH LOWEST
W YELLOWSTONE.23.3..30.8...42ND LOWEST   91.7....98.5...38TH HIGHEST

AVERAGE WIND SPEED...MPH...
              JAN   NORM   RANK         OCT-JAN  NORM   RANK
BOZEMAN.......3.7....4.6... 6TH CALMEST   4.6.... 4.8... 9TH CALMEST
CUT BANK.....12.3...14.9...16TH CALMEST  12.8....13.9...14TH CALMEST
DILLON....... 9.8...10.2...24TH CALMEST   9.3.... 9.2...24TH CALMEST
GREAT FALLS..12.2...14.5...14TH CALMEST  12.4....13.9...10TH CALMEST
HAVRE........ 9.5...10.5...58TH WINDIEST 10.2....10.2...34TH WINDIEST
HELENA....... 4.1....5.5... 7TH CALMEST   5.2.... 5.7... 6TH CALMEST
LEWISTOWN.... 9.0...10.7 ..14TH CALMEST   9.5....10.2...20TH CALMEST

TEMPERATURE AND PRECIPITATION RECORDS FOR BOZEMAN BEGAN IN
1935, CUT BANK BEGAN IN 1903, DILLON BEGAN IN 1939, GREAT FALLS
BEGAN IN 1891, HAVRE AND HELENA BEGAN IN 1880, LEWISTOWN BEGAN IN
1896, AND WEST YELLOWSTONE BEGAN IN 1905. WIND RECORDS AT BOZEMAN
AND DILLON BEGAN IN 1948, CUT BANK AND LEWISTOWN IN 1938, GREAT
FALLS IN 1939, HAVRE IN 1889, HELENA IN 1880 AND WEST YELLOWSTONE IN
2010. THE NORMAL PERIOD FOR ALL ELEMENTS IS 1981 TO 2010.

THESE DATA ARE PRELIMINARY AND HAVE NOT UNDERGONE FINAL QC BY NCDC.
THEREFORE THESE DATA ARE SUBJECT TO REVISION. FINAL AND CERTIFIED
CLIMATE DATA CAN BE ACCESSED AT THE NATIONAL CLIMATIC DATA CENTER.

$$
&&

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