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CXUS55 KTFX 071519
CLAGTF
MTZ008>015-044>055-151800-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
819 AM MST TUE JAN 7 2013

THIS DATA IS PRELIMINARY UNTIL CERTIFIED BY NATIONAL CLIMATIC DATA
CENTER.

...2013 WEATHER SUMMARY FOR NORTH CENTRAL AND SOUTHWEST MONTANA...

AVERAGE TEMPERATURE / NORMAL/ DEPARTURE FROM NORMAL
 GREAT FALLS....45.8 / 44.6... +1.2...49TH COOLEST YEAR OF RECORD.
 HAVRE..........43.4 / 43.5... -0.1...56TH COOLEST YEAR OF RECORD.
 HELENA.........46.3 / 45.3... +0.9...13TH WARMEST YEAR OF RECORD.
 BOZEMAN........43.8 / 45.2...  0.0...31ST WARMEST YEAR OF RECORD.
 CUT BANK.......42.7 / 42.1... +0.6...26TH WARMEST YEAR OF RECORD.
 DILLON.........43.6 / 42.8... +0.8...22ND WARMEST YEAR OF RECORD.
 LEWISTOWN......42.8 / 43.1... -0.3...53RD WARMEST YEAR OF RECORD.
 W YELLOWSTONE..34.3 / 34.4... -0.1...25TH COOLEST YEAR OF RECORD.

HIGHEST / LOWEST TEMPERATURES
 GREAT FALLS....101 ON 08/16          /  -33 ON 12/07
 HAVRE.......... 99 ON 09/02          /  -39 ON 12/07
 HELENA.........100 ON 07/02          /  -17 ON 12/07
 BOZEMAN........ 97 ON 08/16          /  -29 ON 12/08
 CUT BANK....... 97 ON 07/02          /  -35 ON 12/07
 DILLON......... 94 ON 07/02 08/16    /  -24 ON 12/08
 LEWISTOWN...... 95 ON 09/02          /  -29 ON 12/07
 W YELLOWSTONE.. 90 ON 07/02 08/17    /  -39 ON 01/12

     PRECIPITATION / NORMAL / DEPARTURE FROM NORMAL / MOST IN 24 HRS
 GREAT FALLS....11.78 / 14.75 /    -2.97 /    1.33 ON 06/02-03
 HAVRE..........19.16 / 11.20 /    +7.96 /    1.96 ON 05/30-31
 HELENA.........10.58 / 11.22 /    -0.64 /    0.98 ON 08/01-02
 BOZEMAN........11.82 / 14.10 /    -2.28 /    1.15 ON 06/13-14
 CUT BANK.......14.68 / 10.85 /    +3.83 /    1.84 ON 09/06-07
 DILLON.........10.04 / 10.50 /    -0.46 /    0.70 ON 05/17
 LEWISTOWN......22.19 / 16.85 /    +5.34 /    1.86 ON 05/30-31
 W YELLOWSTONE..17.64 / 21.09 /    -3.45 /    0.95 ON 09/17

SOME TEMPERATURE AND PRECIPITATION HIGHLIGHTS AND RANKING...
BOZEMAN...  2013 WAS THE 15TH DRIEST OF RECORD, BUT THE WETTEST SINCE
            2010.
    AT BOZEMAN MSU, THIS WAS THE LOWEST ANNUAL SNOWFALL SINCE
            2004, AND RANKED 13TH LOWEST OF RECORD.
CUT BANK... THIS WAS THE WETTEST YEAR SINCE 2008, AND THE 16TH WETTEST
            OF RECORD.
DILLON...   2013 WAS THE WETTEST YEAR SINCE 2010, AND THE 36TH WETTEST
            OF RECORD.
    THERE WERE 33 DAYS ON WHICH HIGH TEMPERATURES WERE 32F OR
    COLDER. THIS WAS THE LOWEST NUMBER SINCE 2006.
GREAT FALLS...2013 WAS THE 25TH DRIEST YEAR OF RECORD, AND THE DRIEST
              SINCE 2003. FOR SNOWFALL, THIS WAS THE 24TH SNOWIEST
      YEAR OF RECORD.
      THERE WERE 37 DAYS WITH HIGH TEMPERATURES OF 90 OR
      HIGHER. THIS WAS THE GREATEST NUMBER IN A YEAR SINCE
      2003.
HAVRE.....THIS WAS THE THIRD WETTEST YEAR OF RECORD, AND THE WETTEST
          IN NEARLY 100 YEARS, SINCE 1916. THIS WAS THE SNOWIEST
          CALENDAR YEAR SINCE 2010, AND THE 22ND SNOWIEST OF RECORD.
HELENA....2013 WAS THE 52ND DRIEST YEAR OF RECORD. FOR SNOWFALL,
          THIS WAS THE LEAST SNOWY SINCE 2007, AND RANKED AS THE
  FOURTH LOWEST CALENDAR YEAR AMOUNT OF RECORD.
  THERE WERE ONLY 32 DAYS ON WHICH THE HIGH TEMPERATURE WAS
  32F OF COLDER. THIS WAS THE LOWEST NUMBER IN A YEAR SINCE
  2006.
LEWISTOWN..RANKING 15TH WETTEST, THIS WAS THE WETTEST YEAR SINCE
           1995.
WEST YELLOWSTONE...THIS WAS THE DRIEST YEAR SINCE 2007, AND RANKED
                   30TH DRIEST OF RECORD. THIS YEAR HAD THE LOWEST
                   SNOWFALL SINCE 1935, AND RANKED FIFTH LOWEST OF
                   RECORD.

SNOWFALL / DEPARTURE FROM NORMAL / MOST IN 24 HRS / MAX SNOW ON GRD
 GREAT FALLS.. 66.8 / +3.6 /  5.9 ON 01/10   /  6 INCHES ON 01/14-14
 HAVRE.........52.1 / +0.9 / 10.2 ON 01/10   / 13 INCHES ON 01/11-14
 HELENA........20.3 /-17.8 /  4.8 ON 01/10   /  4 INCHES ON 02/14
 CUT BANK......               6.0 ON 11/10   /  6 INCHES ON 11/11
 DILLON........               2.0 ON 01/11   /  5 INCHES ON 01/14-16
 LEWISTOWN.....              12.0 ON 01/30   / 13 INCHES ON 01/31
 BOZEMAN MSU.. 57.6 /-33.4 / 13.0 ON 03/19   /  9 INCHES ON 02/23-25
 W YELLOWSTON. 91.4 /-69.2 /  8.3 ON 03/07   / 41 INCHES ON 03/08-09


AVERAGE WIND / DEPARTURE FROM NORMAL / PEAK WIND /MPH/
 GREAT FALLS....11.0 MPH / -1.1 / 64 MPH ON 09/30... 8TH CALMEST YR
 HAVRE.......... 9.5 MPH / -0.4 / 71 MPH ON 08/29...38TH CALMEST YR
 HELENA......... 6.4 MPH / -0.2 / 58 MPH ON 04/29... 7TH CALMEST YR
 BOZEMAN........ 5.3 MPH / -0.3 / 63 MPH ON 07/12... 4TH CALMEST YR
 CUT BANK.......12.6 MPH / +0.2 / 74 MPH ON 01/09...28TH WINDIEST YR
 DILLON......... 8.9 MPH /  0.0 / 70 MPH ON 08/23...14TH WINDIEST YR
 LEWISTOWN...... 8.7 MPH / -0.5 / 81 MPH ON 06/19...11TH CALMEST YR

LAST SPRING FROST / FIRST FALL FROST
                       AVERAGE            AVERAGE
 GREAT FALLS....05/08   05/13   /  09/27   09/25
 HAVRE..........05/06   05/13   /  10/03   09/20
 HELENA.........05/02   05/21   /  09/27   09/22
 BOZEMAN........06/01   06/02   /  09/27   09/11
 CUT BANK.......05/08   05/26   /  09/26   09/12
 DILLON.........05/05   06/03   /  09/27   09/12
 LEWISTOWN......06/05   05/29   /  09/27   09/11

DAYS OF MAXIMUM TEMPERATURE 90F OR HIGHER / 32F OR LOWER
                    AVERAGE        AVERAGE
 GREAT FALLS.... 37    18    /  37   40
 HAVRE.......... 24    24    /  57   54
 HELENA......... 32    24    /  32   41
 BOZEMAN........ 26    33    /  43   35
 CUT BANK.......  6     8    /  46   48
 DILLON......... 14     8    /  33   45
 LEWISTOWN...... 11    11    /  47   44

DAYS WITH MINIMUM TEMPERATURE 32F OR LOWER / 0F OR LOWER
                     AVERAGE       AVERAGE
 GREAT FALLS.... 175   166   /  13   21
 HAVRE.......... 192   180   /  24   31
 HELENA......... 172   167   /  14   18
 BOZEMAN........ 205   178   /  21   22
 CUT BANK....... 189   183   /  19   27
 DILLON......... 199   191   /  15   14
 LEWISTOWN...... 194   181   /  19   21

MILESTONES REACHED DURING 2013...
BOZEMAN...
 FEB...PRECIPITATION OF 0.07 INCHES WAS THE DRIEST OF RECORD. THE
       OLD RECORD WAS 0.08 INCHES SET IN 2006.
 MAR...PRECIPITATION OF 0.20 INCHES WAS THE SECOND DRIEST OF RECORD.
 JUL...AVERAGE WIND SPEED OF 5.4 MPH IS THE FOURTH CALMEST OF
       RECORD.
 AUG...AVERAGE WIND SPEED OF 5.4 MPH IS THE SECOND CALMEST OF
       RECORD.
 SEP...AVERAGE WIND SPEED OF 5.3 MPH IS THE FOURTH CALMEST OF
       RECORD.
 OCT...AVERAGE WIND SPEED OF 4.1 MPH IS THE CALMEST OF RECORD. THE
       OLD RECORD WAS 4.2 MPH SET IN 2010.

CUT BANK...
 JUL...AVERAGE WIND SPEED OF 8.9 MPH IS THE FOURTH CALMEST OF
       RECORD.
 AUG...AVERAGE WIND SPEED OF 10.4 MPH IS THE THIRD CALMEST OF
       RECORD.
 DEC...AVERAGE WIND SPEED OF 18.2 MPH IS THE FOURTH WINDIEST OF
       RECORD.

DILLON...
 MAR...PRECIPITATION OF 0.14 INCHES WAS THE FIFTH DRIEST OF RECORD.
 APR...PRECIPITATION OF 0.14 INCHES WAS THE THIRD DRIEST OF RECORD
       AND DRIEST SINCE 1985.
 MAY...AVERAGE WIND SPEED OF 7.8 MPH WAS THE FOURTH CALMEST OF
       RECORD.
 JUN...AVERAGE WIND SPEED OF 7.2 MPH WAS THE SECOND CALMEST OF
       RECORD.
 JUL...AVERAGE WIND SPEED OF 6.3 MPH WAS THE THIRD CALMEST OF RECORD
       AND THE LOWEST SINCE 1988.
       PEAK WIND GUST OF ONLY 39 MPH WAS THE LOWEST JULY EXTREME
       GUST SINCE 1999, WHEN A GUST OF 38 MPH WAS RECORDED.
 AUG...AVERAGE WIND SPEED OF 6.3 MPH WAS THE THIRD CALMEST OF
       RECORD.
       WIND GUST OF 70 MPH ON THE 23RD SET AN ALL-TIME HIGH GUST FOR
       AUGUST. THE OLD RECORD WAS 66 MPH IN 2007.
 SEP...PRECIPITATION OF 2.46 INCHES WAS THE SECOND WETTEST OF
       RECORD.
 DEC...AVERAGE WIND SPEED OF 12.5 MPH IS THE FOURTH WINDIEST OF
       RECORD.

GREAT FALLS...
 MAY...AVERAGE WIND SPEED OF 9.0 MPH WAS THE FOURTH LOWEST OF
       RECORD. THIS WAS THE LOWEST AVERAGE SINCE 1968.
 JUN...AVERAGE WIND SPEED OF 8.5 MPH WAS THE FOURTH LOWEST OF
       RECORD.
 AUG...AVERAGE WIND SPEED OF 7.7 MPH WAS THE CALMEST OF RECORD. THE
       OLD RECORD WAS 8.0 IN 1950.

HAVRE...
 MAY...PRECIPITATION OF 4.60 INCHES WAS THE FIFTH HIGHEST OF RECORD.
       THIS IS THE HIGHEST MAY AMOUNT SINCE 1974.
 DEC...SNOWFALL OF 20.7 INCHES WAS THE FIFTH HIGHEST OF RECORD.
       HAVRE HAD THEIR WETTEST DECEMBER SINCE 1989.

FOR THE PERIOD FROM JANUARY THROUGH JUNE, THIS WAS THE SECOND
WETTEST FIRST SIX MONTHS OF THE YEAR, WITH 11.20 INCHES. THIS WAS
THE WETTEST SUCH PERIOD SINCE 1887.

HELENA...
 APR...WIND GUST OF 58 MPH ON THE 29TH SET AN ALL-TIME HIGH GUST FOR
       APRIL.
 MAY...AVERAGE WIND SPEED OF 7.0 MPH WAS THE THIRD LOWEST OF RECORD
       AND THE LOWEST SINCE 1994.
 JUN...AVERAGE WIND SPEED OF 6.3 MPH WAS THE THIRD LOWEST OF RECORD
       AND THE LOWEST SINCE 1982.
 AUG...AVERAGE WIND SPEED OF 5.4 MPH WAS THE SECOND LOWEST OF
       RECORD.

LEWISTOWN...
 APR...PEAK GUST OF 64 MPH ON THE 29TH ESTABLISHED AN ALL-TIME APRIL
       RECORD. THE OLD APRIL RECORD WAS 62 MPH IN 2000.
 JUN...PEAK WIND GUST FROM A THUNDERSTORM OF 81 MPH ON THE 19TH
       ESTABLISHED AN ALL-TIME HIGH GUST FOR JUNE AND FOR THE YEAR.
       THE OLD ALL-TIME HIGH GUST WAS 77 MPH SET IN 1949.
 SEP...PEAK GUST OF 60 MPH ON THE 29TH ESTABLISHED AN ALL-TIME
       SEPTEMBER RECORD. THE OLD RECORD WAS 56 MPH IN 1960.


                             NEW RECORD
            TEMPERATURE WARM|       DAILY WIND        DAILY
            HIGHS  LOWS LOWS| HIGH AVG LOW AVG  GUST   PRECIP
BOZEMAN        1    0    2      1       10      19      0
CUT BANK       2    3    3      3        4      10      2
DILLON         8    3   13      2        3      11      3
GREAT FALLS    4    5    2      1       10       5      0
HAVRE          0    4    1      5        3      13      2
HELENA         1    2    1      0       15      10      0
LEWISTOWN      0    1    4      1        3      11      3
W YELLOWSTONE  3    2    1                              0


THE FOLLOWING IS A SUMMARY OF SIGNIFICANT WEATHER EVENTS AND PATTERNS
DURING THE YEAR...

2013...
JANUARY...
A WEAK RIDGE OF HIGH PRESSURE ALOFT DOMINATED THE STATE DURING
JANUARY. THIS RIDGE RESULTED IN ABOVE NORMAL TEMPERATURES ACROSS THE
REGION, EXCEPT THE SOUTHWEST WHERE COLD AIR WAS TRAPPED IN VALLEYS.
TEMPERATURES RANGED FROM FOUR DEGREES ABOVE NORMAL AT VALENTINE, TO
FOUR DEGREES BELOW NORMAL AT WEST YELLOWSTONE. THE FIRST TEN DAYS OF
THE MONTH HAD ABOVE NORMAL TEMPERATURES. WINDY CONDITIONS
ACCOMPANIED THIS WARM STRETCH, WITH A GUST TO 79 MPH WEST OF
CHOTEAU ON THE SEVENTH. CUT BANK HAD A GUST TO 79 MPH ON THE NINTH.
HEAVY SNOW FELL OVER PORTIONS OF THE STATE FROM THE 11TH THROUGH
14TH. THE HIGHWOODS AND BELTS PICKED UP 15 INCHES OF SNOW, WHILE
HOGELAND SAW DRIFTS TO FOUR FEET. MILD AND WINDY CONDITIONS RETURNED
FOR THE NEXT FIVE DAYS. GUSTS TO 87 MPH WERE REPORTED WEST OF
DUPUYER. AT THE END OF THE MONTH, HEAVY SNOW FELL FROM GREAT FALLS
THROUGH NORTH CENTRAL MONTANA. UP TO 10 INCHES OF SNOW FELL FROM
FORT BENTON TO LEWISTOWN.

          HIGH                     LOW
TEMP      59F AT AUGUSTA           -39F AT WEST YELLOWSTONE
PRECIP    1.75 INCHES AT EAST GLACIER 4.11 AT DARKHORSE LAKE SNOTEL
WIND GUST   87 MPH WEST OF DUPUYER
           108 MPH AT GARDEN WALL

FEBRUARY...
DRY AND WARM CONDITIONS PREVAILED DURING MUCH OF FEBRUARY.
TEMPERATURES WERE BELOW AVERAGE IN THE SOUTHWEST, BUT ABOVE NORMAL
ELSEWHERE. AN AREA EAST OF THE DIVIDE FROM CUT BANK TO GREAT FALLS
RECORDED ABOVE NORMAL PRECIPITATION, BUT IT WAS DRY ELSEWHERE. THE
HEAVIEST SNOW FELL FROM THE 12TH THROUGH 18TH. EIGHT INCHES OF SNOW
FELL SOUTH OF ULM AND AT NEIHART. SEVERAL RECORD HIGH TEMPERATURES
WERE SET ON THE 16TH. WINDY AND WARM CONDITIONS RETURNED FOR THE
REST OF THE MONTH. GUSTS REACHED 74 MPH NEAR EAST GLACIER ON THE
24TH.

          HIGH                      LOW
TEMP      61F AT AUGUSTA           -27F AT WHISKEY CREEK
PRECIP    3.89 INCHES AT CRYSTAL LAKE
WIND GUST  89 MPH AT BABB

MARCH...
AN UPPER LEVEL RIDGE OF HIGH PRESSURE DOMINATED THE AREA DURING
MARCH. TEMPERATURES AVERAGED BELOW NORMAL ACROSS MUCH OF THE REGION.
HOLTER DAM DID AVERAGE 1.9F ABOVE NORMAL. PRECIPITATION WAS
GENERALLY BELOW NORMAL, AS WERE AVERAGE WIND SPEEDS. SNOWFALL WAS ON
THE LIGHT SIDE. THIS WAS THE LIGHTEST AVERAGE SNOWFALL IN MARCH
SINCE 2010. WINDY CONDITIONS STARTED OUT THE MONTH, WITH GUSTS
REACHING 83 MPH ALSONG THE ROCKY MOUNTAIN FRONT. ON THE SECOND,
TEMPERATURES WERE AS MUCH AS 20 DEGREES ABOVE NORMAL. SNOW AND COLD
FOLLOWED, WITH HEAVY SNOW PILING TO THREE FEET IN THE BEARS PAWS BY
THE 12TH.

          HIGH                      LOW
TEMP      71F AT AUGUSTA           -19F AT WHISKEY CREEK
PRECIP    4.60 INCHES AT MARIAS PASS
WIND GUST 82 MPH AT MILLEGAN
          83 MPH AT DEEP CREEK RAWS

APRIL...
A TROUGH OF LOW PRESSURE THROUGH THE CENTRAL UNITED STATES
CONTRIBUTED TO MUCH BELOW NORMAL TEMPERATURES. OVER THE REGION, THIS
WAS THE 11TH COLDEST APRIL OF RECORD. PRECIPITATION WAS SLIGHTLY
BELOW NORMAL, WITH SNOWFALL BELOW NORMAL, TOO. THE COOLEST PERIOD FO
THE MONTH WAS FROM THE SEVENTH THROUGH NINTH. TEMPERATURES FELL
BELOW ZERO AT A FEW LOCATIONS. SNOW AND COOL CONDITIONS PREVAILED
FORM THE 12TH THROUGH 24TH. SEVERAL RECORD LOWS WERE SET, AND
TEMPERTURES WERE AS MUYCH AS 20 DEGREES BELOW NORMAL. WINDY AND
SOMEWHAT WARMER CONDITIONS RETURNED FOR THE LAST FEW DAYS OF THE
MONTH. WINDS GUSTED TO 93 MPH AT LOGAN PASS ON THE 29TH.

          HIGH                      LOW
TEMP      80F AT NEAR RUDYARD      -6F AT MARIAS PASS
PRECIP    5.60 INCHES AT MARIAS PASS
WIND GUST  84 MPH NEAR EAST GLACIER
           93 MPH AT LOGAN PASS

MAY...
MAY TEMPERATURES RETURNED TO ABOVE NORMAL WITH A RIDGE OF HIGH
PRESSURE CENTERED OVER THE STATE FOR THE MONTH. PRECIPITATION WAS
BELOW NORMAL. PRECIPITATION FOR THE MONTH EXCEEDED 16 INCHES IN THE
BIG SNOWY MOUNTAINS. AFTER A VERY COLD START, WITH TEMPERATURES
DROPPING BELOW 10F, TEMPERATURES REBOUNDED TO NEAR NORMAL. MANY
LOCATIONS IN CENTRAL MONTANA RECORDED ALL-TIME LOW TEMPERATURES FOR
MAY ON THE FIRST. NINETY-DEGREE TEMPERATURES WERE SEEN ACROSS
CENTRAL AND SOUTHWEST MONTANA ON THE 13TH, AS WINDS RETURNED TO THE
ROCKY MOUNTAIN FRONT. SNOW FELL FROM THE 22ND-23RD AS A BRIEF PERIOD
OF COOLER CONDITIONS RETURNED.

          HIGH                      LOW
TEMP      92F AT TOWNSEND            8F AT GOLD BUTTE
PRECIP   16.40 INCHES AT CRYSTAL LAKE
WIND GUST  80 MPH NEAR BYNUM
           89 AT LOGAN PASS

JUNE...
JUNE TEMPERATURES WERE NEAR NORMAL, WITH POCKETS OF ABOVE AND BELOW
NORMAL PRECIPITATION. A RIDGE OF HIGH PRESSURE OVER THE STATE WAS
SLIGHTLY STRONGER THAN NORMAL. SCATTERED THUNDERSTORMS WERE COMMON
THROUGH MUCH OF THE FIRST 20 DAYS OF THE MONTH. THUNDERSTORM GUSTS
REACHED 72 MPH NEAR WINSTON ON THE 11TH, WHILE GOLF BALL SIZE HAIL
FELL AT BROWNING ON THE 18TH. LEWISTOWN SET AN ALL-TIME WIND GUST
RECORD OF 81 MPH ON THE 19TH WHEN A THUNDERSTORM RACED THROUGH THE
AREA. GUSTS REACHED 96 MPH NEAR FORT BENTON, AND 125 MPH NORTH OF
JOPLIN FROM THUNDERSTORMS.

          HIGH                      LOW
TEMP      94F AT HELENA             23F AT WEST YELLOWSTONE
PRECIP    6.94 INCHES AT SAND CREEK
WIND GUST 125 MPH NEAR JOPLIN

JULY...
JULY HAD NEAR TO ABOVE NORMAL TEMPERATURES, WITH LARGE AREAS OF
BELOW NORMAL PRECIPITATION. THE AREA WITH THE HEAVIEST PRECIPITATION
WAS ACROSS THE HI-LINE AND CENTRAL MONTANA. THUNDERSTORMS ON THE
FIFTH PRODUCED GUSTS TO 67 MPH AT SUN PRAIRIE (CASCADE). AGAIN ON
THE SIXTH, GUSTS REACHED 72 MPH NORTH OF HAVRE.. ON THE 17TH, A
STORM OVER GLACIER NATIONAL PARK PRODUCED LIGHTNING STRIKES THAT
INJURED THREE PEOPLE. MEANWHILE, HEAVY RAIN IN SOUTHWEST MONTANA
CAUSED FLASH FLOODING AND MAJOR DAMAGE AT BANNACK. ON THE 24TH,
THUNDERSTORM WIND GUSTS REACHED 73 MPH AT CONRAD.

          HIGH                      LOW
TEMP     100F AT AUGUSTA/HELENA     30F AT WISDOM AND WISE RIVER
PRECIP    4.47 INCHES AT SUNBURST
WIND GUST  73 MPH AT CONRAD

AUGUST...
WHILE THE FIRST HALF OF AUGUST HAD TEMPERATURES NEAR TO BELOW
NORMAL, THE SECOND HALF OF THE MONTH WAS THE SECOND WARMEST SUCH
PERIOD ON RECORD. FOR THE MONTH, TEMPERATURES WERE ABOVE NORMAL.
PRECIPITATION CONTINUED ABOVE NORMAL ACROSS THE HI-LINE AND POCKETS
OF SOUTHWEST AND CENTRAL MONTANA. THE FIRST DAYS OF THE MONTH WERE
STORMY. LEWISTOWN PICKED UP 1.20 INCHES OF RAIN. THUNDERSTORMS IN
THE SOUTHWEST CAUSED GUSTS TO 104 MPH NEAR POLARIS AND 90 MPH AT
TWIN BRIDGES. SIGNIFICANT DAMAGE OCCURRED IN THESE AREAS, ALONG WITH
A DEVASTATING HAIL STORM ACROSS PORTIONS OF GALLATIN COUNTY. THIS
SET A NEW RECORD FOR AN AUGUST PEAK GUST IN MONTANA. WARMER
CONDITIONS RETURNED MID-MONTH. THE WARMEST TEMPERATURE OF THE MONTH
OCCURRED ON THE 16TH, WHEN GREAT FALLS AND A FEW OTHER LOCATIONS IN
CENTRAL MONTANA REACHED 101F. THUNDERSTORMS IN THE SOUTHWEST CAUSED
A NEW WIND GUST RECORD AT DILLON ON THE 23RD, WHEN THEY REACHED 70
MPH. ON THE 29TH, VERY WARM AIR PRODUCED A NEW RECORD HIGH
TEMPERATURE AT CUT BANK, ALONG WITH STRONG WINDS WITH THUNDERSTORMS.
TREES WERE BLOWN OVER IN GLACIER NATIONAL PARK. HAVRE RECORDED A
PEAK GUST OF 71 MPH.

          HIGH                      LOW
TEMP     101F AT GREAT FALLS        28F AT WISDOM AND GATES PARK
PRECIP    3.35 INCHES NEAR NEIHART
WIND GUST 104 MPH NEAR POLARIS

SEPTEMBER...
IN SEPTEMBER...ABOVE NORMAL TEMPERATURES AND ABOVE NORMAL
PRECIPITATION DOMINATED. TEMPERATURES WERE AS MUCH AS FIVE DEGREES
ABOVE NORMAL. THIS WAS THE FIFTH CONSECUTIVE MONTH WITH
ABOVE NORMAL TEMPERATURE AVERAGES. PRECIPITATION WAS ABOVE AVERAGE,
WITH A DEPARTURE OF 293 PERCENT AT DILLON. MOST AREAS, EXCEPT AROUND
GREAT FALLS, HAD ABOVE TO MUCH ABOVE NORMAL PRECIPITATION.
THUNDERSTORMS ON THE FIFTH CAUSED 79 MPH WINDS AROUND WHITEHALL AND
DAMAGED A FEW BUILDINGS. HEAVY RAIN ALONG THE ROCKY MOUNTAIN FRONT
ON THE SIXTH PRODUCED OVER THREE INCHES OF RAIN AT HEART BUTTE. THE
FIRST SNOWS OF THE SEASON FELL AT BIG SKY AND LOGAN PASS ON THE
18TH. THE LAST FEW DAYS OF THE MONTH BROUGHT MORE SNOW TO SOUTHWEST
MONTANA. UP TO 10 INCHES FELL OVER THE CASTLE AND LITTLE BELT
MOUNTAINS.

          HIGH                     LOW
TEMP     100F AT BIG SANDY         17F AT WISDOM AND GATES PARK
PRECIP    5.50 INCHES AT HEART BUTTE
WIND GUST  80 MPH AT DEEP CREEK RAWS

OCTOBER...
GENERAL NORTHWEST FLOW CONTRIBUTED TO BELOW NORMAL TEMPERATURES AND
MIXED PRECIPITATION AMOUNTS IN OCTOBER. THE COOLEST DEPARTURES WERE
ACROSS THE SOUTHWEST, UP TO FIVE DEGREES BELOW NORMAL. AT BOZEMAN IT
WAS THE FIFTH COOLEST OCTOBER OF RECORD. PRECIPITATION WAS BELOW
NORMAL OVER NORTHERN AND SOUTHWEST MONTANA. ABOVE NORMAL AMOUNTS
FELL OVER CENTRAL MONTANA. SNOWFALL WAS HEAVY ALONG THE ROCKY
MOUNTAIN FRONT, WITH NEARLY 1.5 FEET MEASURED AT HEART BUTTE. WINDS
WERE GENERALLY LIGHTER THAN NORMAL, WITH THE PEAK VALUE FOR THE
MONTH ONLY 59 MPH AT DEEP CREEK RAWS.

          HIGH                      LOW
TEMP      83F AT ARMELLS CREEK       0F AT ST MARY
PRECIP    5.60 INCHES AT ALBRO LAKE
WIND GUST  69 MPH AT DEEP CREEK RAWS

NOVEMBER...
DURING NOVEMBER, A RIDGE OF HIGH PRESSURE CONTINUED ALONG THE WEST
COAST. THIS CONTRIBUTED TO NEAR NORMAL TEMPERATURES, AND SLIGHTLY
BELOW NORMAL PRECIPITATION. ABOVE NORMAL PRECIPITATION FELL OVER
PORTIONS OF THE HI-LINE, WITH BELOW NORMAL AMOUNTS ELSEWHERE.
TEMPERATURES WERE AS MUCH AS THREE DEGREES BELOW NORMAL OVER
NORTHERN MONTANA, WITH THREE DEGREES ABOVE NORMAL DEPARTURES AROUND
DILLON. THE COOL CONDITIONS OVER THE NORTH PRODUCED THE COOLEST
NOVEMBER SINCE 2010 AT CUT BANK. THE WARMEST TEMPERATURE WAS 70F AT
STANFORD ON THE 12TH, AND THE COOLEST WAS -22F AT WHISKEY CREEK ON
THE 21ST.
SIGNIFICANT SNOW FELL ON THE 15TH AS A STRONG AREA OF LOW PRESSURE
BRUSHED THE STATE. AFTERWARDS, COLD AIR POURED INTO THE STATE. ON
THE 19TH, A COLD FRONT BROUGHT SHARP TEMPERATURE CHANGES. THE
TEMPERATURE FELL 20 DEGREES IN 4 MINUTES AS THE FRONT PASSED THROUGH
GREAT FALLS.

          HIGH                        LOW
TEMP      70F AT STANFORD             -22F AT WHISKEY CREEK
PRECIP    8.00 INCHES AT BLACK BEAR SNOTEL
WIND GUST   80 MPH AT DEEP CREEK RAWS


DECEMBER...
DECEMBER TEMPERATURES AVERAGED BELOW NORMAL MOST AREAS, EXCEPT IN
THE HELENA VALLEY. TEMPERATURES DEPARTURES RANGED FROM 10 DEGREES
BELOW NORMAL ALONG THE INTERNATIONAL BORDER IN HILL COUNTY, TO TWO
DEGREES ABOVE NORMAL AT HELENA. PRECIPITATION WAS GENERALLY ABOVE
NORMAL, EXPECT IN THE SOUTHWEST. VERY COLD AIR OVER THE FIRST WEEKEND
BROUGHT THE COLDEST AIR SINCE 2009 TO PORTIONS OF THE AREA. LOW
TEMPERATURES IN THE -40F RANGE WERE MEASURED ACROSS MUCH OF THE HI-
LINE. TEMPERATURES WERE AS MUCH AS 50 DEGREES BELOW NORMAL. A LOW
TEMPERATURE OF -48F NEAR SUNBURST WAS THE COLDEST TEMPERATURE
RECORDED IN MONTANA SINCE JANUARY 2007. MILDER CONDITIONS PREVAILED
DURING MUCH OF THE REST OF THE MONTH.  ACCOMPANYING THE MILD
CONDITIONS WERE WINDIER THAN NORMAL CONDITIONS.

          HIGH                      LOW
TEMP      62F AT LITTLE SNOWY &    -48F AT SUNBURST 8E
                 SUNBURST 8E
PRECIP    7.20 INCHES AT BRACKETT CREEK SNOTEL
WIND GUST  114 MPH AT LOGAN PASS

$$
&&

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Page last modified: May 16, 2007
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