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ANNUAL CLIMATIC SUMMARY FOR HAVRE
NATIONAL WEATHER SERVICE GREAT FALLS MT
1111 PM MST SUN DEC 31 2000

ANNUAL WEATHER SUMMARY FOR HAVRE FOR 2000.

AVERAGE TEMPERATURE..................:  42.3
DEPARTURE FROM NORMAL................:  -0.7
HIGHEST TEMPERATURE..................:  101 ON JULY 29TH-30TH AND AUGUST 9TH
LOWEST TEMPERATURE...................:  -30 ON DECEMBER 12TH

TOTAL PRECIPITATION (INCHES).........:   8.37
DEPARTURE FROM NORMAL................:  -2.79    
GREATEST IN 24 HOURS.................:   0.96 ON MAY 31ST

THE YEAR IN HAVRE WILL BE REMEMBERED FOR BEING EXTREMELY DRY. 
ALTHOUGH THE SUMMER MONTHS WERE HOTTER THAN USUAL...COLDER THAN NORMAL 
PERIODS IN THE SPRING AND FALL PUT THE YEARLY AVERAGE TEMPERATURE 
NEAR NORMAL.

MEMORABLE WEATHER EVENTS DURING 2000 IN HAVRE...

THE YEAR BEGAN WITH MILD CONDITIONS FOR THE SEASON. A RARE TASTE OF A 
TYPICAL WINTER BEGAN ON FEBRUARY 9TH AS A CANADIAN AIR MASS MOVED IN. 
TEMPERATURES STAYED BELOW FREEZING UNTIL THE 19TH. MARCH AND APRIL 
CONTINUED THE DRY AND MILD START TO THE YEAR. TEMPERATURES WERE BELOW 
NORMAL FOR ONLY 5 DAYS DURING MARCH AND THERE WERE 8 DAYS WITH A HIGH 
OF AT LEAST 70 IN APRIL. BY THE END OF APRIL THE ANNUAL PRECIPITATION 
DEFICIT WAS ALREADY OVER AN INCH.

MAY WAS THE WETTEST MONTH OF THE YEAR WITH 2.06 INCHES OF 
PRECIPITATION. THE TWO WETTEST DAYS OF THE YEAR OCCURRED ON THE 11TH 
AND THE 31ST. A COOLER PATTERN SET UP IN THE 2ND WEEK OF JUNE WHEN A 
NORTHWEST FLOW DEVELOPED. WHILE THERE WERE 13 DAYS WITH MEASURABLE 
RAIN...ONLY ONE DAY HAD MORE THAN A TENTH OF AN INCH. 

ANOTHER WET PERIOD WAS THE FIRST WEEK OF JULY. COOLER TEMPERATURES 
ALOFT COMBINED WITH WARM MOIST AIR AT THE SURFACE AND TOUCHED OFF A 
DAILY ROUND OF AFTERNOON THUNDERSTORMS BETWEEN THE 1ST AND THE 9TH. 
OVER AN INCH OF RAIN WAS RECEIVED DURING THIS PERIOD.

IT THEN RETURNED TO A DRY PATTERN THAT CONTINUED THROUGH THE 
MIDDLE OF SEPTEMBER. BUT UNLIKE THE PREVIOUS MONTHS...THIS DRY SPELL 
WAS WORSENED BY ABOVE NORMAL TEMPERATURES THAT BAKED THE SOIL. THERE 
WERE 11 DAYS IN THE 90S IN JULY AND 12 IN AUGUST. OVERALL...THERE WERE 
26 DAYS WITH A READING OF A LEAST 90 DURING THE YEAR...AND 4 DAYS OF 
AT LEAST 100 DEGREE WEATHER.

ONE OF THE HOTTEST MID-SEPTEMBER DAYS EVER RECORDED IN MONTANA TOOK 
PLACE ON THE 15TH...WITH HAVRE GETTING UP TO A RECORD HIGH 94 DEGREES. 
BUT THEN THE HEAT WAVE CAME TO AN ABRUPT END...AND THE CITY PICKED UP 
ITS FIRST SNOW ON THE 21ST. A MOIST LOW PRESSURE SYSTEM SET UP OVER 
CENTRAL MONTANA ON OCTOBER 12TH AND 13TH PROVIDING OVER A HALF INCH OF 
RAIN.

A CANADIAN AIR MASS VISITED HAVRE ON NOVEMBER 4TH AFTER A COLD FRONT 
PUSHED SOUTH. THE CITY DID NOT SEE ABOVE FREEZING TEMPERATURES BETWEEN 
THE 6TH AND THE 13TH. ANOTHER CANADIAN PLUNGE GREETED HAVRE ON THE 
MORNING OF DECEMBER 9TH...KEEPING THE CITY WELL BELOW NORMAL FOR THE 
NEXT WEEK.

A REVIEW OF TEMPERATURE RECORDS SET OR TIED DURING 2000...

DATE    RECORD     VALUE   OLD RECORD    YEAR
MAY 1    HIGH        86        82        1981
MAY 24   LOW         30        32        1904
JUN 27   LOW         36        39        1985
JUL 5    LOW         39        44        1994
AUG 9    HIGH       101       101        1940 1991
AUG 21   LOW         40        40        1904 1913
AUG 29   LOW         37        37        1937 1946
SEP 15   HIGH        94        94        1979
OCT 6    LOW         12        13        1898 1952
OCT 7    LOW          9         9        1898


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