2006-2007 "Climatological Winter" Summary

Story Published: Mar 19, 2007 at 9:08 PM EDT

Story Updated: Mar 19, 2007 at 9:08 PM EDT

By Brandon Butcher

THE FOLLOWING IS A CLIMATOLOGICAL SUMMARY FOR THE WINTER
OF 2006-07. CLIMATOLOGICAL WINTER IS DEFINED AS THE MONTHS
OF DECEMBER...JANUARY AND FEBRUARY RESPECTIVELY.

OVERALL...WARMER AND DRIER THAN NORMAL CONDITIONS PREVAILED
DURING THE THREE MONTH PERIOD...BUT WITH A CONSIDERABLE AND
DISTINCT DROP IN DAILY AVERAGE TEMPERATURES NOTED THE SECOND
HALF OF CLIMATOLOGICAL WINTER BEGINNING ON JANUARY 16TH.
IN ADDITION THERE WAS AN INCREASE IN SNOWFALL ACCUMULATION
THE SECOND HALF OF CLIMATOLOGICAL WINTER OF 2006-2007.

A MODERATE EL NINO DURING THE FIRST HALF OF CLIMATOLOGICAL
WINTER GAVE WAY TO A NEUTRAL ENSO PATTERN DURING THE SECOND
HALF OF CLIMATOLOGICAL WINTER WITH THE ARCTIC OSCILLATION AND
NORTHERN ATLANTIC OSCILLATION PHASES EVENTUALLY TURNING MORE
NEGATIVE. THIS EVENTUALLY ALLOWED MUCH COLDER AIR TO PENETRATE
INTO SOUTHERN NEW ENGLAND.

THE FOLLOWING IS A LIST OF CLIMATE DATA AND INFORMATION FOR SEVERAL
OF THE LONG TERM SOUTHERN NEW ENGLAND CLIMATOLOGICAL DATA SITES.
 

BOSTON MA LOGAN INTL ARPT OFFICIAL RECORDS SINCE 1872
             AVG TEMP         PRECIPITATION       SNOWFALL
                     DEPARTURE          DEPARTURE      DEPARTURE
DEC 2006      41.1F    +6.3F      1.89"   -1.84"    0.8"  -6.1"
JAN 2007      32.7F    +3.4F      2.57"   -1.35"    1.0" -12.3"
FEB 2007      26.2F    -5.3F      2.20"   -1.10"    4.6"  -6.7"

CLIMATOLOGICAL
WINTER 2006   33.3F    +1.5F      6.66"   -4.29"    6.4" -25.1"
-2007
WINTER 2005   33.3F    +1.5F     10.11"   -0.84"   38.8"  +7.3" 
-2006
MONTHLY AVGS.

"FIRST HALF"
DEC 1-JAN15   41.4F    +8.5F      4.23"   -1.40"    0.8" -12.1"     
2006-2007

-WARMEST "FIRST HALF" OF CLIMATOLOGICAL WINTER ON RECORD BEATS 38.7F
2001-2002. NO DAYS WITH SUBFREEZING HIGH TEMPERATURES.

"SECOND HALF" 26.9F    -4.6F      2.43"   -2.89"    5.6" -13.0"
JAN16-FEB28
2006-2007

-19 DAYS WITH SUBFREEZING TEMPERATURES (BELOW 32 DEGREES) DURING
THE "SECOND HALF" OF CLIMATOLOGICAL WINTER WHICH BEATS THE JAN-FEB
NORMAL TWO MONTH AVERAGE OF 17.

REMARKS...

-THE 2006-07 SNOW SEASON TOTAL OF 6.4" IS THE LEAST SNOWIEST TOTAL
THROUGH THE END OF FEBRUARY...BEATING 7.1" IN 1936-37.
-THE FIRST FULL INCH OF SNOW FOR THE SNOW SEASON DID NOT ACCUMULATE
UNTIL JANUARY 22ND 2007...WHICH WAS THE SECOND LATEST DATE ON RECORD.
THE LATEST DATE FOR A FULL INCH OF SNOW OR MORE IS JANUARY 29TH 1928.
-THE FIRST CALENDAR DAY WITH EQUAL OR GREATER THAN ONE INCH OF SNOW
ACCUMULATION...2.5 INCHES...WAS FEBRUARY 14TH 2007...WHICH IS NOW
THE LATEST CALENDAR DAY RECORD FOR ONE INCH OF SNOW ACCUMULATION OR
MORE. THE PREVIOUS LATEST CALENDAR DAY RECORD FOR ONE INCH OR MORE
OF SNOW ACCUMULATION WAS JANUARY 29 1928 WHEN 3.7 INCHES FELL THAT
DAY.
-THE 2006-07 CLIMATOLOGICAL WINTER SNOWFALL TOTAL OF 6.4" WAS THE
SECOND LEAST ON RECORD COMPARED TO 1936-37 WHEN THE TOTAL WAS 2.7"
-THE 6.66" TOTAL IS THE EIGHTH DRIEST CLIMATOLOGICAL WINTER ON
RECORD AND THE DRIEST SINCE 1988-89.
- THE 2006-2007 CLIMATOLOGICAL WINTER AVERAGE TEMPERATURE DID NOT
RANK WITHIN THE TOP TEN WARMEST BUT IT WAS THE MILDEST SINCE THE
2001-2002 CLIMATOLOGICAL WINTER WHEN THE AVERAGE WAS 37.9 DEGREES. 
-THERE WAS A SIX CONSECUTIVE DAY STRETCH WITH HIGH TEMPERATURES
BELOW 32 DEGREES FROM FEBRUARY 4TH THROUGH FEBRUARY 9TH 2007. THIS
WAS THE LONGEST STRETCH SINCE A 13 DAY STRETCH FROM 1/16-1/28 2005. 

HARTFORD-BRADLEY CT INTL ARPT OFFICAL RECORDS SINCE NOV 1904
            AVG TEMP        PRECIPITATION       SNOWFALL
                    DEPARTURE          DEPARTURE       DEPARTURE
DEC 2006      38.0F    +7.2F      1.83"   -1.77"   TRACE    -8.4"
JAN 2007      31.5F    +5.8F      2.81"   -1.03"    1.2"   -13.1"
FEB 2007      24.0F    -4.8F      1.54"   -1.42"   11.2"    +0.5"

CLIMATOLOGICAL
WINTER 2006   31.2F    +3.1F      6.18"   -4.22"   12.4"   -21.0"   
-2007
WINTER 2005   30.4F    +2.0F     12.25"   +1.85"   60.6"   +27.2"
-2006

MONTHLY AVG.

"FIRST HALF"
DEC 1-JAN15   38.9F    +9.7F      4.52"   -0.97"   TRACE   -15.2"
2006-2007

-WARMEST "FIRST HALF" OF CLIMATOLOGICAL WINTER ON RECORD BEATS 36.5F
1931-1932. ONE DAY DECEMBER 8TH WITH A SUBFREEZING HIGH TEMPERATURE.

"SECOND HALF" 23.5F    -3.6F      1.66"   -3.25"   12.4"    -5.8"
JAN16-FEB28
2006-2007

-18 DAYS WITH SUBFREEZING TEMPERATURES (BELOW 32 DEGREES) DURING THE
"SECOND HALF" OF CLIMATOLOGICAL WINTER WHICH IS MINUS ONE DAY BELOW
THE JAN-FEB NORMAL TWO MONTH AVERAGE OF 19.

REMARKS...
-THE 2006-2007 CLIMATOLOGICAL WINTER AND SEASONAL SNOWFALL TOTAL
THROUGH THE END OF FEBRUARY OF 12.4" WHICH IS THE LEAST SINCE
2001-02.
-THE 2006-2007 CLIMATOLOGICAL WINTER TOTAL WAS APPROXIMATELY SIXTH
LEAST SNOWIEST ON RECORD AND SEASONAL SNOWFALL TOTAL APPROXIMATELY
SEVENTH LEAST SNOWIEST ON RECORD. *OFFICIAL SNOWFALL TOTALS WERE 
INCOMPLETE FROM 1997-2001.
-THE FIRST MEASURABLE SNOWFALL OF THE SNOW SEASON (0.5 INCH) DID NOT
OCCUR UNTIL JANUARY 18TH 2007 WHICH WAS THE SECOND LATEST DATE EIGHT
DAYS PRIOR TO THE LATEST OFFICIAL DATE (0.1 INCH) JANUARY 26TH 1928.
-THE FIRST FULL INCH OF SNOW FOR THE SNOW SEASON DID NOT ACCUMULATE
UNTIL JANUARY 22ND 2007...WHICH WAS THE SECOND LATEST DATE ON
RECORD. THE LATEST DATE FOR A FULL INCH OF SNOW OR MORE IS JANUARY
29TH 1928.
-THE FIRST CALENDAR DAY WITH EQUAL OR GREATER THAN ONE INCH OF SNOW
ACCUMULATION...2.5 INCHES...WAS FEBRUARY 2ND 2007...WHICH IS NOW
THE LATEST CALENDAR DAY RECORD FOR ONE INCH OF SNOW ACCUMULATION OR
MORE. THE PREVIOUS LATEST CALENDAR DAY RECORD FOR ONE INCH OR MORE
OF SNOW ACCUMULATION WAS JANUARY 29 1928 WHEN 2.3 INCHES FELL THAT
DAY.
-THE 6.18" TOTAL IS THE FIFTH DRIEST CLIMATOLOGICAL WINTER ON RECORD
AND THE DRIEST SINCE 2001-02 WHEN JUST 4.90" ACCUMULATED.
-THE 2006-07 CLIMATOLOGICAL WINTER WAS THE MILDEST SINCE 2001-02
WHEN A 35.2 DEGREES AVERAGE WAS RECORDED. HOWEVER THE 2006-2007
AVERAGE DID NOT RANK WITHIN THE TOP TEN WARMEST.
-THERE WAS A SIX CONSECUTIVE DAY STRETCH WITH HIGH TEMPERATURES
BELOW 32 DEGREES FROM FEBRUARY 4TH THROUGH FEBRUARY 9TH 2007. THIS
WAS THE LONGEST STRETCH SINCE A 15 DAY STRETCH FROM 1/15-1/29 2005.

WORCESTER MA REGIONAL ARPT
           AVG TEMP        PRECIPITATION      SNOWFALL
                  DEPARTURE          DEPARTURE      DEPARTURE
DEC 2006      36.3F    +7.4F     2.49"   -1.31"    1.1"   -10.6"
JAN 2007      28.4F    +4.8F     3.11"   -0.96"    3.9"   -12.0"
FEB 2007      20.7F    -5.3F     1.73"   -1.37"   20.8"    +7.2"

CLIMATOLOGICAL
WINTER 2006   28.5F    +2.3F     7.33"   -3.64"   25.8"   -15.4"
-2007
WINTER 2005   28.7F    +2.6F    12.53"   +1.56"   61.5"   +20.3"
-2006
MONTHLY AVGS.

"FIRST HALF"
DEC 1-JAN15   36.9F    +9.7F     5.30"   -0.52"    1.1"   -18.1"  
2006-2007

-WARMEST "FIRST HALF" OF CLIMATOLOGICAL WINTER ON RECORD BEATS 33.8F
1923-1924. FOUR DAYS WITH SUBFREEZING HIGH TEMPERATURES.

"SECOND HALF" 20.1F    -4.6F     2.03"   -3.12"   24.7"    +2.7"
JAN16-FEB28
2006-2007

-28 DAYS WITH SUBFREEZING TEMPERATURES (BELOW 32 DEGREES) DURING THE
"SECOND HALF" OF CLIMATOLOGICAL WINTER WHICH PLUS 3 DAYS ABOVE THE
JAN-FEB NORMAL TWO MONTH AVERAGE OF 25.

REMARKS...
-2006-07 CLIMATOLOGICAL WINTER AND SEASONAL SNOWFALL TOTALS THROUGH
THE END OF FEBRUARY IS 25.8". THIS IS THE LEAST SINCE 1994-95 WHEN
20.8" ACCUMULATED DURING CLIMATOLOGICAL WINTER AND THE SEASONAL
TOTAL THROUGH THE END OF FEBRUARY WAS 24.9". *OFFICIAL SNOWFALL
TOTALS WERE INCOMPLETE FROM 1997 THROUGH 2001.
-THE FIRST MEASURABLE SNOWFALL OF THE SNOW SEASON (0.4 INCH) DID NOT
OCCUR UNTIL DECEMBER 8TH 2006 WHICH WAS ONE WEEK PRIOR TO THE LATEST
OFFICIAL DATE ON RECORD DECEMBER 15TH 1950.
-THE FIRST FULL INCH OF SNOW FOR THE SNOW SEASON DID NOT ACCUMULATE
UNTIL DECEMBER 30TH 2006...WHICH WAS THE SECOND LATEST DATE ON
RECORD. THE LATEST DATE FOR A FULL INCH OF SNOW OR MORE IS JANUARY
3RD 1974.
-THE FIRST CALENDAR DAY WITH EQUAL OR GREATER THAN ONE INCH OF SNOW
ACCUMULATION...1.8 INCHES...WAS JANUARY 22ND 2007...THIS IS NOW
THE LATEST CALENDAR DAY RECORD FOR ONE INCH OF SNOW ACCUMULATION OR
MORE. THE PREVIOUS LATEST CALENDAR DAY RECORD FOR ONE INCH OR MORE
OF SNOW ACCUMULATION WAS JANUARY 4 1942 WHEN 6.0 INCHES FELL AND
JANUARY 4TH 1974 WHEN 1.0 INCH FELL THAT DAY RESPECTIVELY. 
-THE 7.33" PRECIPITATION TOTAL IS THE DRIEST CLIMATOLOGICAL WINTER
SINCE 2001-02 WHEN JUST 6.49" ACCUMULATED. HOWEVER THIS WINTER DID
NOT RANK WITHIN THE TOP TEN DRIEST CLIMATOLOGICAL WINTERS.
-THE 2006-07 CLIMATOLOGICAL WINTER WAS THE MILDEST SINCE 2005-06
WHEN THE AVERAGE TEMPERATURE WAS 28.7F. THIS WINTER DID NOT RANK
WITHIN THE TOP TEN WARMEST CLIMATOLOGICAL WINTERS.
-THERE WAS A NINE CONSECUTIVE DAY STRETCH WITH HIGH TEMPERATURES
BELOW 32 DEGREES FROM FEBRUARY 3RD THROUGH FEBRUARY 11TH 2007. THIS
WAS THE LONGEST STRETCH SINCE A 15 DAY STRETCH FROM 1/15-1/29 2005.
-THERE WAS A 17 CONSECUTIVE DAY STRETCH WITH HIGH TEMPERATURES AT
OR BELOW 32 DEGREES WHICH WAS THE SEVENTH LONGEST DURATION ON
RECORD. THIS WAS LONGEST STRETCH SINCE 22 CONSECUTIVE DAYS FROM
1/11-2/1 2003.

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