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Sunday, December 7, 2014

December 8, 2014

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, DECEMBER…

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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, DECEMBER 7, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME

RAW, WET SATURDAY GIVES WAY TO COLDER, DRIER SUNDAY

Rain that fell on and off throughout all of Saturday
continued into the early morning hours of Sunday
until finally coming to an end before 3:00 AM EST.
Precipitation, falling completely as rain totaled
1.26 inches falling from late Friday night through
early this morning.

Temperatures that lingered in the mid to upper 30s
yesterday afternoon and overnight, dropped below
freezing just before the 7:00 AM EST observation
and have continued to sit at the 31F mark for several
hours under mostly cloudy skies and a cold northerly
wind.

By the 1:00 PM EST observation temperatures had only
budged 1 degree over the previous 6 hours to just under
32F. Much drier conditions were found with dew points
dipping down into the upper teens and visibility
increasing to over 80 miles to the west.

Today’s Observations:

7 A.M.
Weather: Broken altostratus, overcast cirrostratus,
few stratocumulus distant offshore NE-S, altocumulus
lenticularis in all directions, light spots in overcast
distant WNW-N
Temperature: 31F; Dew Point: 26F; Wind: N at 14G22 kts
Sea-level pressure: 30.38 ins. Hg, falling then more slowly
Visibility: 30 miles
6-hr max temp: 34F
6-hr min temp: 31F
24-hr precip: 0.89 inch
BHO SA 1155 E130 BKN 250 OVC 30 289/31/26/3514G22/038/
FEW SC DSNT OFFSHR NE-S ACSL ALQDS LGT SPTS INOVC DSNT WNW-N/
8/547 53028 ASOS 60006 ASOS 70087 MANUAL 70089 10034 20031

10 A.M.
Weather: Scattered altostratus, broken cirrus,
few stratocumulus distant offshore NE-SSE
Temperature: 31F; Dew Point: 21F; Wind: N at 15G23 kts
Sea-level pressure: 30.47 ins. Hg, rising, then more slowly
Visibility: 70 miles, except 40 miles NE-SSE, 80 miles W-NNW
3-hour precip: 0.00
BHO SA 1455 130 SCT E250 BKN 70 319/31/21/3615G23/047/
VSBY NE-SSE 40 MI VSBY W-NNW 80 MI FEW SC DSNT OFFSHR NE-SSE
SUN DMLY VSBL/ 8/512 51030

1 P.M.
Weather: Broken cirrus, few stratus fractus distant offshore
NE and SE, few altostratus NE-SE
Temperature: 32F; Dew Point: 18F; Wind: N at 11G18 kts
Sea-level pressure: 30.51 ins. Hg, rising, then more quickly
Visibility: 80 miles, except 50 miles NE-SSE
6-hr max temp: 32F
6-hr min temp: 31F
6-hour precip: 0.00
BHO SA 1755 E250 BKN 80 322/32/18/3411G18/051/ VSBY NE-SSE 50 MI
FEW STFRA DSNT OFFSHR NE AND SE FEW AS NE-SE/ 8/711 53003 10032
20031

SUMMARY FOR SATURDAY, DECEMBER 6, 2014

TEMPERATURE (DEGREES F)
MAX…..43   NORMAL…..42
MIN…..36   NORMAL…..27
MEAN….40   NORMAL…..35

DEPARTURE FROM 30-YEAR NORMAL…………………….+5
TOTAL DEPARTURE FOR THE MONTH……………………+19 [+3.0 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..25  DEPARTURE………..-5
TOTAL HEATING UNITS FOR THE MONTH………….157  DEPARTURE……….-20
TOTAL HEATING UNITS FOR THE SEASON………..1316  DEPARTURE………-122
TOTAL HEATING UNITS LAST SEASON TO DATE……1375  DIFFERENCE………-59

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………25 NNW AT 11:13 P.M.
ASOS…………………..29 N   AT 11:13 P.M.
DAVIS………………….27 NNW AT 11:13 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY………………..19 NNW AT 11:19 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..18 N   AT 11:20 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….17 NNW AT 11:20 P.M.
AVERAGE WIND SPEED AND DIRECTION………….9.8 NNW
ASOS………………….9.9
DAVIS…………………8.8 NW (323 degrees)
* Last of several occurrences…

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.89  DEPARTURE…..+0.73
ASOS…………..0.87
TOTAL PRECIPITATION FOR THE MONTH……….1.68  DEPARTURE…..+0.70
ASOS…………..1.70
TOTAL PRECIPITATION FOR THE YEAR……….49.44  DEPARTURE…..-0.07
ASOS………….49.89

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0  DEPARTURE……-0.3
TOTAL SNOWFALL FOR THE MONTH…………..TRACE  DEPARTURE……-1.7
TOTAL SNOWFALL FOR THE SEASON……………8.7  DEPARTURE……+4.4

PRELIMINARY CLIMATE SUMMARY FOR DECEMBER CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOWFALL/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY GUST
RMY:  R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized

12/1  63/37/50/+13/0.01/0.0/…/..             28 WNW RMY 31
12/2  37/30/34/-2/…./T/000/00                26 E   RMY 29
12/3  49/34/42/+6/…./0.0/000/00              40 W   RMY 43
12/4  41/27/34/-1/…./0.0/…/..              29 WNW RMY N/A
12/5  42/23/33/-2/…./0.0/…/..              21 E   RMY 22
12/6  43/36/40/+5/…./0.0/000/00              25 NNW RMY N/A

12/7  morning low temp: 31F since midnight; the normal low is now 27F

DAILY RECORDS FOR DECEMBER 2014:
None so far.

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):

RECORDS FOR DECEMBER 7
HIGH 74 IN 1998
LOW 6 IN 1906
PRECIP 1.67 INS. IN 1953
SNOWFALL 6.3 INS. IN 2003
PEAK GUST 76e SE IN 1976

RECORDS FOR DECEMBER 8
HIGH 62 IN 1966
LOW -4 IN 1906
PRECIP 1.54 INS. IN 1969
SNOWFALL 2.5 INS. IN 2001
PEAK GUST 78e W IN 1979

TODAY’S REPORT PREPARED BY: Brian Fitzgerald

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Blue Hill Observatory & Science Center · Legal

Data Use & Privacy Policy

Please read the full Policy before accessing Observatory data · Effective January 1, 2025

Notice: By accessing, downloading, or using any Blue Hill Observatory data or services, you unconditionally accept and agree to be bound by this Policy in its entirety. If you do not agree, you may not access or use Observatory data.
Effective January 1, 2025 · Milton, Massachusetts · bluehill.org
Part I — Data Use Policy
§ 01

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Effective January 1, 2025 · Blue Hill Observatory & Science Center · Milton, Massachusetts
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