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Friday, December 9, 2022

December 9, 2022

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA FRIDAY, DECEMBER 9, 2022 ALL TIMES ARE…

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

FRIDAY, DECEMBER 9, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0702E
SUNSET:  1611E

ABUNDANT SUNSHINE AND SEASONABLE TEMPS WITH A BRISK WIND….

What a spectacular day! Not a cloud to be found out there
this afternoon, not even in the distance. The air is
crisp and clear as noted by a dew point in the low teens
and a visibility of a perfect 90 miles. It doesn’t get
much better than this. Temperatures are near normal for
this data with a high in the low-mid 40s so far and the
morning low in the upper 20s.

The wind has been on the brisk side out of a northerly
direction. The average speed so far for today is around
12 mph with gusts between 25-30mph.

As mentioned, the visibility is excellent, rising from
70 miles early this morning to a perfect 90 miles by
early this afternoon.

The high so far today is 44F, which is 2 degrees above
the normal maximum of 42F. The low since midnight is 29F,
which is 2 degrees above the normal low of 27F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Clear, few stratocumulus NE-E-SE
Temperature: 29F; Dew Point: 20F; Relative Humidity: 69%
Wind: N @ 11G18 kts
Sea-level pressure: 1023.6 mb; 30.23 in. Hg: falling then rising
Visibility: 70 miles
6-hr Max temp: 32F
6-hr Min temp: 29F
24-hr Precip:  0.00 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 CLR 70 236/29/20/3611G18/023/ FEW SC NE-E-SE/ 8/500
50007 10032 20029

10 A.M.
Weather: Clear
Temperature: 37F; Dew Point: 19F; Relative Humidity: 48%
Wind: N @ 7G15 kts
Sea-level pressure: 1020.8 mb; 30.14 in. Hg: falling then rising
Visibility: 85 miles
3-hr Precip:  0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 CLR 85 239/37/19/3607G15/024/ 8/000 50003

1 P.M.
Weather: Clear
Temperature: 43F, Dew point: 12F; Relative Humidity: 28%
Wind: N @ 10G23 kts
Sea-level pressure: 1023.1 mb; 30.21 in Hg: falling, then steady
Visibility: 90 miles
6-hr Max temp: 44F
6-hr Min temp: 29F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 CLR 90 231/43/12/3610G23/021/ 8/000 56008 10044 20029

————————————————————–

SUMMARY FOR THURSDAY, DECEMBER 8, 2022

TEMPERATURE (DEGREES F)
MAX…….53   NORMAL…..42
MIN…….33   NORMAL…..27
MEAN……43   NORMAL…..35

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……..+8
TOTAL DEPARTURE FOR THE MONTH………………..+46 [+5.6 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………22  DEPARTURE……..-8
TOTAL HEATING UNITS FOR THE MONTH…………..187  DEPARTURE…….-47
TOTAL HEATING UNITS FOR THE SEASON…………1156  DEPARTURE……-282
TOTAL HEATING UNITS LAST SEASON TO DATE…….1224  DEPARTURE…….-68

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….36 NNW @ 11:32 A.M.
VECTOR #2 (Instantaneous)..39     @ 11:47 A.M.
DAVIS #2 ………………32 NNW @  9:27 A.M.
RMY #2 (Instantaneous)…..39 NNW @  9:17 A.M.
VECTOR #1……OUT OF SERVICE D/T RENOVATIONS
DAVIS #1…….OUT OF SERVICE D/T RENOVATIONS
RMY #1………OUT OF SERVICE D/T RENOVATIONS
MERLIN………OUT OF SERVICE D/T RENOVATIONS

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………23 NNW @ 12:12 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..24     @ 12:12 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………23 N   @  6:21 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..23 N   @  6:20 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE….OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE RMY #1 AVERAGE……OUT OF SERVICE D/T RENOVATIONS

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….13.9 NNW [334 total miles] VECTOR #2……………..13.9
DAVIS #2………………13.7 NNW
RMY #2………………..13.7 NNW
RMY #1……….OUT OF SERVICE D/T RENOVATIONS
VECTOR #1…….OUT OF SERVICE D/T RENOVATIONS
DAVIS #1……..OUT OF SERVICE D/T RENOVATIONS

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.18
TOTAL PRECIPITATION FOR THE MONTH…………..1.25 DEPARTURE…..-0.18
TOTAL PRECIPITATION FOR THE YEAR…………..37.90 DEPARTURE….-11.58

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.4
TOTAL SNOWFALL FOR THE MONTH………………..0.0 DEPARTURE……-2.2
TOTAL SNOWFALL FOR THE SEASON (2022-2023)…..TRACE DEPARTURE……-4.7

————————————————————–

PRELIMINARY CLIMATE SUMMARY FOR DECEMBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN)/SUN(%)/PEAK GUST/AERO/RMY GUST
AERO: Aerovane wind recording system 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
M:    Missing data

12/1  40/30/35/-2/0.00/0.0/520/93         54 NW   AERO N/A    RMY 60
12/2  44/27/36/-1/0.00/0.0/535/96         24 SSW  AERO N/A    RMY 25
12/3  57/36/47/+11/0.31/0.0/000/00        54 SSW  AERO N/A    RMY 57
12/4  41/30/36/0/0.00/0.0/355/64          39 WNW  AERO N/A    RMY 41
12/5  48/29/39/+3/0.00/0.0/454/82         32 SSW  AERO N/A    RMY 32
12/6  54/38/46/+11/0.09/0.0/000/00        30 SSE  AERO N/A    RMY 31
12/7  56/46/51/+16/0.85/0.0/…/..        39 SSE  AERO N/A    RMY 39
12/8  53/33/43/+8/0.00/0.0/…/..         36 NNW  AERO N/A    RMY 39

12/9 The low since midnight is 29F, the daily normal low is 27F

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

RECORDS FOR DECEMBER 9
HIGH 68 IN 1966
LOW -14 IN 1902
PRECIP 3.23 INS. IN 2014
SNOWFALL 10.8 INS. IN 2005
PEAK GUST 66 SE IN 1973

RECORDS FOR DECEMBER 10
HIGH 62 IN 1946
LOW -6 IN 1902
PRECIP 1.67 INS. IN 1907
SNOWFALL 6.0 INS. IN 1905
PEAK GUST 66e SW IN 1940

TODAY’S REPORT PREPARED BY: Benjamin Turner / Matt Douglas

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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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§ 05

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