Wednesday, December 28, 2022

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

WEDNESDAY, DECEMBER 28, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0713E
SUNSET:  1619E

MORE CLOUDS THAN SUN, BUT EVEN MILDER WITH A BRISK WIND….

Despite the lack of sunshine today, we continue to move out
of the arctic air mass that blasted it’s way into the region
over the weekend. Today the temperature has been able to make
it to the upper 30s, but with a brisk wind, which has freshened
this afternoon, the wind chill is still on the chilly side.

The average wind speed for the day is around 11mph with a peak
gust so far of 35mph.

Visibility has been limited all day, only ranging 30-40 miles.

The high so far today is 38F, which is 1 degree above the
normal maximum of 37F. The low since midnight is 22F, which
is equal to the normal minimum of 22F.

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Today’s Observations:

7 A.M.
Weather: Overcast stratocumulus, few breaks in overcast distant
NNE-SSE, higher clouds visible distant NNE-SSE
Temperature: 25F; Dew Point: 16F; Relative Humidity: 68%
Wind: WSW @ 7 kts
Sea-level pressure: 1026.9 mb; 30.32 in. Hg: rising, then falling
Visibility: 40 miles, hazy
6-hr Max temp: 25F
6-hr Min temp: 22F
24-hr Precip:  0.00 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 E45 OVC 40 269/25/16/2407/032/ FEW BINOVC DSNT
NNE-SSE HIER CLDS VSBL DSNT NNE-SSE HAZY/ 8/5// 58001 10025
20022

10 A.M.
Weather: Broken altocumulus, overcast cirrostratus, few breaks
in overcast all quadrants, few stratocumulus distant NE-SE
Temperature: 29F; Dew Point: 20F; Relative Humidity: 69%
Wind: SW @ 11G17 kts
Sea-level pressure: 1027.7 mb; 30.35 in. Hg: rising, then steady
Visibility: 30 miles, hazy
3-hr Precip:  0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 E130 BKN 200 OVC 30 277/29/20/2211G17/035/
FEW BINOVC ALQDS FEW SC DSNT NE-SE HAZY/ 8/577 51008

1 P.M.
Weather: Broken altocumulus, broken cirrostratus, thin broken
cirrus
Temperature: 37F; Dew Point: 24F; Relative Humidity: 59%
Wind: SW @ 14G21 kts
Sea-level pressure: 1024.7 mb; 30.26 in. Hg: falling, then more rapidly
Visibility: 30 miles, hazy
6-hr Max temp: 38F
6-hr Min temp: 25F
24-hr Precip:  0.00 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 E130 BKN 200 BKN 250 -BKN 30 247/37/24/2214G21/026/
HAZY PK WND 2130/02/ 8/075 58030 10038 20025

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SUMMARY FOR TUESDAY, DECEMBER 27, 2022

TEMPERATURE (DEGREES F)
MAX…….34   NORMAL…..37
MIN…….22   NORMAL…..22
MEAN……28   NORMAL…..30

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……..-2
TOTAL DEPARTURE FOR THE MONTH………………..+5 [0.0 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………37  DEPARTURE……..+2
TOTAL HEATING UNITS FOR THE MONTH…………..856  DEPARTURE……..-6
TOTAL HEATING UNITS FOR THE SEASON…………1825  DEPARTURE……-241
TOTAL HEATING UNITS LAST SEASON TO DATE…….1777  DEPARTURE…….+48

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….23 WNW @ 12:56 P.M.
VECTOR #2 (Instantaneous)..25     @ 12:56 P.M.
DAVIS #2 ………………21 W   @ 12:57 P.M.
RMY #2 (Instantaneous)…..22 WNW @ 12:56 P.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………………16 WNW @  3:04 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..17     @ 12:58 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………17 W   @ 12:58 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..17 WNW @ 12:58 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…….8.1 W [194 total miles] VECTOR #2……………..8.9
DAVIS #2………………9.0 W
RMY #2………………..8.8 W
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…..-0.16
TOTAL PRECIPITATION FOR THE MONTH…………..5.51 DEPARTURE…..+0.75
TOTAL PRECIPITATION FOR THE YEAR…………..42.58 DEPARTURE….-10.65

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.5
TOTAL SNOWFALL FOR THE MONTH………………..2.7 DEPARTURE……-7.8
TOTAL SNOWFALL FOR THE SEASON (2022-2023)…….2.7 DEPARTURE…..-10.3

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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/+16/0.85/0.0/000/00        39 SSE  AERO N/A    RMY 39
12/8  53/33/43/+8/0.00/0.0/534/97         36 NNW  AERO N/A    RMY 39
12/9  44/29/37/+3/0.00/0.0/549/100        29 N    AERO N/A    RMY 30
12/10 31/27/29/-5/0.04/0.4/000/00         27 NE   AERO N/A    RMY 26
12/11 30/23/27/-7/0.15/2.1/000/00         25 NNE  AERO N/A    RMY 26
12/12 29/21/25/-9/T/T/395/72              24 N    AERO N/A    RMY 24
12/13 38/19/29/-4/0.00/0.0/547/100        38 NNW  AERO N/A    RMY 38
12/14 35/18/27/-6/T/0.1/546/100           42 NNW  AERO N/A    RMY 44
12/15 40/30/35/+2/0.09/0.0/000/00         40 E    AERO N/A    RMY 41
12/16 42/39/41/+9/1.88/0.0/000/00         47 E    AERO N/A    RMY 48
12/17 42/31/37/+5/0.45/0.1/044/08         37 WNW  AERO N/A    RMY 38
12/18 39/27/33/+1/0.00/0.0/365/67         29 NW   AERO N/A    RMY 28
12/19 39/25/32/0/0.00/0.0/469/86          41 WNW  AERO N/A    RMY 41
12/20 38/25/32/+1/0.00/0.0/544/100        34 NW   AERO N/A    RMY 35
12/21 37/22/30/-1/0.00/0.0/496/91         17 N    AERO N/A    RMY 17
12/22 43/28/36/+5/0.28/0.0/038/07         44 E    AERO N/A    RMY 45
12/23 55/15/35/+4/1.37/T/000/00           74 SE   AERO N/A    RMY 74
12/24 17/6/12/-18/0.00/0.0/529/97         37 WSW  AERO N/A    RMY 39
12/25 25/9/17/-13/0.00/0.0/540/99         29 WSW  AERO N/A    RMY 31
12/26 32/15/24/-6/0.00/0.0/519/95         23 WSW  AERO N/A    RMY 23
12/27 34/22/28/-2/0.00/0.0/246/45         23 WNW  AERO N/A    RMY 22

12/28 The low since midnight is 22F, the daily normal low is 22F

DAILY RECORDS

12/16/2022: NEW PRECIPITATION RECORD OF 1.88 INS,
THIS BEATS THE OLD RECORD OF 1.67 INS SET IN 1960

12/23/2022: NEW PEAK GUST RECORD 74 SE,
REPLACING THE OLD RECORD OF 67 SSE IN 2004

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

RECORDS FOR DECEMBER 28
HIGH 60 IN 1982
LOW -2 IN 1933
PRECIP 2.16 INS. IN 1967
SNOWFALL 9.5 INS. IN 1967
PEAK GUST 89 MPH SSE IN 1983

RECORDS FOR DECEMBER 29
HIGH 72 IN 1984
LOW -19 IN 1933 (RECORD FOR DECEMBER)
PRECIP 1.89 INS. IN 1945
SNOWFALL 18.4 INS. IN 1945
PEAK GUST 95 MPH S IN 1966 (RECORD FOR DECEMBER)

TODAY’S REPORT PREPARED BY: Matt Douglas