Monday, January 16, 2023

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

MONDAY, JANUARY 16, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0710E
SUNSET:  1638E

ANOTHER OVERCAST DAY, BUT WINTRY WITH PERIODS OF SNOW….

Finally a day snow lovers have been waiting for. Periods of
mainly light snow have been occurring here on the hill off
and on since yesterday. This morning a good burst of snow
moved through between 7-10am, preceded by a brief period of
sleet. This burst of snow dropped 1.8 inches. Another burst
of snow began just before the 1pm observation. An additional
0.3″ of snow fell between 10am and 1pm bringing the total for
the day through that point to 2.1″. Combined with the snow
that fell yesterday, the storm total through 1pm was 3.2 inches,
by far the biggest snow event of the season so far.

Today marks the 5th consecutive day with no sunshine here
at Blue Hill. The percentage of sunshine we’ve recorded for
month, as it stands through yesterday, is only 24%!

In addition to the snow today, winds were gusty this morning,
however they’ve been on the decline as we move through the
afternoon. The average speed for the day thus far is around
14mph. The peak gust was 36mph back around 1:30 this morning.

The high so far today is 30F, which is 4 degrees below
the normal maximum of 34F. The low since midnight is 26F,
which is 8 degrees above the normal minimum of 18F.

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Today’s Observations:

7 A.M.
Weather: Broken stratocumulus, overcast nimbostratus, light sleet
Temperature: 28F; Dew Point: 27F; Relative Humidity: 94%
Wind: N @ 14G29 kts, peak wind N 33mph at 6:53 A.M.
Sea-level pressure: 1011.4 mb; 29.87 in. Hg: falling, then more rapidly
Visibility: 6 miles, 10 miles SSE-SSW, 3 miles W-NNE, fog
6-hr Max temp: 28F
6-hr Min temp: 26F
24-hr Precip:  0.14 ins.
24-hr Snowfall: 1.1 ins.
Snow Depth: 1 in
BHO SA 1155 E15 BKN 20 OVC 6IP-F 114/28/27/0114G29/987/ ZL-E09
IP-E09B50 VSBY 10 SSE-SSW 3 W-NNE PK WND 0129/53/ NEW SNW PST
24 HRS 1.1 INS/ 8/5// 4/001 58009 6003/ 70014 10028 20026
10 A.M.
Weather: Broken stratocumulus, overcast nimbostratus, light snow
Temperature: 29F; Dew Point: 29F; Relative Humidity: 100%
Wind: N @ 9G17 kts
Sea-level pressure: 1010.1 mb; 29.83 in. Hg: falling, then more rapidly
Visibility: 5 miles, fog
3-hr Precip:  0.10 ins
3-hr Snowfall: 1.8 ins
BHO SA 1455 E10 BKN 20 OVC 5S-F 101/29/29/3509G17/983/ NEW SNW
PST 3 HRS 1.8 INS/ 8/5// 58013 6010/

1 P.M.
Weather: Overcast stratus, light snow
Temperature: 29F; Dew Point: 29F; Relative Humidity: 100%
Wind: NNW @ 9G17 kts
Sea-level pressure: 1006.6 mb; 29.72 in. Hg: falling, then more rapidly
Visibility: 3/4 mile, fog
6-hr Max temp: 30F
6-hr Min temp: 28F
6-hr Precip:  0.13 ins
6-hr Snowfall: 2.1 ins
Snow Depth: 3 ins.
BHO SA 1755 E15 OVC 3/4S-F 066/29/29/3309G17/972/ NEW SNW PST
6 HRS 2.1 INS/ 8/6// 4/003 58035 6013/ 10030 20028

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SUMMARY FOR SUNDAY, JANUARY 15, 2023

TEMPERATURE (DEGREES F)
MAX…….33   NORMAL…..34
MIN…….26   NORMAL…..18
MEAN……30   NORMAL…..26

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………+4
TOTAL DEPARTURE FOR THE MONTH……………….+135 [+8.8 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………35  DEPARTURE……..-4
TOTAL HEATING UNITS FOR THE MONTH…………..431  DEPARTURE……-136
TOTAL HEATING UNITS FOR THE SEASON…………2341  DEPARTURE……-436
TOTAL HEATING UNITS LAST SEASON TO DATE…….2457  DEPARTURE……-116

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….45 NNE @ 12:34 P.M.
VECTOR #2 (Instantaneous)..50     @ 12:34 P.M.
DAVIS #2 ………………38 N   @ 12:34 P.M.
RMY #2 (Instantaneous)…..45 NNE @ 12:34 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………………26 NNE @ 10:45 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..26     @ 12:35 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………26 N   @ 12:35 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..24 NNE @  5:52 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…….17.0 NNE [408 total miles] VECTOR #2……………..MISSING
DAVIS #2………………15.8 NNE
RMY #2………………..MISSING DUE TO ICING
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……..0.14 DEPARTURE…..-0.01
TOTAL PRECIPITATION FOR THE MONTH…………..2.42 DEPARTURE…..+0.16
TOTAL PRECIPITATION FOR THE YEAR……………2.42 DEPARTURE…..+0.16

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..1.1 DEPARTURE……+0.5
TOTAL SNOWFALL FOR THE MONTH………………..2.5 DEPARTURE……-6.0
TOTAL SNOWFALL FOR THE SEASON (2022-2023)…….5.2 DEPARTURE…..-18.4

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PRELIMINARY CLIMATE SUMMARY FOR JANUARY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN)/SUN(%)/PEAK GUST/VEC1/RMY GUST
VEC1: Vector #1 1-second gust
RMY:  R.M. Young wind gust recording system (Instantaneous)
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M:    Missing data

1/1   53/38/46/+17/0.04/0.0/412/75        39 WNW  VEC1 N/A    RMY 60
1/2   49/33/41/+13/0.00/0.0/044/08        39 WNW  VEC1 N/A    RMY 39
1/3   48/37/43/+15/0.50/0.0/000/00        23 S    VEC1 N/A    RMY 24
1/4   43/37/40/+12/0.31/0.0/000/00        23 NE   VEC1 N/A    RMY 23
1/5   43/33/38/+10/0.23/0.0/000/00        34 ENE  VEC1 N/A    RMY 37
1/6   35/31/33/+5/0.18/1.0/000/00         19 NNE  VEC1 N/A    RMY 19
1/7   40/30/35/+8/0.00/0.0/105/19         22 NW   VEC1 N/A    RMY 23
1/8   36/20/28/+1/0.00/0.0/517/93         26 NNW  VEC1 N/A    RMY 28
1/9   42/26/34/+7/T/0.1/267/48            27 NW   VEC1 N/A    RMY 27
1/10  41/25/33/6/0.00/0.0/318/57          28 NW   VEC1 N/A    RMY 28
1/11  33/18/26/-1/T/0.1/358/64            19 N    VEC1 N/A    RMY 18
1/12  48/28/38/+11/0.29/0.1/000/00        45 S    VEC1 N/A    RMY 46
1/13  55/36/46/+20/0.62/0.0/000/00        54 SSW  VEC1 N/A    RMY 56
1/14  36/29/33/+7/0.11/T/000/00           30 NNE  VEC1 N/A    RMY M
1/15  33/26/30/+4/0.10/1.2/000/00         45 NNE  VEC1 N/A    RMY 45

1/16 The low since midnight is 26F, the daily normal low is 18F

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

RECORDS FOR JANUARY 16
HIGH 63F IN 1995
LOW -12F IN 2004
PRECIP 1.32 INS. IN 1936
SNOWFALL 14.0 INS. IN 1965
PEAK GUST 79 MPH WNW IN 1960

RECORDS FOR JANUARY 17
HIGH 55F IN 1973,1995
LOW -8F IN 1907,1982
PRECIP 1.43 INS. IN 1956
SNOWFALL 13.4 INS. IN 1956
PEAK GUST 65 MPH ESE IN 2022

TODAY’S REPORT PREPARED BY: Matt Douglas