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Friday, January 27, 2023

January 27, 2023

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA FRIDAY, JANUARY 27, 2023 ALL TIMES ARE…

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

FRIDAY, JANUARY 27, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0703E
SUNSET:  1652E

BEAUTIFUL CLEAR DAY ON TOP OF BLUE HILL…

After a mostly overcast week the sunshine has finally returned
to Great Blue Hill. Skies have remained clear all day with a
a few altocumulus, and a few distant offshore cumulus in the
morning increasing to scattered cumulus by the 1PM observation.
Visibility was excellent all day between 75-80 miles, and snow
patches were visible on Mt. Monadnock at each observation.

Wind has decreased since yesterday’s peak of 54 MPH @ 2:21 AM.
The wind shifted yesterday morning just after the 7AM observation
from SSW-WNW and has remained WNW throughout the day bringing in
cooler air today. With the sunshine, temperatures have begun to
increase since 7AM and our high so far today of 39F, more seasonable
than our high of 53F yesterday.

The high so far today is 39F, which is 5 degrees above the
normal maximum of 34F. The low since midnight is 25F, which
occurred during our 7am observation and is 8 degrees above
the normal minimum of 17F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Clear, few altocumulus W-NE and SW-SSW, few distant offshore
cumulus NE-E
Temperature: 25F; Dew Point: 20F; Relative Humidity: 81%
Wind: WNW @ 09G12 kts
Sea-level pressure: 1016.6 mb; 30.02 in. Hg: rising unsteadily
Visibility: 75 miles
6-hr Max temp: 31F
6-hr Min temp: 25F
24-hr Precip:  0.01 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 CLR 75 166/25/20/3009/002/ FEW AC W-NE AND SW-SSW FEW
OFFSHR DSNT CU NE-E/ 8/66/ 52024 70001 10031 20025

10 A.M.
Weather: Clear, few altocumulus SW-NE, few distant offshore
cumulus NE-E
Temperature: 33F; Dew Point: 29F; Relative Humidity: 63%
Wind: WNW @ 9G15 kts
Sea-level pressure: 1019.6 mb; 30.10 in. Hg: rising unsteadily
Visibility: 80 miles
3-hr Precip:  0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 CLR 80 196/33/29/3013G15/010/ FEW AC SW-NE DSNT OFFSHR FEW CU
NE-E/ 8/66/ 52030

1 P.M.
Weather: Scattered Cumulus
Temperature: 39F; Dew Point: 24F; Relative Humidity: 54%
Wind: NW @ 8G14 kts
Sea-level pressure: 1018.6 mb; 30.08 in. Hg: falling unsteadily
Visibility: 80 miles
6-hr Max temp: 39F
6-hr Min temp: 25F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 50 SCT 80 186/39/24/3108G14/008/ 8/6// 57010 10039 20025

————————————————————–

SUMMARY FOR THURSDAY, JANUARY 26, 2023

TEMPERATURE (DEGREES F)
MAX…….53   NORMAL…..34
MIN…….33   NORMAL…..17
MEAN……43   NORMAL…..26

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……..+17
TOTAL DEPARTURE FOR THE MONTH……………….+219 [+8.4 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………22  DEPARTURE…….-17
TOTAL HEATING UNITS FOR THE MONTH…………..776  DEPARTURE……-222
TOTAL HEATING UNITS FOR THE SEASON…………2686  DEPARTURE……-522
TOTAL HEATING UNITS LAST SEASON TO DATE…….2907  DEPARTURE……-221

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….54 S   @ 02:21 A.M.
VECTOR #2 (Instantaneous)..58     @ 02:21 A.M.
DAVIS #2 ………………65 S   @ 03:02 A.M.
RMY #2 (Instantaneous)…..56 S   @ 02:21 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………………42 S   @ 02:22 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..39     @ 03:25 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………43 S   @ 02:16 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..40 S   @ 03:25 A.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…….20.6 WNW [494 total miles] VECTOR #2……………..17.0
DAVIS #2………………21.0 WSW
RMY #2………………..16.8 WNW
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……..0.01 DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH…………..6.68 DEPARTURE…..+2.87
TOTAL PRECIPITATION FOR THE YEAR……………6.68 DEPARTURE…..+2.87

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.5
TOTAL SNOWFALL FOR THE MONTH……………….11.4 DEPARTURE……-3.8
TOTAL SNOWFALL FOR THE SEASON (2022-2023)……14.1 DEPARTURE…..-16.2

————————————————————–

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  30/26/28/+2/0.22/2.7/000/00         36 NNE  VEC1 N/A    RMY 37
1/17  47/25/36/+10/0.02/0.0/415/73        22 WSW  VEC1 N/A    RMY 23
1/18  49/35/42/+16/0.01/0.0/314/55        37 NW   VEC1 N/A    RMY 38
1/19  38/32/35/+9/0.75/T/000/00           31 NNE  VEC1 N/A    RMY 32
1/20  35/29/32/+6/0.56/1.6/000/00         52 NE   VEC1 N/A    RMY 54
1/21  31/25/28/+2/0.01/0.2/000/00         21 NW   VEC1 N/A    RMY 21
1/22  35/25/30/+4/0.25/0.2/000/00         21 N    VEC1 N/A    RMY 20
1/23  34/27/31/+5/1.18/4.1/000/00         36 NNW  VEC1 N/A    RMY 37
1/24  35/25/20/+4/0.00/0.0/…/..         32 WNW  VEC1 N/A    RMY 32
1/25  42/27/35/+9/0.45/0.1/…/..         40 SSE  VEC1 N/A    RMY 42
1/26  53/33/43/+17/…./../…/..         54 S    VEC1 N/A    RMY 54

1/27 The low since midnight is 25F, the daily normal low is 17F

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

RECORDS FOR JANUARY 27
HIGH 63F IN 1974
LOW -12F IN 1924
PRECIP 1.94 INS. IN 2015
SNOWFALL 25.2 INS. IN 2015 [RECORD FOR MONTH] PEAK GUST 91 MPH SSE IN 1996

RECORDS FOR JANUARY 28
HIGH 59F IN 1916
LOW -9F IN 1888, 1924
PRECIP 2.18 INS. IN 1897
SNOWFALL 15.0 INS. IN 1897
PEAK GUST 78e MPH SSE IN 1977

TODAY’S REPORT PREPARED BY: Kaitlin Geagan

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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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