Sunday, January 29, 2023

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

SUNDAY, JANUARY 29, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0701E
SUNSET:  1654E

CLOUDY, MILD, AND BREEZY HERE ON BLUE HILL TODAY…

Once again clouds were the theme today with only a little bit
of sunshine recorded this morning. On the bright side,
temperatures have warmed nicely into the upper 40s. Today
will be another significantly above normal day as the high
is a good 15 degrees above normal, and low this morning was
a solid 19 degrees above normal.

The one thing today that may be a negative, despite the mild
temperatures, is the wind. Winds have been quite gusty late
this morning and through the afternoon. Gusts between 25-35mph
have been common. The average speed for the day thus far is
around 12mph. Of course the wind is making it feel chillier
than it really is.

Visibility has improved since this morning, when it was only
around 25 miles with haziness. It has improved to around 60
miles by the 1pm observation.

The high so far today is 49F degrees, which is 15 degrees above
the normal maximum of 34F. The low since midnight of 36F degrees,
which is 19 degrees above the normal minimum of 17F.

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Today’s Observations:

7 A.M.
Weather: Scattered altocumulus castellanus, thin broken cirrus
Temperature: 36F; Dew Point: 31F; Relative Humidity: 80%
Wind: S @ 5 kts, wind light
Sea-level pressure: 1027.9 mb; 30.35 in. Hg: falling, then rising
Visibility: 25 miles, hazy
6-hr Max temp: 40F
6-hr Min temp: 36F
24-hr Precip:  0.00 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 95 SCT E250 -BKN 25 279/36/31/1905/035/ HAZY WND LGT/
8/081 55000 10040 20036

10 A.M.
Weather: Broken altocumulus, thin broken cirrus
Temperature: 43F; Dew Point: 37F; Relative Humidity: 80%
Wind: S @ 10 kts
Sea-level pressure: 1026.0 mb; 30.30 in. Hg: falling, then more rapidly
Visibility: 40 miles, hazy
3-hr Precip:  0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 E85 BKN 250 -BKN 40 260/43/37/1910/030/ THN K LYR ALG
HRZN ALQDS HAZY/ 8/071 58019

1 P.M.
Weather: Broken altocumulus, overcast cirrostratus
Temperature: 48F; Dew Point: 36F; Relative Humidity: 62%
Wind: SSW @ 19G28 kts, peak wind S 34 mph at 12:44 P.M.
Sea-level pressure: 1021.8 mb; 30.17 in. Hg: falling, then more rapidly
Visibility: 60 miles
6-hr Max temp: 49F
6-hr Min temp: 36F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 E120 BKN 220 OVC 60 218/48/36/2019G28/017/ PK WND 1929/44/
8/077 58042 10049 20036

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SUMMARY FOR SATURDAY, JANUARY 28, 2023

TEMPERATURE (DEGREES F)
MAX…….48   NORMAL…..34
MIN…….29   NORMAL…..17
MEAN……39   NORMAL…..26

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……..+13
TOTAL DEPARTURE FOR THE MONTH……………….+239 [+8.3 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………26  DEPARTURE…….-13
TOTAL HEATING UNITS FOR THE MONTH…………..834  DEPARTURE……-242
TOTAL HEATING UNITS FOR THE SEASON…………2744  DEPARTURE……-542
TOTAL HEATING UNITS LAST SEASON TO DATE…….2996  DEPARTURE……-252

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….38 W   @ 11:32 A.M.
VECTOR #2 (Instantaneous)..40     @  9:23 A.M.
DAVIS #2 ………………36 SW  @  9:23 A.M.
RMY #2 (Instantaneous)…..40 W   @ 11:32 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………………26 W   @ 11:35 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..25     @ 11:34 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………26 W   @ 11:34 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..25 SW  @  9:24 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…….13.8 W [332 total miles] VECTOR #2……………..14.4
DAVIS #2………………14.3 SW
RMY #2………………..14.5 SW
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…..-0.14
TOTAL PRECIPITATION FOR THE MONTH…………..6.68 DEPARTURE…..+2.59
TOTAL PRECIPITATION FOR THE YEAR……………6.68 DEPARTURE…..+2.59

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.7
TOTAL SNOWFALL FOR THE MONTH……………….11.4 DEPARTURE……-5.2
TOTAL SNOWFALL FOR THE SEASON (2022-2023)……14.1 DEPARTURE…..-17.6

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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  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/+17/0.85/…/…/..        52 S    VEC1 N/A    RMY 54
1/27  41/25/33/+7/0.00/0.0/…/..         31 WNW  VEC1 N/A    RMY 29
1/28  48/29/39/+13/0.00/0.0/…/..        38 W    VEC1 N/A    RMY 40

1/29 The low since midnight is 36F, 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 29
HIGH 66F IN 2002
LOW -11F IN 1888
PRECIP 1.79 INS. IN 2022
SNOWFALL 21.7 INS. IN 2022
PEAK GUST 72 MPH NW IN 1973

RECORDS FOR JANUARY 30
HIGH 60F IN 1914
LOW -8F IN 1948
PRECIP 1.12 INS. IN 1925
SNOWFALL 6.5 INS. IN 1986
PEAK GUST 76 MPH WNW IN 1962

TODAY’S REPORT PREPARED BY: Matt Douglas