Tuesday, January 24, 2023

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

TUESDAY, JANUARY 24, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0705E
SUNSET:  1648E

MODERATE SNOWFALL YESTERDAY AFTERNOON AND EVENING…

Once the precipitation changed to snow yesterday afternoon,
it came down pretty good at times, amounting to 4.1″ by the
time it ended last evening. This is the biggest snowfall of
the season thus far. The monthly total is now up to 11.3″,
and the seasonal total is now 14.0″. Both of which are still
below normal of course, -2.0″ and -14.4″ respectively.

Today has been dry and chilly with even a splash of sunshine
this morning. Unfortunately the clouds are once again
dominating the sky.

Temperatures have only managed to reach the low to mid 30s
here on the summit. With a brisk westerly wind, the wind chill
has been in the 20s all day. Definitely a chilly feeling day.

The wind has been mainly westerly so far today, with an average
speed for the day around 14mph.

The high so far today is 34F, which is equal to the normal
maximum of 34F. The low since midnight is 25F, which is 8
degrees above the normal minimum of 17F.

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Today’s Observations:

7 A.M.
Weather: Overcast stratocumulus, few breaks in overcast distant
NE-SE-S, few lower stratocumulus offshore distant NE-SE
Temperature: 27F; Dew Point: 26F; Relative Humidity: 94%
Wind: W @ 10G17 kts
Sea-level pressure: 1014.4 mb; 29.96 in. Hg: rising, then more rapidly
Visibility: 30 miles, thin fog
6-hr Max temp: 27F
6-hr Min temp: 25F
24-hr Precip:  0.49 ins.
24-hr Snowfall: 4.1 ins.
Snow Depth: 4 ins.
BHO SA 1155 E30 OVC 30 144/27/26/2610G17/996/ FEW BINOVC DSNT
NE-SE-S FEW LWR SC OFFSHR DSNT NE-SE THN F ALQDS NEW SNW PST
24 HRS 4.1 INS/ 8/5// 4/004 53022 70049 10027 20025

10 A.M.
Weather: Broken stratocumulus, thin broken cirrus
Temperature: 31F; Dew Point: 29F; Relative Humidity: 91%
Wind: W @ 9G17 kts
Sea-level pressure: 1015.9 mb; 30.00 in. Hg: rising, then more rapidly
Visibility: 40 miles, thin fog
3-hr Precip:  0.00 ins
3-hr Snowfall: 0.0 ins.
BHO SA 1455 E32 BKN 250 -BKN 40 159/31/29/2609G17/000/ THN F ALQDS/
8/501 53015

1 P.M.
Weather: Overcast stratocumulus, few breaks in overcast all quadrants
Temperature: 33F; Dew Point: 27F; Relative Humidity: 78%
Wind: W @ 12G18 kts
Sea-level pressure: 1016.0 mb; 30.00 in. Hg: rising, then steady
Visibility: 40 miles
6-hr Max temp: 34F
6-hr Min temp: 27F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 3 ins.
BHO SA 1755 E32 OVC 40 160/33/27/2812G18/000/ FEW BINOVC ALQDS/
8/5// 4/003 51001 10034 20027

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SUMMARY FOR MONDAY, JANUARY 23, 2023

TEMPERATURE (DEGREES F)
MAX…….34   NORMAL…..34
MIN…….27   NORMAL…..17
MEAN……31   NORMAL…..26

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………+5
TOTAL DEPARTURE FOR THE MONTH……………….+189 [+8.0 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………34  DEPARTURE……..-5
TOTAL HEATING UNITS FOR THE MONTH…………..689  DEPARTURE……-191
TOTAL HEATING UNITS FOR THE SEASON…………2599  DEPARTURE……-491
TOTAL HEATING UNITS LAST SEASON TO DATE…….2784  DEPARTURE……-185

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….36 NNW @  7:36 P.M.
VECTOR #2 (Instantaneous)..40     @  4:36 A.M.
DAVIS #2 ………………34 NNW @  7:36 P.M.
RMY #2 (Instantaneous)…..37 NE  @  4:40 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………………25 NE  @  4:41 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..25     @  4:53 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………24 NE  @  4:53 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..24 NE  @  4:53 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…….15.0 NNE [360 total miles] VECTOR #2……………..14.9
DAVIS #2………………14.5 NNE
RMY #2………………..14.5 N
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……..0.49 DEPARTURE…..+0.35
TOTAL PRECIPITATION FOR THE MONTH…………..5.38 DEPARTURE…..+1.99
TOTAL PRECIPITATION FOR THE YEAR……………5.38 DEPARTURE…..+1.99

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..4.1 DEPARTURE……+3.5
TOTAL SNOWFALL FOR THE MONTH……………….11.3 DEPARTURE……-2.0
TOTAL SNOWFALL FOR THE SEASON (2022-2023)……14.0 DEPARTURE…..-14.4

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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  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 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 24
HIGH 60F IN 1967
LOW -12F IN 1907
PRECIP 2.40 INS. IN 1935
SNOWFALL 11.3 INS. IN 1935
PEAK GUST 82 MPH S IN 1996

RECORDS FOR JANUARY 25
HIGH 56F IN 2010
LOW -9F IN 1935
PRECIP 2.24 INS. IN 1979
SNOWFALL 12.5 INS. IN 1941
PEAK GUST 81 MPH WNW IN 1972

TODAY’S REPORT PREPARED BY: Matt Douglas