Monday, January 30, 2023

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

MONDAY, JANUARY 30, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0700E
SUNSET:  1655E

A MIX OF SUN AND CLOUDS TODAY, CONTINUED QUITE MILD…

All told, not a bad day today at all. There has been an interplay
of sunny periods and cloudy periods. Temperatures are once again
on the mild side reaching the upper 40s and low 50s across the
area. The one difference today from yesterday, is the lack of
wind. This is helping to make it feel that much nicer out there.

Much like yesterday, temperatures are significantly above normal,
with the high so far nearly 15 degrees above normal, and low this
morning was a solid 19 degrees above normal.

As mentioned, there isn’t much in the way of wind today. The
average speed for the day so far is around 9mph. The peak gust so
far is only 18mph.

Visibility has been in the 50-60 mile range all day with a bit of
haziness.

The high so far today is 49F degrees, which is 14 degrees above
the normal maximum of 35F. 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: Thin broken cirrus, few stratocumulus offshore distant
NNE-NE
Temperature: 36F; Dew Point: 32F; Relative Humidity: 85%
Wind: W @ 9 kts
Sea-level pressure: 1021.9 mb; 30.18 in. Hg: rising, then more slowly
Visibility: 50 miles, hazy
6-hr Max temp: 41F
6-hr Min temp: 36F
24-hr Precip:  Trace
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 E250 -BKN 50 219/36/32/2809/018/ FEW SC OFFSHR DSNT
NNE-NE HAZY/ 8/501 51017 70000 10041 20036

10 A.M.
Weather: Broken cirrostratus, thin broken cirrus, few stratocumulus
distant NW-NNE, few altocumulus distant W, virga ESE-SSW
Temperature: 41F; Dew Point: 32F; Relative Humidity: 70%
Wind: WNW @ 4 kts, wind light
Sea-level pressure: 1022.7 mb; 30.20 in. Hg: rising, then more slwoly
Visibility: 60 miles
3-hr Precip:  0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 E220 BKN 250 -BKN 60 227/41/32/3004/020/ FEW SC DSNT
NW-NNE FEW AC DSNT W VIRGA ESE-SSW WND LGT/ 8/578 51008

1 P.M.
Weather: Broken stratocumulus, thin broken cirrus
Temperature: 47F; Dew Point: 33F; Relative Humidity: 58%
Wind: NNW @ 5 kts, wind light
Sea-level pressure: 1020.4 mb; 30.13 in. Hg: rising, then falling
Visibility: 60 miles
6-hr Max temp: 48F
6-hr Min temp: 36F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 E45 BKN 250 -BKN 60 204/47/33/3305/013/ WND LGT/
8/501 58023 10048 20036

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SUMMARY FOR SUNDAY, JANUARY 29, 2023

TEMPERATURE (DEGREES F)
MAX…….49   NORMAL…..34
MIN…….36   NORMAL…..17
MEAN……43   NORMAL…..26

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……..+17
TOTAL DEPARTURE FOR THE MONTH……………….+256 [+8.6 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…………..856  DEPARTURE……-259
TOTAL HEATING UNITS FOR THE SEASON…………2766  DEPARTURE……-559
TOTAL HEATING UNITS LAST SEASON TO DATE…….3043  DEPARTURE……-277

PEAK WIND GUST (MPH):
420C (Official)…………33 S   @ 12:44 P.M.
VECTOR #2 (1-Sec)……….36     @  2:31 P.M.
DAVIS #2 ………………46 S   @ 12:42 P.M.
RMY #2 (Instantaneous)…..38 SW  @  5:01 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………………29 S   @ 12:46 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..28     @ 12:46 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………32 S   @ 12:46 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..28 S   @ 12:46 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…….12.9 SSW [309 total miles] VECTOR #2……………..13.4
DAVIS #2………………13.4 SSW
RMY #2………………..13.6 SSW
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…….TRACE DEPARTURE…..-0.14
TOTAL PRECIPITATION FOR THE MONTH…………..6.68 DEPARTURE…..+2.45
TOTAL PRECIPITATION FOR THE YEAR……………6.68 DEPARTURE…..+2.45

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.6
TOTAL SNOWFALL FOR THE MONTH……………….11.4 DEPARTURE……-5.8
TOTAL SNOWFALL FOR THE SEASON (2022-2023)……14.1 DEPARTURE…..-18.2

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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/T/…/..          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  49/36/43/+17/T/0.0/…/..           33 S    VEC1 N/A    RMY 38

1/30 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 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

RECORDS FOR JANUARY 31
HIGH 58F IN 1947, 2013
LOW -12F IN 1920
PRECIP 1.03 INS. IN 1914
SNOWFALL 9.0 INS. IN 1898
PEAK GUST 75 MPH NW IN 1974

TODAY’S REPORT PREPARED BY: Matt Douglas