Thursday, January 26, 2023

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

THURSDAY, JANUARY 26, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0704E
SUNSET:  1650E

HEAVY RAIN OVERNIGHT, SCATTERED SHOWERS TODAY…

Rainfall overnight was heavy, amounting to 1.29 inches by
the 7am observation. A brief period of snow, sleet, and
freezing rain did occur in the evening before the change
to rain, with 0.1″ of snow/sleet accumulating.

Clouds have again been the theme today with scattered
showers moving through. Some of the showers were mixed
with sleet and snow briefly just after the 1pm observation.

Temperatures started the day in the low 50s, but has been
gradually falling as the day goes on, down to around 40F
degrees by the 1pm observation.

The wind has been quite busy today. Before sunrise, it was
out of the south with a peak gust of 52mph occurring just
before 2:30am. A wind shift to the west occurred just before
7:30am, which has been the mean direction since. Frequent
gusts between 30-40mph have been occurring. The average
speed for the day is around 21mph.

The high so far today is 53F, which is 19 degrees above the
normal maximum of 34F. The low since midnight is 40F, which
is 23 degrees above the normal minimum of 17F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Broken stratus fractus, overcast stratus
Temperature: 52F; Dew Point: 52F; Relative Humidity: 100%
Wind: SSW @ 14G23 kts, peak wind SSW 32mph at 6:24 A.M.
Sea-level pressure: 992.7 mb; 29.31 in. Hg: falling, then more rapidly
Visibility: 10 miles, thin fog
6-hr Max temp: 53F
6-hr Min temp: 46F
24-hr Precip:  1.29 ins.
24-hr Snowfall: 0.1 ins.
Snow Depth: 0 ins.
BHO SA 1155 E8 BKN 70 OVC 10 927/52/52/2014G23/931/ THN F ALQDS
R-E55 PK WND 2028/24/ NEW SNW PST 24 HRS 0.1 INS/ 8/7// 58033
6071/ 70129 10053 20046

10 A.M.
Weather: Broken stratus fractus, overcast stratocumulus, few breaks
in overcast distant all quadrants
Temperature: 45F; Dew Point: 43F; Relative Humidity: 95%
Wind: W @ 13G22 kts, peak wind WNW 30mph at 9:17 A.M.
Sea-level pressure: 995.2 mb; 29.39 in. Hg: rising, then more rapidly
Visibility: 70 miles
3-hr Precip:  Trace
3-hr Snowfall: 0.0 ins.
BHO SA 1455 E10 BKN 20 OVC 70 952/45/43/2713G22/939/ FEW BINOVC DSNT
ALQDS PK WND 2926/17/ 8/7// 53025 6000/

1 P.M.
Weather: Broken stratocumulus, overcast nimbostratus, few breaks in
overcast distant ESE-S
Temperature: 40F; Dew Point: 38F; Relative Humidity: 93%
Wind: WNW @ 12G30 kts, peak wind WNW 35mph at 12:53 P.M.
Sea-level pressure: 996.4 mb; 29.42 in. Hg: rising, then more slowly
Visibility: 30 miles, 10 miles E, 80 miles SE-SSW
6-hr Max temp: 52F
6-hr Min temp: 40F
6-hr Precip:  0.01 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 E15 BKN 35 OVC 30 964/40/38/2912G30/942/ FEW BINOVC DSNT
ESE-S RW-B13E24B42E55 VSBY 10 E 80 SE-SSW PK WND 2930/53/ 8/5//
51012 6001/ 10052 20040

————————————————————–

SUMMARY FOR WEDNESDAY, JANUARY 25, 2023

TEMPERATURE (DEGREES F)
MAX…….42   NORMAL…..34
MIN…….27   NORMAL…..17
MEAN……35   NORMAL…..26

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………+9
TOTAL DEPARTURE FOR THE MONTH……………….+202 [+7.9 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………30  DEPARTURE……..-9
TOTAL HEATING UNITS FOR THE MONTH…………..754  DEPARTURE……-204
TOTAL HEATING UNITS FOR THE SEASON…………2664  DEPARTURE……-504
TOTAL HEATING UNITS LAST SEASON TO DATE…….2859  DEPARTURE……-195

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….40 SSE @ 11:54 P.M.
VECTOR #2 (Instantaneous)..43     @ 11:54 P.M.
DAVIS #2 ………………37 SE  @ 11:57 P.M.
RMY #2 (Instantaneous)…..42 SSE @ 11:54 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………………27 SSE @ 11:38 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..27     @ 11:54 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………26 SE  @ 11:57 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..27 SSE @ 11:54 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……. 9.5 SE [229 total miles] VECTOR #2……………..10.2
DAVIS #2………………10.0 SSE
RMY #2………………..10.2 S
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……..1.29 DEPARTURE…..+1.15
TOTAL PRECIPITATION FOR THE MONTH…………..6.67 DEPARTURE…..+3.00
TOTAL PRECIPITATION FOR THE YEAR……………6.67 DEPARTURE…..+3.00

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.1 DEPARTURE……-0.5
TOTAL SNOWFALL FOR THE MONTH……………….11.4 DEPARTURE……-3.1
TOTAL SNOWFALL FOR THE SEASON (2022-2023)……14.1 DEPARTURE…..-15.5

————————————————————–

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 The low since midnight is 40F, 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 26
HIGH 68F IN 1950 [RECORD HIGH TIE FOR MONTH] LOW -5F IN 1920
PRECIP 1.60 INS. IN 1958
SNOW 9.0 INS. IN 1898
WIND 90e MPH SE IN 1978

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

TODAY’S REPORT PREPARED BY: Matt Douglas