Tuesday, January 25, 2022

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

TUESDAY, JANUARY 25, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0704E
SUNSET:  1649E

A BIT MORE SNOW LAST NIGHT, MUCH MILDER TODAY….

A period of light snow moved through the region again last night,
this time leaving 0.8″ of accumulation on the summit. This melted
down to 0.06″ of liquid.

This system was the leading edge of milder air that has moved
into the region today. Despite not getting much in the way of
sunshine today, temperatures have found their way into the upper
30s and low 40s. Enjoy it as much colder air is poised to return
tomorrow.

The wind has been rather light again today, averaging around 10mph.
However speeds will be on the increase as we head into tonight and
through the day tomorrow as cold air advection once again takes
over.

The high so far today is 37F, this is 3 degrees above the normal
high of 34F. The low since midnight is 25F, which is 8 degrees
above the normal minimum of 17F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Sky obscured, vertical visibility 100ft
Temperature: 30F; Dew Point: 30F; Relative Humidity: 100%
Wind: SW @ 10 kts
Sea-level pressure: 1010.8 mb; 29.85 in. Hg: falling then rising
Visibility: 1/16 mile, freezing fog
6-hr Max temp: 30F
6-hr Min temp: 26F
24-hr Precip:  0.06 ins.
24-hr Snowfall: 0.8 ins.
Snow Depth:  2 inches
BHO SA 1155 X W1 1/16ZF 108/30/30/2210/985/ TOTAL NEW SNW PST 24 HRS
0.8 INS/ 8//// 4/002 55000 6001/ 70006 10030 20026

10 A.M.
Weather: Overcast stratocumulus, few breaks in overcast distant W and N
Temperature: 33F; Dew Point: 30F; Relative Humidity: 88%
Wind: W @ 8 kts
Sea-level pressure: 1012.3 mb; 29.89 in Hg; rising, then more radpily
Visibility: 10 miles, thin fog
3-hr Precip:  0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 E45 OVC 10 123/33/30/2608/989/ FEW BINOVC DSNT W AND N
THN F ALDS/ 8/5// 53015

1 P.M.
Weather: Scattered stratocumulus, overcast altocumulus
Temperature: 36F, Dew point: 28F; Relative Humidity: 72%
Wind: W @ 6 kts, wind light
Sea-level pressure: 1012.0 mb; 29.88 in Hg; rising then falling
Visibility: 30 miles, hazy
6-hr Max temp: 37F
6-hr Min temp: 30F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 1 inch
BHO SA 1755 30 SCT E65 OVC 30 120/36/28/2606/988/ SUN OCNLY DMLY VSBL
HAZY WND LGT/ 8/55/ 4/001 58003 10037 20030

SUMMARY FOR MONDAY, JANUARY 24, 2022

TEMPERATURE (DEGREES F)
MAX…….29     NORMAL…..34
MIN…….19     NORMAL…..17
MEAN……24     NORMAL…..26

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………… -2
TOTAL DEPARTURE FOR THE MONTH………………………-22 [-1.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY……………41  DEPARTURE……. +2
TOTAL HEATING UNITS FOR THE MONTH…………..939  DEPARTURE…….+20
TOTAL HEATING UNITS FOR THE SEASON…………2825  DEPARTURE……-304
TOTAL HEATING UNITS LAST SEASON TO DATE…….2727  DEPARTURE…….+98

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….22 N   @  7:52 A.M.
AEROVANE……………….20 N   @  7:52 A.M.
VECTOR #2 (Instantaneous)..23     @  7:52 A.M.
DAVIS #2 ………………19 N   @  7:53 A.M.
RMY #2 (Instantaneous)…..22 N   @  7:52 A.M.
ASOS………..OUT OF SERVICE D/T RENOVATIONS
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………………14 N   @  7:55 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..14     @  7:53 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………14 N   @  7:53 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..14 N   @  7:53 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE…….OUT OF SERVICE D/T RENOVATIONS
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……6.8 NNW  [164 total miles] VECTOR #2…………….7.6
DAVIS #2……………..7.1 NNE
RMY #2……………….7.6 NW
RMY #1…………..OUT OF SERVICE D/T RENOVATIONS
ASOS…………….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…….0.06  DEPARTURE…..-0.08
TOTAL PRECIPITATION FOR THE MONTH………….2.75  DEPARTURE…..-0.78
TOTAL PRECIPITATION FOR THE YEAR…………. 2.75  DEPARTURE…..-0.78

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………….0.8  DEPARTURE……+0.2
TOTAL SNOWFALL FOR THE MONTH………………17.8  DEPARTURE……+3.9
TOTAL SNOWFALL FOR THE SEASON (2021-2022)…..20.5  DEPARTURE……-8.5

PRELIMINARY CLIMATE SUMMARY FOR JANUARY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/PEAK GUST/AERO/RMY GUST
AERO: Aerovane wind recording system gust
RMY:  R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M:    Missing data

1/01  51/43/47/+18/0.08/0.0/000/00        21 SSE AERO 21 SSE RMY 22
1/02  48/29/39/+11/0.29/0.0/000/00        35 NW  AERO 36 NW  RMY 35
1/03  29/18/24/-4/0.00/0.0/000/00         31 NNW AERO 30 N   RMY 30
1/04  30/12/21/-7/0.00/0.0/546/99         25 S   AERO 24 S   RMY 25
1/05  49/25/37/+9/0.21/0.0/000/00         45 S   AERO 48 S   RMY 47
1/06  40/27/34/+6/0.00/0.0/316/57         36 WNW AERO 36 WNW RMY 36
1/07  28/17/23/-4/0.78/15.7/000/00        39 WNW AERO 38 WNW RMY 39
1/08  26/11/19/-8/0.00/0.0/556/100        34 WNW AERO 32 WNW RMY 34
1/09  41/19/30/+3/0.01/T/017/03           50 SW  AERO 51 SW  RMY 53
1/10  36/17/27/0/T/T/469/84               44 WNW AERO 43 WNW RMY 46
1/11  17/4/11/-16/T/0.1/560/100           36 NW  AERO 37 NW  RMY 35
1/12  40/5/23/-4/42/0.00/0.0/533/95       43 SSW AERO 44 SSW RMY 44
1/13  45/28/37/+11/0.00/0.0/332/59        22 SW  AERO 22 SW  RMY 22
1/14  38/12/25/-1/0.00/0.0/000/00         44 NW  AERO 41 N   RMY 43
1/15  13/1/7/-19/0.00/0.0/470/83          40 NW  AERO 39 NW  RMY 40
1/16  31/0/16/-10/0.00/0.0/488/86         29 ESE AERO 28 ESE RMY 30
1/17  46/31/39/+13/1.14/0.3/119/21        65 ESE AERO 74 ESE RMY 72
1/18  32/17/25/-1/0.00/0.0/446/78         46 WNW AERO 44 WNW RMY 45
1/19  44/16/30/+4/0.00/0.0/309/54         50 SSW AERO 53 SSW RMY 51
1/20  38/16/27/+1/0.17/0.6/058/10         34 N   AERO 35 N   RMY 34
1/21  20/6/13/-13/0.00/0.0/467/81         29 NNW AERO 30 NNW RMY 29
1/22  25/9/17/-9/T/0.2/358/62             23 NNW AERO 22 NNW RMY 22
1/23  34/17/26/0/0.01/0.1/331/57          26 WSW AERO 26 WSW RMY 26
1/24  29/19/24/-2/0.03/0.5/…/..         22 N   AERO 20 N   RMY 22

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

DAILY RECORDS FOR JANUARY 2022

1/1/22: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 43F
SURPASSES PREVIOUS RECORD OF 42F SET IN 1966

1/17/22: DAILY RECORD PEAK GUST OF 65 MPH ESE,
SURPASSES THE PREVIOUS RECORD OF 62 MPH S IN 1994

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

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

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

TODAY’S REPORT PREPARED BY: Matt Douglas