Monday, January 31, 2022

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

MONDAY, JANUARY 31, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0659E
SUNSET:  1657E

INCREASING HIGH CLOUDS, OTHERWISE TRANQUIL AND COLD….

Not a bad day today all told with increasing high thin cirrus clouds,
but still a good deal of sunshine. The wind has been light all day
which is helping a lot in terms of it not feeling so cold. Plus the
temperatures themselves have risen to the upper 20s and low 30s. It’s
amazing how relative things can be. After spending a couple of days
in the teens and low 20s, the current values feel rather pleasant.
The higher sun angle helps as well.

As mentioned, the wind has been light today, generally averaging
around 9mph. The peak gust for the day has only been 17mph so far.

Visibility isn’t as good as it was yesterday, starting the day around
70 miles at the 7 A.M. observation, but dipping back to around 60
miles by 10 A.M. and holding at that value into this afternoon.

The high so far today is 29F, this is 6 degrees below the normal
high of 35F. The low since midnight is 8F, which is 9 degrees
below the normal minimum of 17F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Clear, few stratocumulus offshore distant NE-SE-SSW
Temperature: 10F; Dew Point: 0F; Relative Humidity: 64%
Wind: NW @ 8 kts
Sea-level pressure: 1025.5 mb; 30.28 in. Hg: Rising, then more slowly
Visibility: 70 miles
6-hr Max temp: 11F
6-hr Min temp: 8F
24-hr Precip:  0.00 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 15 ins.
BHO SA 1155 CLR 70 255/10/0/3108/028/ FEW SC OFFSHR DSNT NE-SE-SSW/
8/500 4/015 51021 10011 20008

10 A.M.
Weather: Thin scattered cirrus, few stratocumulus offshore distant NE-SE
Temperature: 19F; Dew Point: 3F; Relative Humidity: 50%
Wind: W @ 6 kts, wind light
Sea-level pressure: 1027.9 mb; 30.35 in Hg: Rising, then more slowly
Visibility: 60 miles
3-hr Precip:  0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 250 -SCT 60 279/19/3/2706/035/ FEW SC OFFSHR DSNT NE-SE
WND LGT/ 8/501 51024

1 P.M.
Weather: Thin broken cirrus, few stratocumulus offshore distant NE-ESE
Temperature: 28F, Dew point: 8F; Relative Humidity: 43%
Wind: NW @ 6kts, wind light
Sea-level pressure: 1027.5mb; 30.34 in Hg: Steady, then falling
Visibility: 60 miles
6-hr Max temp: 29F
6-hr Min temp: 10F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 15 ins.
BHO SA 1755 250 -BKN 60 275/28/8/3206/034/ FEW SC OFFSHR DSNT NE-ESE
WND LGT/ 8/501 4/015 58004 10029 20010

SUMMARY FOR SUNDAY, JANUARY 30, 2022

TEMPERATURE (DEGREES F)
MAX…….21     NORMAL…..35
MIN……..4     NORMAL…..17
MEAN……13     NORMAL…..26

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..-13
TOTAL DEPARTURE FOR THE MONTH……………………..-58 [-2.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY……………52  DEPARTURE…….+13
TOTAL HEATING UNITS FOR THE MONTH………….1209  DEPARTURE…….+55
TOTAL HEATING UNITS FOR THE SEASON…………3095  DEPARTURE……-269
TOTAL HEATING UNITS LAST SEASON TO DATE…….2992  DEPARTURE……+103

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….39 NW  @  3:35 A.M.
AEROVANE……………….41 WNW @  2:57 A.M.
VECTOR #2 (Instantaneous)..41     @  3:35 A.M.
DAVIS #2 ………………37 WNW @  3:35 A.M.
RMY #2 (Instantaneous)…..40 NW  @  3:35 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………………27 WNW @  3:46 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..27     @  2:58 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………27 NW  @  2:58 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..27 WNW @  2:58 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…..16.2 WNW [388 total miles] VECTOR #2……………16.7
DAVIS #2…………….16.7 NW
RMY #2………………16.6 WNW
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…….0.00  DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH………….4.59 DEPARTURE……+0.23
TOTAL PRECIPITATION FOR THE YEAR…………..4.59  DEPARTURE…..+0.23

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………….0.0  DEPARTURE……-0.7
TOTAL SNOWFALL FOR THE MONTH………………45.4  DEPARTURE…..+27.5
TOTAL SNOWFALL FOR THE SEASON (2021-2022)…..48.1  DEPARTURE…..+15.1

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/-2/0.03/0.5/379/65         22 N   AERO 20 N   RMY 22
1/25  39/23/31/+5/0.03/0.3/129/22         27 WNW AERO 25 WNW RMY 26
1/26  24/9/17/-9/0.00/0.0/582/99          25 N   AERO 25 N   RMY 25
1/27  25/3/14/-12/0.00/0.0/589/100        26 SSW AERO 26 SSW RMY 27
1/28  33/21/27/1/0.05/0.5/000/00          26 NNE AERO 28 SW  RMY 28
1/29  28/7/18/-8/1.79/27.1/000/00         55 N   AERO 58 N   RMY 58
1/30  21/4/13/-13/0.00/0.0/590/99         39 NW  AERO 41 WNW RMY 40

1/31 The low since midnight is 8F, 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

1/29/22: DAILY RECORD SNOWFALL OF 27.1 INS,
SURPASSES THE PREVIOUS RECORD OF 8 IN IN 1943

DAILY RECORD PRECIP OF 1.79 INS,
SURPASSES THE PREVIOUS RECORD OF 1.48 INS IN 1973

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

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

RECORDS FOR FEBRUARY 1
HIGH 65F IN 1989
LOW -9F IN 1920
PRECIP 1.86 INS. IN 2021
SNOWFALL 12.7 INS. IN 2021
PEAK GUST 66e MPH SSW IN 1951

TODAY’S REPORT PREPARED BY: Matt Douglas