Sunday, February 20, 2022

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

SUNDAY, FEBRUARY 20, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0635E
SUNSET:  1722E

PARTLY CLOUDY WITH GREAT VISIBILITY FOLLOWING YESTERDAY’S
SNOW….

Today we measured 0.2 inches of snow and 0.02 inches of
liquid. Ice cover on the ponds is around half after the
mix of weather extremes we’ve encountered lately.

Wind is light and westerly with average speeds below
10 mph. Yesterday was breezy with a max gust of almost
50 mph.

Average visibility was great at 80 miles.

The high so far today is 27F, 11 degrees below the normal
high of 38F. The low since midnight is 11F, which is 9 degrees
below the normal minimum of 20F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Clear, few cirrostratus
Temperature: 13F; Dew Point: 1F; Relative Humidity: 60%
Wind: NW @ 10G16 kts
Sea-level pressure: 1029.3 mb; 30.40 in. Hg: rising, then
more slowly
Visibility: 80 miles
6-hr Max temp: 17F
6-hr Min temp: 11F
24-hr Precip:  0.02 ins.
24-hr Snowfall: 0.2 ins.
Snow Depth: Trace
BHO SA 1155 CLR 80 293/13/1/3110G16/040/ FEW CS ALQDS NEW SNW
PST 24 HRS 0.2 INS/ 8/005 4/000 51042 70002 10017 20011

10 A.M.
Weather: Broken cirrostratus
Temperature: 19F; Dew Point: 1F; Relative Humidity: 45%
Wind: NW @ 11G17 kts
Sea-level pressure: 1030.6 mb; 30.44 in Hg: falling then rising
Visibility: 80 miles
3-hr Precip:  0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 250 BKN 80 306/19/1/3110G17/044/ 8/006 50013

1 P.M.
Weather: Broken altocumulus and cirrus
Temperature: 27F, Dew point: 9F; Relative Humidity: 46%
Wind: W @ 5 kts, wind light
Sea-level pressure: 1028.8 mb; 30.38 in Hg: falling, then more
rapidly
Visibility: 80 miles
6-hr Max temp: 27F
6-hr Min temp: 12F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: Trace
BHO SA 1755 170 BKN 250 BKN 80 288/27/9/2705/038/ WND LGT/ 8/051
4/000 58018 10027 20012

SUMMARY FOR SATURDAY, FEBRUARY 19, 2022

TEMPERATURE (DEGREES F)
MAX…….37     NORMAL…..38
MIN…….15     NORMAL…..20
MEAN……26     NORMAL…..29

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..-3
TOTAL DEPARTURE FOR THE MONTH……………………..+83 [+4.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY……………39  DEPARTURE……..+3
TOTAL HEATING UNITS FOR THE MONTH…………..632  DEPARTURE…….-83
TOTAL HEATING UNITS FOR THE SEASON…………3773  DEPARTURE……-345
TOTAL HEATING UNITS LAST SEASON TO DATE…….3762  DEPARTURE…….+11

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….56 WNW @  9:36 P.M.
AEROVANE……………….53 WNW @  9:37 P.M.
VECTOR #2 (Instantaneous)..63     @  9:36 P.M.
DAVIS #2 ………………50 WNW @  6:24 P.M.
RMY #2 (Instantaneous)…..61 WNW @  9:36 P.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………………37 WNW @  6:25 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..39     @  6:25 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………39 WNW @  6:25 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..39 WNW @  6:25 P.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…….15.9 WNW [382 total miles] VECTOR #2……………..16.2
DAVIS #2………………18.2 W
RMY #2………………..16.2 W
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…….0.02  DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH………….3.85  DEPARTURE…..+1.24
TOTAL PRECIPITATION FOR THE YEAR…………..8.44  DEPARTURE…..+1.33

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………….0.2  DEPARTURE……-0.4
TOTAL SNOWFALL FOR THE MONTH……………….9.9  DEPARTURE……-2.6
TOTAL SNOWFALL FOR THE SEASON (2021-2022)…..58.0  DEPARTURE…..+11.8

PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 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

2/01  31/16/24/-2/T/0.2/018/03            19 NNE AERO 18 NNE RMY 19
2/02  44/31/38/+12/T/0.0/096/16           20 SSE AERO 21 SSE RMY 20
2/03  47/36/42/+16/0.16/0.0/000/00        27 SSW AERO 28 SSW RMY 28
2/04  49/19/34/+8/1.53/0.7/000/00         35 NNE AERO 37 NNE RMY 38
2/05  21/11/16/-11/0.01/0.2/251/41        25 NW  AERO 25 NW  RMY M
2/06  27/5/16/-11/0.00/0.0/570/93         20 NNW AERO 21 NNW RMY M
2/07  41/21/31/+4/0.59/0.2/000/00         25 ESE AERO 23 ESE RMY 25
2/08  39/30/35/+8/0.27/0.0/006/01         33 W   AERO 32 WNW RMY 34
2/09  42/24/33/+6/0.00/0.0/608/98         30 WNW AERO 29 WNW RMY 31
2/10  50/31/41/+14/0.00/0.0/312/50        36 W   AERO 37 SW  RMY 38
2/11  52/32/42/+15/0.00/0.0/569/91        32 S   AERO 31 S   RMY 34
2/12  59/35/47/+19/0.00/0.0/433/69        50 W   AERO 46 W   RMY 48
2/13  35/22/29/+1/0.41/5.7/000/00         26 WNW AERO 21 WNW RMY 26
2/14  22/6/14/-14/0.13/2.7/…/..         43 WNW AERO 40 WNW RMY 43
2/15  25/2/14/-14/0.00/0.0/…/..         31 W   AERO 28 W   RMY 31
2/16  43/16/30/+2/0.00/0.0/…/..         49 S   AERO 51 S   RMY 52
2/17  59/43/51/22/…/0.0/…/..          49 SW  AERO 48 SW  RMY 53
2/18  59/21/40/+11/…./0.0/…/..        58 SW  AERO 58 S   RMY 60
2/19  37/15/26/-3/0.02/0.2/…/..         56 WNW AERO 53 WNW RMY 54 TSTM

2/20   The low since midnight is 15F, the daily normal low is 20F

DAILY RECORDS FOR FEBRUARY 2022

2/12/22: DAILY RECORD HIGH MAXIMUM TEMPERATURE OF 59F,
SURPASSES PREVIOUS RECORD OF 56F SET IN 1999

2/17/22: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 43F,
SURPASSES PREVIOUS RECORD OF 38F SET IN 1981

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

RECORDS FOR FEBRUARY 20
HIGH 68F IN 2018
LOW -4F IN 1966
PRECIP 1.90 INCHES IN 1934
SNOWFALL 15.0 INCHES IN 1921,1934
PEAK GUST 78 MPH NW IN 1972

RECORDS FOR FEBRUARY 21
HIGH 70F IN 2018
LOW -6F IN 1950
PRECIP 2.42 INCHES IN 1898
SNOWFALL 9.0 INCHES IN 1929
PEAK GUST 72 MPH WNW IN 1967

TODAY’S REPORT PREPARED BY: Benjamin Turner