Friday, December 2, 2022

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

FRIDAY, DECEMBER 2, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0655E
SUNSET:  1612E

SUNSHINE THROUGH FILTERED CLOUDS, COOL WITH MUCH LESS WIND….

All in all not a bad day today following a chilly start. Readings
early this morning dropped into the mid-upper 20s, but with
light wind, it wasn’t too hard to take. Sunshine has been the
theme today with some high thin clouds streaming through with a
tendency toward increasing this afternoon.

Temperatures have rebound into the low to mid 40s. Again with
the light wind and sunshine, it doesn’t feel too bad out there.

The average wind speed for the day so far is only around 10mph.

Visibility has been excellent all day ranging from 70-80 miles.

The high so far today is 44F, which is equal to the normal
maximum of 44F. The low since midnight is 27F, which is 2
degrees below the normal low of 29F.

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PRELIMINARY STATS FOR NOVEMBER 2022

TEMPERATURE, Deg. F
Avg. Max. 55.0 [+4.9] Avg. Min. 37.8 [+4.0] Mean      46.4 [+4.4] 24-hour corrected mean: 45.9

Max. for month: 75F on the 5th
Min. for month: 20F on the 21st

HEATING DEGREE DAYS
Total heating units:    556 [-136] Total for the season:   996 [-235] Total for last season: 1007

COOLING DEGREE DAYS
Total cooling units:    005 [+005] Total for the season:   889 [+212] Total for last season:  717

PRECIPITATION, Inches
Total: 3.39 [-0.92] Greatest in 24 hrs: 0.96 on the 30th

SNOWFALL, Inches
Total: TRACE [-1.8] Greatest in 24 hrs: TRACE on the 15th and 17th

WIND, mph
Avg. uncorrected wind speed: 13.3 mph
Avg. corrected wind speed:   13.6 mph
Prevailing wind direction:    SW [15%] Peak gust and direction:  63 SSE on the 30th

SUNSHINE:
Campbell-Stokes card minutes: 10710 of a possible 17010, or 63%
Astronomical total minutes: 11101 of a possible 17627, or 63%

MFD

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Today’s Observations:

7 A.M.
Weather: Clear, few stratocumulus distant NE-E, few altocumulus
all quadrants, few cirrus all quadrants
Temperature: 28F; Dew Point: 24F; Relative Humidity: 84%
Wind: W @ 9 kts
Sea-level pressure: 1032.9 mb; 30.50 in. Hg: rising, then more rapidly
Visibility: 70 miles
6-hr Max temp: 29F
6-hr Min temp: 27F
24-hr Precip:  0.00 ins.
24-hr Snowfall: 0.0 ins.
BHO SA 1155 CLR 70 329/28/24/2809/050/ FEW SC DSNT NE-E FEW AC ALQDS
FEW CI ALQDS/ 8/551 53023 10029 20027

10 A.M.
Weather: Clear, few stratocumulus distant NE-ESE, few altocumulus
distant W-NW, few cirrus all quadrants
Temperature: 36F; Dew Point: 24F; Relative Humidity: 62%
Wind: WNW @ 3 kts, wind light
Sea-level pressure: 1033.9 mb; 30.53 in. Hg: rising, then falling
Visibility: 80 miles
3-hr Precip:  0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 CLR 80 339/36/24/3003/053/ FEW SC DSNT NE-ESE
FEW AC DSNT W-NW FEW CI ALQDS WND LGT/ 8/551 50010

1 P.M.
Weather: Thin broken cirrus/cirrocumulus, few stratocumulus distant
NE-E
Temperature: 43F, Dew point: 24F; Relative Humidity: 46%
Wind: SW @ 7 kts
Sea-level pressure: 1031.5 mb; 30.46 in Hg: falling, then more rapidly
Visibility: 80 miles
6-hr Max temp: 44F
6-hr Min temp: 28F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
BHO SA 1755 250 -SCT 80 315/43/24/2307/046/ FEW SC DSNT NE-E/
8/509 58024 10044 20028

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SUMMARY FOR THURSDAY, DECEMBER 1, 2022

TEMPERATURE (DEGREES F)
MAX…….40   NORMAL…..45
MIN…….30   NORMAL…..29
MEAN……35   NORMAL…..37

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………-2
TOTAL DEPARTURE FOR THE MONTH…………………-2 [-2.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………30  DEPARTURE……..+2
TOTAL HEATING UNITS FOR THE MONTH……………30  DEPARTURE……..+2
TOTAL HEATING UNITS FOR THE SEASON………….999  DEPARTURE……-233
TOTAL HEATING UNITS LAST SEASON TO DATE…….1035  DEPARTURE…….-36

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….54 NW  @  2:42 A.M.
AEROVANE……………….N/A
VECTOR #2 (Instantaneous)..60     @  2:42 A.M.
DAVIS #2 ………………50 WNW @  2:41 A.M.
RMY #2 (Instantaneous)…..60 NW  @  2:42 A.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………………44 NW  @  2:43 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..41     @  2:43 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………40 WNW @  2:43 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..40 NW  @  2:43 A.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…….17.9 WNW [430 total miles] VECTOR #2……………..18.4
DAVIS #2………………18.7 WNW
RMY #2………………..18.2 WNW
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……..0.00 DEPARTURE…..-0.18
TOTAL PRECIPITATION FOR THE MONTH…………..0.00 DEPARTURE…..-0.18
TOTAL PRECIPITATION FOR THE YEAR…………..37.07 DEPARTURE….-11.58

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.2
TOTAL SNOWFALL FOR THE MONTH………………..0.0 DEPARTURE……-0.2
TOTAL SNOWFALL FOR THE SEASON (2022-2023)…..TRACE DEPARTURE……-2.7

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PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 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

11/1  61/54/58/+11/0.11/0.0/000/00        21 NW   AERO N/A    RMY 21
11/2  68/50/59/+12/0.00/0.0/598/97        29 N    AERO N/A    RMY 30
11/3  67/48/58/+12/0.00/0.0/597/97        24 WSW  AERO N/A    RMY 24
11/4  70/48/59/+13/0.00/0.0/411/67        38 WSW  AERO N/A    RMY 40
11/5  75/57/66/+20/0.00/0.0/336/55        35 SW   AERO N/A    RMY 36
11/6  74/63/69/+24/0.00/0.0/079/13        40 SW   AERO N/A    RMY 43
11/7  74/49/62/+17/T/0.0/448/74           38 NW   AERO N/A    RMY 42
11/8  53/35/44/-1/0.00/0.0/591/98         32 N    AERO N/A    RMY 32
11/9  52/30/41/-3/0.00/0.0/589/98         27 SW   AERO N/A    RMY 29
11/10 67/41/54/+10/0.00/0.0/586/98        35 WSW  AERO N/A    RMY 38
11/11 69/53/61/+18/0.50/0.0/036/06        56 SSW  AERO N/A    RMY 60
11/12 72/51/62/+19/0.24/0.0/398/67        47 SSW  AERO N/A    RMY 51
11/13 51/36/44/+1/0.08/0.0/000/00         41 NW   AERO N/A    RMY 43
11/14 42/28/35/-7/0.00/0.0/589/100        31 NW   AERO N/A    RMY 32
11/15 41/26/34/-8/0.03/T/423/72           16 NNW  AERO N/A    RMY 16
11/16 56/32/44/+2/0.84/0.0/059/10         40 NW   AERO N/A    RMY 40
11/17 44/32/38/-3/T/T/449/77              37 WNW  AERO N/A    RMY 34
11/18 44/28/36/-5/0.00/0.0/529/91         26 W    AERO N/A    RMY 28
11/19 43/26/35/-6/0.00/0.0/579/100        24 WSW  AERO N/A    RMY 24
11/20 37/25/31/-9/0.00/0.0/548/95         45 WNW  AERO N/A    RMY 48
11/21 37/20/29/-11/0.00/0.0/575/100       39 WNW  AERO N/A    RMY 40
11/22 48/31/40/0/0.00/0.0/574/100         30 WSW  AERO N/A    RMY 31
11/23 49/33/41/+2/0.00/0.0/440/77         28 NW   AERO N/A    RMY 28
11/24 47/29/38/-1/0.00/0.0/553/97         25 SW   AERO N/A    RMY 25
11/25 50/38/44/+5/0.01/0.0/000/00         43 WNW  AERO N/A    RMY 42
11/26 51/32/42/+4/0.00/0.0/567/100        43 NW   AERO N/A    RMY 41
11/27 56/42/49/+11/0.62/0.0/017/03        43 SSW  AERO N/A    RMY 47
11/28 54/33/44/+6/0.00/0.0/395/70         43 W    AERO N/A    RMY 43
11/29 41/28/35/-3/0.00/0.0/135/24         23 N    AERO N/A    RMY 21
11/30 57/36/47/+10/0.96/0.0/000/00        63 SSE  AERO N/A    RMY 68

DAILY RECORDS

11/05/2022: TIED RECORD HIGH MINIMUM OF 57F, ALSO SET IN 1948.

11/06/2022: NEW RECORD HIGH MINIMUM OF 63F,
PREVIOUS RECORD WAS 60F IN 2015
NEW RECORD HIGH MAXIMUM OF 74F,
PREVIOUS RECORD WAS 72F IN 2020

PRELIMINARY CLIMATE SUMMARY FOR DECEMBER 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

12/1  40/30/35/-2/0.00/0.0/…/..         54 NW   AERO N/A    RMY 60

12/2 The low since midnight is 27F, the daily normal low is 29F

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

RECORDS FOR DECEMBER 2
HIGH 61 IN 1998
LOW 3 IN 1890
PRECIP 2.09 INS. IN 1974
SNOWFALL 5.0 INS. IN 1894, 1929
PEAK GUST 89e MPH SSE IN 1942

RECORDS FOR DECEMBER 3
HIGH 67 IN 2009
LOW  -1 IN 1890
PRECIP 2.10 INS. IN 1986
SNOWFALL 6.0 INS. IN 1963
PEAK GUST 73e MPH W IN 1942

TODAY’S REPORT PREPARED BY: Matt Douglas