Sunday, March 26, 2023

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

SUNDAY, MARCH 26, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0537E
SUNSET:  1803E

WINDY AND MILD UNDER A MIX OF SUN AND CLOUDS…

After early morning clouds and fog burned off, skies featured a
mix of stratocumulus clouds and sunshine. Temperatures have been
mild with readings reaching the upper 50s. If not for the gusty
winds, it would be a perfect afternoon.

As mentioned, the wind has been quite busy today with an average
speed of around 13mph. Frequent gusts over 30mph have been
occurring today. The peak gust thus far has been 41mph.

Visibility has been excellent all day, rising from 60 miles
at the 7am observation to 80 miles early this afternoon.

The high temperature so far today was 57F, 10 degrees above the
normal maximum temperature for today of 47F. The low since
midnight so far is 35F, 5 degrees above our normal minimum
temperature of 30F.

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Today’s Observations:

7 A.M.
Weather: Scattered stratus fractus, scattered stratocumulus,
thin scattered cirrus
Temperature: 40F; Dew Point: 40F; Relative Humidity: 100%
Wind: W @ 12 kts
Sea-level pressure: 1008.6 mb; 29.78 in. Hg: rising, then more rapidly
Visibility: 60 miles
6-hr Max temp: 40F
6-hr Min temp: 35F
24-hr Precip: 0.17 ins.
24-hr Snowfall: Trace
Snow Depth: 0 ins.
BHO SA 1155 3 SCT 30 SCT 250 -SCT 60 086/40/40/2812/978/ 8/701
53026 70017 10040 20035

10 A.M.
Weather: Broken stratocumulus
Temperature: 47F; Dew Point: 33F; Relative Humidity: 58%
Wind: WNW @ 17G28 kts, peak wind WNW 41mph at 9:23 A.M.
Sea-level pressure: 1009.8 mb; 29.82 in. Hg: rising then falling
Visibility: 70 miles
3-hr Precip:  0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 E25 BKN 70 098/47/33/3017G28/982/ PK WND 2936/23/
8/500 50012

1 P.M.
Weather: Broken stratocumulus
Temperature: 52F; Dew Point: 29F; Relative Humidity: 41%
Wind: WNW @ 21G32 kts, peak wind WNW 37mph at 12:50 P.M.
Sea-level pressure: 1009.1mb; 29.80 in. Hg: falling, then more slowly
Visibility: 80 miles
6-hr Max temp: 54F
6-hr Min temp: 40F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0.0 ins.
BHO SA 1755 E55 BKN 80 091/52/29/2921G32/980/ PK WND 2932/50/
8/500 56007 10054 20040

————————————————————–

SUMMARY FOR SATURDAY, MARCH 25, 2023

TEMPERATURE (DEGREES F)
MAX…….39   NORMAL…..47
MIN…….33   NORMAL…..30
MEAN……36   NORMAL…..38

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….-2
TOTAL DEPARTURE FOR THE MONTH…………………+89 [+3.4 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………29  DEPARTURE……..+2
TOTAL HEATING UNITS FOR THE MONTH…………..671  DEPARTURE…….-91
TOTAL HEATING UNITS FOR THE SEASON…………4391  DEPARTURE……-803
TOTAL HEATING UNITS LAST SEASON TO DATE…….4696  DEPARTURE……-305

PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,3
420C, Contacting, Merlin and Richards are all Main Tower.

420C (Official)…………35 ESE @   6:41 P.M.
VECTOR #1 (1-Sec)……….38 ESE @   6:41 P.M.
VECTOR #2 (1-Sec)……….36 ESE @   6:33 P.M.
DAVIS #1……………….36 ESE @   6:31 P.M.
DAVIS #2 ………………34 ESE @   6:33 P.M.
RMY #1 (Instantaneous)…..37 ESE @   6:30 P.M.
RMY #2 (Instantaneous)…..37 ESE @   6:33 P.M.
MERLIN…………………33 ESE
RICHARDS (C5C) (Inst)……35     @   6:41 P.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………26 ESE @   6:22 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..24 ESE @   8:03 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..23 ESE @   7:00 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………25 ESE @   8:04 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………24 ESE @   7:00 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..24 ESE @   8:04 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..23 ESE @   7:00 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………24     @   8:04 P.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….12.4 NW [298 total miles] VECTOR #1……………..12.0
VECTOR #2……………..12.0
DAVIS #1………………12.5 ESE
DAVIS #2………………12.1 ESE
RMY #1………………..12.1 E
RMY #2………………..11.9 E
RICHARDS (C5C)…………12.5

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.17 DEPARTURE…..-0.01
TOTAL PRECIPITATION FOR THE MONTH…………..5.20 DEPARTURE…..+0.73
TOTAL PRECIPITATION FOR THE YEAR…………..13.85 DEPARTURE…..+0.88

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………TRACE DEPARTURE……-0.3
TOTAL SNOWFALL FOR THE MONTH……………….10.6 DEPARTURE……-2.7
TOTAL SNOWFALL FOR THE SEASON (2022-2023)……34.9 DEPARTURE…..-30.3

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PRELIMINARY CLIMATE SUMMARY FOR MARCH 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

3/1   43/27/35/+4/0.00/0.0/425/63         20 NW   VEC1 21 SE  RMY 21
3/2   40/34/37/+5/0.31/0.0/000/00         35 NW   VEC1 36 NW  RMY 39
3/3   44/29/37/+5/0.01/0.1/462/68         33 NW   VEC1 34 NW  RMY 36
3/4   33/28/31/-1/0.82/3.3/000/00         48 E    VEC1 49 NE  RMY 52
3/5   41/25/33/+1/0.00/0.0/240/35         35 NW   VEC1 36 NW  RMY 37
3/6   46/31/39/+6/0.00/0.0/571/83         46 WNW  VEC1 48 NW  RMY 51
3/7   38/26/32/-1/T/T/387/56              41 NW   VEC1 42 NW  RMY 46
3/8   44/26/35/+2/T/T/194/28              32 N    VEC1 34 N   RMY 34
3/9   47/32/40/+7/0.00/0.0/473/68         28 NW   VEC1 28 NW  RMY 29
3/10  49/27/38/+4/T/0.0/616/88            18 W    VEC1 18 SE  RMY 17
3/11  36/29/33/-1/0.14/T/000/00           32 NE   VEC1 34 NE  RMY 34
3/12  41/28/35/+1/0.00/0.0/571/81         26 NNE  VEC1 26 NNE RMY 27
3/13  41/32/37/+3/0.52/0.0/000/00         29 E    VEC1 31 E   RMY 33
3/14  39/31/35/0/3.18/6.9/000/00          51 NNE  VEC1 52 NNE RMY 55
3/15  39/30/35/0/0.00/0.0/342/48          46 NNW  VEC1 49 NNW RMY 53
3/16  49/29/39/+4/0.00/0.0/445/62         30 NW   VEC1 31 NW  RMY 34
3/17  52/37/45/+9/T/0.0/036/05            32 S    VEC1 36 S   RMY 36
3/18  52/36/44/+8/0.01/0.0/376/52         30 WNW  VEC1 31 WNW RMY 31
3/19  38/26/32/-4/0.00/0.0/682/94         47 WNW  VEC1 46 WNW RMY 46
3/20  51/25/38/+1/0.00/0.0/706/97         32 WSW  VEC1 34 WSW RMY 35
3/21  58/32/45/+8/0.00/0.0/…/..         33 WNW  VEC1 35 WNW RMY 36
3/22  55/38/47/+10/T/0.0/…/..           24 SSW  VEC1 25 SSW RMY 26
3/23  59/45/52/+14/0.01/0.0/…/..        35 SSW  VEC1 36 SSW RMY 37
3/24  52/36/44/+6/0.00/0.0/…/..         32 WNW  VEC1 33 WNW RMY 33
3/25 39/33/36/-2/…./T/…/.. 35 ESE  VEC1 38 ESE RMY 37

3/26  The low since midnight is 35F, the daily normal low is 30F

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

RECORDS FOR MARCH 26
HIGH 76 IN 1922, 1949
LOW 6 IN 1960
PRECIP 1.99 INS. IN 1988
SNOWFALL 5.4 INS. IN 2001
PEAK GUST 63 MPH S IN 1970

RECORDS FOR MARCH 27
HIGH 78 IN 1998
LOW 12 IN 1975
PRECIP 1.05 INS. IN 1913
SNOWFALL 6.6 INS. IN 1959
PEAK GUST 62 MPH NW IN 1965, SE IN 1992

TODAY’S REPORT PREPARED BY: Matt Douglas / Amanda Joly