Wednesday, March 13, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
WEDNESDAY, MARCH 13, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0559E
SUNSET: 1749E
ABUNDANT SUNSHINE AND ABOVE NORMAL TEMPERATURES TODAY…
Sunshine has been the theme today with only a few high thin cirrus
clouds floating by. With above normal temperatures and a light wind,
it is one of the more pleasant days we’ve seen in a while.
Temperatures have reached the mid 50s early this afternoon, which is
around 10 or so degrees above the expected high temperature for this
date. The air mass does remain quite dry however, as the dew point has
remained in the low to mid 20s all day.
The wind has been quite light, especially as we approached the
afternoon hours. It has also become quite variable. The average speed
for the day so far is around 8mph, but the last 3 hours or so have
only averaged at around 3-4mph. The peak gust for the day occurred
back in the wee hours of the morning with a value of around 25mph.
Visibility has been great again today, with the view at 70 miles!
The maximum temperature so far today is 54F degrees, which is
11 degrees above the normal high of 43F. The minimum temperature
since midnight is 33F degrees, which is 7 degrees above the normal
low of 26F.
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Today’s Observations:
7 A.M.
Weather: Thin scattered cirrus
Temperature: 35F; Dew Point: 21F; Relative Humidity: 58%
Wind: NW @ 6 kts, wind light
Sea-level pressure: 1013.8 mb; 29.94 in. Hg: rising steadily
Visibility: 70 miles
6-hr Max temp: 38F
6-hr Min temp: 33F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 250 -SCT 70 138/35/21/3206/994/ WND LGT/ 8/001 52021
10038 20033
10 A.M.
Weather: Clear, few cirrus all quadrants
Temperature: 46F; Dew Point: 21F; Relative Humidity: 37%
Wind: NNW @ 4 kts, wind light
Sea-level pressure: 1015.5 mb; 29.99 in. Hg: rising, then more slowly
Visibility: 70 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 CLR 70 155/46/21/3304/999/ FEW CI ALQDS WND LGT/ 8/001
51017
1 P.M.
Weather: Clear, few altocumulus distant W-NW, few cirrus all quadrants
Temperature: 52F; Dew Point: 24F; Relative Humidity: 32%
Wind: S @ 3 kts, wind light and variable
Sea-level pressure: 1013.9 mb; 29.94 in. Hg: falling, then more rapidly
Visibility: 70 miles
6-hr Max temp: 54F
6-hr Min temp: 35F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 CLR 70 139/52/24/1803/994/ FEW AC DSNT W-NW FEW CI ALQDS
WND L/V/ 8/051 58016 10054 20035
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SUMMARY FOR TUESDAY, MARCH 12, 2024
TEMPERATURE (DEGREES F)
MAX…….54 NORMAL…..43
MIN…….33 NORMAL…..26
MEAN……44 NORMAL…..34
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………..+10
TOTAL DEPARTURE FOR THE MONTH…………………..+94 [+7.6 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………21 DEPARTURE…….-10
TOTAL HEATING UNITS FOR THE MONTH…………..293 DEPARTURE…….-95
TOTAL HEATING UNITS FOR THE SEASON…………4181 DEPARTURE……-639
TOTAL HEATING UNITS LAST SEASON TO DATE…….4075 DEPARTURE……+106
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all Main Tower.
E=Estimated
F420C (Official)……….E43 NW @ 03:36 P.M.
VECTOR #1 (1-Sec)……….41 NW @ 03:36 P.M.
VECTOR #2 (1-Sec)……….44 NW @ 12:43 P.M.
DAVIS #1……………….39 WNW @ 03:36 P.M.
DAVIS #2 ………………41 NNW @ 12:43 P.M.
RMY #1 (Instantaneous)…..45 NW @ 03:36 P.M.
RMY #2 (Instantaneous)…..45 NW @ 12:43 P.M.
MERLIN…………………39 NNW
RICHARDS (C5C) (Inst)……40 @ 03:36 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………30 NW @ 09:49 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..26 @ 09:51 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..28 @ 12:37 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………27 WNW @ 09:51 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………27 NW @ 12:37 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..26 NW @ 12:45 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..27 WNW @ 12:37 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………26 @ 12:45 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……14.6 NW [350 total miles]
VECTOR #1…………….14.0
VECTOR #2…………….15.2
DAVIS #1……………..14.5 NW
DAVIS #2……………..14.8 NW
RMY #1……………….13.4 NW
RMY #2……………….14.7 NW
RICHARDS (C5C)………..14.3
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.17
TOTAL PRECIPITATION FOR THE MONTH…………..4.33 DEPARTURE…..+2.24
TOTAL PRECIPITATION FOR THE YEAR (2024)…….14.89 DEPARTURE…..+4.30
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.6
TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE……-7.2
TOTAL SNOWFALL FOR THE SEASON (2023-2024)……26.1 DEPARTURE…..-33.0
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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
PEAK GUST: F420C (Official)
VEC1: Vector #1 1-second gust
RMY: R.M. Young #1 wind gust recording system (Instantaneous)
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M: Missing data
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
3/1 41/18/30/-1/0.00/0.0/649/96 30 NW VEC1 30 WNW RMY 33
3/2 50/32/41/+9/1.16/0.0/000/00 44 SSE VEC1 46 SE RMY 42
3/3 55/42/49/+17/0.24/0.0/130/19 32 SSE VEC1 33 SSE RMY 32
3/4 49/36/43/+11/0.01/0.0/116/17 24 ENE VEC1 22 ENE RMY 23
3/5 42/36/39/+7/0.14/0.0/000/00 21 E VEC1 21 E RMY 21
3/6 51/39/45/+12/0.44/0.0/000/00 28 NE VEC1 28 NE RMY 29
3/7 42/37/40/+7/1.06/0.0/000/00 44 NNE VEC1 44 NNE RMY 42
3/8 45/32/39/+6/0.00/0.0/…/.. 35 NNE VEC1 36 NNE RMY 38
3/9 40/32/36/+3/0.21/0.0/…/.. 32 E VEC1 32 E RMY 31
3/10 51/36/44/+10/1.07/0.0/…/.. 45 WNW VEC1 46 SE RMY 45
3/11 43/30/37/+3/T/T/…/.. 53 NW VEC1 54 NW RMY 58
3/12 54/33/44/+10/0.00/0.0/…/.. 43 NW VEC1 41 NW RMY 45
3/13 The low since midnight is 33F, the daily normal low is 26F.
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MARCH DAILY RECORDS TO DATE
NONE…
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR MARCH 13
HIGH 72 IN 1990
LOW -1 IN 1885
PRECIP 2.47 INS. IN 1993
SNOWFALL 23.0 INS. IN 2018 [RECORD FOR MONTH]
PEAK GUST 76 MPH ENE IN 1993 [THE “STORM OF THE CENTURY”]
RECORDS FOR MARCH 14
HIGH 74 IN 1946
LOW 7 IN 1896
PRECIP 4.95 INS. IN 2010
SNOWFALL 7.3 INS. IN 2017
PEAK GUST 67 MPH ENE IN 2010
TODAY’S REPORT PREPARED BY: Matt Douglas
