Tuesday, April 16, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, APRIL 16, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0501E
SUNSET: 1828E
ANOTHER DAY FULL OF SUNSHINE WITH ABOVE NORMAL TEMPERATURES….
It’s been another splendid day here atop Blue Hill with mainly
sunny skies, a nice breeze, and above normal temperatures.
Temperatures have warmed into the mid to upper 60s early this
afternoon. Its not as warm as yesterday, but still excellent for
this time of year, considering what we all know can and often
does happen during spring in eastern Massachusetts. With the
dew point in the 30s, the air is nice and dry, so it feels quite
comfortable out there today.
The wind has been pretty steady at around 10mph (on average)
most of the day. Much like yesterday, it has gotten a bit gusty
as the atmosphere mixes from the day-time heating. Gusts have
reached between 25-30mph at times with a peak officially of
around 29mph occurring just before noon.
Visibility has been excellent all day thanks to the dry air mass.
The view has been holding around 70 miles all day.
The maximum temperature so far today is 66F degrees, which is 9
degrees above the normal high of 57F. The minimum temperature since
midnight is 44F degrees, which is 6 degrees above the normal low
of 38F.
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Today’s Observations:
7 A.M.
Weather: Clear, few altocumulus/castellanus distant N-NNE
Temperature: 50F; Dew Point: 36F; Relative Humidity: 58%
Wind: NW @ 7 kts
Sea-level pressure: 1018.6 mb; 30.08 in. Hg: rising, then more rapidly
Visibility: 70 miles
6-hr Max temp: 50F
6-hr Min temp: 44F
24-hr Precip: Trace
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 CLR 70 186/50/36/3207/008/ FEW AC/ACC DSNT N-NNE/ 8/080
53018 70000 10050 20044
10 A.M.
Weather: Clear, few small cumulus all quadrants
Temperature: 59F; Dew Point: 34F; Relative Humidity: 38%
Wind: NW @ 8 kts, wind variable between WNW and N
Sea-level pressure: 1018.0 mb; 30.06 in. Hg: rising, then falling
Visibility: 70 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 CLR 70 180/59/34/3208/006/ FEW SML CU ALQDS WND 30V36/
8/100 50006
1 P.M.
Weather: Scattered cumulus
Temperature: 65F; Dew Point: 32F; Relative Humidity: 28%
Wind: WNW @ 12G20 kts
Sea-level pressure: 1017.1 mb; 30.03 in. Hg: falling, then rising
Visibility: 70 miles
6-hr Max temp: 66F
6-hr Min temp: 50F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 60 SCT 70 171/65/32/2912G20/003/ 8/100 55009 10066 20050
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SUMMARY FOR MONDAY, APRIL 15, 2024
TEMPERATURE (DEGREES F)
MAX…….73 NORMAL…..56
MIN…….43 NORMAL…..38
MEAN……58 NORMAL…..47
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………+11
TOTAL DEPARTURE FOR THE MONTH……………………+32 [+1.9 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY…………….7 DEPARTURE…….-11
TOTAL HEATING UNITS FOR THE MONTH…………..294 DEPARTURE…….-23
TOTAL HEATING UNITS FOR THE SEASON…………4935 DEPARTURE……-729
TOTAL HEATING UNITS LAST SEASON TO DATE…….4743 DEPARTURE……+192
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)……….E33 NW @ 05:11 P.M.
VECTOR #1 (1-Sec)……….33 NW @ 04:21 P.M.
VECTOR #2 (1-Sec)……….34 WNW @ 01:06 P.M.
DAVIS #1……………….33 WNW @ 05:09 P.M.
DAVIS #2 ………………33 WNW @ 02:40 P.M.
RMY #1 (Instantaneous)…..34 WNW @ 05:09 P.M.
RMY #2 (Instantaneous)…..34 WNW @ 01:06 P.M.
MERLIN…………………33 NW
RICHARDS (C5C) (Inst)……33 @ 05:09 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………25 NW @ 04:37 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..22 @ 12:52 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..24 @ 02:41 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………23 W @ 12:52 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………24 WNW @ 02:41 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..21 NW @ 04:23 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..24 W @ 02:41 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………22 @ 12:52 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….9.4 NW [225 total miles]
VECTOR #1……………..9.5
VECTOR #2…………….10.1
DAVIS #1………………9.6 WNW
DAVIS #2………………9.8 NW
RMY #1………………..9.2 WNW
RMY #2………………..9.9 WNW
RICHARDS (C5C)…………9.9
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….TRACE DEPARTURE…..-0.16
TOTAL PRECIPITATION FOR THE MONTH…………..3.67 DEPARTURE…..+1.10
TOTAL PRECIPITATION FOR THE YEAR (2024)…….23.72 DEPARTURE…..+7.13
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.1
TOTAL SNOWFALL FOR THE MONTH………………..0.7 DEPARTURE……-1.5
TOTAL SNOWFALL FOR THE SEASON (2023-2024)……26.8 DEPARTURE…..-42.3
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PRELIMINARY CLIMATE SUMMARY FOR APRIL 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)
4/1 56/40/48/+7/0.00/0.0/153/20 20 SSE VEC1 20 SSE RMY 19
4/2 47/35/41/0/0.07/0.0/115/15 25 E VEC1 25 E RMY 25
4/3 41/34/38/-4/1.10/T/000/00 53 E VEC1 53 E RMY 53
4/4 36/32/34/-8/1.25/0.7/000/00 63 ENE VEC1 64 ENE RMY 68
4/5 45/31/38/-5/0.01/T/147/19 33 WNW VEC1 31 WNW RMY 33
4/6 43/33/38/-5/0.08/093/12 35 N VEC1 35 N RMY 35
4/7 48/34/41/-3/T/0.0/094/12 32 N VEC1 31 N RMY 31
4/8 66/36/51/+7/0.00/0.0/636/81 23 WNW VEC1 23 WNW RMY 22
4/9 63/40/52/+8/0.00/0.0/741/94 22 ENE VEC1 21 ENE RMY 21
4/10 65/38/52/+7/T/0.0/348/44 26 S VEC1 26 S RMY 30
4/11 55/42/49/+4/0.04/0.0/000/00 32 SSE VEC1 32 SSE RMY 31
4/12 60/46/53/+7/1.03/0.0/…/.. 62 SSE VEC1 62 S RMY 63
4/13 54/43/49/+3/T/0.0/…/.. 43 W VEC1 42 WNW RMY 46
4/14 58/42/50/+3/0.09/0.0/…/.. 33 WSW VEC1 33 WSW RMY 35
4/15 73/43/58/+11/T/0.0/…/.. 33 NW VEC1 33 NW RMY 34
4/16 The low since midnight is 44F, the daily normal low is 38F.
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APRIL 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 APRIL 16
HIGH 89 IN 2012
LOW 23 IN 1943
PRECIP 2.63 IN. IN 2018
SNOWFALL 3.6 IN. IN 2021
PEAK GUST 73 MPH E IN 2007
RECORDS FOR APRIL 17
HIGH 93 IN 2002
LOW 21 IN 1908
PRECIP 1.68 IN 1954
SNOWFALL 1.0 IN. IN 1899
PEAK GUST 63 MPH ESE IN 2011
TODAY’S REPORT PREPARED BY: Matt Douglas
