Saturday, April 1, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, APRIL 1, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0527E
SUNSET: 1810E
OVERCAST WITH RAIN THIS MORNING, TURNING MILD THIS AFTERNOON…
Periods of rain moved through the region overnight through
this morning associated with a warm front that finally pushed
through mid to late morning. Temperatures, which were in the
upper 30s/near 40 all night, finally pushed into the mid 50s
by late this morning. The dew point has also risen into the
mid 50s, making it feel a bit on the humid side today.
Rainfall amounted to 0.14″ through the 7am observation, with
an additional 0.35″ falling between 7am and 1pm. A brief period
of sleet was also recorded last evening.
The wind was generally light southerly early this morning,
but quickly ramped up post warm frontal passage. Gusts over
30mph has been occurring this afternoon.
The high temperature so far today is 56F, which is 6 degrees
above the normal maximum temperature for today of 50F. The low
since midnight is 39F, which is 7 degrees above our normal
minimum temperature of 32F.
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PRELIMINARY STATS FOR MARCH 2023
TEMPERATURE, Deg. F
Avg. Max. 46.2 [+2.1]
Avg. Min. 31.1 [+4.2]
Mean 38.7 [+3.2]
24-hour corrected mean: 37.9
Max. for month: 59F on the 23rd
Min. for month: 25F on the 5th and 20th
HEATING DEGREE DAYS
Total heating units: 812 [-103]
Total for the season: 4532 [-815]
Total for last season: 4863
COOLING DEGREE DAYS
Total cooling units: 0 [ 000]
Total for the season: 0 [ 000]
Total for last season: 0
PRECIPITATION, Inches
Total: 5.96 [+0.44]
Greatest in 24 hrs: 3.30 on the 13-14th
SNOWFALL, Inches
Total: 10.6 [-4.4]
Greatest in 24 hrs: 7.2 on the 14-15th
WIND, mph
Avg. uncorrected wind speed: 12.4 mph
Avg. corrected wind speed: 12.8 mph
Prevailing wind direction: Northwest [16%]
Peak gust and direction: 51 NNE on the 7th
SUNSHINE:
Campbell-Stokes card minutes: 10872 of a possible 21516, or 51%
Astronomical total minutes: 11237 of a possible 22222, or 51%
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Today’s Observations:
7 A.M.
Weather: Sky obscured, vertical visibility 200ft, light rain
Temperature: 43F; Dew Point: 43F; Relative Humidity: 100%
Wind: S @ 5 kts, wind light
Sea-level pressure: 1005.0 mb; 29.68 in. Hg: falling, then more slowly
Visibility: 1/8 mile, fog
6-hr Max temp: 43F
6-hr Min temp: 39F
24-hr Precip: 0.14 ins.
24-hr Snowfall: Trace
Snow Depth: 0 ins.
BHO SA 1155 X W2 1/8R-F 050/43/43/1905/968/ WND LGT/ 8////
56034 6003/ 70014 10043 20039
10 A.M.
Weather: Sky obscured, vertical visibility 200ft, light rain
Temperature: 50F; Dew Point: 50F; Relative Humidity: 100%
Wind: SSW @ 19 kts
Sea-level pressure: 1000.1 mb; 29.53 in. Hg: falling, then more rapidly
Visibility: 1/8 mile, fog
3-hr Precip: 0.15 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 X W2 1/8R-F 001/50/50/2019/953/ PCPN VRY LGT
PRESFR/ 8//// 58049 6015/
1 P.M.
Weather: Overcast stratus, few stratus fractus all quadrants
Temperature: 55F; Dew Point: 55F; Relative Humidity: 100%
Wind: SSW @ 16G23 kts
Sea-level pressure: 995.8mb; 29.41 in. Hg: falling, then more rapidly
Visibility: 20 miles, thin fog
6-hr Max temp: 55F
6-hr Min temp: 43F
6-hr Precip: 0.35 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 E2 OVC 20 958/55/55/2116G23/941/ FEW STFRA ALQDS
THN F ALQDS/ 8/7// 58043 6035/ 10055 20043
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SUMMARY FOR FRIDAY, MARCH 31, 2023
TEMPERATURE (DEGREES F)
MAX…….52 NORMAL…..49
MIN…….26 NORMAL…..32
MEAN……39 NORMAL…..41
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….-2
TOTAL DEPARTURE FOR THE MONTH………………..+100 [+3.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………26 DEPARTURE……..+1
TOTAL HEATING UNITS FOR THE MONTH…………..815 DEPARTURE……-103
TOTAL HEATING UNITS FOR THE SEASON…………4532 DEPARTURE……-815
TOTAL HEATING UNITS LAST SEASON TO DATE…….4863 DEPARTURE……-331
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)…………33 SW @ 5:03 P.M.
VECTOR #1 (1-Sec)……….35 SW @ 5:03 P.M.
VECTOR #2 (1-Sec)……….40 SW @ 5:03 P.M.
DAVIS #1……………….34 SW @ 5:04 P.M.
DAVIS #2 ………………37 SW @ 5:03 P.M.
RMY #1 (Instantaneous)…..38 SW @ 5:03 P.M.
RMY #2 (Instantaneous)…..44 SW @ 5:03 P.M.
MERLIN…………………32 S
RICHARDS (C5C) (Inst)……35 @ 4:51 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………23 SSW @ 5:18 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..23 @ 4:52 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..24 @ 4:52 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………23 SSW @ 4:52 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………24 SSW @ 4:52 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..23 SW @ 4:52 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..25 SW @ 4:52 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………22 @ 5:07 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….10.3 W [247 total miles]
VECTOR #1……………..10.4
VECTOR #2……………..10.9
DAVIS #1………………10.4 SW
DAVIS #2………………10.8 SW
RMY #1………………..10.1 SW
RMY #2………………..10.9 SW
RICHARDS (C5C)…………10.6
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.14 DEPARTURE…..-0.03
TOTAL PRECIPITATION FOR THE MONTH…………..5.96 DEPARTURE…..+0.44
TOTAL PRECIPITATION FOR THE YEAR…………..14.64 DEPARTURE…..+0.59
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……-4.4
TOTAL SNOWFALL FOR THE SEASON (2022-2023)……34.9 DEPARTURE…..-32.0
————————————————————–
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/+8/0.00/0.0/636/87 33 WNW VEC1 35 WNW RMY 36
3/22 55/38/47/+10/T/0.0/617/84 24 SSW VEC1 25 SSW RMY 26
3/23 59/45/52/+14/0.01/0.0/044/06 35 SSW VEC1 36 SSW RMY 37
3/24 52/36/44/+6/0.00/0.0/311/42 32 WNW VEC1 33 WNW RMY 33
3/25 39/33/36/-2/0.17/T/015/02 35 ESE VEC1 38 ESE RMY 37
3/26 57/39/48/+9/T/0.00/597/80 41 WNW VEC1 44 WNW RMY 46
3/27 58/35/47/+8/0.41/0.0/516/69 18 E VEC1 21 E RMY 20
3/28 44/35/40/+1/0.24/T/090/12 17 NW VEC1 17 NW RMY 18
3/29 52/29/41/+1/0.00/0.0/725/96 29 SSW VEC1 31 SSW RMY 31
3/30 41/27/34/-6/T/T/734/97 39 WNW VEC1 41 WNW RMY 43
3/31 52/26/39/-2/0.11/T/426/56 33 SW VEC1 35 SW RMY 38
4/1 The low since midnight is 39F, the daily normal low is 32F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR APRIL 1
HIGH 74 IN 1967
LOW 6 IN 1923 [RECORD FOR MONTH]
PRECIP 3.47 IN. IN 2004 [RECORD FOR MONTH]
SNOWFALL 15.0 IN. IN 1997 [RECORD FOR MONTH]
PEAK GUST 75 MPH SSW IN 1962
RECORDS FOR APRIL 2
HIGH 77 IN 1967
LOW 14 IN 1919
PRECIP 1.83 IN. IN 1970
SNOWFALL 6.5 IN. IN 1924
PEAK GUST 76 MPH SSW IN 1970
TODAY’S REPORT PREPARED BY: Matt Douglas/Amanda Joly
