Saturday, April 6, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, APRIL 6, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0517E
SUNSET: 1816E
NOR’EASTER REMNANTS BRING EARLY MORNING SNOW, LIGHT RAIN AND
REDUCED VISIBILITY TO BLUE HILL TODAY…
This morning there were light snow flurries which tapered off shortly
after 8am EST. We had a brief peek of sunshine and then overcast skies
moved in again. A band of precipitation from the stalled out system
off the coast of Maine brought some early afternoon rain to the region
along with intermittent sunshine. It has truly been a ‘typical’ spring
day with a little bit of all types of weather today!
What hasn’t been typical are the temperatures! The temperature has had a
difficult time recovering and the overcast skies and cold, moist air haven’t
helped any. We just made it to 41F during the late morning before the rain
moved through, causing a dip in the already below normal temperatures.
Winds continue to decrease from this week’s nor’easter. The average wind
speed so far is around 10mph, primarily out of the NNW. This morning around
10:30am holds the current peak gust spot so far at around 29mph. The wind was
fairly active during the morning but has weakened quite a bit in the afternoon.
Visibility was around 50 miles during the early morning hours. We were
holding at around 20 miles by the final observation, due to the rain and
light fog in the area.
The maximum temperature so far today is 41F degrees, which is 11
degrees below the normal high of 52F. The minimum temperature since
midnight is 33F degrees, which is 2 degrees below the normal low of 35F.
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Today’s Observations:
7 A.M.
Weather: Light snow, overcast altostratus, few breaks in overcast NW-W,
few stratus fractus ENE-SE-SW, virga ENE-E, distant SSW-WSW, precipitation
very light, sun dimly visible
Temperature: 34F; Dew Point: 34F; Relative Humidity: 98%
Wind: NW @ 8 kts
Sea-level pressure: 1005.2 mb; 29.68 in. Hg: rising unsteadily
Visibility: 50 miles
6-hr Max temp: 36F
6-hr Min temp: 33F
24-hr Precip: 0.02 inches
24-hr Snowfall: Trace
Snow Depth: 0.0 inches
BHO SA 1155 E90 OVC 50S- 052/34/34/3208/968/ FEW BINOVC NW-N FEW STRFRA
ENE-SE-SW VIRGA ENE-E DSNT SSW-WSW PCPN VRY LGT SUN DMLY VSBL TOTAL
NEW SNW PST 24 HRS TRACE/ 8/62/ 52015 6001/ 70002 10036 20033
10 A.M.
Weather: Overcast stratocumulus
Temperature: 39F; Dew Point: 31F; Relative Humidity: 74%
Wind: WNW @ 10 kts
Sea-level pressure: 1006.2 mb; 29.71 in. Hg: rising unsteadily
Visibility: 40 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E60 OVC 40 062/39/31/3410/971/ 8/5// 52010
1 P.M.
Weather: Light rain, overcast stratus, few stratus fractus N-NE-ESE,
precipitation very light, sun dimly visible
Temperature: 39F; Dew Point: 37F; Relative Humidity: 92%
Wind: NNW @ 6 kts, wind light
Sea-level pressure: 1007.0 mb; 29.74 in. Hg: rising steadily
Visibility: 20 miles, thin fog all quadrants
6-hr Max temp: 41F
6-hr Min temp: 34F
6-hr Precip: Trace
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 E50 OVC 20R- 070/39/37/3306/974/ FEW STRFRA N-NE-ESE
THN F ALQDS PCPN VRY LGT SUN DMLY VSBL WND LGT/ 8/6// 52008 6000/
10041 20034
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SUMMARY FOR FRIDAY, APRIL 5, 2024
TEMPERATURE (DEGREES F)
MAX…….45 NORMAL…..52
MIN…….31 NORMAL…..34
MEAN……38 NORMAL…..43
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………-5
TOTAL DEPARTURE FOR THE MONTH……………………-10 [-1.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………38 DEPARTURE…….+16
TOTAL HEATING UNITS FOR THE MONTH…………..137 DEPARTURE…….+21
TOTAL HEATING UNITS FOR THE SEASON…………4778 DEPARTURE……-685
TOTAL HEATING UNITS LAST SEASON TO DATE…….4635 DEPARTURE……+143
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 WNW @ 01:52 P.M.
VECTOR #1 (1-Sec)……….31 WNW @ 01:52 P.M.
VECTOR #2 (1-Sec)……….34 WNW @ 01:50 P.M.
DAVIS #1……………….33 WNW @ 01:52 P.M.
DAVIS #2 ………………32 WNW @ 09:03 A.M.
RMY #1 (Instantaneous)…..33 WNW @ 05:20 P.M.
RMY #2 (Instantaneous)…..34 W @ 01:34 P.M.
MERLIN…………………31
RICHARDS (C5C) (Inst)……33 @ 01:52 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………23 WNW @ 01:52 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..22 @ 02:21 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..24 @ 09:12 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………24 W @ 01:52 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………24 WNW @ 09:13 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..21 WNW @ 01:52 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..23 WNW @ 09:13 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………22 @ 02:22 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……13.5 WNW [324 total miles]
VECTOR #1…………….13.1
VECTOR #2…………….14.6
DAVIS #1……………..13.7 WNW
DAVIS #2……………..14.4 NW
RMY #1……………….12.4 WNW
RMY #2……………….14.2 WNW
RICHARDS (C5C)………..13.5
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.02 DEPARTURE…..-0.16
TOTAL PRECIPITATION FOR THE MONTH…………..2.44 DEPARTURE…..+1.59
TOTAL PRECIPITATION FOR THE YEAR (2024)…….22.49 DEPARTURE…..+7.62
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………TRACE DEPARTURE……-0.1
TOTAL SNOWFALL FOR THE MONTH………………..0.7 DEPARTURE……-0.2
TOTAL SNOWFALL FOR THE SEASON (2023-2024)……26.8 DEPARTURE…..-41.0
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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/…/.. 63 ENE VEC1 64 ENE RMY 68
4/5 45/31/38/-5/0.01/T/…/.. 33 WNW VEC1 31 WNW RMY 33
4/6 The low since midnight is 33F, the daily normal low is 35F.
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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 6
HIGH 82 IN 1921
LOW 16 IN 1982
PRE 1.72 INS IN 1886
SNOW 12.3 INS IN 1982
WIND 71e MPH WNW IN 1940
RECORDS FOR APRIL 7
HIGH 90 IN 2010
LOW 13 IN 1982
PRECIP 1.72 IN. IN 1924
SNOWFALL 4.5 IN. IN 1967, 1996
PEAK GUST 65 MPH WNW IN 1982
TODAY’S REPORT PREPARED BY: Amanda Joly
