Friday, April 14, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
FRIDAY, APRIL 14, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0505E
SUNSET: 1824E
ANOTHER HAZY DAY WITH CONTINUED RECORD BREAKING HIGH TEMPS…
It’s the second day in a row we’ve had record breaking heat on
top of the hill. Yesterday’s high of 88F beats the record of
85F set back in 1945. Today so far, we already have a high of
88F beating the record of 80F set also in 1945. This is 32
degrees above the normal temperature for this date of 56F!
Temperatures have already begun to decrease with wind from the
north east. If temperatures don’t go below 59F by midnight
there is also a chance of beating the daily record high minimum
temperature of 59F set in 1945. The low temperature so far today
is 66F.
Dry weather continues with low humidity and clear skies.
Visibility has been limited again today due to haziness, likely
in part due to the increase in tree pollen in the air. We’ve
only been able to see about 35-40 miles today.
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Today’s Observations:
7 A.M.
Weather: Broken cirrostratus
Temperature: 71F; Dew Point: 50F; Relative Humidity: 47%
Wind: WNW @ 6 kts
Sea-level pressure: 1011.7 mb; 29.86 in. Hg: rising, then more slowly
Visibility: 35 miles, hazy
6-hr Max temp: 71F
6-hr Min temp: 66F
24-hr Precip: 0.00
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 E250 BKN 35 117/71/50/3006/988/ HAZY/ 8/006 51018
10071 20066
10 A.M.
Weather: Broken cirrostratus
Temperature: 83F; Dew Point: 49F; Relative Humidity: 30%
Wind: WNW @ 4 kts, light and variable
Sea-level pressure: 1012.2 mb; 29.89 in. Hg: steady then rising
Visibility: 40 miles, hazy
3-hr Precip: 0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 E250 BKN 40 122/83/49/3004/989/ HAZY WND L/V/ 8/006 52005
1 P.M.
Weather: Broken cirrostratus, few cirrus clouds SSE-S
Temperature: 82F; Dew Point: 50F; Relative Humidity: 33%
Wind: ENE @ 11G18 kts
Sea-level pressure: 1011.5 mb; 29.87 in. Hg: rising then falling
Visibility: 40 miles, hazy
6-hr Max temp: 88F
6-hr Min temp: 71F
6-hr Precip: 0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 E250 SCT 40 115/82/50/0711G18/987/ FEW CI SSE-S
HAZY/ 8/005 58007 10088 20071
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SUMMARY FOR THURSDAY, APRIL 13, 2023
TEMPERATURE (DEGREES F)
MAX…….88R NORMAL…..55
MIN…….52 NORMAL…..37
MEAN……70 NORMAL…..46
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……..+24
TOTAL DEPARTURE FOR THE MONTH………………..+81 [+6.0 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY…………….0 DEPARTURE…….-24
TOTAL HEATING UNITS FOR THE MONTH…………..203 DEPARTURE…….-77
TOTAL HEATING UNITS FOR THE SEASON…………4735 DEPARTURE……-892
TOTAL HEATING UNITS LAST SEASON TO DATE…….5081 DEPARTURE……-346
COOLING DEGREE DAYS (SEASON: JAN 2023 THRU DEC 2023)
TOTAL HEATING UNITS FOR YESTERDAY…………….5 DEPARTURE……..+5
TOTAL HEATING UNITS FOR THE MONTH…………….5 DEPARTURE……..+5
TOTAL HEATING UNITS FOR THE SEASON……………5 DEPARTURE……..+5
TOTAL HEATING UNITS LAST SEASON TO DATE……….0 DEPARTURE……..+5
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all Main Tower.
F420C (Official)………..25 W @ 4:57 P.M.
VECTOR #1 (1-Sec)……….26 WNW @ 1:46 P.M.
VECTOR #2 (1-Sec)……….28 WNW @ 4:56 P.M.
DAVIS #1……………….27 W @ 4:55 P.M.
DAVIS #2 ………………28 W @ 4:55 P.M.
RMY #1 (Instantaneous)…..27 WNW @ 1:46 P.M.
RMY #2 (Instantaneous)…..28 WNW @ 4:55 P.M.
MERLIN…………………26 NW
RICHARDS (C5C) (Inst)……27 @ 4:55 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………19 W @ 4:57 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..19 @ 4:57 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..20 @ 4:56 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………21 W @ 4:57 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………21 S @ 4:26 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..18 W @ 4:57 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..20 WNW @ 4:56 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………19 @ 4:57 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..11.8 W [283 total miles]
VECTOR #1………………11.9
VECTOR #2………………12.2
DAVIS #1……………….11.9 SW
DAVIS #2……………….12.3 WSW
RMY #1…………………11.5 WSW
RMY #2…………………12.2 WSW
RICHARDS (C5C)………….11.9
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.18
TOTAL PRECIPITATION FOR THE MONTH…………..0.43 DEPARTURE…..-1.82
TOTAL PRECIPITATION FOR THE YEAR…………..15.04 DEPARTURE…..-1.23
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.1
TOTAL SNOWFALL FOR THE MONTH………………..0.0 DEPARTURE……-2.0
TOTAL SNOWFALL FOR THE SEASON (2022-2023)……34.9 DEPARTURE…..-34.0
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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
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
4/1 60/39/50/+9/0.39/0.0/145/19 36 SW VEC1 40 SW RMY 41
4/2 50/30/40/-1/0.00/0.0/636/83 40 NNW VEC1 44 NNW RMY 45
4/3 51/28/40/-2/0.00/0.0/737/96 41 SSW VEC1 46 SSW RMY 46
4/4 62/40/51/+9/0.00/0.0/594/77 26 ENE VEC1 26 ENE RMY 27
4/5 45/37/41/-2/0.02/0.0/000/00 33 ENE VEC1 34 ENE RMY 37
4/6 62/37/50/+7/0.02/0.0/155/20 26 NW VEC1 28 NNW RMY 29
4/7 58/36/47/+3/0.00/0.0/328/42 45 WNW VEC1 48 WNW RMY 52
4/8 50/29/40/-4/0.00/0.0/767/98 26 NNW VEC1 29 NNW RMY 31
4/9 54/33/44/0/0.00/0.0/770/98 25 S VEC1 28 S RMY 28
4/10 65/33/49/+4/0.00/0.0/772/98 18 WSW VEC1 19 NW RMY 20
4/11 75/45/60/+15/0.00/0.0/522/66 37 W VEC1 37 W RMY 38
4/12 73/56/65/+19/0.00/0.0/…/.. 46 NW VEC1 49 NW RMY 52
4/13 88/52/70/+24/0.00/0.0/…/.. 25 W VEC1 26 WNW RMY 27
4/14 The low since midnight is 66F, the daily normal low is 37F
DAILY RECORDS
04/12/2023: NEW RECORD HIGH MINIMUM TEMPERATURE OF 56F,
THIS BEATS THE OLD RECORD OF 52F SET IN 1945 AND 1947
04/13/2023: NEW RECORD HIGH MAXIMUM TEMPERATURE OF 88F,
THIS BEATS THE OLD RECORD OF 85F SET IN 1945
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR APRIL 14
HIGH 80 IN 1945
LOW 21 IN 1923
PRECIP 1.86 IN. IN 1935
SNOWFALL 8.4 IN. IN 1953
PEAK GUST 71e MPH W IN 1943
RECORDS FOR APRIL 15
HIGH 81 IN 1896
LOW 23 IN 1943
PRECIP 1.75 IN. IN 2007
SNOWFALL 1.0 IN. IN 1916, 1962
PEAK GUST 66 MPH E IN 2007
TODAY’S REPORT PREPARED BY: Kaitlin Geagan
