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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
THURSDAY, MAY 5, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0434E
SUNSET: 1848E
WARMER WITH BEAUTIFUL WEATHER ATOP GREAT BLUE HILL….
Today was partly cloudy with an almost perfect visibility of
85 miles at the 1 P.M. observation. Wind was on the lighter
side, with an average speed a little below 10 mph. A northwesterly
wind is being contested by a sea breeze from the northeast.
Dew points are below freezing with temperatures in the mid
60’s.
The high so far today is 66F, which is 2 degrees above the
normal maximum of 64F. The low since midnight is 46F, which
is a degree above the normal minimum of 45F.
————————————————————–
PRELIMINARY STATS FOR APRIL 2022
TEMPERATURE, Deg. F
Avg. Max. 57.5 [+1.2]
Avg. Min. 38.7 [+0.8]
Mean 48.1 [+1.0]
24-hour corrected mean: 47.3
Max. for month: 71F on the 13th
Min. for month: 32F on the 18th
HEATING DEGREE DAYS
Total heating units: 501 [ -39]
Total for the season: 5364 [-523]
Total for last season: 5341
PRECIPITATION, Inches
Total: 2.97 [-1.79]
Greatest in 24 hrs: 0.96 on the 19th
SNOWFALL, Inches
Total: TRACE [-2.8]
Greatest in 24 hrs: TRACE on the 17th
WIND, mph
Avg. uncorrected wind speed: 12.5 mph
Avg. corrected wind speed: 12.9 mph
Prevailing wind direction: NW [20%]
Peak gust and direction: 56 WNW on the 1st
SUNSHINE:
Campbell-Stokes card minutes: 13032 of a possible 23250, or 56%
Astronomical total minutes: 13505 of a possible 24106, or 56%
————————————————————–
Today’s Observations:
7 A.M.
Weather: Scattered cirrocumulus
Temperature: 51F; Dew Point: 47F; Relative Humidity: 85%
Wind: NNW @ 7 kts
Sea-level pressure: 1017.1 mb; 30.03 in. Hg: rising steadily
Visibility: 80 miles
6-hr Max temp: 51F
6-hr Min temp: 46F
24-hr Precip: 0.14 ins.
BHO SA 1155 250 SCT 80 171/51/47/3407/003/ 8/009 52020 70014
10051 20046
10 A.M.
Weather: Clear, few cumulus offshore NE-E-S
Temperature: 58F; Dew Point: 38F; Relative Humidity: 47%
Wind: NNE @ 7 kts
Sea-level pressure: 1017.6 mb; 30.05 in Hg: rising, then more
slowly
Visibility: 80 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 CLR 80 176/58/38/0207/005/ FEW CU OFFSHR NE-E-S/
8/100 51005
1 P.M.
Weather: Thin broken cirrostratus
Temperature: 65F, Dew point: 31F; Relative Humidity: 28%
Wind: NNW @ 7 kts
Sea-level pressure: 1016.9 mb; 30.02 in Hg, steady then falling
Visibility: 80 miles
6-hr Max temp: 66F
6-hr Min temp: 51F
6-hr Precip: 0.00 ins.
BHO SA 1755 250 -BKN 80 169/65/31/3307/002/ 8/006 58007
10066 20051
————————————————————–
SUMMARY FOR WEDNESDAY, MAY 4, 2022
TEMPERATURE (DEGREES F)
MAX…….52 NORMAL…..64
MIN…….45 NORMAL…..45
MEAN……49 NORMAL…..54
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…….-5
TOTAL DEPARTURE FOR THE MONTH……………….-11 [-3.0 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY………….16 DEPARTURE……..+5
TOTAL HEATING UNITS FOR THE MONTH………….56 DEPARTURE…….+10
TOTAL HEATING UNITS FOR THE SEASON……….5420 DEPARTURE……-513
TOTAL HEATING UNITS LAST SEASON TO DATE…..5384 DEPARTURE…….+36
COOLING DEGREE DAYS (SEASON: JAN 2022 THRU DEC 2022)
TOTAL COOLING UNITS FOR YESTERDAY…………..0 DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH…………..0 DEPARTURE……..-1
TOTAL COOLING UNITS FOR THE SEASON………….0 DEPARTURE……..-4
TOTAL COOLING UNITS LAST SEASON TO DATE……..0 DEPARTURE………0
PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….19 NW @ 8:53 P.M.
AEROVANE……………….18 SE @ 7:53 A.M.
VECTOR #2 (Instantaneous)..20 @ 8:53 P.M.
DAVIS #2 ………………18 SE @ 7:53 A.M.
RMY #2 (Instantaneous)…..19 ENE @ 7:52 A.M.
ASOS………..OUT OF SERVICE D/T RENOVATIONS
VECTOR #1……OUT OF SERVICE D/T RENOVATIONS
DAVIS #1…….OUT OF SERVICE D/T RENOVATIONS
RMY #1………OUT OF SERVICE D/T RENOVATIONS
MERLIN………OUT OF SERVICE D/T RENOVATIONS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………13 SE @ 7:54 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..15 @ 8:53 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………15 SE @ 7:56 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..15 SE @ 7:56 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……..OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE….OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE RMY #1 AVERAGE……OUT OF SERVICE D/T RENOVATIONS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….. 5.5 SE [132 total miles]
VECTOR #2……………… 6.4
DAVIS #2………………. 5.9 ENE
RMY #2………………… 6.3 ENE
RMY #1……….OUT OF SERVICE D/T RENOVATIONS
ASOS…………OUT OF SERVICE D/T RENOVATIONS
VECTOR #1…….OUT OF SERVICE D/T RENOVATIONS
DAVIS #1……..OUT OF SERVICE D/T RENOVATIONS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….0.14 DEPARTURE…..+0.01
TOTAL PRECIPITATION FOR THE MONTH………….0.58 DEPARTURE…..+0.08
TOTAL PRECIPITATION FOR THE YEAR………….16.86 DEPARTURE…..-2.42
PRELIMINARY CLIMATE SUMMARY FOR APRIL CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/PEAK GUST/AERO/RMY GUST
AERO: Aerovane wind recording system gust
RMY: R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M: Missing data
4/01 57/35/46/+5/0.41/0.0/183/24 56 WNW AERO 55 WNW RMY 58
4/02 52/34/43/+2/0.00/0.0/697/91 45 WNW AERO 43 WNW RMY 47
4/03 51/36/44/+2/0.03/0.0/215/28 23 NE AERO 18 NE RMY 23
4/04 56/35/46/+4/0.02/0.0/610/79 35 NW AERO 30 NW RMY 34
4/05 62/37/50/+7/0.00/0.0/698/90 25 SSW AERO 24 S RMY 25
4/06 44/39/42/-1/0.22/0.0/000/00 33 ENE AERO 32 E RMY 34
4/07 52/38/45/+1/0.06/0.0/000/00 50 ESE AERO 50 ESE RMY 53
4/08 61/42/52/+8/0.24/0.0/470/60 45 ESE AERO 45 SE RMY 47 TSTM
4/09 59/39/49/+5/0.10/0.0/291/37 40 S AERO 40 S RMY 43
4/10 55/35/45/0/T/0.0/560/71 35 NW AERO 32 NW RMY 34
4/11 62/35/49/+4/T/0.0/728/92 31 NNW AERO 30 NNW RMY 31
4/12 68/46/57/+11/0.06/0.0/349/44 32 W AERO 30 W RMY 31
4/13 71/47/59/+13/0.00/0.0/670/84 33 S AERO 31 S RMY 35
4/14 50/43/47/0/0.16/0.0/000/00 19 N AERO 18 N RMY 18
4/15 66/43/55/+8/T/0.0/691/86 37 S AERO 37 S RMY 39
4/16 70/40/55/+8/0.40/0.0/314/39 42 S AERO 53 SSW RMY 45
4/17 48/36/42/-6/0.01/T/461/57 38 N AERO 36 N RMY 39
4/18 55/32/44/-4/0.00/0.0/616/76 35 E AERO 30 E RMY 34
4/19 55/39/47/-2/0.96/0.0/325/40 55 S AERO 53 S RMY 58
4/20 56/37/47/-2/0.00/0.0/808/99 40 WNW AERO 37 WNW RMY 41
4/21 60/40/50/0/T/0.0/541/66 45 SSW AERO 41 SSW RMY 47
4/22 65/46/56/+6/0.00/0.0/699/85 39 WNW AERO 35 WNW RMY 39
4/23 66/40/53/+3/0.00/0.0/577/70 24 NW AERO 22 W RMY 25
4/24 50/40/45/-6/T/0.0/165/20 29 ENE AERO 26 ENE RMY 30
4/25 59/41/50/-1/0.00/0.0/464/56 22 S AERO 21 S RMY 23
4/26 54/42/48/-4/0.24/0.0/000/00 20 SSW AERO 18 S RMY 21
4/27 56/39/48/-4/0.06/0.0/350/42 48 NW AERO 47 NW RMY 48
4/28 53/35/44/-8/0.00/0.0/669/80 45 NNW AERO 45 NW RMY 46
4/29 55/35/45/-8/0.00/0.0/664/79 40 NNW AERO 39 NNW RMY 39
4/30 58/34/46/-7/0.00/0.0/690/82 24 NNW AERO 23 NNW RMY 24
PRELIMINARY CLIMATE SUMMARY FOR MAY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/PEAK GUST/AERO/RMY GUST
AERO: Aerovane wind recording system gust
RMY: R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M: Missing data
5/01 69/40/55/+2/0.00/…/.. 25 SSE AERO 25 SSE RMY 27
5/02 58/42/50/-4/0.21/…/.. 21 NE AERO 19 NE RMY 20
5/03 57/43/50/-4/…/…/.. 23 ENE AERO 22 ENE RMY 24
5/04 52/45/49/-5/…./…/.. 19 NW AERO 18 SE RMY 19
5/05 The low since midnight is 45F, the daily normal low is 45F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR MAY 5
HIGH 92F IN 1949
LOW 30F IN 1891
PRECIP 2.74 INCHES IN 1922
SNOWFALL 3.0 INCHES IN 1917
PEAK GUST 58 MPH S IN 1966 & 58e MPH SW IN 1976
RECORDS FOR MAY 6
HIGH 90F IN 1930
LOW 29F IN 1891
PRECIP 1.04 INCHES IN 1890
SNOWFALL TRACE IN 1917, 1952, 1996
PEAK GUST 65 MPH SSE IN 1989
TODAY’S REPORT PREPARED BY: Benjamin Turner
