Wednesday, August 2, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
WEDNESDAY, AUGUST 2, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0438E
SUNSET: 1903E
ANOTHER SPECTACULAR SUMMER DAY AT BLUE HILL WITH CONTINUED
PLEASANT TEMPERATURES AND DRY AIR…
Abundant sunshine this morning has become more of a mix of
sun and clouds once again today as cumulus clouds have
popped up dotting the sky. The temperature has only reached
the mid 70s this afternoon, which is below normal for the
date.
The best part of this weather is the relatively low dew
points which have been in the low 50s all day. This is very
refreshing air for this time of year, and is perfect for any
and all outdoor activities.
The wind has been generally on the light side once again
today, with a variable direction. The average speed for the
day so far is around 8mph. The highest gust so far today
occurred right around midnight and only registered at around
17mph.
Visibility has been excellent all day sitting at around 80
miles! Just absolutely spectacular for early August!
The maximum temperature so far today is 75F, this is 7 degrees
below the normal high of 82F. The minimum temperature today is
54F, which is 10 degrees below the normal low of 64F.
————————————————————–
PRELIMINARY STATS FOR JULY 2023
TEMPERATURE, Deg. F
Avg. Max. 82.7 [+1.0]
Avg. Min. 65.7 [+1.9]
Mean 74.2 [+1.5]
24-hour corrected mean: 73.5
Max. for month: 92F on the 6th
Min. for month: 56F on the 30th
HEATING DEGREE DAYS
Total heating units: 0 [-007]
Total for the season: 0 [-007]
Total for last season: 0
COOLING DEGREE DAYS
Total cooling units: 294 [+046]
Total for the season: 422 [+035]
Total for last season: 507
PRECIPITATION, Inches
Total: 9.59 [+6.12]
Greatest in 24 hrs: 2.56 on the 16th
SNOWFALL, Inches
Total: 0.0 [0.0]
Greatest in 24 hrs: N/A
WIND, mph
Avg. uncorrected wind speed: 8.6 mph
Avg. corrected wind speed: 9.3 mph
Prevailing wind direction: South-southwest [23%]
Peak gust and direction: 61 WNW on the 27th
SUNSHINE:
Campbell-Stokes card minutes: 15312 of a possible 26682, or 57%
Astronomical total minutes: 15913 of a possible 27749, or 57%
————————————————————–
Today’s Observations:
7 A.M.
Weather: Clear, few towering cumulus distant S, few altocumulus
castellanus distant E-SE, thin smoke layer aloft distant NW-NNE
and distant E-SSE
Temperature: 60F; Dew Point: 51F; Relative Humidity: 82%
Wind: N @ 6 kts, wind light
Sea-level pressure: 1023.9 mb; 30.24 in. Hg: rising, then more slowly
Visibility: 80 miles
6-hr Max temp: 60F
6-hr Min temp: 54F
24-hr Precip: 0.00 inches
BHO SA 1155 CLR 80 239/60/51/3506/024/ FEW TCU DSNT S FEW ACC DSNT
E-SE THN K LYR ALF DSNT NW-NNE AND DSNT E-SSE WND LGT/ 8/280 51014
10060 20054
10 A.M.
Weather: Clear, few cumulus all quadrants, few cirrus distant SW-NNW,
thin smoke layer aloft NE-S
Temperature: 70F; Dew Point: 51F; Relative Humidity: 50%
Wind: N @ 4 kts, wind light
Sea-level pressure: 1024.1 mb; 30.24 in. Hg: rising, then steady
Visibility: 80 miles
3-hr Precip: 0.00 inches
BHO SA 1455 CLR 80 241/70/51/3504/024/ FEW CU ALQDS FEW CI DSNT SW-NNW
THN K LYR ALF NE-S WND LGT/ 8/201 51002
1 P.M.
Weather: Scattered cumulus, scattered thin cirrus
Temperature: 73F; Dew Point: 51F; Relative Humidity: 47%
Wind: NW @ 6 kts, wind light
Sea-level pressure: 1023.1mb; 30.21 in. Hg: falling, then steady
Visibility: 80 miles
6-hr Max temp: 75F
6-hr Min temp: 60F
6-hr Precip: 0.00 inches
BHO SA 1755 45 SCT 250 -SCT 80 231/73/51/3106/021/ WND LGT/
8/201 56010 10075 20060
————————————————————–
SUMMARY FOR TUESDAY, AUGUST 1, 2023
TEMPERATURE (DEGREES F)
MAX…….76 NORMAL…..82
MIN…….58 NORMAL…..64
MEAN……67 NORMAL…..73
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….-6
TOTAL DEPARTURE FOR THE MONTH………………….-6 [-6.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY…………….0 DEPARTURE………0
TOTAL HEATING UNITS FOR THE MONTH…………….0 DEPARTURE………0
TOTAL HEATING UNITS FOR THE SEASON……………0 DEPARTURE……..-7
TOTAL HEATING UNITS LAST SEASON TO DATE……….0 DEPARTURE………0
COOLING DEGREE DAYS (SEASON: JAN 2023 THRU DEC 2023)
TOTAL COOLING UNITS FOR YESTERDAY…………….2 DEPARTURE……..-6
TOTAL COOLING UNITS FOR THE MONTH…………….2 DEPARTURE……..-6
TOTAL COOLING UNITS FOR THE SEASON………….424 DEPARTURE…….+29
TOTAL COOLING UNITS LAST SEASON TO DATE……..518 DEPARTURE…….-94
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)……….E24 NW @ 11:38 A.M.
VECTOR #1 (1-Sec)……….24 NW @ 11:37 A.M.
VECTOR #2 (1-Sec)……….23 NW @ 11:38 A.M.
DAVIS #1……………….22 NW @ 11:38 A.M.
DAVIS #2 ………………21 NW @ 11:38 A.M.
RMY #1 (Instantaneous)…..24 NW @ 11:37 A.M.
RMY #2 (Instantaneous)…..23 NW @ 11:38 A.M.
MERLIN…………………20 NW
RICHARDS (C5C) (Inst)……24 @ 11:37 A.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………12 NW @ 10:04 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..15 @ 11:39 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..18 @ 11:40 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………15 WNW @ 11:39 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………17 NW @ 11:40 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..14 NW @ 11:39 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..17 NW @ 11:40 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………15 @ 11:39 A.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…………7.9 NNW [189 total miles]
VECTOR #1………………….8.7
VECTOR #2………………….8.6
DAVIS #1…………………..8.3 NNW
DAVIS #2…………………..8.4 NNW
RMY #1…………………….8.2 NNW
RMY #2…………………….8.6 NNW
RICHARDS (C5C)……………..8.7
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH…………..0.00 DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE YEAR…………..34.77 DEPARTURE…..+3.94
————————————————————–
PRELIMINARY CLIMATE SUMMARY FOR JULY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/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
7/1 80/61/71/0/0.00/567/62 17 SSE VEC1 16 SSE RMY 17
7/2 74/63/69/-2/0.34/027/03 35 S VEC1 35 S RMY 35
7/3 79/63/72/-1/0.40/265/29 18 NNW VEC1 18 NNW RMY 17 TSTM
7/4 71/65/68/-4/0.81/000/00 17 NE VEC1 18 NE RMY 17 TSTM
7/5 88/66/77/+5/0.00/720/79 17 S VEC1 16 SE RMY 15
7/6 92/69/81/+9/0.00/683/75 23 SSW VEC1 22 SSW RMY 23
7/7 87/70/78/+6/0.00/763/84 23 SW VEC1 22 SW RMY 23
7/8 84/70/77/+5/0.00/463/51 20 W VEC1 20 W RMY 19
7/9 81/69/75/+2/T/200/22 17 ESE VEC1 18 E RMY 17
7/10 71/66/69/-4/0.68/000/00 22 ESE VEC1 21 ESE RMY 22
7/11 85/62/74/+1/0.00/796/88 24 WNW VEC1 25 WNW RMY 25
7/12 91/70/81/+8/0.00/713/79 21 WSW VEC1 22 SSW RMY 20
7/13 88/67/78/+5/0.13/695/77 35 SSW VEC1 35 SSW RMY 38 TSTM
7/14 78/65/72/-1/0.18/342/38 29 SSW VEC1 32 SSW RMY 32 TSTM
7/15 86/70/78/+5/T/548/61 28 SSW VEC1 30 SSW RMY 29 TSTM
7/16 76/71/74/+1/2.56/000/00 40 S VEC1 41 SSW RMY 48 TSTM
7/17 86/71/79/+6/0.00/699/78 21 WSW VEC1 21 W RMY 23
7/18 84/70/77/+4/0.00/402/45 28 SSW VEC1 28 SSW RMY 27
7/19 83/68/76/+3/0.00/554/62 23 W VEC1 23 W RMY 22
7/20 82/64/73/+0/0.00/838/94 17 NNE VEC1 17 SE RMY 18
7/21 79/62/71/-2/1.99/178/20 30 NW VEC1 31 NW RMY 32 TSTM
7/22 81/64/73/0/0.00/656/74 15 W VEC1 14 W RMY 16
7/23 85/65/75/+2/0.00/805/91 21 NW VEC1 20 W RMY 21
7/24 85/67/76/+3/0.00/706/80 23 S VEC1 24 S RMY 24
7/25 85/64/75/+2/1.02/441/50 29 NNE VEC1 30 NNW RMY 29 TSTM
7/26 85/63/74/+1/0.00/817/93 23 W VEC1 23 W RMY 23
7/27 88/68/78/+5/0.43/368/42 61 WNW VEC1 63 WNW RMY 66 TSTM
7/28 88/68/78/+5/0.00/840/96 23 SW VEC1 23 SW RMY 23
7/29 88/62/75/+2/1.04/279/32 35 NNE VEC1 37 NNE RMY 36 TSTM
7/30 75/56/66/-7/0.00/827/95 24 N VEC1 24 NNW RMY 25
7/31 80/59/70/-3/0.01/721/83 35 WNW VEC1 34 WNW RMY 35
DAILY RECORDS
07/16/2023: NEW RECORD DAILY PRECIPITATION OF 2.56 INCHES;
SURPASSES THE PREVIOUS RECORD OF 0.98 INCHES IN 2014
07/16/2023: NEW RECORD HIGH DAILY MINIMUM TEMPERATURE OF 71F;
TIES THE RECORD OF 71F SET IN 1901, 1958, 1968, AND 2013
07/27/2023: NEW RECORD PEAK WIND GUST OF 61 MPH WNW;
BEATS THE OLD RECORD OF 47 MPH ENE SET IN 1984
————————————————————–
PRELIMINARY CLIMATE SUMMARY FOR AUGUST CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/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
8/1 76/58/67/-6/0.00/567/62 24 NW VEC1 24 NW RMY 24
8/2 The low since midnight is 54F, the daily normal low is 64F
————————————————————–
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR AUGUST 2
HIGH 101F IN 1975 [STATION RECORD MAXIMUM – Tied with 8/10/1949]
LOW 50F IN 1929, 1947
PRECIP 1.94 INCHES IN 1946
PEAK GUST 50 MPH SW IN 2006
RECORDS FOR AUGUST 3
HIGH 96F IN 1930
LOW 50F IN 1976
PRECIP 1.45 INCHES IN 1979
PEAK GUST 52 MPH NW IN 2008 [TSTM]
TODAY’S REPORT PREPARED BY: Matt Douglas
