Tuesday, July 5, 2022

BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

TUESDAY, JULY 5, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0413E
SUNSET:  1924E

MAINLY CLOUDY TODAY WITH SHOWERS DEVELOPING THIS AFTERNOON….

Today is a big difference from yesterday. Not much in the way
of sunshine has been observed today as clouds moved in very
early this morning and have stuck around through the day. An
area of showers has moved into the region with light rain
showers ongoing during the 1pm observation. 0.02″ of rain has
been measured so far.

Of course with cloudy skies, the temperature isn’t able to get
as warm as the past few days. The high so far today has only
been 73F, with readings dropping back into the upper 60s with
the onset of the rain. The dew point on the other hand has been
increasing all day, starting out in the low 50s early this
morning, rising to the mid 60s early this afternoon. So it
definitely feels muggier this afternoon.

The wind has been light all day, only averaging around 9mph
for the day. The peak gust so far for the day occurred around
5am with only 19mph measured.

Visibility has been limited today, especially when compared to
the past few days. We could see up to 45 miles early this
morning, but its down to only 20 miles early this afternoon
thanks to a combination of thin fog from the rain and general
haziness.

The high so far today is 73F, which is 8 degrees below the
normal maximum of 81F. The low since midnight is 63F, which
is equal to the normal minimum of 63F.

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PRELIMINARY STATS FOR JUNE 2022

TEMPERATURE, Deg. F
Avg. Max. 76.3 [+0.9] Avg. Min. 57.0 [-0.6] Mean      66.7 [+0.2] 24-hour corrected mean: 65.3
Max. for month: 92F on the 26th
Min. for month: 48F on the 19th and 20th

HEATING DEGREE DAYS
Total heating units:     44 [-022] Total for the season:  5610 [-600] Total for last season: 5597

COOLING DEGREE DAYS
Total cooling units:     95 [-016] Total for the season:   155 [+016] Total for last season:  226

PRECIPITATION, Inches
Total: 2.81 [-1.82] Greatest in 24 hrs: 0.84 on the 27th

WIND, mph
Avg. uncorrected wind speed:  9.7 mph
Avg. corrected wind speed:   10.4 mph
Prevailing wind direction:   SSW [15%] Peak gust and direction:  43 WNW on the 9th

SUNSHINE:
Campbell-Stokes card minutes: 16338 of a possible 26376 or 62%
Astronomical total minutes: 16967 of a possible 27411 or 62%

————————————————————–

Today’s Observations:

7 A.M.
Weather: Overcast altocumulus, few breaks in overcast N-E
Temperature: 69F; Dew Point: 52; Relative Humidity: 54%
Wind: WSW @ 6 kts, wind light
Sea-level pressure: 1019.0 mb; 30.09 in. Hg: falling then rising
Visibility: 45 miles, hazy
6-hr Max temp: 69F
6-hr Min temp: 63F
24-hr Precip: 0.00 ins.
BHO SA 1155 E90 OVC 45 190/69/52/2506/009/ FEW BINOVC N-E HAZY
WND LGT/ 8/07/ 53003 10069 20063

10 A.M.
Weather: Broken altocumulus, overcast cirrostratus
Temperature: 73F; Dew Point: 61F; Relative Humidity: 66%
Wind: S @ 5 kts, wind light
Sea-level pressure: 1017.8 mb; 30.06 in Hg: falling then steady
Visibility: 40 miles, hazy
3-hr Precip: 0.00 ins.
BHO SA 1455 E90 BKN 180 OVC 40 178/73/61/1905/006/ HAZY WND LGT/
8/077 56012

1 P.M.
Weather: Overcast nimbostratus, very light rain showers
Temperature: 68F, Dew point: 66F; Relative Humidity: 93%
Wind: SSW @ 5 kts, wind light
Sea-level pressure: 1016.5 mb; 30.02 in Hg: falling, then more rapidly
Visibility: 20 miles, thin fog
6-hr Max temp: 73F
6-hr Min temp: 69F
6-hr Precip: 0.02 ins.
BHO SA 1755 E75 OVC 20RW- 165/68/66/2105/002/ RW-B25 THN F ALQDS
PCPN VRY LGT WND LGT/ 8/02/ 58013 6002/ 10073 20068

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SUMMARY FOR MONDAY, JULY 4, 2022

TEMPERATURE (DEGREES F)
MAX…….83   NORMAL…..81
MIN…….60   NORMAL…..63
MEAN……72   NORMAL…..72

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……..0
TOTAL DEPARTURE FOR THE MONTH………………+13 [+3.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY…………….0  DEPARTURE………0
TOTAL HEATING UNITS FOR THE MONTH…………….0  DEPARTURE……..-2
TOTAL HEATING UNITS FOR THE SEASON……………0  DEPARTURE……..-2
TOTAL HEATING UNITS LAST SEASON TO DATE………20  DEPARTURE…….-20

COOLING DEGREE DAYS (SEASON: JAN 2022 THRU DEC 2022)
TOTAL COOLING UNITS FOR YESTERDAY…………….7  DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH……………39  DEPARTURE…….+12
TOTAL COOLING UNITS FOR THE SEASON………….194  DEPARTURE…….+28
TOTAL COOLING UNITS LAST SEASON TO DATE……..234  DEPARTURE…….-40

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….25 WNW @  1:35 P.M.
AEROVANE……………….N/A
VECTOR #2 (Instantaneous)..28     @  1:35 P.M.
DAVIS #2 ………………23 W   @  2:42 P.M.
RMY #2 (Instantaneous)…..26 WNW @  1:35 P.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………………17 WNW @  4:21 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..18     @  4:08 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………18 WNW @  4:08 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..18 WNW @  4:08 P.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…….. 8.4 WNW [202 total miles] VECTOR #2……………… 9.1
DAVIS #2………………. 9.0 NW
RMY #2………………… 9.0 NW
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……..0.00 DEPARTURE…..-0.11
TOTAL PRECIPITATION FOR THE MONTH…………..0.25 DEPARTURE…..-0.20
TOTAL PRECIPITATION FOR THE YEAR…………..20.64 DEPARTURE…..-7.04

PRELIMINARY CLIMATE SUMMARY FOR JUNE 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

6/01  62/52/57/-5/0.08/009/01             21 SSW AERO N/A    RMY 22
6/02  67/53/60/-2/T/308/34                20 S   AERO N/A    RMY 21
6/03  64/52/58/-7/0.05/000/00             22 ENE AERO N/A    RMY 22
6/04  75/52/64/+1/0.01/554/61             28 SSW AERO N/A    RMY 29
6/05  76/50/63/0/0.00/882/97              28 WNW AERO N/A    RMY 28
6/06  80/56/68/+5/0.00/783/86             22 S   AERO N/A    RMY 23
6/07  80/60/70/+6/0.02/619/68             36 SSW AERO N/A    RMY 38
6/08  79/60/70/+6/0.42/537/59             36 S   AREO N/A    RMY 39
6/09  80/59/70/+6/0.71/466/51             43 WNW AERO N/A    RMY 45
6/10  75/55/65/0/0.00/803/88              34 WNW AERO N/A    RMY 33
6/11  78/58/68/+3/0.00/494/54             27 W   AERO N/A    RMY 27
6/12  77/59/68/+3/0.00/484/53             31 SSW AERO N/A    RMY 32
6/13  82/64/73/+7/0.17/650/71             26 NW  AERO N/A    RMY 25
6/14  81/58/70/+4/0.00/869/95             23 NW  AERO N/A    RMY 24
6/15  73/59/66/0/0.00/632/69              22 ENE AERO N/A    RMY 23
6/16  71/58/65/-2/0.00/421/46             34 SSW AERO N/A    RMY 37
6/17  82/64/73/+6/0.20/559/61             35 NW  AERO N/A    RMY 35 TSTM
6/18  68/51/60/-7/T/440/48                36 NW  AERO N/A    RMY 37
6/19  60/48/54/-14/0.31/028/03            28 NNW AERO N/A    RMY 27
6/20  77/48/63/-5/0.00/834/91             31 NNW AERO N/A    RMY 30
6/21  77/54/66/-2/0.00/771/84             24 S   AERO N/A    RMY 25
6/22  73/56/65/-4/0.00/651/71             26 ESE AERO N/A    RMY 28
6/23  75/58/67/-2/0.00/459/50             27 SE  AERO N/A    RMY 29
6/24  80/57/69/0/0.00/541/59              15 W   AERO N/A    RMY 16
6/25  87/62/75/+5/0.00/861/94             18 NNW AERO N/A    RMY 18
6/26  92/67/80/+10/0.00/852/93            33 SSW AERO N/A    RMY 35
6/27  74/61/68/-2/0.84/064/07             35 SW  AERO N/A    RMY 36
6/28  80/55/68/-2/0.00/814/89             22 NW  AERO N/A    RMY 21
6/29  83/62/73/+2/0.00/759/83             22 SSW AERO N/A    RMY 24
6/30  80/61/71/0/0.00/823/90              28 NW  AERO N/A    RMY 27

PRELIMINARY CLIMATE SUMMARY FOR JULY 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

7/1   90/63/77/+6/0.00/704/77             33 S   AERO N/A    RMY 34
7/2   83/67/75/+4/0.25/228/25             25 WSW AERO N/A    RMY 26 TSTM
7/3   84/65/75/+3/0.00/547/60             25 WNW AERO N/A    RMY 26
7/4   83/60/72/0/0.00/838/92              25 WNW AERO N/A    RMY 26

7/5  The low since midnight is 63F, the daily normal low is 63F

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)

RECORDS FOR JULY 5
HIGH 98F IN 1911
LOW 48F IN 1920, 1927 & 1979
PRECIP 1.45 INS IN 1922
PEAK GUST 49e N IN 1944

RECORDS FOR JULY 6
HIGH 99F IN 2010
LOW 47F IN 1979
PRECIP 1.43 INS IN 2005
PEAK GUST 56e MPH NNW IN 1942, 56 MPH WNW IN 1999

TODAY’S REPORT PREPARED BY: Matt Douglas