Sunday, July 31, 2022

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

SUNDAY, JULY 31, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0436E
SUNSET: 1905E

INCREASING CLOUDS THIS AFTERNOON, BUT WARM AND DRY AIR CONTINUES….

This morning started with plenty of brilliant sunshine and very
comfortable air. Temperatures rapidly rose from the upper 60s
early this morning to the mid 80s by noon time. While temperatures
are on the warm side, humidity levels are quite delightful for
this time of year with the dew point holding generally in the mid
to upper 50s.

Clouds have been on the increase this afternoon, but they are
mainly of the high thin cirrus variety, as such plenty of filtered
sunshine remains. All in all, not a bad day at all.

The wind today has been on the light side only averaging around
8mph for the day so far. A gust to 23mph has occurred earlier
this afternoon.

Visibility has been superb for this time of year holding around
80 miles all day!

The high so far today is 87F, which is 5 degrees above the
normal maximum of 82F. The low since midnight is 64F, which
is equal to the normal minimum of 64F.

The yearly rain deficit has now reached 9.39″ below normal!
Most of the area is under a severe drought.

With only 0.80″ of rain for the month of July so far, we decided
to take a look at the driest Julys on record here at Blue Hill.
Here is the list. If the month ended today, this year would
rank 4th on the list.

BHO Lowest July Precipitation, inches (1885-2021):

1. 0.13 in 1953
2. 0.33 in 1957
3. 0.72 in 1968
4. 0.85 in 1917
5. 0.87 in 1937
6. 0.92 in 1965
7. 1.08 in 1939
8. 1.11 in 1983
9. 1.13 in 1970
10. 1.14 in 1946

Average temperatures for the month have really creeped up the
rankings list despite the seemingly pleasant start to the month.
Through yesterday, the 24-hour adjusted mean temperature is
75.3F. This means the month is likely to go down as the warmest
July on record. Final stats will be ready in the next few days.

BHO Warmest July 24-Hour Adjusted Mean Temperature, deg F (1885-2021):

1. 75.1 in 2010
2. 74.9 in 1952
3. 74.5 in 2019
4. 74.1 in 1994
74.1 in 2013
6. 74.0 in 2011
74.0 in 2016
8. 73.8 in 1999
9. 73.6 in 2018
73.6 in 2020

The stats above were compiled by our Chief Scientist Mike Iacono.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Clear, few cirrus distant SSW-WSW
Temperature: 72F; Dew Point: 59F; Relative Humidity: 64%
Wind: NNW @ 5 kts, wind light
Sea-level pressure: 1021.9 mb; 30.18 in. Hg: rising, then more slowly
Visibility: 80 miles
6-hr Max temp: 72F
6-hr Min temp: 64F
24-hr Precip: 0.00 ins.
BHO SA 1155 CLR 80 219/72/59/3305/018/ FEW CI DSNT SSW-WSW WND LGT/
8/001 51007 10072 20064

10 A.M.
Weather: Clear, few cumulus all quadrants, few cirrus SSW-NW
Temperature: 82F; Dew Point: 59F; Relative Humidity: 46%
Wind: WSW @ 4 kts, wind light
Sea-level pressure: 1021.3 mb; 30.16 in Hg: steady, then falling
Visibility: 80 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 CLR 80 213/82/59/2504/016/ FEW CU ALQDS FEW CI SSW-NW
WND LGT/ 8/101 58006

1 P.M.
Weather: Broken cirrus, few cumulus all quadrants
Temperature: 85F, Dew point: 57F; Relative Humidity: 39%
Wind: WSW @ 7 kts
Sea-level pressure: 1019.8 mb; 30.11 in Hg: falling, then more rapidly
Visibility: 80 miles
6-hr Max temp: 87F
6-hr Min temp: 72F
6-hr Precip: 0.00 ins.
BHO SA 1755 E250 BKN 80 198/85/57/2407/011/ FEW CU ALQDS/
8/102 58015 10087 20072

————————————————————–

SUMMARY FOR SATURDAY, JULY 30, 2022

TEMPERATURE (DEGREES F)
MAX…….88 NORMAL…..82
MIN…….69 NORMAL…..64
MEAN……79 NORMAL…..73

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……..+6
TOTAL DEPARTURE FOR THE MONTH……………….+111 [+3.5 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……..-7
TOTAL HEATING UNITS FOR THE SEASON……………0 DEPARTURE……..-7
TOTAL HEATING UNITS LAST SEASON TO DATE………26 DEPARTURE…….-26

COOLING DEGREE DAYS (SEASON: JAN 2022 THRU DEC 2022)
TOTAL COOLING UNITS FOR YESTERDAY……………14 DEPARTURE……..+6
TOTAL COOLING UNITS FOR THE MONTH…………..341 DEPARTURE……+101
TOTAL COOLING UNITS FOR THE SEASON………….496 DEPARTURE……+117
TOTAL COOLING UNITS LAST SEASON TO DATE……..379 DEPARTURE……+117

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….35 NW @ 12:36 P.M.
AEROVANE……………….N/A
VECTOR #2 (Instantaneous)..36 @ 12:18 P.M.
DAVIS #2 ………………30 WNW @ 10:43 A.M.
RMY #2 (Instantaneous)…..34 WNW @ 12:18 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………………24 NW @ 12:37 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..23 @ 11:13 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………22 NW @ 11:13 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..22 NW @ 11:13 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……..10.6 NW [255 total miles] VECTOR #2………………11.3
DAVIS #2……………….11.1 NW
RMY #2…………………11.1 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…..-0.12
TOTAL PRECIPITATION FOR THE MONTH…………..0.80 DEPARTURE…..-2.55
TOTAL PRECIPITATION FOR THE YEAR…………..21.19 DEPARTURE…..-9.39

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 73/63/68/-4/0.12/027/03 37 SSW AERO N/A RMY 39
7/6 83/64/74/+2/T/701/77 37 SSW AERO N/A RMY 38
7/7 79/62/71/-1/0.00/645/71 27 SSW AERO N/A RMY 29
7/8 85/60/73/+1/0.00/472/52 24 WSW AERO N/A RMY 24
7/9 79/63/71/-2/0.00/843/93 21 N AERO N/A RMY 22
7/10 81/57/69/-4/0.00/851/94 22 SSE AERO N/A RMY 24
7/11 86/60/73/0/0.00/849/94 31 SSW AERO N/A RMY 33
7/12 86/63/75/+2/T/713/79 38 SSW AERO N/A RMY 39
7/13 89/67/78/+5/0.00/820/91 22 WNW AERO N/A RMY 22
7/14 86/64/75/+2/0.14/675/75 26 WNW AERO N/A RMY 27
7/15 85/61/73/0/0.00/862/96 21 S AERO N/A RMY 22
7/16 84/63/74/+1/0.00/439/49 25 SSW AERO N/A RMY 26
7/17 89/65/77/+4/0.00/662/74 31 SSW AERO N/A RMY 33 TSTM
7/18 80/68/74/+1/0.22/009/01 35 SSW AERO N/A RMY 36
7/19 91/70/81/+8/T/714/80 37 WNW AERO N/A RMY 38
7/20 96/72/84/+11/0.00/801/90 23 WNW AERO N/A RMY 23
7/21 92/71/82/+9/0.00/693/78 39 SSW AERO N/A RMY 41
7/22 94/72/83/+10/0.00/834/94 25 W AERO N/A RMY 25
7/23 96/72/84/+11/0.00/850/96 22 W AERO N/A RMY 22
7/24 99/73/86/+13/0.00/830/94 39 SW AERO N/A RMY 41
7/25 88/74/81/+8/T/291/33 37 SW AERO N/A RMY 41
7/26 83/66/75/+2/0.00/…/.. 24 W AERO N/A RMY 25
7/27 86/61/74/+1/0.00/…/.. 21 NW AERO N/A RMY 20
7/28 87/67/77/+4/0.04/…/.. 35 SSW AERO N/A RMY 39
7/29 91/70/81/+8/0.01/…/.. 34 WSW AERO N/A RMY 38
7/30 88/69/79/+6/0.02/…/.. 35 NW AERO N/A RMY 34