Friday, July 29, 2022
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
FRIDAY, JULY 29, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0434E
SUNSET: 1907E
SLIGHTLY MORE ENJOYABLE WEATHER CONDITIONS AFTER
A BIT OF OVERNIGHT RAINFALL….
We measured 0.04 inches this morning, ending the almost
10-day rainless streak! Skies today were partly cloudy
while visibility was limited at 40 miles on average.
We had a cool breeze from the west, increasing in
significance as the day went on. Speeds were almost
15 mph on average with frequent gusts around 20 mph.
A small brush fire was also seen east of the hill at
the 1 P.M. observation.
The yearly rain deficit has now reached 9.18″ below normal!
Most of the area, including the Greater Boston Area and points
north and northwest out to Worcester are under a severe drought.
With only 0.77″ 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 are really creeping up the
rankings list despite the seemingly pleasant start to the month.
Through yesterday, the 24-hour adjusted mean temperature is
75.0F. This means if the month ended today, we would be in
second place on the rankings list.
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.
Drought section written by Assistant Chief Observer,
the one and only Matthew Douglas!!!!
The high so far today is 90F, which is 8 degrees above the
normal maximum of 82F. The low since midnight is 70F, which
is 6 degrees above the normal minimum of 64F.
————————————————————–
Today’s Observations:
7 A.M.
Weather: Scattered altocumulus, broken cirrocumulus
Temperature: 75F; Dew Point: 67F; Relative Humidity: 76%
Wind: WNW @ 5 kts, wind light
Sea-level pressure: 1011.3 mb; 29.86 in. Hg: rising, then
more slowly
Visibility: 40 miles
6-hr Max temp: 75F
6-hr Min temp: 70F
24-hr Precip: 0.04 ins.
BHO SA 1155 140 SCT 250 BKN 40 113/75/67/3005/986/ WND LGT/
8/059 51018 70004 10075 20070
10 A.M.
Weather: Scattered altocumulus and cirrocumulus, few
small cumulus
Temperature: 83F; Dew Point: 63F; Relative Humidity: 52%
Wind: W @ 11G20 kts
Sea-level pressure: 1011.5 mb; 29.87 in Hg: Rising, then falling
Visibility: 30 miles, hazy
3-hr Precip: 0.00 ins.
BHO SA 1455 140 SCT 250 SCT 30 115/83/63/2711G20/987/ FEW SML
CU ALQDS HAZY/ 8/159 50002
1 P.M.
Weather: Scattered altocumulus, scattered cirrocumulus,
few small cumulus, smoke plume to the east
Temperature: 89F, Dew point: 63F; Relative Humidity: 42%
Wind: W @ 11G19 kts
Sea-level pressure: 1011.8 mb; 29.88 in Hg: rising then more
rapidly
Visibility: 40 miles
6-hr Max temp: 90F
6-hr Min temp: 75F
6-hr Precip: 0.00 ins.
BHO SA 1755 140 SCT 250 SCT 40 118/89/63/2711G19/988/ FEW SML CU
ALQDS K PLUME DSNT E/ 8/159 53003 10090 20075
————————————————————–
SUMMARY FOR THURSDAY, JULY 28, 2022
TEMPERATURE (DEGREES F)
MAX…….87 NORMAL…..82
MIN…….67 NORMAL…..64
MEAN……77 NORMAL…..73
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……..+4
TOTAL DEPARTURE FOR THE MONTH……………….+97 [+3.3 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……..-6
TOTAL HEATING UNITS FOR THE SEASON……………0 DEPARTURE……..-6
TOTAL HEATING UNITS LAST SEASON TO DATE………26 DEPARTURE…….-26
COOLING DEGREE DAYS (SEASON: JAN 2022 THRU DEC 2022)
TOTAL COOLING UNITS FOR YESTERDAY……………12 DEPARTURE……..+4
TOTAL COOLING UNITS FOR THE MONTH…………..311 DEPARTURE…….+88
TOTAL COOLING UNITS FOR THE SEASON………….466 DEPARTURE……+104
TOTAL COOLING UNITS LAST SEASON TO DATE……..372 DEPARTURE…….+94
PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….35 SSW @ 5:32 P.M.
AEROVANE……………….N/A
VECTOR #2 (Instantaneous)..38 @ 5:02 P.M.
DAVIS #2 ………………41 S @ 2:15 P.M.
RMY #2 (Instantaneous)…..39 SSW @ 5:02 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………………28 SSW @ 5:16 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..27 @ 5:17 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………28 S @ 2:16 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..28 SSW @ 5:17 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……..12.4 SSW [297 total miles]
VECTOR #2………………13.0
DAVIS #2……………….12.8 SSW
RMY #2…………………13.1 SSW
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……..0.04 DEPARTURE…..-0.07
TOTAL PRECIPITATION FOR THE MONTH…………..0.77 DEPARTURE…..-2.34
TOTAL PRECIPITATION FOR THE YEAR…………..21.16 DEPARTURE…..-9.18
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 The low since midnight is 70F, the daily normal low is 64F
DAILY RECORDS
07/24/2022: NEW HIGH MAXIMUM TEMPERATURE RECORD OF 99F,
PREVIOUS RECORD WAS 96F SET IN 1987.
07/24/2022: TIED RECORD HIGH MINIMUM OF 73F, ALSO SET IN 1952
07/25/2022: TIED RECORD HIGH MINIMUM OF 74F, ALSO SET IN 2001
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR JULY 29
HIGH 97F IN 1949
LOW 53F IN 1888,1914
PRECIP 1.53 INS IN 1901
PEAK GUST 40e MPH E IN 1941
RECORDS FOR JULY 30
HIGH 99F IN 1949
LOW 51F IN 1956
PRECIP 1.84 INS IN 1976
PEAK GUST 70e MPH SW 1944
TODAY’S REPORT PREPARED BY: Benjamin Turner
