Thursday, August 29, 2024

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

THURSDAY, AUGUST 29, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0507E
SUNSET:  1822E

SPLENDID WEATHER RETURNS WITH MAINLY SUNNY, COOLER, AND LESS HUMID
CONDITIONS TODAY….

What a nice day today with pleasant temperatures and humidity
levels under mainly sunny skies. A cold front pushed through
last evening with a wind shift to the northeast and a lower
dew point air mass being ushered into the region behind it.
There was no rain associated with the front, so our dry stretch
of weather continues.

Temperatures have reached the low 70s early this afternoon with
the dew point in the mid 50s. This is much nicer than the dew
points in the lower 70s yesterday.

The wind was fairly active overnight into this morning, but the
trend has been for diminishing speeds as we move through the early
afternoon hours. The average speed for the day so far is around
10mph, mainly out of the northeast and east-northeast. The peak
gust so far is 23mph, which occurred just before 9am this morning.

Visibility is much better today than it has been the previous few
days. The view today has been holding around 60 miles.

The maximum temperature so far today is 71F, which is 7 degrees
below the normal high of 78F. The minimum temperature since
midnight is 60F, which is 1 degree below the normal low of 61F.

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Today’s Observations:

7 A.M.
Weather: Scattered altocumulus, broken cirrocumulus, broken cirrus,
few stratocumulus all quadrants, few cumulus distant NNE
Temperature: 64F; Dew Point: 55F; Relative Humidity: 73%
Wind: NE @ 9G18 kts
Sea-level pressure: 1024.6 mb ; 30.26 in. Hg: rising, then more slowly
Visibility: 60 miles
6-hr Max temp: 64F
6-hr Min temp: 60F
24-hr Precip:  0.00 inches
BHO SA 1155 100 SCT 200 BKN 250 BKN 60 246/64/55/0509G18/026/
FEW SC ALQDS FEW CU DSNT NNE/ 8/859 51019 10064 20060

10 A.M.
Weather: Scattered stratocumulus, thin scattered cirrus
Temperature: 68F; Dew Point: 55F; Relative Humidity: 62%
Wind: ENE @ 10G17 kts
Sea-level pressure: 1026.0 mb; 30.30 in. Hg: rising, then more slowly
Visibility: 60 miles
3-hr Precip: 0.00 inches
BHO SA 1455 24 SCT 250 -SCT 60 260/68/55/0710G17/030/ 8/501 51014

1 P.M.
Weather: Clear, few stratocumulus distant E-S-W-NNE, few altocumulus
distant NNW-NNE, few cirrus all quadrants
Temperature: 70F; Dew Point: 54F; Relative Humidity: 58%
Wind: ENE @ 6 kts, wind light
Sea-level pressure: 1026.1 mb; 30.30 in. Hg: rising, then steady
Visibility: 60 miles
6-hr Max temp: 71F
6-hr Min temp: 64F
6-hr Precip: 0.00 inches
BHO SA 1755 CLR 60 261/70/54/0706/030/ FEW SC DSNT E-S-W-NNE
FEW AC DSNT NNW-NNE FEW CI ALQDS WND LGT/ 8/551 51001 10071 20064

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SUMMARY FOR WEDNESDAY, AUGUST 28, 2024

TEMPERATURE (DEGREES F)
MAX…….88  NORMAL…..79
MIN…….64  NORMAL…..61
MEAN……76  NORMAL…..70

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+6
TOTAL DEPARTURE FOR THE MONTH……………………..-6 [-0.4 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….0  DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH……………10  DEPARTURE……..+1
TOTAL HEATING UNITS FOR THE SEASON…………..10  DEPARTURE……..-6
TOTAL HEATING UNITS LAST SEASON TO DATE……….1  DEPARTURE……..-9

COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY……………11  DEPARTURE……..+6
TOTAL COOLING UNITS FOR THE MONTH…………..192  DEPARTURE……..-2
TOTAL COOLING UNITS FOR THE SEASON………….689  DEPARTURE……+108
TOTAL COOLING UNITS LAST SEASON TO DATE……..560  DEPARTURE……+129

PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all on Main Tower.
E=Estimated

F420C (Official)……….E30 WNW  @   11:57 A.M.
VECTOR #1 (1-Sec)……….30 WNW  @   11:57 A.M.
VECTOR #2 (1-Sec)……….29 WNW  @   11:34 A.M.
DAVIS #1……………….28 W    @   08:50 A.M.
DAVIS #2 ………………27 W    @   10:51 A.M.
RMY #1 (Instantaneous)…..30 WNW  @   11:57 A.M.
RMY #2 (Instantaneous)…..29 WNW  @   11:32 A.M.
MERLIN…………………28 NW
RICHARDS (C5C) (Inst)…..OTS

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………22 WNW  @   11:49 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..19      @   12:08 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..21      @   11:34 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………21 W    @   12:08 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………21 WNW  @   11:34 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..19 W    @   12:08 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..20 W    @   11:34 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……12.4 SW [297 total miles] VECTOR #1…………….12.4
VECTOR #2…………….12.8
DAVIS #1……………..12.4 W
DAVIS #2……………..12.7 W
RMY #1……………….12.1 W
RMY #2……………….12.7 W
RICHARDS (C5C)…………OTS

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.12
TOTAL PRECIPITATION FOR THE MONTH…………..2.96 DEPARTURE…..-0.60
TOTAL PRECIPITATION FOR THE YEAR (2024)…….41.21 DEPARTURE…..+6.95

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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   92/71/82/+9/T/779/90                24 W   VEC1 24 W   RMY 23
8/2   94/73/84/+11/0.01/579/67            31 SSW VEC1 31 SSW RMY 30 TSTM
8/3   92/75/84/+11/0.00/612/71            29 W   VEC1 28 W   RMY 28
8/4   85/68/77/+4/0.20/318/37             29 WSW VEC1 29 WSW RMY 31 TSTM
8/5   90/67/79/+6/T/686/80                28 SSW VEC1 28 SSW RMY 29
8/6   73/60/67/-6/0.56/009/01             26 ENE VEC1 26 ENE RMY 26
8/7   69/57/63/-10/0.18/119/14            25 NE  VEC1 23 NE  RMY 23
8/8   72/58/65/-7/0.09/187/22             20 ESE VEC1 20 ESE RMY 19
8/9   82/62/72/0/0.48/127/15              50 SSW VEC1 48 S   RMY 50
8/10  85/68/77/+5/0.37/659/78             41 SSW VEC1 41 SSW RMY 43
8/11  81/63/72/0/0.00/741/88              30 W   VEC1 29 SW  RMY 30
8/12  77/59/68/-4/0.15/638/76             35 WNW VEC1 34 WNW RMY 36
8/13  80/58/69/-3/0.00/787/94             21 NW  VEC1 22 NW  RMY 21
8/14  82/62/72/0/0.00/676/81              16 NNW VEC1 15 NNW RMY 15
8/15  84/62/73/+1/0.57/491/59             44 N   VEC1 42 N   RMY 46 TSTM
8/16  74/61/68/-4/0.00/415/50             13 ESE VEC1 13 ESE RMY 13
8/17  75/60/68/-4/0.00/323/39             17 SE  VEC1 16 SE  RMY 15
8/18  71/62/67/-4/0.09/008/01             18 SE  VEC1 19 SE  RMY 17
8/19  78/66/72/+1/0.19/164/20             23 SSW VEC1 23 SSW RMY 22 TSTM
8/20  69/54/62/-9/0.07/238/29             32 NW  VEC1 32 NW  RMY 33
8/21  73/51/62/-9/0.00/752/92             20 WNW VEC1 19 WNW RMY 20
8/22  73/52/63/-8/0.00/766/94             20 W   VEC1 20 WNW RMY 20
8/23  81/58/70/-1/0.00/788/97             22 WNW VEC1 21 WNW RMY 22
8/24  84/61/73/+2/0.00/735/91             20 WNW VEC1 19 WNW RMY 18
8/25  84/62/73/+3/0.00/540/67             17 W   VEC1 17 W   RMY 17
8/26  80/64/72/+2/T/546/68                18 NE  VEC1 18 NE  RMY 17
8/27  83/61/72/+2/0.00/705/88             20 SW  VEC1 20 WSW RMY 20
8/28  88/64/76/+6/0.00/575/72             30 WNW VEC1 30 WNW RMY 30

8/29  The low since midnight is 60F, the daily normal low is 61F.

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AUGUST DAILY RECORDS TO DATE

8/3  RECORD HIGH MINIMUM TEMPERATURE OF 75F,
TIED THE PREVIOUS RECORD SET IN 2020

8/15 PEAK GUST 44 MPH N,
TIED THE PREVIOUS RECORD SET IN 1941

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

RECORDS FOR AUGUST 29
HIGH 95F IN 1953
LOW 41F IN 1982
PRECIP 2.88 INCHES IN 1962
PEAK GUST 70e MPH S IN 1949

RECORDS FOR AUGUST 30
HIGH 94F IN 1953
LOW 39F IN 1965
PRECIP 2.75 INCHES IN 1936
PEAK GUST 43 MPH NW IN 1965

TODAY’S REPORT PREPARED BY: Matt Douglas