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Sunday, June 30, 2024

June 30, 2024

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SUNDAY, JUNE 30, 2024 ALL TIMES ARE…

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

SUNDAY, JUNE 30, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0411E
SUNSET:  1925E

HOT AND HUMID WITH MOSTLY CLOUDY SKIES AND LIMITED
VISIBILITY….

We observed hot, humid, and hazy conditions as some rainfall
approaches from the west. Temperatures climbed into the mid
80’s today while the dew point held in the mid 70’s. Weather
conditions were mostly cloudy, with building cumulus being
observed to the west at the 1 PM observation.

Visibility was limited due to fog or haze, being 20 miles on
average. Wind is southerly with an average speed of 15 mph and
a max gust of almost 25 mph.

The maximum temperature so far today is 86F, which is 6 degrees
above the normal high of 80F. The minimum temperature since
midnight is 72F, which is 10 degrees above the normal low of 62F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Overcast stratus
Temperature: 74F; Dew Point: 72F; Relative Humidity: 93%
Wind: SSW @ 10G16 kts
Sea-level pressure: 1013.8 mb; 29.94 in. Hg: rising then falling
Visibility: 20 miles, thin fog
6-hr Max temp: 74F
6-hr Min temp: 72F
24-hr Precip:  Trace
BHO SA 1155 20 OVC 20 138/74/72/2010G16/994/ THN F ALQDS/ 8/6//
58002 70000 10074 20072

10 A.M.
Weather: Scattered altostratus, broken cirrostratus, few
cumulus
Temperature: 82F; Dew Point: 74F; Relative Humidity: 76%
Wind: SW @ 8G14 kts
Sea-level pressure: 1012.9 mb; 29.91 in. Hg: rising, then falling
Visibility: 40 miles, hazy
3-hr Precip:  0.00 inches
BHO SA 1455 120 SCT 250 BKN 40 129/82/74/2208G14/991/ FEW CU ALQDS
HAZY/ 8/156 55009

1 P.M.
Weather: Scattered cumulus, broken altocumulus, overcast cirrostratus,
few breaks in overcast overhead
Temperature: 86F; Dew Point: 74F; Relative Humidity: 68%
Wind: S @ 8G19 kts
Sea-level pressure: 1010.5 mb; 29.84 in. Hg: falling, then more rapidly
Visibility: 20 miles, hazy
6-hr Max temp: 86F
6-hr Min temp: 74F
6-hr Precip:  0.00 inches
BHO SA 1755 20 SCT 120 BKN 220 OVC 20 105/86/74/1808G19/984/ HAZY FEW
BINOVC OVHD/ 8/236 56024 10086 20074

————————————————————–

SUMMARY FOR SATURDAY, JUNE 29, 2024

TEMPERATURE (DEGREES F)
MAX…….72  NORMAL…..80
MIN…….58  NORMAL…..62
MEAN……65  NORMAL…..71

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..-6
TOTAL DEPARTURE FOR THE MONTH…………………….+78 [+2.5 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY…………….0  DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH……………13  DEPARTURE…….-52
TOTAL HEATING UNITS FOR THE SEASON…………5392  DEPARTURE……-818
TOTAL HEATING UNITS LAST SEASON TO DATE…….5295  DEPARTURE…….+97

COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….0  DEPARTURE……..-6
TOTAL COOLING UNITS FOR THE MONTH…………..129  DEPARTURE…….+24
TOTAL COOLING UNITS FOR THE SEASON………….166  DEPARTURE…….+33
TOTAL COOLING UNITS LAST SEASON TO DATE……..120  DEPARTURE…….+46

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)……….E38 SSW  @   08:16 P.M.
VECTOR #1 (1-Sec)……….41 SSW  @   08:16 P.M.
VECTOR #2 (1-Sec)……….41 SSW  @   08:16 P.M.
DAVIS #1……………….43 S    @   06:26 P.M.
DAVIS #2 ………………47 S    @   06:21 P.M.
RMY #1 (Instantaneous)…..44 SSW  @   08:16 P.M.
RMY #2 (Instantaneous)…..44 SSW  @   08:16 P.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)…..OTS

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………32 SSW  @   08:06 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..30      @   08:05 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..31      @   08:05 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………29 SSW  @   08:05 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………32 S    @   06:23 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..29 SSW  @   08:05 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..31 SSW  @   08:05 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……16.3 SSW [392 total miles] VECTOR #1…………….17.1
VECTOR #2…………….18.3
DAVIS #1……………..15.7 SSW
DAVIS #2……………..17.9 SSW
RMY #1……………….16.7 SSW
RMY #2……………….18.5 SSW
RICHARDS (C5C)…………OTS

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….TRACE DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH…………..4.72 DEPARTURE…..+0.22
TOTAL PRECIPITATION FOR THE YEAR (2024)…….35.54 DEPARTURE…..+8.44

————————————————————–

PRELIMINARY CLIMATE SUMMARY FOR JUNE 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

6/1   79/53/66/+4/0.00/878/97             18 WNW VEC1 20 NW  RMY 20
6/2   83/52/68/+6/0.00/780/86             21 W   VEC1 21 W   RMY 21
6/3   78/57/68/+6/0.00/626/69             22 NE  VEC1 22 NE  RMY 21
6/4   75/55/65/+2/0.00/817/90             20 SSW VEC1 19 SSW RMY 19
6/5   84/56/70/+7/T/564/62                29 SW  VEC1 28 SW  RMY 29
6/6   74/60/67/+4/0.01/064/07             20 SSE VEC1 20 SSE RMY 20
6/7   80/60/70/+6/0.14/410/45             26 WNW VEC1 27 WNW RMY 27
6/8   73/54/64/0/T/767/84                 48 W   VEC1 49 W   RMY 47
6/9   67/55/61/-3/0.25/292/32             29 WNW VEC1 28 WNW RMY 26
6/10  75/54/65/0/T/868/95                 28 W   VEC1 27 W   RMY 27
6/11  71/53/62/-3/0.00/320/35             16 WNW VEC1 15 WNW RMY 15
6/12  76/59/68/+3/0.00/531/58             16 S   VEC1 16 SSE RMY 17
6/13  82/57/70/+4/0.00/869/95             28 SW  VEC1 27 SW  RMY 28
6/14  84/63/74/+9/0.75/476/52             50 NW  VEC1 50 NW  RMY 53 TSTM
6/15  75/54/66/0/0.23/824/90              23 NNW VEC1 27 NW  RMY 26
6/16  72/51/62/-5/0.00/815/89             22 SSE VEC1 23 S   RMY 23
6/17  80/56/68/+1/0.00/596/65             30 SSW VEC1 31 SSW RMY 31
6/18  92/64/78/+11/0.00/853/93            24 SW  VEC1 23 SSW RMY 23
6/19  93/66/80/+12/0.00/642/70            24 SW  VEC1 24 SW  RMY 25
6/20  94/68/81/+13/0.10/706/77            36 NNW VEC1 37 NNW RMY 36 TSTM
6/21  83/61/72/+4/0.90/669/73             28 ENE VEC1 28 ENE RMY 28 TSTM
6/22  69/59/64/-5/0.27/000/00             19 NE  VEC1 21 NE  RMY 21
6/23  84/59/72/+3/0.15/238/26             38 SSW VEC1 38 SSW RMY 38
6/24  80/61/71/+2/0.09/770/84             36 N   VEC1 36 N   RMY 40
6/25  86/61/74/+4/T/806/88                26 NNW VEC1 26 NNW RMY 27
6/26  87/65/76/+6/1.63/577/63             37 WSW VEC1 37 WSW RMY 41 TSTM
6/27  80/60/70/0/0.20/631/69              32 WNW VEC1 31 WNW RMY 33
6/28  75/52/64/-6/0.00/888/97             29 NNW VEC1 29 NNW RMY 31
6/29  72/58/65/-6/…./…/..             38 SSW VEC1 41 SSW RMY 44

6/30  The low since midnight is 71F, the daily normal low is 62F.

————————————————————–

JUNE DAILY RECORDS TO DATE

6/19 RECORD MAXIMUM TEMPERATURE OF 93F,
BEATING THE PREVIOUS RECORD OF 92F SET IN 1923

6/20 RECORD MAXIMUM TEMPERATURE OF 94F,
TIED WITH PREVIOUS RECORD SET IN 1953

6/20 RECORD HIGH MINIMUM TEMPERATURE OF 68F,
TIED WITH PREVIOUS RECORD SET IN 1923 AND 1931

6/26 RECORD PRECIPITATION OF 1.63″,
BEATING THE PREVIOUS RECORD OF 1.22″ SET IN 1938

————————————————————–

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

RECORDS FOR JUNE 30
HIGH 94F IN 1964
LOW 47F IN 1919
PRECIP 3.04 INS IN 1921
PEAK GUST 51 MPH WNW IN 1957

RECORDS FOR JULY 1
HIGH 98F IN 1964
LOW 44F IN 1988 [RECORD FOR MONTH] PRECIP 4.46 INS IN 1915 [RECORD FOR MONTH] PEAK GUST 52 MPH WNW IN 1974

TODAY’S REPORT PREPARED BY: Benjamin Turner

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