Sunday, June 2, 2024

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

SUNDAY, JUNE 2, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0409E
SUNSET:  1916E

A WARMER DAY WITH LIMITED VISIBILITY AND LIGHT WIND….

We observed partly cloudy conditions with 35 miles of visibility at best
due to pollen and haze. Wind was light and variable with a slight
westerly component for most of the day, but increased to around 15 mph
a half hour before the 1 o’clock observation. With the increase in
wind, we encountered an increase in cloud cover.

We’re getting a lot of rain for the growing season, with a rainfall
surplus of 8 inches and a yearly total of 31 inches!

The maximum temperature so far today is 84F degrees, which is
13 degrees above the normal high of 71F. The minimum temperature
since midnight is 52F degrees, which is a degree below the normal low
of 53F.

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MONTHLY STATS FOR MAY 2024

TEMPERATURE, Deg. F
Avg. Max. 67.7 [+0.9] Avg. Min. 49.8 [+1.6] Mean      58.9 [+1.4] 24-hour corrected mean: 57.6
Max. for month: 88F on the 22nd
Min. for month: 39F on the 11th

HEATING DEGREE DAYS
Total heating units:    222 [-036] Total for the season:  5379 [-766] Total for last season: 5196

COOLING DEGREE DAYS
Total cooling units:    037 [+012] Total for the season:   037 [+009] Total for last season:  031

PRECIPITATION, Inches
Total: 5.86 [+2.04] Greatest in 24 hrs: 1.47 on the 15th-16th

SNOWFALL, Inches
Total: 0.0 [ 0.0] Greatest in 24 hrs: 0.0 on the N/A

WIND, mph
Avg. uncorrected wind speed:  9.6 mph
Avg. corrected wind speed:   10.3 mph
Prevailing wind direction:   East-Northeest [15%] Peak gust and direction:  38 W on the 24th

SUNSHINE:
Campbell-Stokes card minutes: 13350 of a possible 26226, or 51%
Astronomical total minutes: 13860 of a possible 27210, or 51%

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Today’s Observations:

7 A.M.
Weather: Clear, few cirrus S-W-NNW
Temperature: 59F; Dew Point: 52F; Relative Humidity: 76%
Wind: W @ 4 kts, wind light and variable
Sea-level pressure: 1019.0 mb; 30.09 in. Hg: rising then more slowly
Visibility: 35 miles, hazy
6-hr Max temp: 59F
6-hr Min temp: 52F
24-hr Precip:  0.00 inches
BHO SA 1155 CLR 35 190/59/52/2704/009/ FEW CI S-W-NNW HAZY WND L/V/ 8/001 51005 10059 20052

10 A.M.
Weather: Scattered cirrus
Temperature: 74F; Dew Point: 50F; Relative Humidity: 43%
Wind: SSW @ 4 kts, wind light and variable
Sea-level pressure: 1018.8 mb; 30.08 in. Hg: rising, then falling
Visibility: 30 miles, hazy
3-hr Precip:  0.00 inches
BHO SA 1455 250 SCT 30 188/74/50/2004/008/ HAZY WND L/V/ 8/001 55002

1 P.M.
Weather: Scattered cumulus, broken cirrus
Temperature: 82F; Dew Point: 48F; Relative Humidity: 31%
Wind: WSW @ 8G16 kts
Sea-level pressure: 1016.3 mb; 30.01 in. Hg: falling, then more rapidly
Visibility: 20 miles, hazy
6-hr Max temp: 84F
6-hr Min temp: 59F
6-hr Precip:  0.00 inches
BHO SA 1755 50 SCT 250 BKN 20 163/82/48/2408G16/001/ HAZY/ 8/201 58025 10084 20059

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SUMMARY FOR SATURDAY, JUNE 1, 2024

TEMPERATURE (DEGREES F)
MAX…….79   NORMAL…..71
MIN…….53   NORMAL…..53
MEAN……66   NORMAL…..62

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+4
TOTAL DEPARTURE FOR THE MONTH……………………..+4 [+3.8 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY…………….0  DEPARTURE……..-5
TOTAL HEATING UNITS FOR THE MONTH…………….0  DEPARTURE……..-5
TOTAL HEATING UNITS FOR THE SEASON…………5379  DEPARTURE……-770
TOTAL HEATING UNITS LAST SEASON TO DATE…….5196  DEPARTURE……+183

COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….1  DEPARTURE……..-1
TOTAL COOLING UNITS FOR THE MONTH…………….1  DEPARTURE……..-1
TOTAL COOLING UNITS FOR THE SEASON…………..38  DEPARTURE……..+8
TOTAL COOLING UNITS LAST SEASON TO DATE………38  DEPARTURE……..+0

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

F420C (Official)……….E18 WNW  @  03:07 P.M.
VECTOR #1 (1-Sec)……….20 NW   @  01:43 P.M.
VECTOR #2 (1-Sec)……….21 NW   @  02:38 A.M.
DAVIS #1……………….19 W    @  03:07 P.M.
DAVIS #2 ………………19 NW   @  03:09 P.M.
RMY #1 (Instantaneous)…..20 NW   @  03:07 P.M.
RMY #2 (Instantaneous)…..20 NW   @  02:38 A.M.
MERLIN…………………20 NW
RICHARDS (C5C) (Inst)…….M

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………15 NW   @  03:02 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..14      @  03:37 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..15      @  03:12 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………14 NW   @  03:37 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………14 NW   @  03:12 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..14 NW   @  03:37 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..15 NW   @  03:12 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……….M

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….7.8 NNW [187 total miles] VECTOR #1……………..6.8
VECTOR #2……………..6.9
DAVIS #1………………8.0 NW
DAVIS #2………………8.1 NW
RMY #1………………..8.0 NW
RMY #2………………..8.4 NW
RICHARDS (C5C)…………..M

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.16
TOTAL PRECIPITATION FOR THE MONTH…………..0.00 DEPARTURE…..-0.16
TOTAL PRECIPITATION FOR THE YEAR (2024)…….30.82 DEPARTURE…..+8.06

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE…….0.0
TOTAL SNOWFALL FOR THE MONTH………………..0.0 DEPARTURE…….0.0
TOTAL SNOWFALL FOR THE SEASON (2023-2024)……26.8 DEPARTURE…..-42.9

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PRELIMINARY CLIMATE SUMMARY FOR MAY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)

6/1 79/53/66/0.00/0.0/…/..          18 WNW VEC1 20 NW  RMY 20

6/2 The low since midnight is 53F, the daily normal low is 53F.

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JUNE DAILY RECORDS TO DATE

NONE YET.

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

RECORDS FOR JUNE 2
HIGH 91F IN 1895
LOW 41F IN 1907, 1929
PRECIP 2.36 INS IN 1982
SNOWFALL TRACE IN 1907 (ICE PELLETS)
PEAK GUST 63 MPH NW IN 2000

RECORDS FOR JUNE 3
HIGH 98F IN 1919
LOW 38F IN 1929
PRECIP 2.40 INS 2006
PEAK GUST 47 MPH NW IN 1998

TODAY’S REPORT PREPARED BY: Benjamin Turner