Saturday, June 24, 2023

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

SATURDAY, JUNE 24, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0408E
SUNSET:  1925E

RAINY MORNING CLEARING IN THE AFTERNOON…

Today started with fog and higher than normal low temperatures
throughout the early morning. At 7 EST, it was raining and there
was limited visibility because of fog.

As the day progressed, rain picked up intensity dropping about
0.09″ before the 1 o’clock observation. Shortly after one, clouds
moved out of the area, and rain stopped.

Our high temperature so far as of 1 PM EST was 73F, and our low since
midnight was 66F, which is 6 degrees higher than our normal low of
60F.

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Today’s Observations:

7 A.M.
Weather: Light rain
Temperature: 68F; Dew Point: 68F; Relative Humidity: 100%
Wind: S @ 9 kts
Sea-level pressure: 1013.8 mb; 29.94 in. Hg: rising then falling
Visibility: 1/8 mile, fog
6-hr Max temp: 80F
6-hr Min temp: 66F
24-hr Precip:  0.03 inches
BHO SA 1155 X W3 1/8R- 138/68/68/1809/994/ 8//// 50007 70003 10080 20066

10 A.M.
Weather: Light rain
Temperature: 69F; Dew Point: 69F; Relative Humidity: 100%
Wind: SSW @ 9 kts
Sea-level pressure: 1013.0 mb; 29.91 in. Hg: falling, then more quickly
Visibility: 1/8 mile, fog
3-hr Precip: 0.03 inches
BHO SA 1455 X W3 1/8 130/69/69/2009/991/ 8//// 58008 6003/

1 P.M.
Weather: Overcast stratus
Temperature: 73F; Dew Point: 65F; Relative Humidity: 76%
Wind: S @ 2 kts
Sea-level pressure: 1018.5 mb; 30.08 in. Hg: falling, then more rapidly
Visibility: 60 miles
6-hr Max temp: 73F
6-hr Min temp: 68F
6-hr Precip:  0.09 inches
BHO SA 1755 E60 OVC 40 110/73/73/2011/985/ 8/6// 57020 6009/ 10073 20068

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SUMMARY FOR FRIDAY, JUNE 23, 2023

TEMPERATURE (DEGREES F)
MAX…….80   NORMAL…..78
MIN…….58   NORMAL…..60
MEAN……69   NORMAL…..69

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….0
TOTAL DEPARTURE FOR THE MONTH………………..-66 [-3.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY…………….0  DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH……………99  DEPARTURE…….+37
TOTAL HEATING UNITS FOR THE SEASON…………5295  DEPARTURE……-911
TOTAL HEATING UNITS LAST SEASON TO DATE…….5607  DEPARTURE……-312

COOLING DEGREE DAYS (SEASON: JAN 2023 THRU DEC 2023)
TOTAL COOLING UNITS FOR YESTERDAY…………….4  DEPARTURE……..-1
TOTAL COOLING UNITS FOR THE MONTH……………41  DEPARTURE…….-30
TOTAL COOLING UNITS FOR THE SEASON…………..72  DEPARTURE…….-27
TOTAL COOLING UNITS LAST SEASON TO DATE……..109  DEPARTURE…….-37

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 SSW   @  10:51 P.M.
VECTOR #1 (1-Sec)……….20 SSW   @  10:51 P.M.
VECTOR #2 (1-Sec)……….19 SSW   @  08:49 P.M.
DAVIS #1……………….20 S     @  06:57 P.M.
DAVIS #2 ………………20 S     @  08:52 P.M.
RMY #1 (Instantaneous)…..19 SSW   @  11:38 P.M.
RMY #2 (Instantaneous)…..19 SSW   @  08:49 P.M.
MERLIN…………………17 S
RICHARDS (C5C) (Inst)……18       @  11:32 P.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………14 SSW @  11:33 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..14     @  11:33 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..15     @  10:55 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………13 S   @  11:33 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………14 SSW @  10:55 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..15 SSW @  11:33 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..15 SSW @  10:55 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………14     @  11:33 P.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………. 5.8 SSW [139 total miles] VECTOR #1……………….. 6.3
VECTOR #2……………….. 6.6
DAVIS #1………………… 5.6 S
DAVIS #2………………… 6.1 S
RMY #1………………….. 6.1 S
RMY #2………………….. 6.5 S
RICHARDS (C5C)…………… 6.6

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.03 DEPARTURE…..-0.11
TOTAL PRECIPITATION FOR THE MONTH…………..3.67 DEPARTURE…..+0.14
TOTAL PRECIPITATION FOR THE YEAR…………..24.42 DEPARTURE…..-1.71

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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   88/56/72/+10/0.00/859/95            21 WSW  VEC1 21 WSW RMY 21
6/2   91/53/72/+10/0.53/634/70            37 ENE  VEC1 39 ENE RMY 37 TSTM
6/3   53/43/48/-14/0.16/000/00            36 NE   VEC1 38 NE  RMY 36
6/4   52/43/48/-15/0.17/009/01            30 N    VEC1 32 N   RMY 29
6/5   58/47/53/-10/0.08/027/03            22 N    VEC1 24 N   RMY 23
6/6   72/50/61/-2/T/582/64                31 NNW  VEC1 31 NNW RMY 26 TSTM
6/7   65/50/58/-6/0.00/301/33             28 NW   VEC1 29 NW  RMY 29
6/8   64/51/58/-6/T/191/21                13 WNW  VEC1 13 WNW RMY 10
6/9   64/49/57/-7/0.47/210/23             20 WNW  VEC1 21 ESE RMY 20 TSTM
6/10  67/51/59/-6/0.05/365/40             26 WNW  VEC1 26 WNW RMY 26 TSTM
6/11  80/55/68/+3/0.00/823/90             23 S    VEC1 24 S   RMY 24
6/12  79/60/70/+5/0.15/439/48             32 SSE  VEC1 33 SSE RMY 31
6/13  78/59/69/+3/0.03/421/46             26 SE   VEC1 27 SE  RMY 24
6/14  78/57/68/+2/0.06/448/49             38 S    VEC1 39 S   RMY 39 TSTM
6/15  77/56/67/+1/0.00/559/61             23 WNW  VEC1 22 WNW RMY 22
6/16  81/61/71/+4/T/513/56                20 W    VEC1 19 SSW RMY 19
6/17  64/55/60/-7/1.86/000/00             21 NE   VEC1 21 NE  RMY 21
6/18  70/56/63/-4/0.05/321/35             20 WNW  VEC1 20 WNW RMY 20
6/19  67/54/61/-7/0.00/284/31             20 SE   VEC1 20 SE  RMY 18
6/20  71/53/62/-6/T/367/40                20 ESE  VEC1 20 ESE RMY 20
6/21  69/53/61/-7/0.00/…/..             20 E    VEC1 20 NE  RMY 20
6/22  70/58/62/-7/0.03/…/..             22 ENE  VEC1 23 NE  RMY 22
6/23  80/58/69/+0/0.03/…/..             18 SSW  VEC1 19 SSW RMY 19

6/24  The low since midnight is 66F, the daily normal low is 60F

DAILY RECORDS

06/02/2023: TIED RECORD HIGH MAXIMUM TEMPERATURE OF 91F,
ALSO SET IN 1895

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

RECORDS FOR JUNE 24
HIGH 91F IN 1914, 1976, 2013
LOW 40F IN 1932
PRECIP 2.80 INS IN 1929
PEAK GUST 54 MPH WNW IN 2010

RECORDS FOR JUNE 25
HIGH 93F IN 1943, 1980, 2005
LOW 47F IN 1903
PRECIP 1.38 INS IN 2012
PEAK GUST 51 MPH W IN 1960

TODAY’S REPORT PREPARED BY: Samantha Richard