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Wednesday, June 26, 2019

June 26, 2019

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY WEDNESDAY, JUNE…

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

DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, JUNE 26, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

FAIR WEATHER FOLLOWS A FOGGY AND OVERCAST
MORNING….

A visibility of a 1/2 mile this morning increased to 40
miles as fog dissipated. Rainfall overnight left 0.18
inches in the gauge at the 7 A.M. observation. Wind
has been light and variable since this morning, but
mainly from the northeast. Cloud cover has decreased
throughout the day, leaving skies partly cloudy by
noontime. The high so far today is 76F, 2 degrees
below the daily normal of 78F. The low since midnight
is 64F, 4 degrees above the daily normal minimum of 60F.

Today’s Observations:

7 A.M.
Weather: Fog
Temperature: 66F; Dew Point: 66F; Wind: NNE at 3 kts,
Wind: Light and variable
Sea-level pressure: 30.01 ins. Hg, falling then rising
Visibility: 1/2 mile, fog
6-hr Max temp: 66F
6-hr Min temp: 65F
24-hr Precip: 0.18 ins.
BHO SA 1155 W3 X 1/2F 164/66/66/0303/001/ WND L/V/ 8////
70018 51016 10066 20065

10 A.M.
Weather: Overcast stratocumulus
Temperature: 72F; Dew Point: 67F; Wind: ENE at 4 kts,
Wind: Light and variable
Sea-level pressure: 30.06 ins. Hg, rising steadily
Visibility: 30 miles, distant fog
3-hr Precip: 0.00 ins.
BHO SA 1455 E20 OVC 30 181/72/67/0704/006/ DSNT FG ALQDS
WND L/V/ 8/8// 51017

1 P.M.
Weather: Scattered cumulus
Temperature: 76F; Dew Point: 68F; Wind: NE at 5 kts,
Wind: Light
Sea-level pressure: 30.05 ins. Hg, falling steadily
Visibility: 40 miles, distant haze
6-hr Max temp: 76F
6-hr Min temp: 66F
6-hr Precip: 0.00 ins.
BHO SA 1755 20 SCT 40 177/76/68/0405/005/ DSNT HZ ALQDS
WND LGT/ 8/200 58004 10076 20066

SUMMARY FOR TUESDAY, JUNE 25, 2019

TEMPERATURE (DEGREES F)
MAX…..73   NORMAL…..78
MIN…..61   NORMAL…..60
MEAN….67   NORMAL…..69

DEPARTURE FROM 30-YEAR NORMAL………………….-2
TOTAL DEPARTURE FOR THE MONTH………………….+3 [-0.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………0   DEPARTURE………-1
TOTAL HEATING UNITS FOR THE MONTH…………..33   DEPARTURE……..-37
TOTAL HEATING UNITS FOR THE SEASON………..6252   DEPARTURE…….-120
TOTAL HEATING UNITS LAST SEASON TO DATE……5916   DIFFERENCE……+336

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………2   DEPARTURE………-3
TOTAL COOLING UNITS FOR THE MONTH…………..50   DEPARTURE……..-27
TOTAL COOLING UNITS FOR THE SEASON………….58   DEPARTURE……..-43
TOTAL COOLING UNITS LAST SEASON TO DATE…….125   DEPARTURE……..-67

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..35 S   AT  3:50 P.M.
AERO…………………….37 S   AT  3:50 P.M.
ASOS…………………….37 S   AT  3:51 P.M.
DAVIS……………………36 S   AT  3:50 P.M. RMY 37
FASTEST MILE FOR YESTERDAY………………….27 S   AT  3:52 P.M
MAXIMUM 2-MINUTE ASOS AVERAGE……………….26 S   AT  3:51 P.M
MAXIMUM 2-MINUTE DAVIS AVERAGE………………27 SSE AT  3:50 P.M
AVERAGE WIND SPEED AND DIRECTION………….10.8 S
ASOS………………….11.2
DAVIS…………………10.7 SSE [164 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE……-0.12
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….3.48  DEPARTURE……-0.14
ASOS…………..3.46
TOTAL PRECIPITATION FOR THE YEAR……….29.27  DEPARTURE……+2.99
ASOS………….29.19

PRELIMINARY CLIMATE SUMMARY FOR JUNE 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

06/01 71/54/63/+1/0.00/551/61               21 E   AERO 20 E   RMY 18
06/02 75/51/63/+1/…./417/46               23 S   AERO 21 S   RMY N/A
06/03 69/50/60/-2/…./753/83               41 W   AERO 39 W   RMY 43
06/04 70/45/58/-5/0.00/717/79               29 W   AERO 23 W   RMY N/A
06/05 81/57/69/+6/…./527/58               33 SSW AERO 33 SSW RMY N/A
06/06 75/64/70/+6/…./428/47               28 SSW AERO 28 SSW RMY N/A
06/07 80/59/70/+6/0.00/692/76               23 S   AERO 23 S   RMY 22
06/08 78/57/68/+4/0.00/885/97               23 ENE AERO 21 SW  RMY 21
06/09 78/55/67/+3/0.00/840/92               22 S   AERO 21 S   RMY 21
06/10 79/54/67/+2/…./712/78               26 SSE AERO 25 SSE RMY 33
06/11 73/58/66/+1/…./247/27               32 NW  AERO 30 NW  RMY 35
06/12 75/52/64/-1/…./869/95               25 SSW AERO 25 S   RMY 28
06/13 55/49/52/-13/…./…/..              36 NE  AERO 35 NE  RMY 35
06/14 72/50/61/-5/0.00/…/..               38 W   AERO 39 W   RMY 38
06/15 79/54/67/+1/0.00/…/..               38 SSW AERO 41 SSW RMY 40
06/16 70/62/66/0/…./…/..                32 SW  AERO 35 SW  RMY N/A
06/17 74/62/68/+1/…./…/..               12 SSE AERO 18 NW  RMY 17
06/18 71/62/67/0/…./…/..                17*S   AERO 17 S   RMY 16
06/19 74/61/68/+1/…./…/..               16 SSE AERO 20 SSE RMY 19
06/20 69/61/65/-3/…./…/..               26 S   AERO 26 S   RMY 29
06/21 68/58/63/-5/…./…/..               32 NW  AERO 28 NW  RMY 33
06/22 77/56/67/-1/…./…/..               33 NW  AERO 32 NW  RMY 35
06/23 82/59/71/+3/…./…/..               30 NW  AERO 25 WNW RMY 29
06/24 84/61/73/+4/…./…/..               22 NW  AERO 21 NW  RMY 22
06/25 73/61/67/-2/0.18/…/..               35 S   AERO 37 S   RMY 37

06/26 Low temp since midnight is 64F; normal low is 60F

*Estimated

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

RECORDS FOR JUNE 26
HIGH 96F IN 1952
LOW 45F IN 1986
PRECIP 1.52 INS IN 1945
PEAK GUST 48 MPH N IN 1998

RECORDS FOR JUNE 27
HIGH 93F IN 1999, 2007
LOW 46F IN 1897
PRECIP 1.72 INS IN 1938
PEAK GUST 55e N IN 1945

TODAY’S REPORT PREPARED BY: Benjamin Turner

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