Thursday, June 27, 2019

| June 27, 2019 | Reply

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

DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, JUNE 27, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

IMPROVING WEATHER THROUGHOUT THE DAY
WITH SOME COASTAL FOG ROLLING IN AFTER
NOONTIME….

A visibility of a 1/16 mile this morning increased to 40
miles as fog dissipated. Wind has been light since this
morning, being calm at the 10 A.M. observation. An
offshore fog has limited visibility to the north and east
to 10 miles this afternoon. The high so far today is 81F,
3 degrees above the daily normal of 78F. The low since
midnight is 57F, 3 degrees below the daily normal minimum
of 60F.

Today’s Observations:

7 A.M.
Weather: Fog
Temperature: 62F; Dew Point: 62F; Wind: W at 7 kts
Sea-level pressure: 30.13 ins. Hg, falling then rising
Visibility: 1/16 mile, fog
6-hr Max temp: 62F
6-hr Min temp: 57F
24-hr Precip: 0.00 ins.
BHO SA 1155 W3 X 1/16F 204/62/62/2707/013/ 8////
51009 10062 20057

10 A.M.
Weather: Broken cirrus, few cumulus
Temperature: 75F; Dew Point: 65F; Wind: Calm
Sea-level pressure: 30.15 ins. Hg, rising steadily
Visibility: 45 miles, distant haze
3-hr Precip: 0.00 ins.
BHO SA 1455 E250 BKN 45 209/75/65/0000/015/ FEW CU
DSNT HZ ALQDS WND CALM/ 8/102 51005

1 P.M.
Weather: Scattered cumulus, broken cirrus
Temperature: 79F; Dew Point: 64F; Wind: ENE at 9 kts
Sea-level pressure: 30.12 ins. Hg, falling steadily
Visibility: 40 miles, except 10 miles offshore due
to a distant fog
6-hr Max temp: 81F
6-hr Min temp: 62F
6-hr Precip: 0.00 ins.
BHO SA 1755 40 SCT E250 BKN 40 200/79/64/0609/012/ DSNT
FG OFFSHR VSBY 10 NNW-ENE/ 8/202 58009 10081 20062

SUMMARY FOR WEDNESDAY, JUNE 26, 2019

TEMPERATURE (DEGREES F)
MAX…..77   NORMAL…..78
MIN…..64   NORMAL…..60
MEAN….71   NORMAL…..69

DEPARTURE FROM 30-YEAR NORMAL………………….+2
TOTAL DEPARTURE FOR THE MONTH………………….+5 [+0.0 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…….-121
TOTAL HEATING UNITS LAST SEASON TO DATE……5916   DIFFERENCE……+336

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………6   DEPARTURE………+1
TOTAL COOLING UNITS FOR THE MONTH…………..56   DEPARTURE……..-26
TOTAL COOLING UNITS FOR THE SEASON………….64   DEPARTURE……..-42
TOTAL COOLING UNITS LAST SEASON TO DATE…….126   DEPARTURE……..-62

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..12 ENE AT  4:26 P.M.
AERO…………………….18 SE  AT  8:42 P.M.
ASOS…………………….16 E   AT  4:29 P.M.
DAVIS……………………16 E   AT  4:28 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY………………….11 ENE AT  4:34 P.M
MAXIMUM 2-MINUTE ASOS AVERAGE……………….13 ENE AT  4:40 P.M
MAXIMUM 2-MINUTE DAVIS AVERAGE………………13 E   AT  4:28 P.M
AVERAGE WIND SPEED AND DIRECTION…………..5.7 NE
ASOS…………………..6.5
DAVIS………………….6.6 E [91 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……-0.20
ASOS…………..3.46
TOTAL PRECIPITATION FOR THE YEAR……….29.27  DEPARTURE……+2.93
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 77/64/71/+2/0.00/…/..               12 ENE AERO 18 SE  RMY N/A

06/27 Low temp since midnight is 57F; 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 27
HIGH 93F IN 1999, 2007
LOW 46F IN 1897
PRECIP 1.72 INS IN 1938
PEAK GUST 55e N IN 1945

RECORDS FOR JUNE 28
HIGH 95F IN 1991
LOW 47F IN 1970
PRECIP 2.09 INS IN 1938
PEAK GUST 52 MPH WSW IN 1993

TODAY’S REPORT PREPARED BY: Benjamin Turner

Category: Daily Discussions

Leave a Reply