Thursday, June 29, 2017

| June 29, 2017 | Reply

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

DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, JUNE 29, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME

TEMPS AND DEW POINTS ON THE RISE

Temperatures and dew points are increasing today due to
a passing warm front bringing humid air from the south.
Dew points had risen to 57F by the 1:00PM EST ob and are
expected to reach the 60s later tonight once the front
has passed.

Humid conditions and southerly winds have also brought
an increased amount of haze to the region which limited
visibility to 40 miles during the last two observations.
Altostratus clouds moved in by late morning making for
overcast skies through the early afternoon.

 

Today’s Observations:

7 A.M.
Weather: Broken altocumulus
Temperature: 65F; Dew Point: 55F; Wind: WSW at 9G15 kts
Sea-level pressure: 30.14 ins. Hg, rising, then more slowly
Visibility: 70 miles, distant haze in all directions
6-hr Max temp: 65F
6-hr Min temp: 60F
24-hr precip: 0.00 in.
BHO SA 1155 E160 BKN 70 208/65/55/2509G15/014/ DSNT HZ ALQDS/
8/050 51008 10065 20060

10 A.M.
Weather: Broken altocumulus, overcast altostratus
Temperature: 74F; Dew Point: 55F; Wind: WSW at 7 kts
Sea-level pressure: 30.14 ins. Hg, rising then falling
Visibility: 40 miles, distant haze in all directions
BHO SA 1455 E140 BKN 200 OVC 40 207/74/55/2407/014/
DSNT HZ ALQDS/ 8/02/ 58001

1 P.M.
Weather: Few cumulus NNE-W, broken altocumulus, overcast altostratus
Temperature: 78F; Dew Point: 57F; Wind: SSW at 10G16 kts,
Wind direction: variable SSE-W
Sea-level pressure: 30.10 ins. Hg, steady then falling
Visibility: 40 miles, distant haze in all directions
6-hr Max temp: 78F
6-hr Min temp: 65F
BHO SA 1755 E140 BKN 200 OVC 40 194/78/57/2110G16/010/ FEW CU NNE-W
DSNT HZ ALQDS WND 15V27/ 8/11/ 58013 10078 20065

 

SUMMARY FOR WEDNESDAY, JUNE 28, 2017

TEMPERATURE (DEGREES F)
MAX…..76   NORMAL…..79
MIN…..52   NORMAL…..61
MEAN….64   NORMAL…..70

DEPARTURE FROM 30-YEAR NORMAL…………………….-6
TOTAL DEPARTURE FOR THE MONTH……………………+45 [+1.4 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………1   DEPARTURE………..0
TOTAL HEATING UNITS FOR THE MONTH…………..63   DEPARTURE……….-9
TOTAL HEATING UNITS FOR THE SEASON………..5725   DEPARTURE……..-650
TOTAL HEATING UNITS LAST SEASON TO DATE……5282   DIFFERENCE…….+443

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………0   DEPARTURE……….-5
TOTAL COOLING UNITS FOR THE MONTH………….132   DEPARTURE………+39
TOTAL COOLING UNITS FOR THE SEASON…………188   DEPARTURE………+71
TOTAL COOLING UNITS LAST SEASON TO DATE…….136   DEPARTURE………+52

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….28 W AT 2:02 P.M.*
AERO……………………28 W AT 2:03 P.M.
ASOS…………………….M
DAVIS…………………..27 W AT 1:52 P.M. RMY 28
FASTEST MILE FOR YESTERDAY…………………20 W AT 1:55 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….M
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..19 W AT 1:58 P.M.
AVERAGE WIND SPEED AND DIRECTION………….12.0 W
ASOS…………………….M
DAVIS…………………10.5 W [274 DEG.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE……-0.10
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….5.92  DEPARTURE……+1.84
ASOS…………..5.98
TOTAL PRECIPITATION FOR THE YEAR……….31.26  DEPARTURE……+4.52
ASOS……………N/A ***
*** ASOS annual total not available due to erroneous readings

 

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

6/1  78/55/67/+5/0.06/706/78               39 NW  AERO 39 NW  RMY 41
6/2  70/50/60/-2/T/652/72                  32 WNW AERO 35 WNW RMY 34
6/3  66/47/57/-5/0.01/472/52               23 NW  AERO 25 NW  RMY 24
6/4  71/49/60/-3/0.28/490/54               21 SSE*AERO 21 SW  RMY N/A
6/5  55/49/52/-11/1.20/000/00              32 NE  AERO 35 NE  RMY N/A
6/6  49/45/47/-16/1.36/000/00              40 ENE AERO 43 ENE RMY 43
6/7  65/47/56/-8/0.05/519/57               21 NNE AERO 18 NE* RMY 20
6/8  76/52/64/0/0.00/602/66                21 SSE AERO 21 SSE RMY 18
6/9  78/53/66/+2/0.16/438/48               48 N   AERO 54 N   RMY 52 TSTM
6/10 83/59/71/+6/0.00/722/79               25 SSW AERO 28 SSW RMY 27
6/11 89/64/77/+12/0.00/704/77              29 SW  AERO 32 WSW RMY 30
6/12 94/69/82/+17/0.00/851/93              28 W   AERO 29 W   RMY 28
6/13 92/67/80/+15/0.03/796/87              25 W   AERO 28 WNW RMY 28
6/14 78/56/67/+1/0.02/889/97               20 S   AERO 20 S   RMY 20
6/15 75/54/65/-1/0.00/870/95               25 SSW AERO 29 S   RMY 30
6/16 70/56/63/-3/2.14/073/08               28 S   AERO 29 S   RMY N/A
6/17 70/58/64/-3/0.01/000/00               18 S   AERO 18 S   RMY N/A
6/18 82/65/74/+7/T/394/43                  33 SSW*AERO 35 SSW RMY 37
6/19 82/67/75/+8/0.05/312/34               40 S   AERO 43 S   RMY 43
6/20 84/66/75/+7/0.25/651/71               38 SW  AERO 44 SW  RMY 40
6/21 83/64/74/+6/0.00/734/80               29 W   AERO 30 W   RMY 30
6/22 83/59/71/+3/0.00/779/85               23 W   AERO 22 W   RMY 21
6/23 88/66/77/+9/0.00/…/..               33 S   AERO 36 S   RMY 36
6/24 84/68/76/+7/0.19/…/..               28 WNW AERO 31 WNW RMY 32
6/25 83/61/72/+3/T/…/..                  29 WNW AERO 35 WNW RMY 34
6/26 79/57/68/-1/0.00/…/..               24 W   AERO 24 W   RMY 23
6/27 74/55/65/-4/0.11/…/..               43 S   AERO 45 S   RMY 45
6/28 76/52/64/-6/0.00/…/..               28 W   AERO 28 W   RMY 28

6/29 Low temp since midnight is 60F; normal low is now 61F

 

DAILY RECORDS FOR JUNE

6/12/17: DAILY RECORD MAXIMUM TEMPERATURE OF 94F,
BREAKS PREVIOUS RECORD OF 92F SET IN 1973

6/12/17: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 69F,
TIES PREVIOUS RECORD SET IN 1942

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

RECORDS FOR JUNE 29
HIGH 93F IN 1933
LOW 42F IN 1919
PRECIP 1.60 INS IN 1889
PEAK GUST 49 MPH S IN 1957

RECORDS FOR JUNE 30
HIGH 94F IN 1964
LOW 47F IN 191 9
PRECIP 3.04 INS IN 1921
PEAK GUST 51 MPH WNW IN 1957

TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle

Category: Daily Discussions

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