Saturday, June 9, 2018

| June 9, 2018 | Reply

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

DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, JUNE 9, 2018
ALL TIMES ARE IN EASTERN STANDARD TIME

DRY AND PLEASANT SPRING DAY

It was another beautiful day here at Blue Hill, but the humidity was even lower making for more pleasant air. Dew points remained in the low 50s and upper 40s and the relative humidity at the 1:00 P.M. EST observation was just 36%. Temperatures today have been similar yesterdays with a maximum of 78F reached so far, but we had a warmer start to the day as the temperature only dropped to a minimum of 58F last night. Visibility was excellent this morning at 80 miles, but by the afternoon there was distant haze which brought it down to 70 miles. This morning, there were little clouds in the sky, with only about 1/4 of the sky covered with mainly cirrus. In the afternoon there was a layer of overcast cirrus covering the sky, but the sun was still able to shine through. Today will likely be the second day with warmer than average temperatures after the 5 day streak of cooler than average temperatures from June 3rd to June 7th. Yesterday ended up having an average temperature that was 2F above normal, but today’s average temperature will likely be higher due to the higher minimum temperature reached so far.

Today’s Observations:

7 A.M.
Weather: Few cumulus SE-SW and NW-N, few altocumulus in all directions,
scattered cirrus
Temperature: 66F; Dew Point: 51F; Wind: NNW at 5 kts,
Wind speed: Light
Sea-level pressure: 30.15 ins. Hg, rising, then more quickly
Visibility: 80 miles
6-hr Max temp: 66F
6-hr Min temp: 58F
24-hr Precip: 0.00 ins.
BHO SA 1155 250 SCT 80 209/66/51/3405/015/ FEW CU SE-SW AND NW-N FEW AC ALQDS
WND LGT/ 8/131 53012 10066 20058

10 A.M.
Weather: Few altocumulus in all directions, broken cirrus
Temperature: 74F; Dew Point: 46F; Wind: NNW at 6 kts,
Wind speed: Light
Sea-level pressure: 30.12 ins. Hg, falling, then more quickly
Visibility: 70 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 E250 BKN 70 199/74/46/3306/012/ FEW AC ALQDS WND LGT/
8/031 57010

1 P.M.
Weather: Scattered cumulus, overcast cirrus
Temperature: 77F; Dew Point: 48F; Wind: W at 8 kts
Sea-level pressure: 30.09 ins. Hg, falling, then more quickly
Visibility: 70 miles, distant haze in all directions
6-hr Max temp: 78F
6-hr Min temp: 66F
6-hr precip: 0.00 ins.
BHO SA 1755 060 SCT E250 OVC 70 189/77/48/2808/009/ DSNT HZ ALQDS/
8/102 58010 10078 20066

SUMMARY FOR FRIDAY, JUNE 8, 2018

TEMPERATURE (DEGREES F)
MAX…..79   NORMAL…..73
MIN…..52   NORMAL…..55
MEAN….66   NORMAL…..64

DEPARTURE FROM 30-YEAR NORMAL…………………….+2
TOTAL DEPARTURE FOR THE MONTH……………………-25 [-3.3 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..0   DEPARTURE………..-4
TOTAL HEATING UNITS FOR THE MONTH………….50   DEPARTURE……….+17
TOTAL HEATING UNITS FOR THE SEASON……….5897   DEPARTURE………-439
TOTAL HEATING UNITS LAST SEASON TO DATE…..5721   DIFFERENCE……..+176

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………1   DEPARTURE……….-1
TOTAL COOLING UNITS FOR THE MONTH……………8   DEPARTURE………-11
TOTAL COOLING UNITS FOR THE SEASON………….70   DEPARTURE………+27
TOTAL COOLING UNITS LAST SEASON TO DATE……..59   DEPARTURE………+11

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..20  SW  AT 2:31 A.M.
AERO…………………….17  SW  AT 2:32 A.M.
ASOS…………………….19  SW  AT 2:32 A.M.
DAVIS……………………19  M   AT 2:26 A.M.** RMY 18
FASTEST MILE FOR YESTERDAY………………….15  SW  AT 4:39 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….15  SW  AT 4:40 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………15  M   AT 2:33 A.M.**
AVERAGE WIND SPEED AND DIRECTION……………11.5 SSW
ASOS……………………12.5
DAVIS…………………..11.7
** Davis direction malfunctioning

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE……-0.16
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….1.01  DEPARTURE……-0.32
ASOS…………..1.04
TOTAL PRECIPITATION FOR THE YEAR……….28.33  DEPARTURE……+4.52
ASOS………….29.91

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

6/01 78/62/70/+8/T/…/..            21 S   AERO 21 S   RMY N/A
6/02 79/54/67/+5/0.00/…/..         26 ENE AERO 25 ENE RMY 27
6/03 59/45/52/-10/0.00/…/..        28 ENE AERO 25 ENE RMY N/A
6/04 52/45/49/-14/…/…/..         29 ENE AERO 26 ENE RMY 29
6/05 64/47/56/-7/…./…/..         24 N   AERO 21 N   RMY 23 TSTM
6/06 66/50/58/-5/0.00/…/..         23 S   AERO 21 S   RMY 22
6/07 69/50/60/-4/0.00/…/..         25 S   AERO 25 S   RMY 27
6/08 79/52/66/+2/0.00/…/..         20 SW  AERO 17 SW  RMY 18

6/09 Low temp since midnight is 58F; normal low is now 55F

DAILY RECORDS FOR JUNE 2018

None so far.

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

RECORDS FOR JUNE 9
HIGH 94F IN 2008
LOW 40F IN 1980
PRECIP 2.08 INCHES IN 1931
PEAK GUST 67 MPH NW IN 1973

RECORDS FOR JUNE 10
HIGH 98F IN 2008
LOW 42F IN 1913,1920
PRECIP 2.51 INCHES IN 1931
PEAK GUST 60e MPH NW IN 1941

TODAY’S REPORT PREPARED BY: Lizzy Suzedell

 

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