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Monday, June 6, 2016

June 7, 2016

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY MONDAY, 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
MONDAY, JUNE 6, 2016
ALL TIMES ARE IN EASTERN STANDARD TIME

SUNSHINE RETURNS TODAY AFTER A GLOOMY DAMP DAY YESTERDAY
BENEFICIAL RAINFALL LATE YESTERDAY 0.76 INCH
RAINFALL MODERATE TO HEAVY LATE IN THE AFTERNOON
TEMPERATURES NEAR NORMAL FOR SUNDAY AVERAGED 64 DEGREES

The approach of a warm frontal system late yesterday
brought some downpours of rain with a maximum of 0.28 inches
falling for one 60-minute period ending at 5:40 P.M. EDT
and 0.45 inch in two hours ending about 7 P.M. EDT
Temperatures remained in the humid 60’s yesterday with
high of 67 degrees during the evening after the passage
of the warm front. The low of 60 degrees occurred during
the moderate to heavy rain in the late afternoon.

PRELIMINARY STATS FOR MAY 2016

TEMPERATURE, Deg. F
Avg. Max. 66.9 [+0.6] Avg. Min. 48.8 [+1.0] Mean      57.9 [+0.8] 24-hour corrected mean: 57.2
Max. for month: 92 on 28th
Min. for month: 38 on 16th

HEATING DEGREE DAYS
Total heating units: 256 [-12] Total for the season: 5248 [-1055] Total for last season: 6404

COOLING DEGREE DAYS
Total cooling units: 45 [+23] Total for the season: 48 [+24] Total for last season: 49

PRECIPITATION, Inches
Total: 3.13 [-0.98] Greatest in 24 hrs: 0.94 in. on 30th

SNOWFALL, Inches
Total: T [0.0] Greatest in 24 hrs: T on 1st

WIND, mph
Avg. uncorrected wind speed: 10.7
Avg. corrected wind speed: 11.3
Prevailing wind direction: W at 15%
Peak gust and direction: 50 W on 15th

SUNSHINE:
Campbell-Stokes card minutes: 12390 mins. of possible 26226 or 47%
Astronomical total minutes: 12842 mins. of possible 27208 or 47%

Today’s Observations:

7 A.M.
Weather: Scattered altocumulus, scattered cirrus, few cumulus
Temperature: 66F; Dew Point: 64F; Wind: WSW at 8 kts
Sea-level pressure: 29.62 ins. Hg, rising then more slowly
Visibility: 20 miles, distant fog
6-hr Max temp: 66F
6-hr Min temp: 63F
24-hr precip: 0.76
BHO SA 1155 74 SCT 250 SCT 20 029/66/64/2408/962/ FEW CU ALQDS
DSNT FG/ 8/531 51009 ASOS 70078 MANUAL 70076 10066 20063

10 A.M.
Weather: Scattered cumulus/strocumulus, scattered cirrus
Temperature: 72F; Dew Point: 61F; Wind: W at 10 kts,
Wind: Direction variable SSW-WNW
Sea-level pressure: 29.63 ins. Hg, rising slightly
Visibility: 35 miles, distant haze
BHO SA 1455 28 SCT 250 SCT 35 032/72/61/2610/963/ SCT V BKN CI DSNT SSE
DSNT HZ WND 21V30/ 8/401 51003

1 P.M.
Weather: Scattered cumulus
Temperature: 77F; Dew Point: 58F; Wind: SW at 12 kts.
Wind: Direction S-W
Sea-level pressure: 29.62 ins. Hg, falling slightly
Visibility: 30 miles, distant haze
6-hr Max temp: 78F
6-hr Min temp: 66F
BHO SA 1755 32 SCT 30 029/77/58/2312/962/ DSNT HZ WND 19V26/ 8/100
58003 10078 20066

SUMMARY FOR SUNDAY, JUNE 5, 2016

TEMPERATURE (DEGREES F)
MAX…..67   NORMAL…..72
MIN…..60   NORMAL…..54
MEAN….64   NORMAL…..63

DEPARTURE FROM 30-YEAR NORMAL…………………….+1
TOTAL DEPARTURE FOR THE MONTH……………………+11 [+2.0 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………1   DEPARTURE……….-3
TOTAL HEATING UNITS FOR THE MONTH……………8   DEPARTURE………-14
TOTAL HEATING UNITS FOR THE SEASON………..5256   DEPARTURE…….-1069
TOTAL HEATING UNITS LAST SEASON TO DATE……6469   DIFFERENCE……-1213

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………0   DEPARTURE……….-2
TOTAL COOLING UNITS FOR THE MONTH……………6   DEPARTURE……….-3
TOTAL COOLING UNITS FOR THE SEASON………….54   DEPARTURE………+21
TOTAL COOLING UNITS LAST SEASON TO DATE……..49   DIFFERENCE………+5

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….32 SSE AT  6:33 P.M.
ASOS……………………33 S   AT  7:25 P.M.
DAVIS…………………..32 SSE AT  6:33 P.M. RMY 34
FASTEST MILE FOR YESTERDAY…………………25 SSE AT  6:34 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………23 SSE AT  6:34 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..23 SSE AT  6:34 P.M.
AVERAGE WIND SPEED AND DIRECTION………….11.6 S
ASOS………………….12.0
DAVIS…………………10.9 SSE [160 Deg.] * Last of several occurrences

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.76  DEPARTURE……+0.59
ASOS…………..0.78
TOTAL PRECIPITATION FOR THE MONTH……….0.76  DEPARTURE……-0.07
ASOS…………..0.78
TOTAL PRECIPITATION FOR THE YEAR……….20.83  DEPARTURE……-2.66
ASOS………….21.22

PRELIMINARY CLIMATE SUMMARY FOR MAY 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

5/1 52/39/46/-7/0.08/T/000/00               21 S   AERO 22 SE  RMY 20
5/2 50/41/46/-7/0.31/0.0/000/00             20 NE  AERO 21 NE  RMY 18
5/3 48/43/46/-7/0.16/0.0/000/00             16 E   AERO 16 E   RMY 17
5/4 48/41/45/-9/0.46/0.0/000/00             33 NE  AERO 35 NE  RMY 34
5/5 44/41/43/-11/0.30/0.0/000/00            39 NNE AERO 41 NNE RMY 39
5/6 54/43/49/-5/0.13/0.0/360/42             28 ENE AERO 29 N   RMY 26
5/7 51/43/47/-8/0.06/0.0/000/00             25 NE  AERO 25 NE  RMY 23
5/8 60/46/53/-2/0.10/0.0/284/33             47 W   AERO 53 W   RMY 49
5/9 65/43/54/-1/0.00/0.0/743/86             40 W   AERO 44 W   RMY 40
5/10 69/40/55/0/0.00/0.0/806/93             22 W   AERO 25 WNW RMY 22
5/11 76/50/63/+7/0.00/0.0/808/93            22 WNW AERO 23 WNW*RMY 22
5/12 75/54/65/+9/0.00/0.0/819/94            23 NNE AERO 25 S   RMY 23
5/13 74/52/63/+7/0.21/0.0/079/09            27 S   AERO 27 S   RMY 26
5/14 78/54/66/+9/0.00/0.0/656/75            35 SSW*AERO 40 SSW RMY 37
5/15 60/41/51/-6/0.00/0.0/588/67            50 W   AERO 54 W   RMY 49
5/16 58/38/48/-9/0.00/0.0/800/91            45 W*  AERO 51 WNW RMY 49
5/17 69/47/58/+1/T/0.0/344/39               32 W   AERO 38 W   RMY 38
5/18 64/48/56/-2/0.00/0.0/804/91            24 NE  AERO 26 NNW RMY N/A
5/19 66/49/58/0/0.26/0.0/283/32             23 WNW AERO 26 WNW RMY 25
5/20 73/46/60/+2/0.00/0.0/798/90            20 SSE AERO 22 SSE RMY 21
5/21 74/53/64/+5/0.00/0.0/587/66            21 S   AERO 23 S   RMY 21
5/22 64/53/59/0/T/0.0/320/36                26 ENE AERO 29 ENE RMY 26
5/23 74/51/63/+4/T/0.0/491/55               22 ENE AERO 31 ENE RMY N/A
5/24 56/50/53/-6/0.12/0.0/000/00            30 ENE AERO 31 ENE RMY 29  TSTM
5/25 86/51/69/+9/0.00/0.0/635/71            25 W   AERO 28 W   RMY 25
5/26 86/64/75/+15/0.00/0.0/610/68           21 SE  AERO 23 SE  RMY 21
5/27 81/60/71/+11/0.00/0.0/548/61           26 S   AERO 30 S   RMY 29
5/28 92/63/78/+17/0.00/0.0/711/79           22 SSW AERO 22 SSW RMY N/A
5/29 72/51/62/+1/0.00/0.0/009/01            18 NE  AERO 20 NE  RMY 18
5/30 71/52/62/+1/0.94/0.0/009/01            25 SSW AERO 28 SSW RMY 27
5/31 84/67/76/+15/0.00/0.0/750/83           25 W   AERO 29 WSW RMY 28

6/1 71/54/63/+1/0.00/…/..                 26 NE  AERO 30 NE  RMY N/A
6/2 68/54/61/-1/0.00/…/..               # 21 NE  AERO 22 NE  RMY 21
6/3 70/57/64/+2/T/…/..                    16 SSW AERO 17 SSW RMY 16
6/4 81/61/71/+8/0.00/…/..                 18 S   AERO 21 S   RMY 20
6/5 67/60/64/+1/0.76/000/00                 32 SSE AERO 36 SSE RMY 34

6/6 low temp since midnight is 63F; normal low now 54F

* Last of several occurrences
# 6/2 Peak gust corrected from 28 to 21 MPH (420C)
(on this discussion only, 3rd,4th)

DAILY RECORDS FOR JUNE 2016
None so far

DAILY RECORDS FOR MAY 2016

5/1/16:  DAILY RECORD SNOWFALL OF A TRACE, (SLEET)
TIES PREVIOUS RECORDS SET IN 1905, 1917, 1921, and 1995

5/28/16: DAILY RECORD MAXIMUM TEMP. OF 92F,
PREVIOUS RECORD OF 90F SET IN 1914

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

RECORDS FOR JUNE 6
HIGH 95F IN 1925
LOW 42F IN 1885, 1894, 1920, 1945
PRECIP 3.61 INS IN 2000
PEAK GUST 58 MPH NE IN 2000

RECORDS FOR JUNE 7
HIGH 93F IN 1999
LOW 40F IN 1932
PRECIP 4.01 INS IN 2006
PEAK GUST 58 MPH NE IN 1982

TODAY’S REPORT PREPARED BY: Robert Skilling/Cece Borries-Strigle

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