BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, JULY 2, 2012
ALL TIMES ARE IN EASTERN STANDARD TIME
HIGH TEMPERATURE FALLS JUST SHORT OF 90F AGAIN
THUNDERSTORM ACTIVITY PASSED TO THE SOUTH OF
THE OBSERVATORY YESTERDAY AFTERNOON WITH
BOOMS OF THUNDER BUT VERY LITTLE RAINFALL...
On the past two days, June 30 and July 1, our high temperature
has reached 89F just short of the 90-degree mark so we don't
seem to be in line for a heat wave at least here at the
Observatory.
Thunderstorms, some of them severe, developed across Connecticut
and moved eastward into Rhode Island and southeast Massachsetts.
The northern edge of this storm complex reached here to bring
just 0.01 inch of rainfall along with booms of thunder during
the late afternoon.
As June finishes below normal temperature-wise, this marks only the
fourth time since January 2010 where the average monthly temperature
finished below normal:
June 2012: -1.3 degrees
June 2011: -0.6 degrees
January 2011: -1.4 degrees
December 2010: -1.6 degrees
PRELIMINARY JUNE 2012 STATS
Temperature Deg. F
Av. Max. 73.4
Av. Min. 56.1
Average 64.8 [-1.3]
24-hour corr. mean: 64.3
Max. 94 on 21st
Min. 47 on 4th and 5th
Precip: 4.45 ins. [+0.14]
Hail (small) T on 7th
Sunshine: 14953 mins./27362 or 55%
Sunshine: Campbell-Stokes card: 14342 or 55%
additional data to follow....later....
Today's observations:
7 A.M.
Weather: Broken altocumulus castellanus (2 levels)
Temperature: 70F; Dew Point: 63F; Relative Humidity: 76%
Wind: NNW at 6 kts
Sea-level pressure: 29.88 in Hg, rising then rising more rapidly
Visibility: 50 miles, 65 miles WNW-NW, light distant haze
24-hour precip: 0.01 inch
6-hour min. temp: 66F
BHO SA 1155 E60 BKN 85 BKN 50 119/70/63/3406/988/ ACC ALQDS
VSBY WNW-NW 65 LGT DSNT HZ/ 8/080 53016 MANUAL 70001 10070 20066
10 A.M.
Weather: Scatteered altocumulus floccus and few castellanus,
mostly SE-SW-NW, cumulus forming mostly SE-SW-N, moderate cumulus forming
Temperature: 76F; Dew Point: 58F; Relative Humidity: 53%
Wind: WNW at 9 kts,
Wind: Direction variable WSW-N
Sea-level pressure: 29.89 in Hg, rising slightly
Visibility: 60 miles, NW 70 miles, light distant haze
BHO SA 1455 110 SCT 60 123/76/58/3009/989/ CU/MDT CU FRMG MSTLY
SE-SW-N ACC/ACSL SE-SW-NW WND 24V36/ 8/280 51004
1 P.M.
Weather: Scattered cumulus, towering cumulus, moderate cumulus,
scattered altocumulus cumulogenitus, shower of rain/virga distant
to the west, clear sky NE-SE
Temperature: 82F; Dew Point: 58F; Relative Humidity: 43%
Wind: W @ 8 kts,
Wind: Direction variable SW-NNW
Sea-level pressure: 29.86 in Hg, falling
Visibility: 60 miles, 70 miles NW, light distant haze
6-hour max. temp: 87F
BHO SA 1755 60 SCT 80 SCT 110 SCT 60 113/82/58/2808/986/ TCU VC SE
CU/MDT ALQDS XCPT NE-E VSBY NW 70 W SHRA/VIRGA DSNT W CLR SKY DSNT NE-SE
WND 23V33/ 8/260 58010 10082 20070
WEATHER SUMMARY FOR SUNDAY, JULY 1
TEMPERATURE (DEGREES F)
MAX.....89 NORMAL.....79
MIN.....67 NORMAL.....61
MEAN....78 NORMAL.....70
DEPARTURE FROM 30-YEAR NORMAL.......................+8
TOTAL DEPARTURE FOR THE MONTH.......................+8
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............33 WSW AT 3:38 P.M.
AERO..................32 WSW AT 3:38 P.M.
ASOS..................33 WSW AT 3:39 P.M.
DAVIS.................29 WSW AT 3:38 P.M. RMY 34
THE FASTEST MILE FOR YESTERDAY...........22 WSW AT 3:39 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE............21 WSW AT 3:40 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE...........20 SW AT 3:40 P.M.
AVERAGE WIND SPEED AND DIRECTION.......10.7 W
ASOS................10.3
DAVIS................9.8 W [260 deg]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.01 DEPARTURE...........-0.10
ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........0.01 DEPARTURE...........-0.10
ASOS..............0.00
TOTAL PRECIPITATION FOR THE YEAR..........17.70 DEPARTURE...........-9.38
ASOS.............17.62
PRELIMINARY CLIMATE SUMMARY FOR JUNE 2012 AND JULY 2012 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane wind recording system gust when significant
RMY: RMY = R.M. Young wind gust recording system added 8/9/2011
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized
6/1 67/53/60/-2/0.00/742/82 28 ENE AERO 28 MPH ENE RMY 29
6/2 63/52/58/-4/0.80/000/00 39 SE AERO 39 MPH SE RMY 40
6/3 62/50/56/-6/0.01/082/09 31 N AERO 28 MPH N RMY 29
6/4 50/47/49/-14/0.58/000/00 44 NNE AERO 43 MPH NNE RMY 43
6/5 54/47/51/-12/0.23/009/01 23 NNE AERO 18 MPH NNE RMY N/A
6/6 63/48/56/-7/0.01/310/34 16 ENE AERO 14 MPH ENE RMY 15
6/7 70/50/60/-4/0.27/328/36 31 NE AERO 31 MPH NE RMY 32 TSTM,1/8" HAIL
6/8 76/51/64/0/0.03/502/55 25 WSW AERO 25 MPH WNW RMY 26 TSTM
6/9 76/56/66/+2/T/822/90 25 WNW AERO 24 MPH WNW RMY 24
6/10 78/56/67/+2/0.00/868/95 21 E AERO 18 MPH E RMY 18
6/11 76/55/66/+1/0.00/521/57 23 S AERO 21 MPH S RMY 22
6/12 73/57/65/0/0.03/320/35 29 S AERO 29 MPH S RMY 30
6/13 63/60/62/-3/0.59/000/00 25 S AERO 23 MPH S RMY N/A
6/14 69/58/64/-2/0.00/624/68 32 NNE AERO 29 MPH NE RMY 31
6/15 68/54/61/-5/0.00/890/97 28 ENE AERO 24 MPH ENE RMY 25
6/16 64/51/58/-8/T/485/53 28 NE AERO 24 MPH NE RMY 27
6/17 67/50/59/-8/0.00/752/82 21 E AERO 17 MPH E RMY 19
6/18 68/50/59/-8/0.00/761/83 21 S AERO 20 MPH S RMY 20
6/19 73/53/63/-4/0.00/284/31 24 SW AERO 23 MPH SW RMY 24
6/20 93/62/78/+10/0.00/844/92 22 SW AERO 22 MPH SW RMY N/A
6/21 94/74/84/+16/0.00/872/95 22 NW AERO 22 MPH NW RMY 21
6/22 93/69/81/+13/0.13/633/69 42 W AERO 39 MPH W RMY 43 TSTM
6/23 85/61/73/+5/0.35/504/55 48 NNW AERO 50 MPH NNW RMY 46 TSTM
6/24 82/59/71/+2/0.00/715/78 22 NW AERO 21 MPH NW RMY 21
6/25 71/59/65/-4/1.38/193/21 32 S AERO 32 MPH S RMY 32 TSTM
6/26 71/56/64/-5/T/339/37 35 NW AERO 36 MPH NW RMY 36 TSTM
6/27 76/55/66/-3/T/321/35 29 W AERO 28 MPH W RMY 30
6/28 83/59/71/+1/0.00/833/91 25 WNW AERO 24 MPH WNW RMY 26
6/29 86/65/76/+6/0.04/549/60 29 WNW AERO 28 MPH WNW RMY 30
6/30 89/67/78/+8/0.00/850/93 32 W AERO 33 MPH W RMY 33
7/1 89/67/78/+8/0.01/.../.. 33 WSW AERO 32 MPH WSW RMY 34
7/2 morning low temp: 66F; the normal low is now 62F
DAILY RECORDS FOR JUNE 2012
6/4 - NEW DAILY RECORD LOW MAXIMUM TEMP OF 50F;
surpasses the previous record of 51F in 1891.
6/21 - NEW DAILY RECORD HIGH MAXIMUM TEMP OF 94F;
surpasses the previous record of 92F in 1949.
6/21 - TIED DAILY RECORD HIGH MINIMUM TEMP OF 74F;
ties the current record of 74F in 1923.
6/22 - TIED DAILY RECORD HIGH MAXIMUM TEMP OF 93F;
ties the current record of 93F in 1921.
6/22 - TIED DAILY RECORD HIGH MINIMUM TEMP OF 69F;
ties the current record of 69F in 1892.
6/25 - NEW DAILY RECORD MAXIMUM PRECIPITATION OF 1.38 INS;
surpasses the previous record of 1.10 ins. in 2006.
DAILY RECORDS FOR JULY 2012
None so far.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR JULY 2
HIGH 95F IN 1963
LOW 47F IN 1988
PRECIP 1.42 INS IN 1986
PEAK GUST 45 MPH SW IN 1999
RECORDS FOR JULY 3
HIGH 99F IN 1911
LOW 47F IN 1914
PRECIP 1.36 IN 1985
PEAK GUST 52 MPH NW IN 1963
TODAY'S REPORT PREPARED BY: Robert Skilling/Patrick Peters
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