BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, JUNE 28, 2012
ALL TIMES ARE IN EASTERN STANDARD TIME
 
MUCH WARMER TEMPERATURES BEGINNING A RETURN VISIT STARTING TODAY
SUNSHINE AND TEMPERATURES RISING INTO THE 80'S STILL WITH
LOW DEW POINTS IN THE 50'S.
 
Temperatures were moving up through the lower 80's early this
afternoon from an early morning low of 59F. A much warmer  
trend over the next couple of days will not be enough to
prevent June from becoming the first cooler than normal
month since June, 2011, one year ago!
 
Today's observations:
 
7 A.M.
Weather: Scattered altocumulus and altocumulus lenticularis   
Temperature: 66F; Dew Point: 57F; Wind: W at 10 kts
Sea-level pressure: 29.78 in Hg rising then rising more slowly 
Visibility: 30 miles, 45 miles WNW, Distant Haze 
24-hour precip: trace 
6-hour min. temp: 59F
BHO SA 1155 120 SCT 30 084/66/57/2812/978/ AC/ACSL NW-NE-SSE 
VSBY WNW 45 DSNT HZ/ 8/040 51010 MANUAL 70000 10066 20059
 
10 A.M.
Weather: Cumulus fractus forming overhead; cumulus and moderate 
cumulus WNW-N-ENE; altocumulus lenticularis WNW-NE-SSW
Temperature: 75F; Dew Point: 55F; Wind: W at 10 kts
Wind direction: Variable WSW-WNW 
Sea-level pressure: 29.78 in Hg falling  
Visibility: 65 miles, distant Haze 
BHO SA 1455 110 SCT 65 080/75/55/2810/978/ CUFRA FRMG OVHD
CUFRA/CU/MDT CU WNW-N-ENE ACSL WNW-NE-SSW/ WND 24V30/ 8/240 58004 
 
1 P.M.
Weather: Scattered cumulus and altocumulus lenticularis all quadrants;
Virga/Shower distant E-ESE
Temperature: 81F; Dew Point: 55F; Wind: WNW at 10G20 kts,
Wind: Direction variable WSW TO WNW
Sea-level pressure: 29.75 in Hg, falling
Visibility: 65 miles Distant Haze
6-hour max. temp: 81F 
BHO SA 1755 65 SCT 110 SCT 65 073/81/55/2810/975/ CU/MDT CU ALQDS
ACSL ALQDS VIRGA/SHRA DSNT E-ESE WND 24V30 GST TO 22 KTS PST HR LGT
DSNT HZ/ 8/240 58007 10081 20066  
 
WEATHER SUMMARY FOR WEDNESDAY, JUNE 27
 
TEMPERATURE (DEGREES F)
MAX.....76    NORMAL.....78
MIN.....55    NORMAL.....60
MEAN....66    NORMAL.....69
 
DEPARTURE FROM 30-YEAR NORMAL.......................-3
TOTAL DEPARTURE FOR THE MONTH......................-48 [-2.0 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY...............0   DEPARTURE..........-1
TOTAL HEATING UNITS FOR THE MONTH..............96   DEPARTURE.........+25
TOTAL HEATING UNITS FOR THE SEASON...........4984   DEPARTURE.......-1384
TOTAL HEATING UNITS LAST SEASON TO DATE......6239   DIFFERENCE......-1255
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............29 W   AT  3:54 P.M. *
                   AERO..................28 W   AT  1:44 P.M.
                   ASOS..................29 W   AT  3:55 P.M.
                   DAVIS.................N/A                  RMY 30
THE FASTEST MILE FOR YESTERDAY...........23 W   AT  1:44 P.M.  
MAXIMUM 2-MINUTE ASOS AVERAGE............22 W   AT  1:46 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE...........N/A
AVERAGE WIND SPEED AND DIRECTION.......13.3 W
                   ASOS................12.2
                   DAVIS...............N/A
N/A – Davis system of observations out of service for 6 hours
      On Wednesday; much of the data not easily available
      On its system.
* last of several occurrences...
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....trace  DEPARTURE...........-0.12
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........4.41   DEPARTURE...........+0.43
                         ASOS..............4.33
TOTAL PRECIPITATION FOR THE YEAR..........17.65   DEPARTURE...........-8.99
                         ASOS.............17.58
 
PRELIMINARY CLIMATE SUMMARY FOR JUNE 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 85/61/71/+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
6/27 76/55/66/-3/T/321/35           29 W   AERO 28 MPH W   RMY 30
 
6/28 our morning low temp: 59F; the normal low is now 61F
 
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 EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
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
 
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
 
TODAY'S REPORT PREPARED BY: Robert Skilling/Jonathan O'Brien/William Wilson/ 
                            Joey McNamara