BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, JUNE 13, 2012
ALL TIMES ARE IN EASTERN STANDARD TIME
 
FOG, LOW CLOUDS, LIGHT RAIN AND DRIZZLE THIS MORNING
RAINFALL CLOSE TO ONE HALF INCH
TENPS. RISING VERY SLOWLY INTO THE 60'S
 
Heavy fog and light rain prevailed during the early
hours of today having began Tuesday evening with a
very small accumulation through midnight.  However,
the total for the event had reached close to one half
inch before becoming mostly very light drizzle by
early afternoon. After a low 60F early this morning
with a dew point of 60F, both readings were rising very
slowly into the 60's early this afternoon making for
some very humid conditions.
 
Today's observations:
 
7 A.M.
Weather: Obscurement, light rain and dense fog
Temperature: 60F, Dew Point: 60F; Wind: S at 10 kts.
Wind: Direction variability SE-SSW
Sea-level pressure: 29.98 inches Hg, steady then rising 
Visibility: 1/16 variable 1/8 mile, light rain, heavy fog
6-hour min. temp: 60F
6-hourly rainfall: 0.22 inch
24-hourly rainfall: 0.27 inch 
BHO SA 1155 W3 X 1/16VR-F 152/60/60/1710/998/ VSBY 1/16V1/8
WND 14V20/ 8//// 53010 ASOS 60021 MANUAL 6022/ ASOS 70026
MANUAL 70027 10061 20060
 
10 A.M.
Weather: Broken stratus, overcast nimbostratus, light
drizzle and fog, intermittent light rain, stratus
fractus drifting below and occasionally over summit  
Temperature: 60F, Dew Point: 60F; Wind: S at 10 kts,
Sea-level pressure: 30.01 inches Hg, steady then rising
Visibility: 2 miles variable 3/4 mile to 2.5 miles,
stratus occasionally drifting over the summit  
3-hour rainfall: 0.20 inch 
BHO SA 1455 E3 BKN 7 OVC 2VL-F 161/60/60/1910/001/ STFRA DRFTG
BLO AND OCNL OVR SMT VSBY 3/4V21/2 INTMT R-/ 8/72/ 53009
ASOS 60019 MANUAL 60020
 
1 P.M.
Weather: Scattered stratus fractus, broken stratus,
overcast nimbostratus, fractus drifting below and
occasionally over summit, light drizzle occurring,
light rain ended 12:20 P.M. EST
Temperature: 62F, Dew Point: 62F; Wind: S at 8 kts,
Wind: Direction variable SSE to SW  
Sea-level pressure: 30.00 inches Hg, falling slightly
Visibility: 2 miles variable 3/4 to 3 miles,
light drizzle and stratus fractus drifting below and
occasionally over the summit
6-hour max. temp: 63F
6-hour rainfall: 0.27 inch 
BHO SA 1755 2 SCT E10 BKN 35 OVC 2VL-F 160/62/62/2008/000/
STFRA DRFTG BLO AND OCNL OVR SMT VSBY 3/4V3 WND 15V22
RE20/ 8/72/ 58001 ASOS 60025 MANUAL 6027/ 10063 20060
 
WEATHER SUMMARY FOR TUESDAY, JUNE 12
 
TEMPERATURE (DEGREES F)
MAX.....73    NORMAL.....74
MIN.....57    NORMAL.....56
MEAN....65    NORMAL.....65
 
DEPARTURE FROM 30-YEAR NORMAL........................0
TOTAL DEPARTURE FOR THE MONTH......................-44 [-3.9 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY...............0   DEPARTURE..........-3
TOTAL HEATING UNITS FOR THE MONTH..............66   DEPARTURE.........+21
TOTAL HEATING UNITS FOR THE SEASON...........4954   DEPARTURE.......-1382
TOTAL HEATING UNITS LAST SEASON TO DATE......6201   DIFFERENCE......-1247
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............29 SSW AT  3:15 P.M.
                   AERO..................29 SSW AT  2:52 P.M.
                   ASOS..................28 SSW AT  4:05 P.M.
                   DAVIS.................28 SSW AT  3:15 P.M. RMY 30
THE FASTEST MILE FOR YESTERDAY...........24 SSW AT  3:13 P.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE............23 SSW AT  3:15 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE...........22 SSW AT  3:15 P.M.
AVERAGE WIND SPEED AND DIRECTION.......14.3 S    
                   ASOS................13.0
                   DAVIS...............13.0 S [190 deg.]
* last of several occurrences.
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.27  DEPARTURE...........+0.11
                         ASOS..............0.26
TOTAL PRECIPITATION FOR THE MONTH..........2.20  DEPARTURE...........+0.23
                         ASOS..............2.13
TOTAL PRECIPITATION FOR THE YEAR..........15.44  DEPARTURE...........-9.19
                         ASOS.............15.38
 
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/..../000/00       44 NNE AERO 43 MPH NNE RMY 43
6/5  54/47/51/-12/..../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
6/8  76/51/64/0/0.03/502/55         25 WSW AERO 25 MPH WNW RMY 26  TSTM
6/9  76/56/66/+2/0.00/822/90        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/.../..        23 S   AERO 21 MPH S   RMY 22
6/12 73/57/65/0/0.03/.../..         29 S   AERO 29 MPH S   RMY 30
 
6/13 morning low temp: 60F; the normal low is now 56F
 
DAILY RECORDS FOR JUNE 2012
6/4 - NEW DAILY RECORD LOW MAXIMUM TEMP OF 50F;
surpasses the previous record of 51F in 1891.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR JUNE 13
HIGH 93F IN 1988
LOW 43F IN 1982
PRECIP 6.07 INS 1998 [Record for month]
PEAK GUST 69 MPH N IN 1956
 
RECORDS FOR JUNE 14
HIGH 93F IN 1956
LOW 41F IN 1912
PRECIP 1.49 INS 1896
PEAK GUST 55 MPH WNW IN 1958
 
TODAY'S REPORT PREPARED BY: Robert Skilling/William Wilson