BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, JUNE 8, 2012
ALL TIMES ARE IN EASTERN STANDARD TIME
 
YESTERDAY'S RAINFALL EVENT AMOUNTS TO 0.27 INCH
DENSE EARLY MORNING FOG YIELDS TO MOSTLY SUNNY SKIES
 
Yesterday's rainfall event totaled 0.27 inch of rain here on the summit.
Rumbles of thunder and small hail were heard/observed yesterday afternoon.
Dense fog blanketed the summit this morning reducing visibility to only 1/16
mile. Around 9:30 EDT the fog began to lift increasing visibility back to
around 60 miles. Moderate cumulus clouds have been developing and some of
these clusters have the potential to become thunderstorms later this
afternoon as a cold front drops down from Canada.
 
Our cool start to June continues, as we have yet another day of below normal
temperatures. This streak will most likely end today however as temperatures
are expected to be in the mid to upper 70s albeit a chance of showers later
this afternoon. The latter part of this weekend looks nice as a high pressure
system builds in from the southwest giving us mostly sunny skies and
temperatures in the high 70s and even low 80s.
 
Today's observations:
 
7 A.M.
Weather: Sky obscured with dense, slowly dissipating fog. Sun dimly visible.
Temperature: 54F, Dew Point: 54F; Wind: SSW at 4 kts
Sea-level pressure: 29.93 inches Hg, rising then steady
Visibility: 1/16 mile, dense fog
24-hour precip: 0.27 inch
6-hour min. temp: 51F
BHO SA 1155 W1 X 1/16F 137/54/54/2004/993/ DNS FG SLWLY DSPTNG SUN DMLY VSBL/
8//// 51003 MANUAL 70027 ASOS 70024 10054 20051
 
10 A.M.
Weather: Scattered cumulus/cumulus fractus, scattered dense cirrus, scattered
thin cirrus, few thin altocumulus standing lenticularis WNW-NW, few moderate
cumulus developing distant SSW-W, dense smoke layer all quadrants, hazy
Temperature: 67F, Dew Point: 58F; Wind: S at 9 kts,
Wind: Direction variable SE-SSW
Sea-level pressure: 29.92 inches Hg, falling 
Visibility: 60 miles, NNE-ENE 40, hazy
BHO SA 1455 40 SCT 70 SCT 200 SCT 250 –SCT 60 133/67/58/1809/992/ FEW THN
ACSL WNW-NW FEW MDT CU DVLPNG DSNT SSW-W DNS K LYR ALQDS HAZY VSBY LWR
NNE-ENE 40 WND 14V21/ 8/241 58004
 
1 P.M.
Weather: Scattered cumulus/cumulus fractus, scattered dense cirrus, scattered
thin cirrus, few moderate cumulus all quadrants, towering cumulus WNW, hazy
Temperature: 75F, Dew Point: 59F; Wind: SW at 9 kts,
Wind: Direction variable S-W
Sea-level pressure: 29.86 inches Hg, falling then more rapidly 
Visibility: 60 miles, hazy
6-hour max. temp: 75F
BHO SA 1755 50 SCT 200 SCT 250 SCT 113/75/59/2209/986/ FEW MDT CU ALQDS TCU
WNW HAZY WND 18V26/ 8/201 58020 10075 20054
 
 
WEATHER SUMMARY FOR THURSDAY, JUNE 7
 
TEMPERATURE (DEGREES F)
MAX.....70    NORMAL.....73
MIN.....50    NORMAL.....55
MEAN....60    NORMAL.....64
 
DEPARTURE FROM 30-YEAR NORMAL.......................-4
TOTAL DEPARTURE FOR THE MONTH......................-49 [-7.2 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY...............5   DEPARTURE..........+1
TOTAL HEATING UNITS FOR THE MONTH..............65   DEPARTURE.........+35
TOTAL HEATING UNITS FOR THE SEASON...........4953   DEPARTURE.......-1374
TOTAL HEATING UNITS LAST SEASON TO DATE......6179   DIFFERENCE......-1226
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............31 NE  AT  1:48 P.M.  
                   AERO..................31 NE  AT  1:48 P.M.  
                   ASOS..................32 NE  AT  1:48 P.M.  
                   DAVIS.................29 N   AT  1:48 P.M. RMY 32
THE FASTEST MILE FOR YESTERDAY...........19 NE  AT  1:48 P.M.  
MAXIMUM 2-MINUTE ASOS AVERAGE............22 NE  AT  1:45 P.M.  
MAXIMUM 2-MINUTE DAVIS AVERAGE...........20 NE  AT  1:45 P.M. 
AVERAGE WIND SPEED AND DIRECTION........4.5 W
                   ASOS.................4.5
                   DAVIS................4.4 SW [221 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..............0.24
TOTAL PRECIPITATION FOR THE MONTH..........1.90  DEPARTURE...........+0.73
                         ASOS..............1.84
TOTAL PRECIPITATION FOR THE YEAR..........15.14  DEPARTURE...........-8.69
                         ASOS.............15.09
 
PRELIMINARY CLIMATE SUMMARY FOR JUNE 2012 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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/.../..        28 ENE AERO 28 MPH ENE RMY 29
6/2  63/52/58/-4/0.80/.../..        39 SE  AERO 39 MPH SE  RMY 40
6/3  62/50/56/-6/0.01/.../..        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/..../.../..       23 NNE AERO 18 MPH NNE RMY N/A
6/6  63/48/56/-7/0.01/.../..        16 ENE AERO 14 MPH ENE RMY 15
6/7  70/50/60/-4/0.27/.../..        31 NE  AERO 31 MPH NE  RMY 32  TSTM
 
6/8  morning low temp: 51F; the normal low is now 55F
 
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 8
HIGH 94F IN 1984
LOW 37F IN 1932
PRECIP 1.53 INS IN 1947
PEAK GUST 86e MPH WNW IN 1946 [Record for month]
 
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
 
TODAY'S REPORT PREPARED BY: George Tabeek