BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, JUNE 8, 2013
ALL TIMES ARE IN EASTERN STANDARD TIME
 
CLEARING SKIES AND CLIMBING TEMPERATURES AFTER CLOUDY, DRIZZLY MORNING -
ANDREA LEAVES AFTER DROPPING THAN 4 INCHES OF RAIN
 
A cool, damp morning in the mid 50s marked the end of the storm formerly
known as Tropical Storm Andrea. The summit was cloaked in stratocumulus
during the morning's first reading limiting visibility to 1/4 mile in all
directions. The drizzle ceased and clouds lifted between 8:00 A.M. and 9:00
A.M. EST leaving the overcast to slowly break down throughout the day.
Temps climbed well into the 60s as pressure slowly climbed and humidity
fell.
 
Between 7:00 A.M. Friday and 7:00 A.M. this morning rain accumulated
to a total of 4.09 inches, the heaviest of which coming in the evening
hours Friday. These heavy periods also coincided with the fastest winds
of the night, peaking at 33 MPH. 0.21 inch of rain fell prior to 7:00 A.M.
on Friday, and only a trace was measured after 7:00 A.M. Saturday,
tallying to a grand total of 4.30 inches of rain from this storm.
 
Today's Observations:
 
7 A.M.
Weather: Sky obscured by light drizzle and dense fog, stratus drifting
over summit
Temperature: 54F; Dew Point: 53F; Wind: NNW at 14 kts.
Sea-level pressure: 29.62 ins. Hg, decreasing then increasing
Visibility: 1/4 mile, dense fog and light drizzle
24-hr precip: 4.09 inches
6-hr precip (ASOS): 0.6 inch
6-hr max. temp: 54
6-hr min. temp: 54
BHO SA 1155 W3 X 1/4L-F 031/54/53/3414/962/ STRA DRFTNG OVR SMT DZ-/
8//// 55003 MANUAL 70409 ASOS 70391 ASOS 60060 10054 20054
 
10 A.M.
Weather: Overcast stratocumulus with few breaks, sun dimly visible
through overcast
Temperature: 59F; Dew Point: 57F; Wind: WNW at 12 kts.
Sea-level pressure: 29.76 ins. Hg, rising then rising more slowly
Visibility: 75 miles
3-hr precip: Trace
BHO SA 1455 E12 OVC 75 077/59/57/3012/976/ SN DMLY VSBL THRU OVC
FEW BINOVC/ 8/5// 51046 6000/
 
1 P.M.
Weather: Scattered cumulus humilis, scattered cirrus/cirrocumulus
Temperature: 72F; Dew Point: 61F; Wind: SW at 10 kts.
Sea-level pressure: 29.83 ins. Hg, rising then rising more slowly
Visibility: 75 miles
6-hour max. temp: 72F
BHO SA 1755 025 SCT 200 SCT 75 102/72/61/2510/983/ 8/502/ 51025
MANUAL 6000/ ASOS 60001 10072 20054
 
WEATHER SUMMARY FOR FRIDAY, JUNE 7, 2013
 
TEMPERATURE (DEGREES F)
MAX.....57     NORMAL.....73
MIN.....51     NORMAL.....55
MEAN....54     NORMAL.....64
 
DEPARTURE FROM 30-YEAR NORMAL....................-10
TOTAL DEPARTURE FOR THE MONTH...................+21 [+3.0 DEGREES/DAY]
 
HEATING DEGREE DAYS 
TOTAL HEATING UNITS FOR YESTERDAY.............11   DEPARTURE..........+7
TOTAL HEATING UNITS FOR THE MONTH.............21   DEPARTURE.........-9
TOTAL HEATING UNITS FOR THE SEASON..........5755   DEPARTURE........-578
TOTAL HEATING UNITS LAST SEASON TO DATE.....4953   DIFFERENCE.......+802
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...............33 NE  AT  8:12 P.M.
                   AERO....................32 NE  AT  8:12 P.M.
                   ASOS....................35 NNE AT  8:13 P.M.
                   DAVIS...................31 ENE AT  8:12 P.M. RMY: 34
FASTEST MILE FOR YESTERDAY.................24 E   AT  8:12 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE..............24 NE  AT  8:14 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE.............23 NE  AT  8:14 P.M.
AVERAGE WIND SPEED AND DIRECTION..........13.1 E
                   ASOS...................13.1
                   DAVIS..................11.4 ENE [76 deg]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....4.09  DEPARTURE...........+3.92
                         ASOS..............3.91
TOTAL PRECIPITATION FOR THE MONTH..........4.77  DEPARTURE...........+3.61
                         ASOS..............4.54
TOTAL PRECIPITATION FOR THE YEAR...........24.86 DEPARTURE...........+1.04
                         ASOS..............N/A*
*ASOS malfunctioned during storm on 2/8-9, leading to erroneous totals
                       
PRELIMINARY CLIMATE SUMMARY FOR JUNE 2013 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane wind recording system gust
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  90/69/80/+18/0.00/.../..        30 SW  AERO 32 MPH SW  RMY 33
6/2  86/64/75/+13/T/.../..           42 SSW AERO 44 MPH SSW RMY 46
6/3  75/57/66/+4/0.47/.../..         22 WNW AERO 22 MPH SSW RMY 22
6/4  70/48/59/-4/0.00/.../..         25 W   AERO 25 MPH W   RMY 25
6/5  73/51/62/-1/0.00/.../..         20 SSW AERO 21 MPH S   RMY 22
6/6  74/54/64/+1/..../.../..         22 SSE AERO 22 MPH S   RMY 22
6/7  57/51/54/-10/..../.../..        33 NE  AERO 32 MPH NE  RMY 34
 
6/8 morning low temp: 52F; the normal low is now 55F
 
DAILY RECORDS FOR JUNE 2013
6/1 - TIED DAILY RECORD MAXIMUM TEMPERATURE OF 90F;
     previous record of 90F set in 1937
6/1 - NEW DAILY RECORD HIGH MINIMUM TEMPERATURE OF 69F;
     surpasses previous record of 68F set in 1944, 1987
 
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: Forrest Iwanik