BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, FEBRUARY 15, 2012
ALL TIMES ARE IN EASTERN STANDARD TIME
 
CALM TO NEAR CALM WINDS FOR SIX HOURS TODAY
LIGHT SHOWER BEFORE DAWN LEAVES TRACE OF RAIN
TEMPERATURES AVERAGING WELL ABOVE NORMAL AGAIN 
 
The peak wind gust for the day through 1 P.M. was  
21 MPH SSW just after 2 A.M. Shortly before 7 A.M.
our wind went to calm and continued near calm for
six hours with a six hourly average from 7 A.M. to
1 P.M. of only 2 MPH and a peak gust of 7 MPH.
Temperatures are rising into the 40's after starting
out with a low of 36F. This was a total of 17
degrees above the normal minimum.
 
Today's observations:
 
7 A.M. 
Weather: Broken stratus, overcast nimbostratus 
Temperature: 37F, Dew point: 34F, Wind: Calm
Sea-level pressure: 30.13 inches Hg, rising 
Visibility: 12 miles, thin fog
6-hour min. temp: 36F
6-hour precip: trace
24-hour precip: trace 
BHO SA 1155 E22 BKN 55 OVC 12 204/37/34/0000/013/
THN F ALQDS/ 8/62/ 53007 MANUAL 6000/ 10039 20036
 
10 A.M.
Weather: Overcast stratus  
Temperature: 38F, Dew Point: 35F;  Wind: SSW at 1 KT (estimated) 
Sea-level pressure: 30.16 inches Hg, rising then steady
Visibility: 10 miles, thin fog 
BHO SA 1455 E17 OVC 10 213/38/35/E2001/016/ THN F ALQDS/
8/6// 51009
 
1 P.M. 
Weather: Broken cumulus/moderate cumulus, dark bases,
overcast stratocumulus, bright spots in the overcast,
sun occasionally visible
Temperature: 42F, Dew Point: 37F; Wind: S at 2 KTS, (estimated)
Wind: Light and variable
Sea-level pressure: 30.15 inches Hg, falling 
Visibility: 12 miles, thin fog and hazy all quadrants k
6-hour max. temp: 43F
BHO SA 1755 E20 BKN 38 OVC 12 210/42/37/E1802/015/ MDT CU
DRK BASES BRGHT SPTS IOVC SUN OCNL DMLY VSB THN F/HAZY ALQDS
WND L/V/ 8/8// 58003 10043 20037
 
WEATHER SUMMARY FOR TUESDAY, FEBRUARY 14
 
TEMPERATURE (DEGREES F)
MAX.....43    NORMAL.....37
MIN.....29    NORMAL.....19
MEAN....36    NORMAL.....28
 
DEPARTURE FROM 30-YEAR NORMAL......................+8
TOTAL DEPARTURE FOR THE MONTH.....................+85 [+5.9 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY..............29   DEPARTURE..........-8
TOTAL HEATING UNITS FOR THE MONTH.............451   DEPARTURE.........-85
TOTAL HEATING UNITS FOR THE SEASON...........3232   DEPARTURE........-840
TOTAL HEATING UNITS LAST SEASON TO DATE......4033   DIFFERENCE.......-801
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............23 SSW AT  1:05 P.M.  
                   AERO..................24 SSW AT  1:05 P.M. 
                   ASOS..................23 SSW AT  1:05 P.M. 
                   DAVIS.................22 S   AT  1:01 P.M. RMY 23 MPH
THE FASTEST MILE FOR YESTERDAY...........18 SSW AT  1:00 P.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE............18 SSW AT  1:06 P.M. 
MAXIMUM 2-MINUTE DAVIS AVERAGE...........18 SSW AT  1:06 P.M. 
AVERAGE WIND SPEED AND DIRECTION.......10.1 S
                   ASOS................10.0
                   DAVIS................9.3  WSW (250 deg)
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE..........-0.14
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........0.15  DEPARTURE..........-1.77
                         ASOS..............0.14
TOTAL PRECIPITATION FOR THE YEAR...........3.34  DEPARTURE..........-2.93
                        ASOS...............3.38
     
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE..........-0.6
TOTAL SNOWFALL FOR THE MONTH................0.6  DEPARTURE..........-8.3
TOTAL SNOWFALL FOR THE SEASON..............17.1  DEPARTURE.........-21.2
 
PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 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
 
2/1  58/31/45/+19/T/0.0/174/29      39 WNW AERO 40 MPH WNW RMY 41
2/2  40/28/34/+8/T/0.0/000/00       25 WNW AERO 25 MPH WNW RMY N/A
2/3  37/22/30/+4/0.00/0.0/574/95    28 NW  AERO 28 MPH NW  RMY 29
2/4  43/24/34/+8/0.00/0.0/498/82    28 WNW AERO 31 MPH WNW RMY 30
2/5  34/18/26/0/0.00/0.0/597/98     18 W   AERO 17 MPH W   RMY N/A
2/6  49/24/37/+11/0.00/0.0/599/98   33 WSW AERO 32 MPH WSW RMY 34
2/7  43/27/35/+8/0.00/0.0/596/97    24 NNW AERO 28 MPH NNW RMY 24
2/8  37/17/27/0/0.00/0.0/388/63     22 N   AERO 21 MPH N   RMY 24
2/9  45/26/36/+9/0.00/0.0/607/98    21 NW  AERO 21 MPH W   RMY 21
2/10 49/30/40/+13/.../0.0/467/75    32 SSW AERO 35 MPH SSW RMY 34
2/11 36/27/32/+5/.../0.6/012/02     33 NW  AERO 33 MPH NW  RMY N/A
2/12 28/13/21/-6/0.00/0.0/621/99    46 WNW AERO 48 MPH WNW RMY 50
2/13 40/12/26/-2/0.00/0.0/535/85    43 W   AERO 42 MPH W   RMY 44 
2/14 43/29/36/+8/0.00/0.0/082/13    23 SSW AERO 24 MPH SSW RMY 23
 
2/15 morning low temp: 36F; the normal low is now 19F
 
DAILY RECORDS FOR FEBRUARY 2012
None so far.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR FEBRUARY 15
HIGH 60F IN 1954
LOW -18F IN 1943
PRECIP 1.28 INCHES IN 1950
SNOWFALL 11.2 INCHES IN 1940
PEAK GUST 94e MPH WNW IN 1946
 
RECORDS FOR FEBRUARY 16
HIGH 62F IN 1954
LOW -16F IN 1943
PRECIP 1.91 INCHES IN 1958
SNOWFALL 18.6 INCHES IN 1958
PEAK GUST 78 MPH W IN 1967
 
TODAY'S REPORT PREPARED BY: Robert Skilling