BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, MARCH 15, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
 
LIGHT RAIN THIS MORNING BUT CLEARING AND MILD THIS AFTERNOON
 
A period of light rain occurred early this morning on the summit, with most
of the precipitation falling between 6:00 and 7:00 this morning.  Only
0.01 inches of rain were measured.  By 8:00, the sky was beginning to
clear, and sunshine was observed soon after.  The temperature has risen
steadily all day today, even during the hours after midnight, with our
morning low of 35F occurring right at midnight.  Helped by the increasing
sunshine, the temperature was up to 54F by the 1:00 observation this
afternoon, making for a pleasant day.  It has been a breezy day, with the
wind averaging over 15mph from the S-SW so far, with gusts up to 32mph. 
 
Nearing its midway point, March continues to run cooler than normal by over
four degrees.  Precipitation has been well below average, with our monthly
deficit climbing closer to two inches despite some precipitation earlier
this week.
 
Today's Observations:
 
7 A.M.
Weather: Light rain, overcast nimbostratus
Temperature: 38F; Dew Point: 35F; Wind: S at 16 kts
Sea-level pressure: 29.76 ins. Hg, rising then falling
Visibility: 20 miles
6-hr max temp: 39F
6-hr min temp: 37F
24-hr. precip: 0.01 inches
Snow depth: 2 inches 
BHO SA 1155 E45 OVC 20R- 078/38/35/1916/976/ 8/020 4/002 58010
MANUAL 70001 ASOS 70002 10039 20037
 
10 A.M. 
Weather: Broken altocumulus, higher altocumulus distant NE-E and distant
SW-NW
Temperature: 47F Dew Point: 33F; Wind: SW at 13G20 kts
Sea-level pressure: 29.73 ins. Hg, falling then falling more slowly
Visibility: 45 miles, distant haze
3-hr precip: Trace
BHO SA 1455 E90 BKN 45 067/47/33/2213G20/973/ HIER AC DSNT NE-E AND
DSNT SW-NW DSNT HZ/ 8/030 56011 MANUAL 6000/  
 
1 P.M.
Weather: Scattered cumulus, altocumulus distant NE-SE
Temperature: 53F; Dew Point: 33F; Wind: WSW at 15G24 kts,
Wind: Direction variable SSW-WNW
Sea-level pressure: 29.69 ins. Hg, falling then falling more rapidly
Visibility: 45 miles, distant haze
6-hr max temp: 54F
6-hr min temp: 38F
6-hr precip: Trace
BHO SA 1755 50 SCT 45 055/53/33/2515G24/969/ AC DSNT NE-SE DSNT HZ
WND21v29/ 8/130 58012 MANUAL 6000/ 10054 20038
 
WEATHER SUMMARY FOR FRIDAY, MARCH 14, 2014
 
TEMPERATURE (DEGREES F)
MAX.....37    NORMAL.....44
MIN.....10    NORMAL.....26
MEAN....24    NORMAL.....35
 
DEPARTURE FROM 30-YEAR NORMAL........................-11
TOTAL DEPARTURE FOR THE MONTH........................-57 [-4.3 DEGREES/DAY]
 
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............41  DEPARTURE.........+11
TOTAL HEATING UNITS FOR THE MONTH.............508  DEPARTURE.........+57     
TOTAL HEATING UNITS FOR THE SEASON...........5099  DEPARTURE.........+80 
TOTAL HEATING UNITS LAST SEASON TO DATE......4527  DIFFERENCE.......+572
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..................39 SSW  AT   8:51 P.M.              
                   AERO.......................41 SSW  AT   8:51 P.M.                          
                   ASOS.......................42 S    AT   8:51 P.M.                   
                   DAVIS......................40 S    AT   8:51 P.M. RMY 42                   
FASTEST MILE FOR YESTERDAY....................29 SSW  AT   8:51 P.M.                    
MAXIMUM 2-MINUTE ASOS AVERAGE.................30 SSW  AT   7:28 P.M.     
MAXIMUM 2-MINUTE DAVIS AVERAGE................29 SSW  AT   9:29 P.M.                    
AVERAGE WIND SPEED AND DIRECTION............16.4 SSW           
                   ASOS.....................16.0     
                   DAVIS....................14.7 SW [227 deg.]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.01  DEPARTURE.............-0.16
                         ASOS..............0.02
TOTAL PRECIPITATION FOR THE MONTH..........0.70  DEPARTURE.............-1.71    
                         ASOS..............0.70
TOTAL PRECIPITATION FOR THE YEAR..........10.79  DEPARTURE.............-0.04 
                         ASOS.............11.24
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M........  0.0  DEPARTURE..............-0.4
TOTAL SNOWFALL FOR THE MONTH................2.5  DEPARTURE..............-4.4
TOTAL SNOWFALL FOR THE SEASON..............84.3  DEPARTURE.............+30.4 
 
PRELIMINARY CLIMATE SUMMARY FOR MARCH 2014 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
RMY:  RMY = R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized
 
3/1  34/12/23/-8/0.00/0.0/458/68          28 SSW AERO 29 MPH SSW RMY 30
3/2  37/28/33/2/T/T/014/02                22 SW  AERO 22 MPH SW  RMY 29
3/3  28/11/20/-12/0.00/0.0/000/00         29 NNW AERO 30 MPH NNW RMY N/A
3/4  29/6/18/-14/0.00/0.0/444/65          17 SW  AERO 16 MPH SW  RMY 17
3/5  27/16/22/-10/0.02/0.3/000/00         21 NE  AERO 20 MPH N   RMY 23
3/6  26/7/17/-15/0.00/0.0/689/100         23 NNW AERO 23 MPH NNW RMY N/A 
3/7  35/16/26/-7/0.00/0.0/449/65          18 SE  AERO 17 MPH SE  RMY 18 
3/8  52/27/40/+7/0.00/0.0/673/97          26 NW  AERO 29 MPH NNW RMY 27
3/9  40/25/33/0/0.00/0.0/669/96           28 NW  AERO 29 MPH NW  RMY 29
3/10 42/26/34/+1/0.03/0.8/196/28          21 S   AERO 22 MPH S   RMY 27
3/11 56/34/45/+11/0.00/0.0/450/64         33 W   AERO 33 MPH W   RMY 34 
3/12 53/34/44/+10/..../.../.../..         29 NNW AERO 30 MPH NNW RMY 30
3/13 33/12/23/-11/..../.../.../..         43 NW  AERO 45 MPH NW  RMY 45
3/14 37/10/24/-11/0.00/0.0/.../..         39 SSW AERO 41 MPH SSW RMY 42
 
3/15 morning low temp: 35F; the normal low is now 26F
 
DAILY RECORDS FOR MARCH 2014
None so far.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR MARCH 15
HIGH 80 IN 1990
LOW 6 IN 1993
PRE 2.86 INS. IN 2010 
SNOW 12.0 INS. 1967
WIND 73e MPH ESE IN 1940
 
RECORDS FOR MARCH 16
HIGH 73 IN 1990
LOW 8 IN 1932
PRE 1.95 INS. IN 1900
SNOW 10.0 INS. IN 1896
WIND 79 MPH NE IN 1956
 
TODAY'S REPORT PREPARED BY: Jonathan O'Brien