BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, MARCH 26, 2017 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
TEMPERATURES REACH 40 BEFORE COLD EAST WINDS COOL THINGS DOWN
 
Blue Hill had a total of 0.06 in. of precip. from 7:00 A.M. EST yesterday
to 7:00 A.M. today. More rain is expected to fall later today and in the
next few days.
 
Skies were mostly clear to begin the day with cirrostratus clouds. There
was distant haze in the area all day which made the visibility between 50 and
60 miles.  Temperatures rose from just below freezing up to 40 degrees before
cold east winds brought them back into the 30s. Relative humidity dropped
into the 50% range by early morning.  Winds were light but shifted from north
northwesterly to east throughout the morning. 
 
 
Today's Observations:
 
7 A.M.
Weather: Scattered Cirrostratus, Few Altostratus S-WNW
Temperature: 33F; Dew Point: 24F; Wind: N at 10 kts
Sea-level pressure: 30.51 ins. Hg, rising steadily
Visibility: 50 miles, distant haze in all directions
6-hr Max temp: 33F
6-hr Min temp: 29F
24-hr precip: 0.06 in.
24-hr snowfall: 0.0 in.
BHO SA 1155 250 SCT 50 331/33/24/0410/051/ FEW AS DSNT S-WNW 
LGT DSNT HZ/ 8/018/ 4/001 MANUAL 70006 ASOS 70006 52017 10033 20029
 
10 A.M.
Weather: Broken Cirrostratus,  Scattered Altostratus
Temperature: 39F; Dew Point: 25F; Wind: N at 9 kts
Sea-level pressure: 30.53 ins. Hg, rising, then more quickly
Visibility: 60 miles, distant haze in all
BHO SA 1455 E250 BKN 70 SCT 60 339/39/25/0809/053/ LGT DSNT HZ/ 8/018/ 
51008 
 
1 P.M.
Weather: Overcast Altostratus, Few Cumulus
Temperature: 37F; Dew Point: 23F; Wind: N at 12 kts
Sea-level pressure: 30.51 ins. Hg, falling, then faster,
Visibility: 35 miles, distant haze all directions
6-hr Max temp: 40F
6-hr Min temp: 33F
BHO SA 1755 E85 OVC 35 331/37/23/0812/051/ FEW CU ALQDS DSNT HZ/ 8/11/ 
58008 10040 20033
 
 
SUMMARY FOR SATURDAY, MARCH 25, 2017

TEMPERATURE (DEGREES F)
MAX.....44   NORMAL.....47
MIN.....31   NORMAL.....30
MEAN....38   NORMAL.....38
 
DEPARTURE FROM 30-YEAR NORMAL.........................0
TOTAL DEPARTURE FOR THE MONTH........................-97 [-3.7 DEGREES/DAY]
 
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............27   DEPARTURE..........0
TOTAL HEATING UNITS FOR THE MONTH.............861   DEPARTURE.........+98
TOTAL HEATING UNITS FOR THE SEASON...........4738   DEPARTURE........-593
TOTAL HEATING UNITS LAST SEASON TO DATE......4284   DIFFERENCE.......+454
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...................22 NE  AT  9:06 A.M.
                   AERO........................20 NE  AT  9:07 A.M.
                   ASOS........................22 NE  AT  9:07 A.M.
                   DAVIS.......................20 W   AT 12:50 A.M. RMY 21
FASTEST MILE FOR YESTERDAY.....................14 NE  AT  9:07 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE..................16 ENE AT  9:52 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE.................14 W   AT 12:18 A.M.
AVERAGE WIND SPEED AND DIRECTION..............8.0 NNW
                   ASOS.......................8.6
                   DAVIS......................7.0 N [5 deg.]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.06  DEPARTURE......-0.13
                         ASOS..............0.06
TOTAL PRECIPITATION FOR THE MONTH..........2.61  DEPARTURE......-1.88
                         ASOS..............2.84
TOTAL PRECIPITATION FOR THE YEAR..........11.89  DEPARTURE......-1.02
                         ASOS...............N/A ***
*** ASOS annual total not available due to erroneous readings
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.......-0.3
TOTAL SNOWFALL FOR THE MONTH...............10.3  DEPARTURE.......-0.7
TOTAL SNOWFALL FOR THE SEASON..............62.6  DEPARTURE.......+4.6
 
 
PRELIMINARY CLIMATE SUMMARY FOR MARCH CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/PEAK GUST/AERO/RMY GUST
AERO: Aerovane wind recording system gust
RMY:  R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized
M:    Missing data
 
3/1  61/46/54/+23/0.01/0.0/000/00          41 S   AERO 45 S   RMY 45
3/2  55/26/41/+10/T/T/509/75               58 W   AERO 61 W   RMY 59
3/3  36/19/28/-4/T/T/592/87                38 W   AERO 44 W   RMY N/A
3/4  20/7/14/-18/T/T/622/91                45 NW  AERO 48 NW  RMY 51
3/5  29/5/17/-15/0.00/0.0/687/100          35 WNW AERO 43 WNW*RMY N/A
3/6  40/11/26/-6/0.00/0.0/641/93           18 WNW AERO 17 NW* RMY N/A
3/7  47/29/38/+5/0.01/0.0/000/00           32 S   AERO 35 S   RMY 36
3/8  55/43/49/+16/0.05/0.0/.../..          35 W   AERO 36 W   RMY 37
3/9  49/35/42/+9/0.0/0.0/.../..            53 W   AERO 59 W   RMY 58
3/10 35/20/28/-5/0.27/2.9/.../..           35 WNW AERO 44 WNW RMY 40
3/11 20/7/14/-20/0.02/0.2/.../..           43 W   AERO 47 W   RMY 50
3/12 25/4/15/-19/0.00/0.0/.../..           32 W   AERO 40 WNW RMY N/A
3/13 33/8/21/-13/0.00/0.0/.../..           25 WNW AERO 29 WNW RMY N/A
3/14 38/23/31/-4/2.15/7.3/.../..           60 NE  AERO 62 NE  RMY 62
3/15 27/15/21/-14/0.00/0.0/.../..          36 W   AERO 37 W   RMY N/A
3/16 33/17/25/-10/0.00/0.0/.../..          36 W   AERO 37 W   RMY 38
3/17 40/22/31/-5/0.00/0.0/.../..           25 WNW AERO 24 WNW RMY 27
3/18 36/24/30/-6/0.00/0.0/.../..           26 ENE AERO 24 ENE RMY 26
3/19 35/28/32/-4/0.01/T/.../..             39 N   AERO 37 N   RMY 39
3/20 49/29/39/+2/0.00/0.0/.../..           31 N   AERO 35 N   RMY 36
3/21 52/34/43/+6/0.00/0.0/.../..           28 W   AERO 26 W   RMY N/A
3/22 38/15/27/-10/T/T/.../..               46 NW  AERO 50 NW  RMY 51
3/23 36/13/25/-13/0.00/0.0/..              36 WNW AERO 35 WNW RMY 38
3/24 44/25/35/-3/.../.../..                37 S   AERO 38 S   RMY 39
3/25 44/31/38/0/....../......              22 NE  AERO 20 NE  RMY 21
 
3/26 Low temp since midnight is 29F; normal low is now 30F
 
 
DAILY RECORDS FOR MARCH 2017
 
3/11/17: DAILY RECORD LOW MAXIMUM TEMPERATURE OF 20F,
         TIES PREVIOUS RECORD SET IN 1885
 
3/14/17: DAILY RECORD MAXIMUM SNOWFALL OF 7.3 INS,
         BREAKS PREVIOUS RECORD OF 6.7 INS SET IN 1958
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR MARCH 26
HIGH 76 IN 1922, 1949
LOW 6 IN 1960
PRECIP 1.99 INS. IN 1988
SNOWFALL 5.4 INS. IN 2001
PEAK GUST 63 MPH S IN 1970
 
RECORDS FOR MARCH 27
HIGH 78 IN 1998
LOW 12 IN 1975
PRECIP 1.05 INS. IN 1913
SNOWFALL 6.6 INS. IN 1959
PEAK GUST 62 MPH NW IN 1965, SE IN 1992
 
TODAY'S REPORT PREPARED BY: Robert Millette