BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, MARCH 28, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME

OVERCAST, YET MILD WITH GOOD VISIBILITY ATOP
GREAT BLUE HILL....

Partly cloudy skies this morning led to an overcast afternoon.
Visibility was good at 70 miles all day. Wind was light and
northeasterly during the morning hours, shifting to the
southwest in the afternoon. The low so far today is 36F, 
which is 10 degrees above the normal low of 31F. The high so 
far today is 56F, which is 8 degrees above the normal max 
of 48F. 


Today's Observations:

7 A.M.
Weather: Scattered altocumulus, broken cirrostratus
Temperature: 40F; Dew Point: 18F; Relative Humidity: 40%
Wind: NNE at 5 kts
Sea-level pressure: 30.18 ins. Hg: rising steadily
Visibility: 70 miles
6-hr Max temp: 42F
6-hr Min temp: 36F
24-hr Precip:  0.00 ins.
24-hr Snowfall: 0.0 ins.
BHO SA 1155 150 SCT E250 BKN 70 220/40/18/0205/018/ WND 
LGT/ 8/078 53021 10042 20036

10 A.M.
Weather: Scattered altocumulus, broken cirrostratus
Temperature: 51F; Dew Point: 18F; Relative Humidity: 27%
Wind: S at 7 kts
Sea-level pressure: 30.20 ins. Hg: rising, then rising more slowly
Visibility: 70 miles
3-hr Precip:  0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 150 SCT E250 BKN 70 227/51/18/1707/020/ 8/078 53007 

1 P.M.
Weather: Scattered altocumulus, broken cirrostratus
Temperature: 54F; Dew Point: 19F; Relative Humidity: 24%
Wind: S at 7 kts 
Sea-level pressure: 30.18 ins. Hg: falling, then falling more slowly
Visibility: 70 miles
6-hr Max temp: 56F
6-hr Min temp: 40F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
BHO SA 1755 140 SCT E220 BKN 70 219/54/19/1807/018/ 8/078 58008 
10056 20040


SUMMARY FOR FRIDAY, MARCH 27, 2020 

TEMPERATURE (DEGREES F)
MAX.....61   NORMAL.....48
MIN.....41   NORMAL.....30
MEAN....51   NORMAL.....39

DEPARTURE FROM 30-YEAR NORMAL...................+12
TOTAL DEPARTURE FOR THE MONTH..................+184 [+6.6 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY...............14  DEPARTURE.......-12
TOTAL HEATING UNITS FOR THE MONTH..............631  DEPARTURE......-184
TOTAL HEATING UNITS FOR THE SEASON............4771  DEPARTURE......-612
TOTAL HEATING UNITS LAST SEASON TO DATE.......5335  DEPARTURE......-564

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY....................32 NW  AT  8:34 A.M.  
                   AERO.........................MISSING   
                   ASOS.........................32 NW  AT  8:33 A.M. 
                   DAVIS........................34 WNW AT  8:32 A.M. RMY 33
FASTEST MILE FOR YESTERDAY......................23 NW  AT  1:07 P.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE...................22 NW  AT  1:07 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE..................24 WNW AT  8:33 A.M.
AVERAGE WIND SPEED AND DIRECTION..............12.4 NNW               
                   ASOS.......................11.9
                   DAVIS......................12.5 WNW [305 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE......-0.19
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........3.49  DEPARTURE......-1.38
                         ASOS..............3.63
TOTAL PRECIPITATION FOR THE YEAR...........8.15  DEPARTURE......-5.14
                         ASOS..............8.54

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.......-0.3
TOTAL SNOWFALL FOR THE MONTH................2.8  DEPARTURE.......-8.8
TOTAL SNOWFALL FOR THE SEASON..............27.6  DEPARTURE......-31.0


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

03/01  33/15/24/-7/0.00/0.0/.../..         28 WNW AERO 28 WNW RMY 27
03/02  52/24/38/+7/T/T/.../..              40 S   AERO 39 S   RMY 41
03/03  64/45/55/+23/..../0.0/.../..        30 S   AERO 30 S   RMY N/A
03/04  50/38/44/+12/..../0.0/.../..        56 W   AERO 56 W   RMY 58
03/05  51/32/42/+10/0.00/0.0/.../..        31 W   AERO 31 NW  RMY 32
03/06  47/30/39/+7/..../.../.../..         46 NE  AERO 45 NE  RMY 46
03/07  43/26/35/+2/..../.../.../..         42 N   AERO 43 N   RMY 44
03/08  53/26/40/+7/0.00/0.0/.../..         31 W   AERO 30 W   RMY 28
03/09  72/40/56/+23/0.00/0.0/.../..        32 SW  AERO 32 SW  RMY 31
03/10  68/49/59/+26/0.00/0.0/.../..        48 WSW AERO 46 WSW RMY 49
03/11  56/37/47/+13/0.00/0.0/.../..        31 WNW AERO M  M   RMY 21
03/12  46/31/39/+5/..../0.0/.../..         21 SE  AERO 18 SE  RMY N/A
03/13  59/38/49/+15/..../0.0/.../..        46 WNW AERO 44 WNW RMY 46
03/14  51/35/43/+8/0.00/0.0/.../..         37 W   AERO 36 W   RMY 35
03/15  47/28/38/+3/0.00/0.0/.../..         28 NW  AERO 28 NW  RMY N/A
03/16  36/22/29/-6/0.00/0.0/.../..         21 NE  AERO 21 ESE RMY 21
03/17  43/28/36/0/..../0.4/.../..          29 W   AERO 30 W   RMY 29
03/18  54/31/43/+7/..../0.0/.../..         26 S   AERO 26 S   RMY 26
03/19  43/37/40/+4/..../0.0/.../..         36 E   AERO 35 E   RMY 34
03/20  66/37/52/+15/..../0.0/.../..        48 W   AERO 48 W   RMY 46
03/21  55/29/42/+5/0.00/0.0/.../..         45 W   AERO 48 W   RMY N/A
03/22  36/23/30/-7/0.00/0.0/.../..         23 NE  AERO 24 NE  RMY 23
03/23  40/25/33/-5/..../1.6/.../..         38 NNE AERO 39 NNE RMY 38
03/24  48/33/41/+3/..../.../.../..         37 NNW AERO 37 NNW RMY N/A
03/25  41/35/38/0/0.03/0.0/.../..          28 ENE AERO 28 ENE RMY 27
03/26  51/30/41/+2/.../0.0/.../..          25 SSE AERO 26 SSW RMY N/A
03/27  61/41/51/+12/..../0.0/.../..        32 NW  AERO M  M   RMY 33

03/28 The low since midnight is 36F, daily normal minimum is 31F 

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):  

RECORDS FOR MARCH 28
HIGH 86 IN 1998
LOW 7 IN 1923
PRECIP 2.31 INS. IN 1932
SNOWFALL 3.0 INS. IN 1932
PEAK GUST 60e MPH NW IN 1944, 60 WSW IN 1991

RECORDS FOR MARCH 29
HIGH 85 IN 1945
LOW -2 IN 1923
PRECIP 2.78 INS. IN 1984
SNOWFALL 13.5 INS. IN 1984
PEAK GUST 95 MPH ENE IN 1984

TODAY'S REPORT PREPARED BY: Benjamin Turner