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

DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, APRIL 2, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

MILD AND SEASONABLE FOLLOWING FREEZING 
OVERNIGHT TEMPERATURES.... 

Today we observed fair weather with cloud cover 
being only cirrus clouds. Wind has become more
significant since this morning, reaching an average
of 15 mph by the afternoon. The high so far today 
is 50F, the same as the daily normal maximum. The 
low since midnight is 27F, 6 degrees below the daily 
normal of 33F.   

March finished with a liquid precipitation total of 
4.08, 1.50 inches below normal. Snowfall for March
was 23.1 inches, 10.4 inches above normal.  


Today's Observations:

7 A.M.
Weather: Scattered cirrus
Temperature: 31F; Dew Point: 15F; Wind: S at 4 kts,
Wind: Light and variable
Sea-level pressure: 30.47 ins. Hg, rising steadily
Visibility: 85 miles
6-hr Max temp: 31F
6-hr Min temp: 27F
24-hr Precip:  0.00 ins.
24-hr snowfall: 0.0 ins.
Snow depth: 0 ins. 
BHO SA 1155 300 SCT 85 317/31/15/1804/047/ K LYR ALG 
HRZN NNW-S WND L/V/ 8/001 53021 10031 20027  

10 A.M.
Weather: Broken cirrus
Temperature: 44F; Dew Point: 14F; Wind: S at 7 kts  
Sea-level pressure: 30.45 ins. Hg, falling steadily
Visibility: 80 miles
3-hr Precip: 0.00 ins. 
BHO SA 1455 E250 BKN 80 312/44/14/1807/045/ 8/002 58005  

1 P.M.
Weather: Broken cirrus
Temperature: 47F; Dew Point: 19F; Wind: S at 14G20 kts     
Sea-level pressure: 30.39 ins. Hg, rising steadily 
Visibility: 85 miles
6-hr Max temp: 50F
6-hr Min temp: 31F
6-hr Precip: 0.00 ins.
6-hr snowfall: 0.0 ins. 
BHO SA 1755 E250 BKN 85 290/47/19/1814G20/039/ 8/002 57022 
10050 20031

SUMMARY FOR MONDAY, APRIL 1, 2019 

TEMPERATURE (DEGREES F)
MAX.....45   NORMAL.....50
MIN.....29   NORMAL.....32
MEAN....37   NORMAL.....41

DEPARTURE FROM 30-YEAR NORMAL.........................-4
TOTAL DEPARTURE FOR THE MONTH.........................-4 [-4.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............28   DEPARTURE.........+4
TOTAL HEATING UNITS FOR THE MONTH..............28   DEPARTURE.........+4
TOTAL HEATING UNITS FOR THE SEASON...........5433   DEPARTURE........-75
TOTAL HEATING UNITS LAST SEASON TO DATE......5077   DIFFERENCE......+356

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY....................40 WNW AT 10:48 A.M.
                   AERO.........................37 W   AT  1:43 P.M.
                   ASOS.........................42 WNW AT 10:47 A.M. 
                   DAVIS........................43 W   AT 10:47 A.M.  RMY 42
FASTEST MILE FOR YESTERDAY......................34 WNW AT 10:49 A.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE...................30 WNW AT 10:49 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE..................34 W   AT 10:48 A.M.
AVERAGE WIND SPEED AND DIRECTION.............16.4 WNW
                   ASOS......................15.3
                   DAVIS.....................16.5 W [166 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE.......-0.17
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........0.00  DEPARTURE.......-0.17
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE YEAR..........13.04  DEPARTURE.......-1.13
                         ASOS.............13.05

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE........-0.2
TOTAL SNOWFALL FOR THE MONTH................0.0  DEPARTURE........-0.2
TOTAL SNOWFALL FOR THE SEASON..............47.6  DEPARTURE.......-12.3


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 38/17/28/-3/..../.../462/71           16 NNW AERO 13 NNW RMY 22
03/02 31/27/29/-2/..../.../000/00           29 NNE AERO 22 NNE RMY 30
03/03 40/25/33/+1/..../.../354/54           21 ESE AERO 14 ESE RMY N/A
03/04 35/18/27/-5/..../.../126/19           33 W   AERO 18 W   RMY 32
03/05 29/10/20/-12/0.00/0.0/642/97          28 WNW AERO 12 SW  RMY N/A
03/06 24/10/17/-15/0.00/0.0/648/97          40 WNW AERO 25 WNW RMY 41
03/07 26/6/16/-17/0.00/0.0/348/52           35 W   AERO 18 W   RMY 34
03/08 35/11/23/-10/0.00/0.0/540/80          23 WSW AERO M  M   RMY M 
03/09 43/22/33/0/0.00/0.0/660/98            20 WSW AERO M  M   RMY N/A
03/10 40/26/33/0/..../.../000/00            32 ESE AERO 23 S   RMY 32
03/11 48/33/41/+7/..../.../534/79           40 NW  AERO 37 NNW RMY 41
03/12 41/27/34/0/..../.../480/70            32 N   AERO 33 N   RMY 34
03/13 43/24/34/0/..../.../390/57            18 W   AERO 21 W   RMY 23
03/14 48/32/40/0/..../.../114/17            25 S   AERO 28 S   RMY M
03/15 58/40/49/+14/0.12/0.0/000/00          37 SSW AERO 38 SSW RMY 39
03/16 50/31/41/+6/0.00/0.0/672/97           45 W   AERO 46 W   RMY 48
03/17 40/26/33/-3/0.00/0.0/570/82           40 WNW AERO M  M   RMY N/A
03/18 41/22/32/-4/0.00/0.0/702/100          29 W   AERO M  M   RMY 30
03/19 44/25/35/-1/0.00/0.0/570/81           25 W   AERO M  M   RMY N/A
03/20 50/27/39/+2/0.00/0.0/.../..           26 S   AERO M  M   RMY 29
03/21 50/33/42/+5/..../.../.../..           25 SSE AERO M  M   RMY 46
03/22 39/34/37/0/..../.../.../..            40 W   AERO M  M   RMY 44
03/23 45/28/37/-1/0.00/0.0/.../..           45 WNW AERO M  M   RMY 50
03/24 56/29/43/+5/0.00/0.0/.../..           28 W   AERO M  M   RMY 30
03/25 49/32/41/+3/0.00/0.0/.../..           25 NNW AERO M  M   RMY N/A
03/26 43/27/35/-4/0.00/0.0/.../..           28 NW  AERO M  M   RMY 28
03/27 42/24/33/-6/0.00/0.0/.../..           21 S   AERO M  M   RMY 23
03/28 51/28/40/+1/0.00/0.0/.../..           35 S   AERO M  M   RMY 37
03/29 53/40/47/+7/0.02/0.0/.../..           26 SSW AERO M  M   RMY 27
03/30 67/40/54/+14/0.00/0.0/.../..          44 S   AERO M  M   RMY 46
03/31 65/34/50/+9/0.10/0.0/.../..           53 S   AERO 52 S   RMY 55

PRELIMINARY CLIMATE SUMMARY FOR APRIL 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

04/01 45/29/37/-4/0.00/0.0//.../..          40 WNW AERO 37 W   RMY 42

04/02 Low temp since midnight is 27F; normal low is 33F


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

RECORDS FOR APRIL 2
HIGH 77 IN 1967
LOW 14 IN 1919
PRECIP 1.83 IN. IN 1970
SNOWFALL 13.0 IN. IN 1887
PEAK GUST 76 MPH SSW IN 1970

RECORDS FOR APRIL 3
HIGH 76 IN 1892
LOW 16 IN 1894
PRECIP 2.18 IN. IN 1990
SNOWFALL 8.0 IN. IN 1915
PEAK GUST 83e MPH NW IN 1977 [RECORD FOR MONTH]

TODAY'S REPORT PREPARED BY: Benjamin Turner