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

DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, MARCH 25, 2017  
ALL TIMES ARE IN EASTERN STANDARD TIME


LIGHT MORNING RAIN AND OVERCAST SKIES

Blue Hill had a total of 0.03 in. of precip. from 7:00 A.M. EST yesterday 
to 7:00 A.M. today. There was very light rain occurring off and on through 
this morning and early afternoon leaving us with just a trace of precip. 
so far today. More rain is expected to fall later today and in the next few 
days. Blue Hill Observatory is currently 0.89 in. below normal for precip. 
for 2017.

Skies were overcast all day with mostly stratus clouds. There was distant 
fog in the area all day which made the visibility stay lower. Temperatures 
did not rise. At midnight, the temperature was 44F. This morning at 7:00 A.M., 
the temperature was at 39F and by 1:00 P.M., it fell to 36F. Relative humidity 
stayed high around 80-100%. Winds were lighter than they have been for the past 
few days. The peak gust so far was 22 MPH out of the NE at 9:06 A.M. EST.


Today's Observations:

7 A.M.
Weather: Light drizzle, broken stratus, overcast altostratus
Temperature: 39F; Dew Point: 37F; Wind: N at 9 kts
Sea-level pressure: 30.16 ins. Hg, rising, then more quickly
Visibility: 20 miles, distant fog in all directions
6-hr Max temp: 43F
6-hr Min temp: 39F
24-hr precip: 0.03 in.
24-hr snowfall: 0.0 in.
BHO SA 1155 E20 BKN 100 OVC 20L- 215/39/37/0009/016/ DSNT FG ALQDS/ 8/62/ 
4/001 53026 MANUAL 70003 ASOS 70005 10043 20039

10 A.M.
Weather: Scattered stratocumulus, overcast stratus
Temperature: 39F; Dew Point: 25F; Wind: NE at 11G18 kts
Sea-level pressure: 30.25 ins. Hg, rising, then more quickly 
Visibility: 25 miles, except for 15 miles NW-NE, distant fog in all 
directions
3-hr precip: Trace
3-hr snowfall: 0.0 in.
BHO SA 1455 32 SCT E42 OVC 25 244/39/35/0511G18/025/ VSBY NW-NE 15 DSNT FG 
ALQDS/ 8/6// 51029 MANUAL 600//

1 P.M.
Weather: Light drizzle, overcast stratus
Temperature: 36F; Dew Point: 33F; Wind: NNE at 0209G14 kts
Sea-level pressure: 30.29 ins. Hg, rising, then more quickly
Visibility: 5 miles, distant fog all directions 
6-hr Max temp: 39F
6-hr Min temp: 36F
6-hr precip: Trace
6-hr snowfall: 0.0 in.
BHO SA 1755 E10 OVC 5L- 257/36/33/0209G14/029/ DSNT FG ALQDS/ 8/6// 53013 
MANUAL 600// 10039 20036


SUMMARY FOR FRIDAY, MARCH 24, 2017
 
TEMPERATURE (DEGREES F)
MAX.....44   NORMAL.....47
MIN.....25   NORMAL.....30
MEAN....35   NORMAL.....38

DEPARTURE FROM 30-YEAR NORMAL.........................-3
TOTAL DEPARTURE FOR THE MONTH........................-97 [-3.7 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............30   DEPARTURE..........+3
TOTAL HEATING UNITS FOR THE MONTH.............834   DEPARTURE.........+98
TOTAL HEATING UNITS FOR THE SEASON...........4711   DEPARTURE........-593
TOTAL HEATING UNITS LAST SEASON TO DATE......4265   DIFFERENCE.......+447

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY...................37 S   AT 12:14 P.M.
                   AERO........................38 S   AT 12:15 P.M.
                   ASOS........................38 S   AT 12:15 P.M.
                   DAVIS.......................42 SW  AT 12:15 P.M. RMY 39
FASTEST MILE FOR YESTERDAY.....................31 S   AT 12:19 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE..................29 SSW AT 12:20 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE.................29 SW  AT 12:20 P.M.
AVERAGE WIND SPEED AND DIRECTION.............14.5 SSW
                   ASOS......................14.6
                   DAVIS.....................13.0 SW [230 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.03  DEPARTURE......-0.17
                         ASOS..............0.05
TOTAL PRECIPITATION FOR THE MONTH..........2.55  DEPARTURE......-1.75
                         ASOS..............2.78
TOTAL PRECIPITATION FOR THE YEAR..........11.83  DEPARTURE......-0.89
                         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.......-0.4
TOTAL SNOWFALL FOR THE SEASON..............62.6  DEPARTURE.......+4.9


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 Low temp since midnight is 39F; 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 25
HIGH 76 IN 1910
LOW 8 IN 1888, 1956
PRECIP 1.84 INS. IN 1909
SNOWFALL 1.0 INS. IN 1912
PEAK GUST 69 MPH SE IN 1969

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

TODAY'S REPORT PREPARED BY: Lizzy Suzedell