Monday, March 27, 2017
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, MARCH 27, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME
LIGHT DRIZZLE TURNS TO RAIN, OBSCURED IN FOG ALL DAY
Light drizzle began early this morning totaling 0.01 in.
at 7:00AM EST. It continued, turning to light rain shortly
after 10:00AM EST. Precip. measured 0.43 in. by 1:00PM EST.
Thick fog was present at the observatory all day and limited
visibility from 1/16 to 1/8 mile during the observations.
Temperatures have been slightly warmer than yesterday and
near normal values. They rose to 43F by 1:00PM EST after
an overnight low of 33F. Winds have been light today with
directions out of the east in the morning changing to out
of the northwest by early afternoon.
Today’s Observations:
7 A.M.
Weather: Obscurement with thick fog, light drizzle
Temperature: 36F; Dew Point: 36F; Wind: E at 9 kts
Sea-level pressure: 30.20 ins. Hg, falling, then more quickly
Visibility: 1/8 mile
6-hr Max temp: 36F
6-hr Min temp: 33F
24-hr precip: 0.01 in.
24-hr snowfall: 0.0 in.
BHO SA 1155 W2 X 1/8L-F 228/36/36/1009/020/ PCPN VRY LGT/
8//// 58026 MANUAL 70001 ASOS 70001 10036 20033
10 A.M.
Weather: Obscurement with thick fog, light drizzle
Temperature: 40F; Dew Point: 40F; Wind: SSE at 7 kts
Sea-level pressure: 30.13 ins. Hg, falling, then less quickly
Visibility: 1/16 miles
3-hr precip: 0.01 in.
3-hr snowfall: 0.0 in.
BHO SA 1455 W2 X 1/16L-F 204/40/40/1507/013/ PCPN VRY LGT/
8//// 56024 MANUAL 6001/ ASOS 60002
1 P.M.
Weather: Obscurement with thick fog, light rain
Temperature: 40F; Dew Point: 40F; Wind: NW at 5 kts,
Wind Speed: Light
Sea-level pressure: 30.06 ins. Hg, falling, then less quickly
Visibility: 1/8 mile
6-hr Max temp: 43F
6-hr Min temp: 36F
6-hr precip: 0.43 in.
6-hr snowfall: 0.0 in.
BHO SA 1755 W3 X 1/8R-F 179/40/40/3205/006/ WND LGT/
8//// 56025 MANUAL 6043/ ASOS 60043 10043 20036
SUMMARY FOR SUNDAY, MARCH 26, 2017
TEMPERATURE (DEGREES F)
MAX…..42 NORMAL…..48
MIN…..29 NORMAL…..30
MEAN….36 NORMAL…..39
DEPARTURE FROM 30-YEAR NORMAL…………………….-3
TOTAL DEPARTURE FOR THE MONTH…………………..-101 [-4.1 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..29 DEPARTURE……….+3
TOTAL HEATING UNITS FOR THE MONTH………….890 DEPARTURE……..+101
TOTAL HEATING UNITS FOR THE SEASON………..4767 DEPARTURE……..-590
TOTAL HEATING UNITS LAST SEASON TO DATE……4312 DIFFERENCE…….+455
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….25 ENE AT 8:17 A.M.
AERO……………………23 ENE AT 8:17 A.M.
ASOS……………………27 ENE AT 8:16 A.M.
DAVIS…………………..24 E AT 8:16 A.M. RMY 25
FASTEST MILE FOR YESTERDAY…………………16 E AT 8:25 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………17 ENE AT 11:16 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..16 E AT 8:26 A.M.
AVERAGE WIND SPEED AND DIRECTION………….10.7 E
ASOS………………….10.7
DAVIS………………….9.1 E [090 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.01 DEPARTURE……-0.18
ASOS…………..0.01
TOTAL PRECIPITATION FOR THE MONTH……….2.62 DEPARTURE……-2.06
ASOS…………..2.85
TOTAL PRECIPITATION FOR THE YEAR……….11.90 DEPARTURE……-1.20
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…….-1.0
TOTAL SNOWFALL FOR THE SEASON…………..62.6 DEPARTURE…….+4.3
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
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/+16/0.05/0.0/320/46 35 W AERO 36 W RMY 37
3/9 49/35/42/+9/0.0/0.0/684/98 53 W AERO 59 W RMY 58
3/10 35/20/28/-5/0.27/2.9/000/00 35 WNW AERO 44 WNW RMY 40
3/11 20/7/14/-20/0.02/0.2/612/87 43 W AERO 47 W RMY 50
3/12 25/4/15/-19/0.00/0.0/679/96 32 W AERO 40 WNW RMY N/A
3/13 33/8/21/-13/0.00/0.0/667/94 25 WNW AERO 29 WNW RMY N/A
3/14 38/23/31/-4/2.15/7.3/000/00 60 NE AERO 62 NE RMY 62
3/15 27/15/21/-14/0.00/0.0/536/75 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/…./T/…/.. 37 S AERO 38 S RMY 39
3/25 44/31/38/0/…./…/…/.. 22 NE AERO 20 NE RMY 21
3/26 42/29/36/-3/0.00/0.0/…/.. 25 ENE AERO 23 ENE RMY 25
3/27 Low temp since midnight is 33F; 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 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
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
TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle
