BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, MARCH 19, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME
STORM LEAVES JUST A TRACE OF SNOWFALL AT
BHO BUT BRINGS INCREASING NORTHERLY WINDS
The storm over the Cape has brought us overcast skies
and increasing northerly winds. The peak gust so far
this afternoon has been 38 MPH. Light, dry snow began
early this morning leaving 0.01 in. of precip. but just
a trace of snow. Very light snowfall continued through
7:00AM EST and ended shortly after the morning observation.
Distant fog limited visibility down to 30 miles this morning,
but some clearing had allowed sector visibility to increase
to 70 miles at the 1:00PM ob. Temperatures remain colder than
average with a max. at 1:00PM of 34F.
Today’s Observations:
7 A.M.
Weather: Light snow, broken stratocumulus, overcast stratus
Temperature: 29F; Dew Point: 28F; Wind: N at 10 kts
Sea-level pressure: 30.23 ins. Hg, steady, then rising
Visibility: 30 miles, except 50 miles ENE-S, distant fog SSW-NE
6-hr Max temp: 32F
6-hr Min temp: 28F
24-hr precip: 0.01 in.
24-hr snowfall: Trace
BHO SA 1155 E19 BKN 25 OVC 30S- 238/29/28/3610/023/ VSBY ENE-S 50 DSNT FG SSW-NE
PCPN VRY LGT NEW SNW PST 24 HRS TRACE/ 8/6// 4/004 53005 MANUAL 70001 ASOS 70001
10032 20028
10 A.M.
Weather: Broken stratocumulus, overcast stratus
Temperature: 32F; Dew Point: 26F; Wind: N at 11G19 kts
Sea-level pressure: 30.22 ins. Hg, falling, then more slowly
Visibility: 40 miles, distant fog in all directions
3-hr precip: Trace
3-hr snowfall: Trace
BHO SA 1455 E23 BKN 29 OVC 40 233/32/26/3611G19/022/ DSNT FG ALQDS
NEW SNW PST 3 HRS TRACE/ 8/6// 56005 MANUAL 600//
1 P.M.
Weather: Overcast stratus
Temperature: 33F; Dew Point: 27F; Wind: N at 16G28 kts,
Peak Wind: 29 kts (33 MPH) N at 12:33PM EST
Sea-level pressure: 30.18 ins. Hg, falling, then more quickly
Visibility: 30 miles, except 70 miles WSW-NNE, distant fog NE-SW
6-hr Max temp: 34F
6-hr Min temp: 29F
6-hr precip: Trace
6-hr snowfall: Trace
BHO SA 1755 E21 OVC 30 220/33/27/3616G28/018/ VSBY WSW-NNE 70 DSNT FG NE-SW
PK WND 3629/33 NEW SNW PST 6 HRS TRACE/ 8/6// 58013 MANUAL 600// 10034 20029
SUMMARY FOR SATURDAY, MARCH 18, 2017
TEMPERATURE (DEGREES F)
MAX…..36 NORMAL…..45
MIN…..24 NORMAL…..27
MEAN….30 NORMAL…..36
DEPARTURE FROM 30-YEAR NORMAL…………………….-6
TOTAL DEPARTURE FOR THE MONTH……………………-76 [-4.5 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..35 DEPARTURE……….+6
TOTAL HEATING UNITS FOR THE MONTH………….645 DEPARTURE………+76
TOTAL HEATING UNITS FOR THE SEASON………..4522 DEPARTURE……..-615
TOTAL HEATING UNITS LAST SEASON TO DATE……4099 DIFFERENCE…….+423
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….26 ENE AT 1:28 P.M.
AERO……………………24 ENE AT 1:25 P.M.
ASOS……………………29 ENE AT 1:27 P.M.
DAVIS…………………..25 E AT 1:26 P.M. RMY 26
FASTEST MILE FOR YESTERDAY…………………17 ENE AT 1:48 P.M. *
MAXIMUM 2-MINUTE ASOS AVERAGE………………20 ENE AT 1:48 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..17 E AT 1:48 P.M.
AVERAGE WIND SPEED AND DIRECTION………….11.4 ENE
ASOS………………….12.4
DAVIS…………………10.9 ENE [070 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……….2.52 DEPARTURE……-0.62
ASOS…………..2.73
TOTAL PRECIPITATION FOR THE YEAR……….11.80 DEPARTURE……+0.24
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……..Trace DEPARTURE…….-0.5
TOTAL SNOWFALL FOR THE MONTH……………10.3 DEPARTURE…….+1.7
TOTAL SNOWFALL FOR THE SEASON…………..62.6 DEPARTURE…….+7.0
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
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 Low temp since midnight is 28F; normal low is now 27F
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 19
HIGH 77 IN 2012
LOW -2 IN 1967
PRECIP 1.69 INS. IN 1956
SNOWFALL 17.6 INS. IN 1956 [RECORD FOR MONTH]
PEAK GUST 75e MPH WNW IN 1941
RECORDS FOR MARCH 20
HIGH 79 IN 1945
LOW 4 IN 1885
PRECIP 1.39 INS. IN 1957
SNOWFALL 11.4 INS. IN 1957
PEAK GUST 63 MPH SE IN 1975
TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle
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