Wednesday, March 29, 2017
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, MARCH 29, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME
EVENING THUNDERSTORM BRINGS 0.80 INS. OF PRECIP.
Rain began again late yesterday afternoon and lasted
until early this morning. Thunder was reported in
the area in the late evening. Total precip. measured
0.80 in. making the total for the month now 3.92 in.
Light drizzle and fog continued through the 10:00AM EST
observation.
Fog cleared by early afternoon allowing Mount Wachusett
and Mount Monadnock to be visible for the first time
in almost three days. Skies continued to be overcast
through 1:00PM EST, and no sunshine has been recorded
since Sunday afternoon.
Today’s Observations:
7 A.M.
Weather: Light drizzle, sky obscurement due to fog
Temperature: 36F; Dew Point: 36F; Wind: NNW at 13G20 kts
Sea-level pressure: 29.99 ins. Hg, rising, then more slowly
Visibility: 1/8 mile
6-hr Max temp: 36F
6-hr Min temp: 35F
24-hr precip: 0.80 in.
24-hr snowfall: 0.0 in.
BHO SA 1155 W2 X 1/8L-F 157/36/36/3413G20/999/ 8//// 51017
MANUAL 70080 ASOS 70079 10036 20035
10 A.M.
Weather: Light drizzle, broken stratus, overcast stratus
Temperature: 38F; Dew Point: 37F; Wind: NNW at 8 kts
Sea-level pressure: 30.02 ins. Hg, steady then rising
Visibility: 8 miles, except 10 miles NNE-S
3-hr precip: Trace
3-hr snowfall: 0.0 in.
BHO SA 1455 E4 BKN 13 OVC 8L- 167/38/37/3408/002/ VSBY NNE-S 10
PCPN VRY LGT/ 8/6// 51010 MANUAL 600//
1 P.M.
Weather: Broken stratocumulus, overcast stratus
Temperature: 43F; Dew Point: 35F; Wind: NW at 8 kts
Sea-level pressure: 30.02 ins. Hg, rising then falling
Visibility: 70 miles
6-hr Max temp: 43F
6-hr Min temp: 36F
6-hr precip: Trace
6-hr snowfall: 0.0 in.
BHO SA 1755 E34 BKN 42 OVC 70 166/43/35/3208/002/ 8/6// 58001
MANUAL 600// 10043 20036
SUMMARY FOR TUESDAY, MARCH 28, 2017
TEMPERATURE (DEGREES F)
MAX…..40 NORMAL…..48
MIN…..33 NORMAL…..31
MEAN….37 NORMAL…..39
DEPARTURE FROM 30-YEAR NORMAL…………………….-2
TOTAL DEPARTURE FOR THE MONTH…………………..-104 [-3.9 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..28 DEPARTURE……….+2
TOTAL HEATING UNITS FOR THE MONTH………….945 DEPARTURE……..+104
TOTAL HEATING UNITS FOR THE SEASON………..4822 DEPARTURE……..-587
TOTAL HEATING UNITS LAST SEASON TO DATE……4365 DIFFERENCE…….+457
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….16 N AT 10:51 P.M.
AERO……………………15 N AT 11:49 P.M.
ASOS……………………18 N AT 11:50 P.M.
DAVIS…………………..15 E AT 4:05 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY…………………11 ENE AT 7:35 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………13 ENE AT 7:38 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..11 E AT 4:49 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..6.2 NE
ASOS…………………..6.7
DAVIS………………….4.9 ENE [070 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.80 DEPARTURE……+0.62
ASOS…………..0.79
TOTAL PRECIPITATION FOR THE MONTH……….3.92 DEPARTURE……-1.13
ASOS…………..4.16
TOTAL PRECIPITATION FOR THE YEAR……….13.20 DEPARTURE……-0.27
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…….-1.6
TOTAL SNOWFALL FOR THE SEASON…………..62.6 DEPARTURE…….+3.7
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/-10/0.00/0.0/696/97 36 W AERO 37 W RMY 38
3/17 40/22/31/-5/0.00/0.0/577/80 25 WNW AERO 24 WNW RMY 27
3/18 36/24/30/-6/0.00/0.0/557/77 26 ENE AERO 24 ENE RMY 26
3/19 35/28/32/-4/0.01/T/153/21 39 N AERO 37 N RMY 39
3/20 49/29/39/+2/0.00/0.0/686/94 31 N AERO 35 N RMY 36
3/21 52/34/43/+6/0.00/0.0/418/57 28 W AERO 26 W RMY N/A
3/22 38/15/27/-10/T/T/603/82 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/-3/0.02/T/…/.. 37 S AERO 38 S RMY 39
3/25 44/31/38/0/0.07/…/…/.. 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 43/33/38/-1/0.51/0.0/000/00 22 E AERO 18 E RMY N/A
3/28 40/33/37/-2/…./0.0/000/00 16 N AERO 15 N RMY N/A TSTM
3/29 Low temp since midnight is 35F; normal low is now F
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 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
RECORDS FOR MARCH 30
HIGH 83 IN 1977
LOW 10 IN 1887
PRECIP 2.92 INS. IN 2010
SNOWFALL 3.9 INS. IN 1957
PEAK GUST 60 MPH NW IN 1999
TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle
