Sunday, March 12, 2017
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, MARCH 12, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME
CLEAR SKIES INTO EARLY AFTERNOON WITH GUSTY WESTERLY WINDS
Yesterday’s high temperature of 20F tied the previous record
of low maximum temperature set in 1885. Despite very cold
conditions, no minimum temperature records have been broken
during this cold spell. Yesterday’s average temperature of
14F was 20F below normal.
The cold conditions continued today with an overnight minimum
of 4F. Temperatures had risen to 23F by the 1:00PM EST ob.
Skies started completely clear of clouds but began to fill with
few cirrus throughout the day. Visibility held at 40 miles due
to hazy conditions.
Moderate wind gusts made the day feel even colder. Westerly winds
were consistently gusting up to 30 MPH through the early afternoon.
Today’s Observations:
7 A.M.
Weather: Clear
Temperature: 6F; Dew Point: -4F; Wind: WNW at 8 kts
Sea-level pressure: 30.19 ins. Hg, rising, then more quickly
Visibility: 40 miles, distant haze
6-hr Max temp: 9F
6-hr Min temp: 4F
24-hr precip: 0.00 in.
24-hr snowfall: 0.0 in.
BHO SA 1155 CLR 40 223/06/M4/3008/019/ SKC DSNT HZ/ 4/002 53006 10009 20004
10 A.M.
Weather: Few cirrus SW
Temperature: 15F; Dew Point: -5F; Wind: W at 14G21 kts
Sea-level pressure: 30.16 ins. Hg, steady, then falling
Visibility: 40 miles, distant haze
BHO SA 1455 CLR 40 214/15/M5/2814G21/016/ FEW CI SW DSNT HZ/ 8/001 58009
1 P.M.
Weather: Few cirrus SW-NW
Temperature: 22F; Dew Point: 2F; Wind: W at 14G22 kts,
Peak Wind: 26 kts (30 MPH) W at 12:34 A.M. EST
Sea-level pressure: 30.13 ins. Hg, falling, then more quickly
Visibility: 40 miles, distant haze
6-hr Max temp: 23F
6-hr Min temp: 6F
BHO SA 1755 CLR 40 204/22/02/2714G22/013/ FEW CI SW-NW DSNT HZ
PK WND 2726/34/ 8/001 4/002 58010 10023 20006
SUMMARY FOR SATURDAY, MARCH 11, 2017
TEMPERATURE (DEGREES F)
MAX…..20 NORMAL…..43
MIN……7 NORMAL…..25
MEAN….14 NORMAL…..34
DEPARTURE FROM 30-YEAR NORMAL……………………-20
TOTAL DEPARTURE FOR THE MONTH…………………….-5 [-0.7 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..51 DEPARTURE………+20
TOTAL HEATING UNITS FOR THE MONTH………….364 DEPARTURE……….+5
TOTAL HEATING UNITS FOR THE SEASON………..4241 DEPARTURE……..-686
TOTAL HEATING UNITS LAST SEASON TO DATE……3965 DIFFERENCE…….+276
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….43 W AT 1:46 P.M.
AERO……………………47 W AT 4:00 P.M.
ASOS……………………47 W AT 4:01 P.M.
DAVIS…………………..47 WNW AT 4:01 P.M. RMY 50
FASTEST MILE FOR YESTERDAY…………………35 W AT 4:01 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………33 W AT 4:02 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..34 WNW AT 4:02 P.M.
AVERAGE WIND SPEED AND DIRECTION………….20.7 WNW
ASOS………………….20.7
DAVIS…………………18.6 NW [310 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……….0.36 DEPARTURE……-1.56
ASOS…………..0.40
TOTAL PRECIPITATION FOR THE YEAR………..9.64 DEPARTURE……-0.70
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…….-0.5
TOTAL SNOWFALL FOR THE MONTH…………….3.1 DEPARTURE…….-2.5
TOTAL SNOWFALL FOR THE SEASON…………..55.4 DEPARTURE…….+2.8
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/…/.. 41 S AERO 45 S RMY 45
3/2 55/26/41/+10/T/T/…/.. 58 W AERO 61 W RMY 59
3/3 36/19/28/-4/T/T/…/.. 38 W AERO 44 W RMY N/A
3/4 20/7/14/-18/T/T/…/.. 45 NW AERO 48 NW RMY 51
3/5 29/5/17/-15/0.00/0.0/…/.. 35 WNW AERO 43 WNW*RMY N/A
3/6 40/11/26/-6/0.00/0.0/…/.. 18 WNW AERO 17 NW* RMY N/A
3/7 47/29/38/+5/0.01/0.0/…/.. 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/…./…/…/.. 35 WNW AERO 44 WNW RMY 40
3/11 20/7/14/-20/…./…/…/.. 43 W AERO 47 W RMY 50
3/12 Low temp since midnight is 4F; normal low is now 25F
DAILY RECORDS FOR MARCH 2017
3/11/17: DAILY RECORD LOW MAXIMUM TEMPERATURE OF 20F,
TIES PREVIOUS RECORD SET IN 1885
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR MARCH 12
HIGH 72 IN 2012
LOW 2 IN 1885
PRECIP 2.87 INS. IN 1888
SNOWFALL 9.7 INS. IN 1959
PEAK GUST 66 MPH SE IN 1962
RECORDS FOR MARCH 13
HIGH 72 IN 1990
LOW -1 IN 1885
PRECIP 2.47 INS. IN 1993
SNOWFALL 10.0 INS. IN 1993
PEAK GUST 76 MPH ENE IN 1993 [THE “STORM OF THE CENTURY”]
TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle
