Monday, March 13, 2017
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, MARCH 13, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME
CIRRUS CLOUDS MOVE IN AHEAD OF STORM
Skies were mostly clear again this morning but were
partly cloudy by early afternoon with scattered cirrus.
Wind direction began to shift south-southwest in the
late morning as wind speeds dropped yielding light winds
by the 1:00PM EST observation.
Temperatures have been slightly warmer today but still
remain colder than normal. Yesterday’s average temp. of
15F was 19F below average. The max. so far today is 29F.
Today’s Observations:
7 A.M.
Weather: Few cirrus NE-SW
Temperature: 12F; Dew Point: -1F; Wind: WNW at 10G17 kts
Sea-level pressure: 30.42 ins. Hg, rising, then more slowly
Visibility: 60 miles
6-hr Max temp: 13F
6-hr Min temp: 8F
24-hr precip: 0.00 in.
24-hr snowfall: 0.0 in.
BHO SA 1155 CLR 60 303/12/M1/2910G17/042/ FEW CI NE-SW
8/001 4/002 51023 10013 20008
10 A.M.
Weather: Few cirrus in all directions
Temperature: 20F; Dew Point: -1F; Wind: W at 8 kts
Sea-level pressure: 30.46 ins. Hg, falling then rising
Visibility: 70 miles
BHO SA 1455 CLR 70 315/20/M1/2808/046/ FEW CI ALQDS/ 8/001 53012
1 P.M.
Weather: Scattered cirrus
Temperature: 29F; Dew Point: 3F; Wind: SSW at 5 kts,
Wind Speed: Light
Sea-level pressure: 30.41 ins. Hg, falling, then more quickly
Visibility: 70 miles
6-hr Max temp: 29F
6-hr Min temp: 11F
BHO SA 1755 250 SCT 70 297/29/03/2105/041/ WND LGT/
8/001 4/001 58018 10029 20011
SUMMARY FOR SUNDAY, MARCH 12, 2017
TEMPERATURE (DEGREES F)
MAX…..25 NORMAL…..43
MIN……4 NORMAL…..25
MEAN….15 NORMAL…..34
DEPARTURE FROM 30-YEAR NORMAL……………………-19
TOTAL DEPARTURE FOR THE MONTH……………………-24 [-2.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..50 DEPARTURE………+19
TOTAL HEATING UNITS FOR THE MONTH………….414 DEPARTURE………+24
TOTAL HEATING UNITS FOR THE SEASON………..4291 DEPARTURE……..-667
TOTAL HEATING UNITS LAST SEASON TO DATE……3985 DIFFERENCE…….+306
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….32 W AT 2:41 P.M.
AERO……………………40 WNW AT 12:29 A.M.
ASOS……………………38 NW AT 12:30 A.M.
DAVIS…………………..36 NW AT 12:30 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY…………………24 W AT 5:49 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………24 W AT 5:50 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..23 NW AT 2:43 P.M.
AVERAGE WIND SPEED AND DIRECTION………….16.0 W
ASOS………………….16.0
DAVIS…………………14.3 NW [310 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00 DEPARTURE……-0.16
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….0.36 DEPARTURE……-1.72
ASOS…………..0.40
TOTAL PRECIPITATION FOR THE YEAR………..9.64 DEPARTURE……-0.86
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…….-0.4
TOTAL SNOWFALL FOR THE MONTH…………….3.1 DEPARTURE…….-2.9
TOTAL SNOWFALL FOR THE SEASON…………..55.4 DEPARTURE…….+2.4
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 25/4/15/-19/0.00/0.0/…/.. 32 W AERO 40 WNW RMY N/A
3/13 Low temp since midnight is 8F; normal low is now 26F
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 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”]
RECORDS FOR MARCH 14
HIGH 74 IN 1946
LOW 8 IN 1926
PRECIP 4.95 INS. IN 2010
SNOWFALL 6.7 INS. IN 1958
PEAK GUST 67 MPH ENE IN 2010
TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle
