Monday, March 4, 2019

| March 4, 2019 | Reply

BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, MARCH 4, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

LAST NIGHT’S STORM BRINGS BLUE HILL BACK
TO NORMAL SEASONAL SNOWFALL AMOUNTS FOLLOWING
A WINTER WITH LESS THAN AVERAGE SNOWFALL….

Last night’s snow total of 15.8 inches brings
us to only 4 inches under the normal seasonal
amount. The liquid total for the storm was 1.79
inches at 7 A.M., with an additional 0.03 inches
falling before 10 A.M. Visibility this morning
was a 1/2 mile due to snow and fog, but improved
to 60 miles shortly after noontime. The high
temperature so far today is 35F, 6 degrees below
the daily maximum of 41F. The low since midnight
is 30F, 7 degrees above the normal minimum of 23F.

PRELIMINARY STATS FOR FEBRUARY 2019

TEMPERATURE, Deg. F
Avg. Max. 37.3 [+0.5]
Avg. Min. 21.6 [-2.5]
Mean      29.5 [+1.6]
24-hour corrected mean: 29.2
Max. for month: 62F on the 5th
Min. for month: 5F  on the 1st

HEATING DEGREE DAYS
Total heating units:    990 [-47]
Total for the season:  4486 [-82]
Total for last season: 4122

PRECIPITATION, Inches
Total: 3.61 [-0.46]
Greatest in 24 hrs: N/A

SNOWFALL, Inches
Total: 12.1 [-1.8]
Greatest in 24 hrs: N/A

WIND, mph
Avg. uncorrected wind speed: 12.9
Avg. corrected wind speed: 13.3
Prevailing wind direction: WNW at 22%
Peak gust and direction: 66 W on 25th

SUNSHINE:
Campbell-Stokes card minutes: N/A
Astronomical total minutes:   N/A

Today’s Observations:

7 A.M.
Weather: Sky obscured in moderate snow and fog
Temperature: 30F; Dew Point: 30F; Wind: NNW at 12G18 kts
Sea-level pressure: 29.60 ins. Hg, falling rapidly
Visibility: 1/2 mile, fog
6-hr Max temp: 30F
6-hr Min temp: 30F
24-hr Precip:  1.79 ins.
24-hr snowfall: 15.8 ins.
Snow depth: 19 ins.
BHO SA 1155 W3 X 1/2SF 023/30/30/3412G18/960/ S CTD/
8//// 4/019 70179 58035 10030 20030

10 A.M.
Weather: Overcast nimbostratus, very light snow
Temperature: 31F; Dew Point: 31F; Wind: NNW at 12G20 kts
Sea-level pressure: 29.62 ins. Hg, increasing then steady
Visibility: 5 miles, fog in all directions
3-hr Precip: 0.03 ins.
BHO SA 1455 E60 OVC 5S-F 032/31/31/3412G20/962/
S-CTD PCPN VRY LGT/ 8/02/ 6003/ 51009

1 P.M.
Weather: Broken stratocumulus
Temperature: 35F; Dew Point: 33F; Wind: NW at 13G22 kts
Sea-level pressure: 29.65 ins. Hg, rising steadily
Visibility: 60 miles
6-hr Max temp: 35F
6-hr Min temp: 30F
6-hr Precip:  0.03 ins.
6-hr snowfall: Trace
Snow depth: 17 ins.
BHO SA 1755 E35 BKN 60 040/35/33/3013G22/965/ 8/800
4/017 6/003 53008 10035 20030

SUMMARY FOR SUNDAY, MARCH 3, 2019

TEMPERATURE (DEGREES F)
MAX…..40   NORMAL…..41
MIN…..25   NORMAL…..23
MEAN….33   NORMAL…..32

DEPARTURE FROM 30-YEAR NORMAL……………………+1
TOTAL DEPARTURE FOR THE MONTH……………………-1 [-0.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..32   DEPARTURE………-1
TOTAL HEATING UNITS FOR THE MONTH………….105   DEPARTURE………+4
TOTAL HEATING UNITS FOR THE SEASON………..4591   DEPARTURE……..-78
TOTAL HEATING UNITS LAST SEASON TO DATE……4196   DIFFERENCE……+395

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..21 ESE AT  5:28 P.M.
AERO…………………….14 ESE AT  3:38 P.M.
ASOS…………………….20 ESE AT  3:40 P.M.
DAVIS……………………20 ESE AT  3:43 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY………………….15 ESE AT  3:46 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….15 SE  AT  3:44 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………16 ESE AT  3:44 P.M.
AVERAGE WIND SPEED AND DIRECTION……………7.1 SE
ASOS……………………7.2
DAVIS…………………..7.4 S [187 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….1.79  DEPARTURE…….+1.64
ASOS…………..1.81
TOTAL PRECIPITATION FOR THE MONTH……….2.29  DEPARTURE…….+1.64
ASOS…………..2.31
TOTAL PRECIPITATION FOR THE YEAR……….11.23  DEPARTURE…….+0.67
ASOS………….11.36

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………15.8  DEPARTURE…….+15.3
TOTAL SNOWFALL FOR THE MONTH……………20.0  DEPARTURE…….+18.5
TOTAL SNOWFALL FOR THE SEASON…………..44.5  DEPARTURE……..-4.0

PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 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

02/01 19/5/12/-14/0.00/0.0/552/95          29 W   AERO 28 W   RMY N/A
02/02 30/7/19/-7/0.00/0.0/318/55           32 WSW AERO 32 WSW RMY 31
02/03 38/27/33/+7/0.00/0.0/126/22          26 S   AERO 25 S   RMY N/A
02/04 59/33/46/+20/0.00/0.0/540/93         25 SSW AERO 28 SSW RMY N/A
02/05 62/39/51/+25/0.00/0.0/354/60         30 WNW AERO 29 WNW RMY 32
02/06 39/28/34/+8/…./…/396/67          24 NNW AERO 23 NNW RMY N/A
02/07 37/31/34/+7/…./…/000/00          28 ENE AERO 24 ENE RMY 28
02/08 51/27/39/+12/…./…/204/34         46 W   AERO 46 WNW RMY 51
02/09 32/20/26/-1/0.00/0.0/594/100         50 WNW AERO 52 WNW RMY 52
02/10 33/18/26/-1/0.00/0.0/510/85          24 WNW AERO 23 WNW RMY 25
02/11 34/21/28/+1/0.00/0.0/318/53          24 NNW AERO 23 NNW RMY 25
02/12 33/13/23/-4/…./2.8/000/00          32 E   AERO 30 E   RMY 26
02/13 39/29/34/+6/…./0.1/018/03          36 W   AERO 32 W   RMY 36
02/14 37/26/32/+4/0.00/0.0/594/97          44 WNW AERO 42 WNW RMY 45
02/15 49/29/39/+11/0.11/0.0/060/10         40 S   AERO 40 S   RMY 44
02/16 44/26/35/+7/0.00/0.0/504/82          25 NW  AERO 25 NW  RMY N/A
02/17 37/19/28/0/…./…/618/100          30 NNW AERO 25 NNW RMY N/A
02/18 30/16/23/-6/…./…/000/00          35 NW  AERO 36 NW  RMY 41
02/19 30/10/20/-9/0.00/0.0/618/99          35 NW  AERO 33 NW  RMY N/A
02/20 26/12/19/-10/…./…/000/00         16 WNW AERO 14 SSW RMY N/A
02/21 43/21/32/+3/…./…/294/47          36 W   AERO 33 W   RMY 38
02/22 43/30/37/+8/…./0.0/504/80          22 NW  AERO 21 NW  RMY 23
02/23 38/24/31/+1/0.00/0.0/336/53          18 NNW AERO 16 NNW RMY N/A
02/24 45/30/38/+8/…./…/000/00          41 W   AERO 37 W   RMY 47
02/25 37/25/31/+1/…./…/336/57          66 W   AERO 59 W   RMY M
02/26 29/14/22/-8/0.00/0.0/642/100         46 WNW AERO 39 WNW RMY 47
02/27 22/9/16/-15/…./…/180/28          35 WNW AERO 26 WNW RMY N/A
02/28 28/15/22/-9/…./…/486/75          22 NW  AERO 18 NW  RMY 22

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

03/01 38/17/28/-3/…./…/..              16 NNW AERO 13 NNW RMY 22
03/02 31/27/29/-2/…./…/.. 29 NNE AERO 22 NNE RMY 30
03/03 40/25/33/+1/…./…/..              21 ESE AERO 14 ESE RMY N/A

03/04 Low temp since midnight is 30F; normal low is 23F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):

RECORDS FOR MARCH 4
HIGH 69 IN 1974
LOW -5 IN 1950
PRECIP 1.80 IN 1960
SNOWFALL 17.3 IN 1960
PEAK GUST 81e MPH SSW IN 1971

RECORDS FOR MARCH 5
HIGH 64 IN 1979
LOW -2 IN 1948
PRECIP 1.76 INS. IN 2001
SNOWFALL 13.0 INS. IN 1891
PEAK GUST 76e MPH WNW IN 1971

TODAY’S REPORT PREPARED BY: Benjamin Turner

Category: Daily Discussions

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