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Wednesday, March 28, 2018

March 28, 2018

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY WEDNESDAY, MARCH…

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

DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, MARCH 28, 2018
ALL TIMES ARE IN EASTERN STANDARD TIME

BIG SNOW MELT BEGINS AS TEMPERATURES RISE ABOVE 50F…

The day began with a rain shower on top of Great Blue
hill. It was fairly quick moving and we measured
0.01 ins. by 7:00 A.M. Rain ended around 8:00 A.M.
and we measured only an additional trace by 1:00 P.M.
The morning began with overcast skies but the sky
cloud cover decreased throughout the day for some
midday sunshine. Along with light and variable winds
this allowed the maximum temperature to quickly rise
today. We observed a max of 50F by 1:00 P.M. This is
2 degrees above the normal of 48F. This is the highest
daily maximum temperature since March 1st, 61F. So far
March has been running about 2 degrees below normal.

Blue Hill Observatory Greatest March Snowfall Totals,
Inches (1885-2018)

1) 52.0 in 1956
2) 45.5 in 2018 (through 3/28)
3) 42.2 in 1916
4) 41.4 in 2001
5) 41.0 in 1967
6) 37.8 in 2013
7) 35.5 in 1993

Today’s Observations:

7 A.M.
Weather: Overcast altostratus
Temperature: 36F; Dew Point: 21F; Wind: ESE at 3 kts,
Wind: Light
Sea-level pressure: 30.06 ins. Hg, rising then falling
Visibility: 45 miles
6-hr Max temp: 36F
6-hr Min temp: 34F
24-hr precip:  0.01 ins.
24-hr snowfall: 0.0 ins.
Snow depth: 7 ins.
BHO SA 1155 E120 OVC 45 180/36/21/E1103/006/ WND LGT/
8/02/ 4/007 58015 MANUAL 70001 ASOS 70001 10036 20034

10 A.M.
Weather: Broken stratocumulus, broken altocumulus,
broken altostratus
Temperature: 42F; Dew Point: 25F; Wind: W at 5 kts,
Wind: Light and variable
Sea-level pressure: 30.04 ins. Hg, falling then rising
Visibility: 45 miles, distant haze in all directions
3-hr precip: Trace
3-hr snowfall: 0.0 ins.
BHO SA 1455 E33 BKN 70 BKN 120 BKN 45 173/42/25/2705/004/
DSNT HZ ALQDS WND L/V/ 8/510 57007 MANUAL 600//

1 P.M.
Weather: Scattered altocumulus, scattered cirrocumulus,
broken cirrostratus
Temperature: 50F; Dew Point: 32F; Wind: WSW at 3 kts,
Wind: Light and variable, direction estimated
Sea-level pressure: 29.99 ins. Hg, falling then more slowly
Visibility: 70 miles
6-hr Max temp: 50F
6-hr Min temp: 35F
6-hr precip: Trace
6-hr snowfall: 0.0 ins.
Snow depth: 5 ins.
BHO SA 1755 120 SCT 250 SCT E300 BKN 70 156/50/32/E2403/999/
WND L/V/ 8/038 4/005 56017 MANUAL 600// 10050 20035

SUMMARY FOR TUESDAY, MARCH 27, 2018

TEMPERATURE (DEGREES F)
MAX…..44   NORMAL…..48
MIN…..25   NORMAL…..30
MEAN….35   NORMAL…..39

DEPARTURE FROM 30-YEAR NORMAL……………………….-4
TOTAL DEPARTURE FOR THE MONTH………………………-50 [-2.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY………….30   DEPARTURE……….+4
TOTAL HEATING UNITS FOR THE MONTH…………870   DEPARTURE………+55
TOTAL HEATING UNITS FOR THE SEASON……….4992   DEPARTURE……..-391
TOTAL HEATING UNITS LAST SEASON TO DATE…..4797   DIFFERENCE…….+198

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….24 NE  AT 10:32 A.M.
AERO……………………17 NE  AT  9:32 A.M.
ASOS……………………21 ENE AT  9:33 A.M.
DAVIS…………………..20 M   AT  9:33 A.M ** RMY 20
FASTEST MILE FOR YESTERDAY…………………13 NE  AT 10:45 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………15 ENE AT  9:34 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..13 M   AT  8:30 A.M.**
AVERAGE WIND SPEED AND DIRECTION…………..8.3 NE
ASOS…………………..9.4
DAVIS………………….7.9
** Davis direction malfunctioning

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……….8.61  DEPARTURE……+3.92
ASOS…………..9.33
TOTAL PRECIPITATION FOR THE YEAR……….18.72  DEPARTURE……+5.61
ASOS………….20.18

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0  DEPARTURE……..-0.3
TOTAL SNOWFALL FOR THE MONTH……………45.5  DEPARTURE…….+33.9
TOTAL SNOWFALL FOR THE SEASON…………..90.2  DEPARTURE…….+31.5

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

3/01 61/37/49/+18/0.00/0.0/378/56    39 ENE AERO 37 ENE RMY N/A
3/02 40/32/36/+5/3.47/0.7/000/00     73 NNE AERO 70 NNE RMY N/A
3/03 40/32/26/+4/T/T/034/05          52 NNE AERO 50 NNE RMY 49
3/04 39/34/37/+5/T/T/000/00          36 NNE AERO 32 NNE RMY 32
3/05 40/29/35/+3/…/1.2/261/38      40 NE  AERO 39 NE  RMY 40
3/06 34/29/32/0/0.00/0.0/062/09      20 N   AERO 16 N   RMY N/A
3/07 35/31/33/0/…./…/000/00      52 ENE AERO 53 ENE RMY 50
3/08 34/28/31/-2/…./…/000/00     44 NNE AERO 47 NNE RMY N/A
3/09 36/24/30/-3/T/T/265/38          28 W   AERO 26 W   RMY N/A
3/10 37/28/33/0/0.00/0.0/343/49      38 WNW AERO 38 WNW RMY 41
3/11 42/26/34/0/0.00/0.0/583/83      28 NW  AERO 26 NW  RMY 29
3/12 39/26/33/-1/T/T/155/22          36 ENE AERO 33 ENE RMY N/A
3/13 35/26/31/-3/…./23.0/000/00    60 N   AERO 60 N   RMY 64
3/14 36/24/30/-5/…./…/470/66     38 WSW AERO 38 WSW RMY 41
3/15 40/29/35/0/…./…/…/..      44 W   AERO 44 W   RMY 44
3/16 35/23/29/-6/0.00/0.0/…/..     41 NW  AERO 41 NW  RMY 45
3/17 40/15/28/-8/0.00/0.0/…/…    46 W   AERO 45 W   RMY 49
3/18 31/10/21/-15/0.00/0.0/…/..    39 NW  AERO 38 NW  RMY 40
3/19 35/13/24/-12/0.00/0.0/…/..    32 WNW AERO 32 WNW RMY 34
3/20 40/18/29/-8/0.00/0.0/…/..     23 NW  AERO 21 NW  RMY N/A
3/21 35/31/33/-4/…./…/000/00     43 NE  AERO 44 NE  RMY N/A
3/22 39/30/35/-2/…./…/000/00     28 NNW AERO 26 NNW RMY 30
3/23 44/28/36/-2/…./…/…/..     21 NNW AERO 18 NNW RMY 21
3/24 45/32/39/+1/T/T/…/..          23 NE  AERO 21 NE  RMY N/A
3/25 36/29/33/-5/0.18/1.8/…/..     35 NNE AERO 30 NNE RMY 33
3/26 38/27/33/-6/0.00/0.0/…/..     33 NE  AERO 26 NE  RMY 30
3/27 44/25/35/-4/0.00/0.0/…/…    24 NE  AERO 17 NE  RMY 20

3/28 Low temp since midnight is 34F; normal low is now 31F

DAILY RECORDS FOR MARCH 2018

3/02/18: NEW DAILY RECORD MAXIMUM PRECIPITATION OF 3.47 INS.
PREVIOUS RECORD WAS 2.15 INS. SET IN 1983

3/13/18: NEW DAILY RECORD MAXIMUM SNOWFALL OF 23.0 INS.
PREVIOUS RECORD WAS 10.0 INS. SET IN 1993

3/13/18: NEW MONTHLY RECORD MAXIMUM DAILY SNOWFALL OF 23.0 INS.
PREVIOUS RECORD WAS 18.0 INS. SET ON 8 MARCH 2013

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):

RECORDS FOR MARCH 28
HIGH 86 IN 1998
LOW 7 IN 1923
PRECIP 2.31 INS. IN 1932
SNOWFALL 3.0 INS. IN 1932
PEAK GUST 60e MPH NW IN 1944, 60 WSW IN 1991

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

TODAY’S REPORT PREPARED BY: Kaitlin Geagan

 

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Blue Hill Observatory & Science Center · Legal

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Please read the full Policy before accessing Observatory data · Effective January 1, 2025

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Effective January 1, 2025 · Milton, Massachusetts · bluehill.org
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