Thursday, March 14, 2024

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

THURSDAY, MARCH 14, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0557E
SUNSET:  1750E

FILTERED SUNSHINE, BUT UNSEASONABLY MILD WITH A LIGHT WIND…

Sunshine has been the theme today only being filtered a bit through
high thin cirrus clouds. With above normal temperatures and a light
wind, it is a great day to be outdoors doing just about any activity.

Temperatures have reached the upper 50s early this afternoon, which
is around 15 or so degrees above the expected high temperature for
this date.

The wind has been quite light, even going calm at times during the
late morning hours. The average speed for the day so far is around
7mph. The peak gust for the day occurred back in the wee hours of
the morning with a value of around 20mph.

Visibility has been somewhat limited today, and actually decreasing
from early this morning. This is due to an increase in general
haziness as the dew point rises (more moisture in the air). The view
was 50 miles early this morning, but has decreased to only around
40 miles by early this afternoon.

The maximum temperature so far today is 58F degrees, which is
15 degrees above the normal high of 43F. The minimum temperature
since midnight is 36F degrees, which is 10 degrees above the normal
low of 26F.

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Today’s Observations:

7 A.M.
Weather: Thin broken cirrus, few altocumulus/castellanus distant NE-ESE
Temperature: 38F; Dew Point: 34F; Relative Humidity: 82%
Wind: SE @ 6 kts, wind light
Sea-level pressure: 1017.3 mb; 30.04 in. Hg: rising, then steady
Visibility: 50 miles, hazy
6-hr Max temp: 38F
6-hr Min temp: 36F
24-hr Precip:  0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 E250 -BKN 50 173/38/34/1406/004/ FEW AC/ACC DSNT NE-ESE
HAZY WND LGT/ 8/081 51009 10038 20036

10 A.M.
Weather: Thin broken cirrus
Temperature: 48F; Dew Point: 37F; Relative Humidity: 65%
Wind: Calm
Sea-level pressure: 1017.9 mb; 30.06in. Hg: rising, then falling
Visibility: 40 miles, hazy
3-hr Precip:  0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E250 -BKN 40 179/48/37/0000/006/ HAZY WND CALM/ 8/001 50006

1 P.M.
Weather: Thin scattered cirrus
Temperature: 57F; Dew Point: 39F; Relative Humidity: 51%
Wind: NE @ 4 kts, wind light
Sea-level pressure: 1017.7 mb; 30.05 in. Hg: rising, then falling
Visibility: 40 miles, hazy
6-hr Max temp: 58F
6-hr Min temp: 38F
6-hr Precip:  0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 250 -SCT 40 177/57/39/0404/005/ HAZY WND LGT/ 8/001 58002
10058 20038

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SUMMARY FOR WEDNESDAY, MARCH 13, 2024

TEMPERATURE (DEGREES F)
MAX…….54   NORMAL…..43
MIN…….33   NORMAL…..26
MEAN……44   NORMAL…..34

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………..+10
TOTAL DEPARTURE FOR THE MONTH………………….+104 [+7.8 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………21  DEPARTURE…….-10
TOTAL HEATING UNITS FOR THE MONTH…………..314  DEPARTURE……-105
TOTAL HEATING UNITS FOR THE SEASON…………4202  DEPARTURE……-649
TOTAL HEATING UNITS LAST SEASON TO DATE…….4103  DEPARTURE…….+99

PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all Main Tower.
E=Estimated

F420C (Official)……….E26 SSE  @  05:22 P.M.
VECTOR #1 (1-Sec)……….25 NNW  @  03:19 A.M.
VECTOR #2 (1-Sec)……….25 SSE  @  05:25 P.M.
DAVIS #1……………….23 NNW  @  03:19 A.M.
DAVIS #2 ………………28 S    @  07:09 P.M.
RMY #1 (Instantaneous)…..25 SSE  @  05:22 P.M.
RMY #2 (Instantaneous)…..25 SSE  @  05:25 P.M.
MERLIN…………………24 SSE
RICHARDS (C5C) (Inst)……25      @  05:22 P.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………17 SSE  @  11:17 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..17      @  11:16 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..17      @  11:18 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………17 SSE  @  11:16 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………19 S    @  07:09 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..17 SSE  @  11:16 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..18 SSE  @  11:18 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………17      @  11:16 P.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….9.4 NNW [225 total miles] VECTOR #1……………..9.6
VECTOR #2……………..9.8
DAVIS #1………………9.4 E
DAVIS #2………………9.0 E
RMY #1………………..9.3 NNE
RMY #2………………..9.8 NNE
RICHARDS (C5C)………..10.0

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.17
TOTAL PRECIPITATION FOR THE MONTH…………..4.33 DEPARTURE…..+2.07
TOTAL PRECIPITATION FOR THE YEAR (2024)…….14.89 DEPARTURE…..+4.13

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.5
TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE……-7.7
TOTAL SNOWFALL FOR THE SEASON (2023-2024)……26.1 DEPARTURE…..-33.5

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PRELIMINARY CLIMATE SUMMARY FOR MARCH CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN)/SUN(%)/PEAK GUST/VEC1/RMY GUST
PEAK GUST: F420C (Official)
VEC1: Vector #1 1-second gust
RMY:  R.M. Young #1 wind gust recording system (Instantaneous)
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M:    Missing data
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)

3/1   41/18/30/-1/0.00/0.0/649/96         30 NW  VEC1 30 WNW RMY 33
3/2   50/32/41/+9/1.16/0.0/000/00         44 SSE VEC1 46 SE  RMY 42
3/3   55/42/49/+17/0.24/0.0/130/19        32 SSE VEC1 33 SSE RMY 32
3/4   49/36/43/+11/0.01/0.0/116/17        24 ENE VEC1 22 ENE RMY 23
3/5   42/36/39/+7/0.14/0.0/000/00         21 E   VEC1 21 E   RMY 21
3/6   51/39/45/+12/0.44/0.0/000/00        28 NE  VEC1 28 NE  RMY 29
3/7   42/37/40/+7/1.06/0.0/000/00         44 NNE VEC1 44 NNE RMY 42
3/8   45/32/39/+6/0.00/0.0/682/98         35 NNE VEC1 36 NNE RMY 38
3/9   40/32/36/+3/0.21/0.0/000/00         32 E   VEC1 32 E   RMY 31
3/10  51/36/44/+10/1.07/0.0/245/35        45 WNW VEC1 46 SE  RMY 45
3/11  43/30/37/+3/T/T/515/73              53 NW  VEC1 54 NW  RMY 58
3/12  54/33/44/+10/0.00/0.0/680/96        43 NW  VEC1 41 NW  RMY 45
3/13  54/33/44/+10/0.00/0.0/667/94        26 SSE VEC1 25 NNW RMY 25

3/14 The low since midnight is 36F, the daily normal low is 26F.

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MARCH DAILY RECORDS TO DATE

NONE…

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

RECORDS FOR MARCH 14
HIGH 74 IN 1946
LOW 7 IN 1896
PRECIP 4.95 INS. IN 2010
SNOWFALL 7.3 INS. IN 2017
PEAK GUST 67 MPH ENE IN 2010

RECORDS FOR MARCH 15
HIGH 80 IN 1990
LOW 6 IN 1993
PRE 2.86 INS. IN 2010
SNOW 12.0 INS. 1967
WIND 73e MPH ESE IN 1940

TODAY’S REPORT PREPARED BY: Matt Douglas