Monday, March 11, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, MARCH 11, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0602E
SUNSET: 1747E
A MIX OF SUN AND CLOUDS TODAY, SEASONABLE TEMPERATURES BUT VERY
WINDY…
Just a note; Here at BHO we do not use DST, thus all times within
our discussions will continue to be in EST. We do this for continuity
purposes, as well as to keep our record keeping/reporting simplified.
Today has featured a mix of sun and clouds after an area of very
light snow moved through the region during the pre-dawn hours. Only
a trace of snow was recorded, but marks the first flakes to fly so
far in March.
Temperatures have been seasonable with readings in the low 40s,
however the dew point has been in the upper teens to low 20s. The
dry air mass is making it feel quite a bit colder than it is.
Also adding to the chill are the very gusty winds. West-northwest
to northwest winds have been averaging around 21mph for the day
so far. Frequent gusts of 40-50mph have been occurring since the
mid-late morning hours. The peak gust so far for today is 53mph,
occurring just after 11am this morning.
Visibility has been excellent all day with a view of 80 miles!
The maximum temperature so far today is 43F degrees, which is
1 degree above the normal high of 42F. The minimum temperature
since midnight is 30F degrees, which is 5 degrees above the normal
low of 25F.
————————————————————–
Today’s Observations:
7 A.M.
Weather: Scattered stratocumulus, broken altocumulus, broken
cirrostratus, broken cirrus, virga distant ENE-SE
Temperature: 30F; Dew Point: 19F; Relative Humidity: 64%
Wind: WNW @ 13G29 kts, peak wind WNW 40mph at 6:02 A.M.
Sea-level pressure: 994.3 mb; 29.36 in. Hg: rising, then more rapidly
Visibility: 80 miles
6-hr Max temp: 34F
6-hr Min temp: 30F
24-hr Precip: Trace
24-hr Snowfall: Trace
Snow Depth: 0 inches
BHO SA 1155 30 SCT E100 BKN 180 BKN 250 BKN 80 943/30/19/3013G29/936/
VIRGA DSNT ENE-SE PK WND 3035/02/ TOTAL NEW SNW PST 24 HRS TRACE/
8/558 53023 6000/ 70000 10034 20030
10 A.M.
Weather: Broken stratocumulus, broken cirrostratus, broken cirrus
Temperature: 37F; Dew Point: 20F; Relative Humidity: 49%
Wind: NW @ 18G30 kts, peak wind NW 44mph at 9:23 A.M.
Sea-level pressure: 995.5 mb; 29.40 in. Hg: rising, then more slowly
Visibility: 80 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E40 BKN 180 BKN 250 BKN 80 955/37/20/3118G30/940/
PK WND 3238/23/ 8/507 51012
1 P.M.
Weather: Broken stratocumulus, broken cirrostratus, broken cirrus,
virga distant WNW-NW
Temperature: 40F; Dew Point: 22F; Relative Humidity: 47%
Wind: WNW @ 24G43 kts, peak wind WNW 50mph at 12:54 P.M.
Sea-level pressure: 996.2 mb; 29.42 in. Hg: falling, then rising
Visibility: 80 miles
6-hr Max temp: 43F
6-hr Min temp: 30F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 E50 BKN 180 BKN 250 BKN 80 962/40/22/3024G43/942/
VIRGA DSNT WNW-NW PK WND 3043/54/ 8/507 53007 10043 20030
————————————————————–
SUMMARY FOR SUNDAY, MARCH 10, 2024
TEMPERATURE (DEGREES F)
MAX…….51 NORMAL…..42
MIN…….36 NORMAL…..25
MEAN……44 NORMAL…..34
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………..+10
TOTAL DEPARTURE FOR THE MONTH…………………..+81 [+7.9 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…………..244 DEPARTURE…….-82
TOTAL HEATING UNITS FOR THE SEASON…………4132 DEPARTURE……-626
TOTAL HEATING UNITS LAST SEASON TO DATE…….4013 DEPARTURE……+119
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)……….E45 WNW @ 11:34 P.M.
VECTOR #1 (1-Sec)……….46 SE @ 04:57 A.M.
VECTOR #2 (1-Sec)……….41 SSE @ 05:45 A.M.
DAVIS #1……………….44 SSE @ 06:16 A.M.
DAVIS #2 ………………47 S @ 06:31 A.M.
RMY #1 (Instantaneous)…..45 SSE @ 06:16 A.M.
RMY #2 (Instantaneous)…..42 SE @ 04:39 A.M.
MERLIN…………………40 SSE
RICHARDS (C5C) (Inst)……44 @ 06:16 A.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………31 SSE @ 05:38 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..28 @ 05:09 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..29 @ 11:46 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………29 SSE @ 01:10 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………28 WNW @ 11:47 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..27 ESE @ 01:03 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..29 SE @ 05:13 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………28 @ 05:09 A.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……17.9 WNW [430 total miles]
VECTOR #1…………….17.2
VECTOR #2…………….18.5
DAVIS #1……………..17.8 W
DAVIS #2……………..18.3 W
RMY #1……………….16.5 W
RMY #2……………….18.2 W
RICHARDS (C5C)………..17.4
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….TRACE DEPARTURE…..-0.18
TOTAL PRECIPITATION FOR THE MONTH…………..4.33 DEPARTURE…..+2.58
TOTAL PRECIPITATION FOR THE YEAR (2024)…….14.89 DEPARTURE…..+4.64
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………TRACE DEPARTURE……-0.6
TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE……-6.1
TOTAL SNOWFALL FOR THE SEASON (2023-2024)……26.1 DEPARTURE…..-31.9
————————————————————–
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/…/.. 35 NNE VEC1 36 NNE RMY 38
3/9 40/32/36/+3/0.21/0.0/…/.. 32 E VEC1 32 E RMY 31
3/10 51/36/44/+10/1.07/0.0/…/.. 45 WNW VEC1 46 SE RMY 45
3/11 The low since midnight is 30F, the daily normal low is 25F.
————————————————————–
MARCH DAILY RECORDS TO DATE
NONE…
————————————————————–
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR MARCH 11
HIGH 71 IN 2021
LOW 4 IN 1939, 1960
PRECIP 2.11 INS. IN 1901
SNOWFALL 6.3 INS. IN 1934
PEAK GUST 66e MPH W IN 1980
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
TODAY’S REPORT PREPARED BY: Matt Douglas
