Monday, January 29, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, JANUARY 29, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0701E
SUNSET: 1654E
WINTRY MIX YESTERDAY TURNS TO SNOW OVERNIGHT, BUT ONLY LIGHT
ACCUMULATION….
A storm system yesterday into early this morning brought a
potpourri of precipitation types during the day yesterday. The
event started as light rain, then quickly mixed with sleet and
snow, before going back to periods of rain. Sleet did continue
to mix in from time to time most of the day yesterday. Then
last evening, the wintry mix changed to periods of snow that
lasted into early this morning. 0.81″ of liquid was measured
in the gauge from this event. 1.5″ of snow and sleet was
measured on the snow board.
The balance of today to this point has featured overcast skies.
A few flurries were observed between 12-1pm. Temperatures have
been holding generally in the low 30s, so not much melting has
taken place today.
The wind has been busy today out of the north, with gusts
frequently reaching to around 25mph. A few gusts of 30-35mph
have been observed, with a peak of around 38mph occurring just
after 11am. The average speed for the day is around 14mph.
Visibility has been fairly steady at around 30-35 miles today.
The obstruction to the visibility has been due to distant virga
which has been ongoing all day.
The maximum temperature so far today is 34F degrees, this is
equal to the normal high of 34F. The minimum temperature so far
since midnight is 29F degrees, this is 12 degrees above the
normal low of 17F.
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Today’s Observations:
7 A.M.
Weather: Broken stratocumulus, overcast altostratus, virga distant NNE-
SSE and distant SSW-NW
Temperature: 29F; Dew Point: 29F; Relative Humidity: 98%
Wind: N @ 12G22 kts, peak wind N 30mph at 6:34 A.M.
Sea-level pressure: 1005.1 mb; 29.68 in. Hg: rising, then more rapidly
Visibility: 30 miles
6-hr Max temp: 31F
6-hr Min temp: 29F
24-hr Precip: 0.81 inches
24-hr Snowfall: 1.5 inches
Snow Depth: 1 inch
BHO SA 1155 E15 BKN 65 OVC 30 051/29/29/3612G22/968/ VIRGA DSNT NNE-SSE
AND DSNT SSW-NW PK WND 0126/34/ TOTAL NEW SNW PST 24 HRS 1.5 INS/ 8/52/
4/001 53014 6009/ 70081 10031 20029
10 A.M.
Weather: Broken stratocumulus, overcast altostratus, few breaks in
overcast distant NW-N, higher clouds visible distant NW-N
Temperature: 30F; Dew Point: 27F; Relative Humidity: 89%
Wind: N @ 15G25 kts, peak wind N 35mph at 9:28 A.M.
Sea-level pressure: 1007.9 mb; 29.76 in. Hg: rising, then more slowly
Visibility: 35 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E20 BKN 70 OVC 35 079/30/27/0115G25/976/ FEW BINOVC DSNT NW-N
HIER CLDS VSBL DSNT NW-N VIRGA DSNT NNE-SSE AND DSNT WNW-NNW PK WND
0130/28/ 8/52/ 51028
1 P.M.
Weather: Overcast stratocumulus, virga all quadrants
Temperature: 32F; Dew Point: 29F; Relative Humidity: 87%
Wind: N @ 12G25 kts
Sea-level pressure: 1009.4 mb; 29.81 in. Hg: rising, then more slowly
Visibility: 35 miles
6-hr Max temp: 34F
6-hr Min temp: 29F
6-hr Precip: Trace
6-hr Snowfall: Trace
Snow Depth: 1 inch
BHO SA 1755 E24 OVC 35 094/32/29/0112G25/981/ VIRGA ALQDS S-B58E28
TOTAL NEW SNW PST 6 HRS TRACE/ 8/5// 4/001 51015 6000/ 10034 20029
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SUMMARY FOR SUNDAY, JANUARY 28, 2024
TEMPERATURE (DEGREES F)
MAX…….35 NORMAL…..34
MIN…….31 NORMAL…..17
MEAN……33 NORMAL…..26
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………..+7
TOTAL DEPARTURE FOR THE MONTH…………………..+111 [+3.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………32 DEPARTURE……..-7
TOTAL HEATING UNITS FOR THE MONTH…………..961 DEPARTURE……-115
TOTAL HEATING UNITS FOR THE SEASON…………2856 DEPARTURE……-430
TOTAL HEATING UNITS LAST SEASON TO DATE…….2744 DEPARTURE……+112
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)……….E33 NNE @ 11:12 P.M.
VECTOR #1 (1-Sec)……….33 NNE @ 06:59 P.M.
VECTOR #2 (1-Sec)……….33 NE @ 10:21 P.M.
DAVIS #1……………….32 NNE @ 06:59 P.M.
DAVIS #2 ………………30 N @ 10:35 P.M.
RMY #1 (Instantaneous)…..35 NNE @ 11:12 P.M.
RMY #2 (Instantaneous)…..33 NE @ 07:08 P.M.
MERLIN…………………31 NE
RICHARDS (C5C) (Inst)……32 @ 11:12 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………23 NNE @ 10:22 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..20 @ 10:22 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..21 @ 10:22 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………21 NNE @ 10:22 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………20 NE @ 10:22 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..20 NNE @ 10:22 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..21 NE @ 10:22 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………20 @ 10:22 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……10.4 E [250 total miles]
VECTOR #1…………….10.2
VECTOR #2…………….10.9
DAVIS #1……………..10.6 E
DAVIS #2……………..10.4 E
RMY #1……………….10.4 E
RMY #2……………….10.7 E
RICHARDS (C5C)………..10.8
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.81 DEPARTURE…..+0.67
TOTAL PRECIPITATION FOR THE MONTH…………..9.16 DEPARTURE…..+5.07
TOTAL PRECIPITATION FOR THE YEAR (2024)……..9.16 DEPARTURE…..+5.07
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..1.5 DEPARTURE……+0.8
TOTAL SNOWFALL FOR THE MONTH……………….20.2 DEPARTURE……+3.6
TOTAL SNOWFALL FOR THE SEASON (2023-2024)……20.5 DEPARTURE…..-11.2
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PRELIMINARY CLIMATE SUMMARY FOR JANUARY 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
1/1 37/25/31/+2/0.00/0.0/296/54 15 N VEC1 14 N RMY 15
1/2 39/19/29/+1/0.00/0.0/550/100 17 WNW VEC1 17 WNW RMY 17
1/3 42/25/34/+6/0.00/0.0/347/63 20 WNW VEC1 21 WNW RMY 21
1/4 42/21/32/+4/T/T/237/43 37 NNW VEC1 36 NNW RMY 39
1/5 32/17/25/-3/0.00/0.0/542/98 40 NW VEC1 39 NW RMY 39
1/6 34/24/29/+1/0.11/0.2/022/04 36 E VEC1 36 E RMY 36
1/7 33/21/27/0/0.84/13.0/000/00 38 ENE VEC1 37 ENE RMY 42
1/8 32/21/27/0/0.00/0.0/406/73 28 NW VEC1 28 NW RMY 31
1/9 40/23/32/+5/0.98/T/000/00 46 SE VEC1 49 SE RMY 46
1/10 53/41/47/+20/1.90/0.0/201/36 70 SSE VEC1 69 SSE RMY 75
1/11 43/35/39/+12/0.00/0.0/162/29 45 WNW VEC1 43 WNW RMY 47
1/12 47/33/40/+13/0.00/0.0/533/95 29 SE VEC1 28 ESE RMY 28
1/13 57/36/47/+21/1.72/0.0/146/26 47 ESE VEC1 51 ESE RMY 49
1/14 39/22/31/+5/0.02/0.4/328/58 53 WNW VEC1 52 WNW RMY 54
1/15 31/17/24/-2/T/T/475/84 30 WNW VEC1 29 WNW RMY 30
1/16 34/19/27/+1/0.61/3.2/000/00 36 NW VEC1 33 NW* RMY 31*
1/17 25/13/19/-7/0.00/0.0/529/93 29 NW VEC1 28 W* RMY 27*
1/18 26/13/20/-6/0.00/0.0/069/12 30 WSW VEC1 30 WSW RMY 29
1/19 27/16/22/-4/T/T/000/00 31 NW VEC1 30 NW RMY 34
1/20 20/10/15/-11/0.05/0.7/172/30 30 NW VEC1 30 NW RMY 31
1/21 25/10/18/-8/0.00/0.0/513/89 30 NW VEC1 31 NW RMY 32
1/22 37/13/25/-1/0.00/0.0/416/72 35 SW VEC1 35 SW RMY 36
1/23 38/30/34/+8/0.07/0.5/006/01 30 WSW VEC1 30 WSW RMY 31
1/24 39/29/34/+8/0.40/0.7/000/00 26 S VEC1 26 S RMY 26
1/25 50/38/44/+18/0.18/0.0/088/15 35 SW VEC1 34 SSW RMY 36
1/26 40/35/38/+12/0.69/0.0/000/00 23 ESE VEC1 23 ESE RMY 23
1/27 36/33/35/+9/0.06/0.0/000/00 20 NNE VEC1 20 NNE RMY 19
1/28 35/31/33/+7/0.70/0.6/000/00 33 NNE VEC1 33 NNE RMY 35
1/29 The low since midnight is 29F, the daily normal low is 17F
* Reading impacted by icing
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JANUARY DAILY RECORDS TO DATE
1/13: RECORD PRECIPITATION OF 1.72 INS,
BEATS PREVIOUS RECORD OF 1.54 INS SET IN 1979
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR JANUARY 29
HIGH 66F IN 2002
LOW -11F IN 1888
PRECIP 1.79 INS. IN 2022
SNOWFALL 21.7 INS. IN 2022
PEAK GUST 72 MPH NW IN 1973
RECORDS FOR JANUARY 30
HIGH 60F IN 1914
LOW -8F IN 1948
PRECIP 1.12 INS. IN 1925
SNOWFALL 6.5 INS. IN 1986
PEAK GUST 76 MPH WNW IN 1962
TODAY’S REPORT PREPARED BY: Matt Douglas
