Saturday, October 26, 2019

| October 27, 2019 | Reply

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

DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, OCTOBER 26, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

MORNING FOG LEADS TO A FAIR WEATHER DAY
WITH LIGHT AND VARIABLE WIND….

We experienced fog this morning that kept visibility down
to a 1/16th mile. However, the fog dissipated by 10 A.M.,
and the visibility was 85 miles by the 1 P.M. observation.
A 1/100th inch was measured this morning, left in the gauge
by a light drizzle overnight. Wind has been variable throughout
the day, shifting from NW-E since 7 A.M.

The high so far today is 58F, a degree above the daily normal
maximum of 57F. The low since midnight is 47F, 8 degrees above
the normal low of 39F.

Today’s Observations:

7 A.M.
Weather: Fog
Temperature: 47F; Dew Point: 47F; Wind: NW at 8 kts
Sea-level pressure: 30.21 ins. Hg, rising then rising more slowly
Visibility: 1/16th mile, fog
6-hr Max temp: 50F
6-hr Min temp: 47F
24-hr Precip: 0.01 ins.
BHO SA 1155 X W3 1/16F 231/47/47/3108/021/ 8//// 70001 53019
10050 20047

10 A.M.
Weather: Scattered cumulus, broken cirrus
Temperature: 55F; Dew Point: 42F; Wind: N at 9G15 kts
Sea-level pressure: 30.24 ins. Hg, falling then rising
Visibility: 80 miles
BHO SA 1455 30 SCT E250 BKN 80 239/55/42/3609G15/024/ 8/102
50008

1 P.M.
Weather: Scattered cumulus, broken cirrostratus
Temperature: 55F; Dew Point: 41F; Wind: E at 4 kts,
Wind: Light and variable
Sea-level pressure: 30.24 ins. Hg, rising steadily
Visibility: 85 miles
6-hr Max temp: 58F
6-hr Min temp: 47F
BHO SA 1755 40 SCT E250 BKN 85 540/55/41/0804/024/ WND L/V/
8/108 52001 10058 20047

SUMMARY FOR FRIDAY OCTOBER 25, 2019

TEMPERATURE (DEGREES F)
MAX…..64   NORMAL…..57
MIN…..47   NORMAL…..40
MEAN….56   NORMAL…..49

DEPARTURE FROM 30-YEAR NORMAL…………………+7
TOTAL DEPARTURE FOR THE MONTH………………..+31 [+1.0 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………….9  DEPARTURE………-8
TOTAL HEATING UNITS FOR THE MONTH…………..280  DEPARTURE……..-36
TOTAL HEATING UNITS FOR THE SEASON………….373  DEPARTURE……..-85
TOTAL HEATING UNITS LAST SEASON TO DATE……..410  DEPARTURE……..-37

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………….0  DEPARTURE……….0
TOTAL COOLING UNITS FOR THE MONTH…………….2  DEPARTURE………-3
TOTAL COOLING UNITS FOR THE SEASON………….682  DEPARTURE……..+80
TOTAL COOLING UNITS LAST SEASON TO DATE……..874  DEPARTURE…….-192

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..20 WSW  AT  2:05 A.M.
AERO…………………….21 SW   AT 12:42 A.M.
ASOS…………………….21 SW   AT 12:45 A.M.
DAVIS……………………21 SW   AT 12:42 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY………………….16 SW   AT 12:45 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….16 SW   AT  1:00 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………16 SW   AT 12:42 A.M.
AVERAGE WIND SPEED AND DIRECTION…………….7.2 N
ASOS…………………….7.6
DAVIS……………………7.7 NW [315 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.01  DEPARTURE……-0.14
ASOS…………..0.02
TOTAL PRECIPITATION FOR THE MONTH……….5.05  DEPARTURE……+1.30
ASOS…………..5.32
TOTAL PRECIPITATION FOR THE YEAR……….43.47  DEPARTURE……+0.63
ASOS………….43.55

PRELIMINARY CLIMATE SUMMARY FOR OCTOBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/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

10/01  67/52/60/+3/0.06/…/..               28 SW  AERO 25 SSW RMY 29
10/02  74/49/62/+5/0.42/…/..               30 ENE AERO 25 ENE RMY 28
10/03  51/46/49/-7/…./…/..               28 ENE AERO 26 ENE RMY N/A
10/04  59/40/50/-6/…./…/..               38 NNW AERO 38 NNW RMY 38
10/05  58/35/47/-9/0.00/…/..               21 N   AERO 18 SSW RMY N/A
10/06  65/44/55/0/0.00/…/..                36 SSW AERO 35 SSW RMY N/A
10/07  77/57/67/+12/0.12/…/..              47 SSW AERO 46 SSW RMY 49
10/08  60/52/56/+2/T/…/..                  22 NE  AERO 18 NW  RMY N/A
10/09  55/49/52/-2/…./…/..               43 NE  AERO 37 NE  RMY 44
10/10  54/47/51/-3/…./…/..               41 NE  AERO 37 NE  RMY 42
10/11  52/48/50/-3/…./000/00               41 NE  AERO 39 NE  RMY 41
10/12  52/49/51/-2/…./…/..               39 NE  AERO 37 NE  RMY N/A
10/13  66/48/57/+4/…./…/..               18 WNW AERO 17 WNW RMY 18
10/14  67/51/59/+7/…./…/..               18 WSW AERO 17 WSW RMY N/A
10/15  61/43/52/0/…./…/..                18 NNW AERO 17 NNW RMY N/A
10/16  61/45/53/+2/…./…/..               58 ESE AERO 58 ESE RMY N/A
10/17  60/46/53/+2/…./…/..               61 E   AERO 63 E   RMY N/A
10/18  57/41/49/-2/…./…/..               29 WNW AERO 32 W   RMY 32
10/19  58/36/47/-3/…./…/..               18 NW  AERO 18 NW  RMY 19
10/20  60/43/52/+2/T/…/..                  14 NE  AERO 16 NE  RMY N/A
10/21  59/49/54/+4/0.01/…/..               25 E   AERO 21 NE  RMY 23
10/22  58/47/53/+4/…./…/..               29 E   AERO 28 E   RMY 23
10/23  65/48/57/+8/…./…/..               35 W   AERO 35 W   RMY 36
10/24  67/43/55/+6/…/…/..                28 SSW AERO 38 SSW RMY 29
10/25  64/47/56/+7/…/…/..                20 WSW AERO 21 SW  RMY N/A

10/26 The low since midnight is 47F, normal daily minimum is 39F

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

RECORDS FOR OCTOBER 26
HIGH 80F IN 1963
LOW 24F IN 1933
PRECIP 1.72 INCHES IN 1894
SNOW 3.0 INCHES IN 1962
WIND 59 MPH SSE IN 1967

RECORDS FOR OCTOBER 27
HIGH 83F IN 1963
LOW 21F IN 1936
PRE 1.79 INCHES IN 1886
SNOW 2.5 INCHES IN 2011
WIND 54 MPH WNW IN 1968

TODAY’S REPORT PREPARED BY: Benjamin Turner

Category: Daily Discussions

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