Saturday, October 27, 2018

Agreement required — click “Accept & Continue” below to review and accept the Data Use & Privacy Policy

Access to this content requires acceptance of our Data Use & Privacy Policy.

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

DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, OCTOBER 27, 2018
ALL TIMES ARE IN EASTERN STANDARD TIME

NOR’EASTER BRINGS STEADY RAIN AND STRONG WINDS TO BLUE HILL…
STORM TOTAL RAINFALL 0.95 INCHES THROUGH 1 PM EST…

An intensifying nor’easter is moving up the East Coast today
bringing rain and strong winds to Southern New England. Light
rain began before sunrise at the Observatory and a total of
0.11 inches was measured at 7 AM EST. Light rain became
occasionally moderate during the morning, and an additional
0.84 inches was measured for the six hours ending at 1 PM EST.
The wind has been increased from the east all day with a
peak gust so far of 45 kts, 52 mph from the east at 1:39 PM.
The highest hourly average wind speed has been 31 mph during
the 1-2 PM EST hour. The visibility has dropped from about
8 miles early this morning to about 1/2-3/4 of a mile at
early afternoon as the fog has lowered and the rain intensity
has increased.
Today’s Observations:

7 A.M.
Weather: Light rain, scattered stratus fractus, broken
stratocumulus, overcast nimbostratus
Temperature: 42F; Dew Point: 42F; Wind: E at 18G26 kts,
Wind: Peak gust 26 kts, E at 6:47 AM EST
Sea-level pressure: 30.06 ins. Hg, increasing then decreasing
now lower
Visibility: 8 miles
6-hr Max temp: 42F
6-hr Min temp: 38F
24-hr Precip: 0.11 ins.
BHO SA 1155 3 SCT E20 BKN 65 OVC 8R- 178/42/42/0818G26/006/
PK WND 0826/47/ 8/52/ 58027 6011/ 70011 10042 20038

10 A.M.
Weather: Light rain and fog, broken stratus, overcast
nimbostratus
Temperature: 44F; Dew Point: 44F; Wind: E at 26G33 kts
Wind: Peak gust 33 kts, E at 9:52 AM
Sea-level pressure: 29.96 ins. Hg, falling then more quickly
Visibility: 5 miles
3-hr Precip: 0.23 ins.
BHO SA 1455 E7 BKN 20 OVC 5R-F 146/44/44/0826G33/996/
PK WND 0833/52/ 8/62/ 58032 6023/

1 P.M.
Weather: Moderate rain and fog, overcast nimbostratus
Temperature: 48F; Dew Point: 47F; Wind: ENE at 25G43 kts,
Wind: Peak gust 43 kts, ENE at 12:23 PM
Sea-level pressure: 29.82 ins. Hg, falling then more quickly
Visibility: 3/4 miles, variable 1/2 to 1 mile
6-hr Max temp: 48F
6-hr Min temp: 42F
6-hr Precip: 0.84 ins.
BHO SA 1755 –X E5 OVC 3/4VRF 099/48/47/0725G43/982/ F1
VSBY 1/2V1 PK WND 0743/23/ 8/62/ 58047 6084/ 10048 20042
SUMMARY FOR FRIDAY, OCTOBER 26, 2018

TEMPERATURE (DEGREES F)
MAX…..45 NORMAL…..57
MIN…..27 NORMAL…..39
MEAN….36 NORMAL…..48

DEPARTURE FROM 30-YEAR NORMAL………………….-12
TOTAL DEPARTURE FOR THE MONTH………………….-15 [-0.8 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..29 DEPARTURE……..+12
TOTAL HEATING UNITS FOR THE MONTH………….353 DEPARTURE……..+20
TOTAL HEATING UNITS FOR THE SEASON…………440 DEPARTURE……..-35
TOTAL HEATING UNITS LAST SEASON TO DATE…….216 DIFFERENCE……+224

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………0 DEPARTURE………..0
TOTAL COOLING UNITS FOR THE MONTH…………..11 DEPARTURE……….+6
TOTAL COOLING UNITS FOR THE SEASON…………874 DEPARTURE……..+272
TOTAL COOLING UNITS LAST SEASON TO DATE…….731 DIFFERENCE…….+143

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..20 NW AT 8:33 A.M. *
AERO…………………….19 NW AT 2:03 A.M. *
ASOS…………………….20 NW AT 1:48 A.M.
DAVIS……………………20 NW AT 1:55 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY………………….13 NW AT 1:53 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….13 WNW AT 8:43 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………14 NW AT 2:04 A.M.
AVERAGE WIND SPEED AND DIRECTION……………8.1 WNW
ASOS……………………7.4
DAVIS…………………..7.6 WNW [287 deg.] * Last of several occurrences…
**Davis malfunctioning

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.11 DEPARTURE……-0.05
ASOS…………..0.11
TOTAL PRECIPITATION FOR THE MONTH……….3.46 DEPARTURE……-0.45
ASOS…………..3.42
TOTAL PRECIPITATION FOR THE YEAR……….50.66 DEPARTURE……+7.85
ASOS………….52.34

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 65/53/59/+2/0.22/042/06 21 ENE AERO 18 SSW RMY N/A
10/02 64/53/59/+2/0.77/000/00 33 S AERO 32 S RMY 35 TSTM
10/03 60/52/56/0/0.33/000/00 18 NNE AERO 14 NNE RMY 14
10/04 69/57/63/+7/0.00/204/30 29 SSW AERO 29 SSW RMY 32
10/05 64/47/56/0/0.00/618/92 25 NE AERO 21 NE RMY 24
10/06 64/45/55/0/0.00/264/40 23 SSW AERO 23 SSW RMY 25
10/07 75/56/66/+11/0.05/072/11 28 NE AERO 24 ENE RMY 27
10/08 56/53/55/+1/0.03/000/00 22 ENE AERO 20 ENE RMY N/A
10/09 75/56/66/+12/0.00/204/31 26 WSW AERO 28 SW RMY 29
10/10 82/65/74/+20/0.00/480/73 24 WSW AERO 23 WSW RMY 25
10/11 70/56/63/+10/0.78/000/00 48 NNE AERO 47 NNE RMY 50
10/12 59/44/52/-1/0.31/174/27 32 NW AERO 32 NW RMY 33
10/13 49/40/45/-8/0.17/108/17 21 WNW AERO 20 WNW RMY 20
10/14 55/37/46/-6/0.00/120/19 21 W AERO 18 W RMY 21
10/15 66/44/55/+3/0.06/030/05 46 W AERO 46 W RMY N/A
10/16 56/41/49/-2/0.03/606/94 48 W AERO 48 W RMY N/A
10/17 60/39/50/-1/0.01/564/89 48 W AERO 50 W RMY 53
10/18 45/33/39/-12/…./…/.. 32 WNW AERO 35 WNW RMY 36
10/19 60/31/46/-4/…./…/.. 33 SSW AERO 36 SSW RMY 36
10/20 62/46/54/+4/…./…/.. 35 SSW AERO 37 SSW RMY 33
10/21 46/31/39/-11/…./…/.. 39 NNW AERO 41 NW RMY 41
10/22 50/27/39/-10/…./…/.. 24 W AERO 22 W RMY 21
10/23 53/40/47/-2/…./…/.. 29 WNW AERO 29 WNW RMY 29 TSTM
10/24 45/35/40/-9/…./…/.. 31 NW AERO 31 NW RMY 32
10/25 48/32/40/-9/…./…/.. 35 NW AERO 35 NW RMY 36
10/26 45/27/36/-12/…./…/.. 20 NW AERO 19 NW RMY N/A