Wednesday, October 28, 2015
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, OCTOBER 28, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME
SKIES DARKEN AHEAD OF RAIN THIS AFTERNOON
A colorful sunrise was on tap this morning as the sun
quickly faded behind clouds at the 7:00 AM EST observation.
Steady and sometimes gusty winds from the E have consistently
been gusting into the 20 knot range with building altocumulus
and altostratus.
By the 1:00 PM EST observation light rain showers had begun
with a ragged and broken layer of stratocumulus and overcast
stratus. Visibility had been reduced to just 20 miles with
a trace of rain recorded by the observation. Temperatures had
reached a peak of 55F with winds still gusting from the ESE
in the 20 knot range.
Today’s Observations:
7 A.M.
Weather: Broken altostratus, broken cirrostratus,
few stratocumulus and cumulus distant N-S, few altocumulus
lenticularis distant S-SW, patchy valley fog distant SW-N
Temperature: 46F; Dew Point: 41F; Wind: E at 15G20 kts,
Sea-level pressure: 30.48 ins. Hg, falling, then more slowly
Visibility: 60 miles, except 35 miles SW-N
6-hr Max temp: 46F
6-hr Min temp: 44F
24-hr precip: 0.00 in.
BHO SA 1155 E160 BKN 200 BKN 60 321/46/41/1015G20/048/
VSBY SW-N 35 MI FEW SC/CU DSNT N-S FEW ACSL DSNT S-SW
PTCHY VLY FG DSNT SW-N/ 8/816 55011 10046 20044
10 A.M.
Weather: Broken altocumulus, overcast altostratus,
few cumulus/stratocumulus in all directions, sun dimly visible
Temperature: 53F; Dew Point 41F; Wind: ESE at 16G21 kts
Sea-level pressure: 30.42 ins. Hg, falling, then more quickly
Visibility: 50 miles, except 30 miles SSW-N
BHO SA 1455 E120 BKN 160 OVC 50 301/53/41/1116G21/042/
VSBY SSW-N 30 MI FEW CU/SC ALQDS SUN DMLY VSBL/ 8/87/ 58020
1 P.M.
Weather: Light rain shower beginning at 12:46 PM EST,
broken stratocumulus, overcast stratus
Temperature: 52F; Dew Point 46F; Wind: ESE at 15G23 kts
Sea-level pressure: 30.31 ins. Hg, falling rapidly
Visibility: 20 miles, except 15 miles SSE, obscured by
light rain showers
6-hr max temp: 55F
6-hr min temp: 46F
6-hr precip: Trace
BHO SA 1755 E21 BKN 30 OVC 20RW- 265/52/46/1115G23/031/
RW-B46 VSBY SSE 15 MI PRESFR/ 8/6// 58036 MANUAL 6000/
10055 20046
SUMMARY FOR TUESDAY, OCTOBER 27, 2015
TEMPERATURE (DEGREES F)
MAX…..56 NORMAL…..57
MIN…..35 NORMAL…..39
MEAN….46 NORMAL…..48
DEPARTURE FROM 30-YEAR NORMAL…………………..-2
TOTAL DEPARTURE FOR THE MONTH………………….-16 [-0.8 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………0 DEPARTURE………..0
TOTAL COOLING UNITS FOR THE MONTH……………0 DEPARTURE……….-5
TOTAL COOLING UNITS FOR THE SEASON…………810 DEPARTURE……..+208
TOTAL COOLING UNITS LAST SEASON TO DATE…….595 DIFFERENCE…….+215
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..19 DEPARTURE……….+2
TOTAL HEATING UNITS FOR THE MONTH………….359 DEPARTURE……….+9
TOTAL HEATING UNITS FOR THE SEASON…………402 DEPARTURE………-90
TOTAL HEATING UNITS LAST SEASON TO DATE…….378 DIFFERENCE……..+24
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….15 SE AT 5:40 P.M.
ASOS……………………16 ESE AT 5:41 P.M.
DAVIS…………………..14 SE AT 5:40 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY…………………12 SSE AT 6:48 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………13 ESE AT 5:42 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..11 SSE AT 6:42 P.M.
AVERAGE WIND SPEED AND DIRECTION……………6.5 N
ASOS……………………6.4
DAVIS…………………. 5.7 SW [232 Deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…..0.00 DEPARTURE…..-0.15
ASOS……………0.00
TOTAL PRECIPITATION FOR THE MONTH………..1.11 DEPARTURE…..-2.95
ASOS……………1.09
TOTAL PRECIPITATION FOR THE YEAR………..35.25 DEPARTURE…..-7.89
ASOS…………….N/A ***
*** ASOS annual total not available due to erroneous readings
PRELIMINARY CLIMATE SUMMARY FOR OCTOBER CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY 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
10/1 55/51/53/-4/…./000/00 39 NE RMY N/A
10/2 51/47/49/-8/…./000/00 40 NE RMY 43
10/3 51/45/48/-8/…./000/00 38 NE RMY N/A
10/4 55/49/52/-4/0.00/474/68 35 E RMY 40
10/5 59/46/53/-3/T/125/18 21 NE RMY 20
10/6 68/43/56/+1/0.00/663/96 17 NW RMY 17
10/7 69/46/58/+3/0.00/640/93 20 W RMY 20
10/8 63/49/56/+2/0.00/678/99 21 S RMY N/A
10/9 68/50/59/+5/0.27/130/19 45 S RMY 49
10/10 59/44/53/-2/0.00/673/99 33 NNW RMY N/A
10/11 67/46/57/+4/0.00/582/86 26 SW RMY 28
10/12 76/50/63/+10/0.00/647/96 22 SSW RMY 24
10/13 70/55/63/+10/0.27/208/31 23 S RMY 24
10/14 66/46/56/+4/0.00/428/64 26 W RMY 29
10/15 60/41/51/-1/0.00/659/99 20 SW RMY 27
10/16 60/44/52/+1/T/471/71 31 W RMY 34
10/17 54/35/45/-6/T/482/73 30 WNW RMY 33
10/18 45/28/37/-14/0.00/480/73 24 NNW RMY 25
10/19 47/26/37/-13/0.00/648/99 25 SSW RMY 30
10/20 65/43/54/+4/0.00/…/.. 28 SW RMY 28
10/21 59/51/55/+5/0.01/…/.. 18 SSE RMY 21
10/22 71/51/61/+12/T/…/.. 31 W RMY 34
10/23 55/34/45/-4/0.00/…/.. 31 NNW RMY 34
10/24 46/33/40/-9/0.00/…/.. 15 SSE RMY N/A
10/25 59/44/52/+3/0.04/…/.. 29 N RMY 31
10/26 53/38/46/-2/0.00/…/.. 23 NNW RMY 20
10/27 56/35/46/-2/0.00/…/.. 15 SE RMY N/A
10/28 low since midnight is 44F; normal low is now 39F
DAILY RECORDS FOR OCTOBER 2015
-NONE SO FAR.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR OCTOBER 28
HIGH 81F IN 1919
LOW 23F IN 1914
PRECIP 2.46 INCHES IN 2006
SNOWFALL TRACE IN 1934,1957,1979
PEAK GUST 71 MPH SSW IN 1995
RECORDS FOR OCTOBER 29
HIGH 74F IN 1989
LOW 23F IN 1891
PRECIP 2.42 INCHES IN 2012
SNOWFALL 4.0 INCHES IN 2011
PEAK GUST 76 E IN 2012
TODAY’S REPORT PREPARED BY: Brian Fitzgerald
