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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, OCTOBER 9, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME
BREEZY, WARM MORNING RESULTS IN RAIN SHOWERS
THIS AFTERNOON
Overnight, temperatures dipped to a slightly warming
than normal minimum of 50F, some 4 degrees above normal.
Temperatures quickly warmed after 1:00 AM EST this morning,
hitting 60F not long after 8:00 AM EST. Heavy rain showers
over portions of VT and NH were slowly approaching by the
10:00 AM EST observation.
By the 1:00 PM EST observation winds were exceptionally
gusty from the S with a peak gust of 45 MPH at 12:37 PM EST
officially so far. A maximum of 68F was recorded with showers
far off to the north and west.
Today’s Observations:
7 A.M.
Weather: Broken altocumulus, broken cirrostratus,
cumulus fractus E and SW drifting N
Temperature: 55F; Dew Point: 54F; Wind: S at 16G23 kts,
Sea-level pressure: 30.03 ins. Hg, falling, then more quickly
Visibility: 20 miles, thin fog in all directions
6-hr Max temp: 55F
6-hr Min temp: 50F
24-hr precip: 0.00 ins.
BHO SA 1155 E60 BKN 220 BKN 20 170/55/54/1716G23/003/
FEW CUFRA E AND SW DRFTNG N THN FG ALQDS/ 8/756 58012 10055 20050
10 A.M.
Weather: Broken altocumulus (two layer), few cumulus/cumulus
fractus in all directions
Temperature: 65F; Dew Point 57F; Wind: S at 16G25 kts,
Peak Wind: 26 knots S @ 9:27 AM EST
Sea-level pressure: 29.94 ins. Hg, falling rapidly
Visibility: 30 miles, except 20 miles W-NNE, thin fog
BHO SA 1455 E60 BKN 90 BKN 30 138/65/57/1816G25/994/
VSBY W-NNE 20 MI FEW CU/CUFRA ALQDS THN FG ALQDS
PRESFR PK WND 1926/27/ 8/750 58032
1 P.M.
Weather: Broken stratocumulus, broken altocumulus,
thin overcast of cirrostratus, breaks in overcast NW,
few cumulus E-N
Temperature: 67F; Dew Point: 56F; Wind: S at 22G32 kts
Peak Wind: 39 knots S @ 12:37 PM
Sea-level pressure: 29.82 ins. Hg, falling rapidly
Visibility: 20 miles, thin fog in all directions
6-hr Max: 68F
6-hr Min: 55F
6-hr precip: none
BHO SA 1755 E38 BKN 80 BKN 250 -OVC 20 099/67/56/1922G32/982/
FEW CU E-N BINOVC NW THN FG ALQDS PRESFR PK WND 1939/37/
8/836 56039 10068 20055
SUMMARY FOR THURSDAY, OCTOBER 8, 2015
TEMPERATURE (DEGREES F)
MAX…..63 NORMAL…..63
MIN…..49 NORMAL…..46
MEAN….56 NORMAL…..54
DEPARTURE FROM 30-YEAR NORMAL……………………+2
TOTAL DEPARTURE FOR THE MONTH…………………..-21 [-2.8 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……….-2
TOTAL COOLING UNITS FOR THE SEASON…………810 DEPARTURE……..+211
TOTAL COOLING UNITS LAST SEASON TO DATE…….587 DIFFERENCE…….+223
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………9 DEPARTURE……….-3
TOTAL HEATING UNITS FOR THE MONTH…………..95 DEPARTURE………+18
TOTAL HEATING UNITS FOR THE SEASON…………138 DEPARTURE………-82
TOTAL HEATING UNITS LAST SEASON TO DATE…….173 DIFFERENCE……..-35
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….21 S AT 10:47 P.M.
ASOS……………………22 S AT 10:48 P.M.
DAVIS…………………..21 S AT 10:48 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY……………….. 16 S AT 10:48 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………16 S AT 11:34 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..14 S AT 10:50 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..9.8 NNW
ASOS…………………..9.7
DAVIS………………… 8.3 NNW [333 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………..0.52 DEPARTURE…..-0.67
ASOS……………0.50
TOTAL PRECIPITATION FOR THE YEAR………..34.19 DEPARTURE…..-5.61
ASOS…………….N/A ***
*** ASOS annual total not available due to erroneous readings
PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER & 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
9/1 81/65/73/+5/0.00/766/97 20 SSW RMY 20
9/2 89/64/77/+9/0.00/732/93 20 SW RMY 21
9/3 85/66/76/+9/T/612/78 17 E RMY N/A TSTM
9/4 72/58/65/-2/0.00/297/38 31 ENE RMY N/A
9/5 77/55/66/-1/0.00/748/96 14 SW RMY 18
9/6 87/57/72/+5/0.00/753/97 21 SSW RMY 22
9/7 92/63/78/+12/0.00/727/94 23 WSW RMY 24
9/8 97/70/84/+18/0.00/693/90 22 WSW RMY 24
9/9 92/70/81/+15/0.00/683/89 30 SSW RMY 33
9/10 73/62/68/+3/0.32/000/00 29 NE RMY N/A
9/11 70/59/65/0/0.59/084/11 33 NE RMY N/A
9/12 75/58/67/2/0.02/380/50 18 SSE RMY 25
9/13 66/60/63/-1/0.42/000/00 25 E RMY N/A
9/14 70/53/62/-2/0.00/550/73 33 W RMY 35
9/15 82/56/69/+5/0.00/736/98 23 W RMY N/A
9/16 84/62/73/+10/0.00/711/95 17 NW RMY N/A
9/17 87/64/76/+13/0.00/723/97 17 SW RMY 16
9/18 86/64/75/+13/0.00/712/96 21 SSW RMY 21
9/19 80/62/71/+9/0.00/480/65 22 S RMY N/A
9/20 74/55/65/+3/T/552/75 24 S RMY N/A
9/21 65/50/58/-3/0.00/646/88 29 ENE RMY 30
9/22 67/55/61/+0/0.00/183/25 21 E RMY 21
9/23 72/50/61/+1/0.00/677/93 15 E RMY N/A
9/24 72/56/64/+4/0.00/696/96 22 E RMY 21
9/25 66/53/60/0/0.00/556/77 21 E RMY 20
9/26 63/49/56/-3/0.00/633/88 25 ENE RMY 25
9/27 71/46/59/+0/0.00/688/96 17 S RMY 18
9/28 81/57/69/+11/0.00/428/60 22 SSW RMY 24
9/29 82/65/74/+16/0.09/320/45 28 S RMY N/A
9/30 75/53/64/+6/2.44/000/00 47 S RMY 51 TSTM
10/1 55/51/53/-4/…./…/.. 39 NE RMY N/A
10/2 51/47/49/-8/…./…/.. 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/…/.. 35 E RMY 40
10/5 59/46/53/-3/T/…/.. 21 NE RMY 20
10/6 68/43/56/+1/0.00/…/.. 17 NW RMY 17
10/7 69/46/58/+3/0.00/…/.. 20 W RMY 20
10/8 63/49/56/+2/0.00/…/.. 21 S RMY N/A
10/9 low since midnight is 50F; normal low is now 45F
DAILY RECORDS FOR SEPTEMBER & OCTOBER 2015
**9/7 DAILY RECORD MAXIMUM TEMPERATURE OF 92F
TIES PREVIOUS RECORD SET IN 2007**
**9/8 DAILY RECORD MAXIMUM TEMPERATURE OF 97F
BREAKS PREVIOUS RECORD OF 93F SET IN 2007**
**9/8 DAILY RECORD HIGH MINIMUM TEMPERATURE OF 70F
BREAKS PREVIOUS RECORD OF 69F SET IN 1999**
**9/9 DAILY RECORD MAXIMUM TEMPERATURE OF 92F
BREAKS PREVIOUS RECORD OF 91F SET IN 2002**
**9/9 DAILY RECORD HIGH MINIMUM TEMPERATURE OF 70F
BREAKS PREVIOUS RECORD OF 69F SET IN 1999**
**9/17 DAILY RECORD MAXIMUM TEMPERATURE OF 87F
BREAKS PREVIOUS RECORD OF 86F SET IN 1915, 1941, AND 1991**
**9/18 DAILY RECORD HIGH MINIMUM TEMPERATURE OF 64F
TIES PREVIOUS RECORD SET IN 1992**
**9/30 DAILY RECORD PRECIP OF 2.44 INS BREAKS PREVIOUS
RECORD OF 1.93 INCHES SET IN 1946**
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR OCTOBER 9
HIGH 82F IN 2011
LOW 29F IN 1907,1937
PRECIP 2.54 INCHES IN 1976
SNOWFALL 0.2 INCHES IN 1888
PEAK GUST 81e MPH S IN 1976 (RECORD FOR MONTH)
RECORDS FOR OCTOBER 10
HIGH 85F IN 1949
LOW 27F IN 1929
PRECIP 2.02 INCHES IN 1998
SNOWFALL 6.8 INCHES IN 1979 (RECORD FOR MONTH)
PEAK GUST 59 MPH WNW IN 1958
TODAY’S REPORT PREPARED BY: Brian Fitzgerald
