Thursday, September 29, 2016
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, SEPTEMBER 29, 2016
ALL TIMES ARE IN EASTERN STANDARD TIME
CHILLY TEMPERATURES AND GUSTY NE WINDS CONTINUE
Temperatures remained cool today with a max. of 55F by 1:0PM EST, 8F below the
normal of 67F. Low, overcast clouds prevented temperatures from rising much
higher than the overnight low of 52F. Strong NE winds persisted through today.
The peak gust so far is 29 kts (33 MPH) NE at 12:59am EST.
The updated US Drought Monitor shows no changes to the extreme drought in our
region. This week’s rain did little help to improve our conditions. Blue Hill
remains 1.71 in. of precip. below normal for September.
7 A.M.
Weather: Broken stratocumulus, few cirrocumulus in all directions
Temperature: 53F; Dew Point: 47F; Wind: NNE at 14G21 kts
Sea-level pressure: 30.42 ins. Hg, rising, then more quickly
Visibility: 70 miles, except 50 miles NE-ESE, distant fog NE-ESE
6-hr Max temp: 55F
6-hr Min temp: 52F
24-hr precip: 0.08 in.
BHO SA 1155 E19 BKN 70 303/53/47/0314G21/042/ FEW CC ALQDS VSBY NE-ESE 50
DSNT FG NE-ESE/ 8/509 53016 MANUAL 70008 ASOS 70009 10055 20052
10 A.M.
Weather: Broken stratocumulus, overcast stratus
Temperature: 55F; Dew Point: 47F; Wind: NE at 17G26 kts,
Peak Wind: 27 kts (31 MPH) NE at 8:57AM EST
Sea-level pressure: 30.46 ins. Hg, rising then falling
Visibility: 70 miles, except 40 miles NNE-S, distant fog NNE-S
BHO SA 1455 E14 BKN 20 OVC 70 315/55/47/0417G26/046/ VSBY NNE-S 40 DSNT FG NNE-S
PK WND 0427/57/ 8/6// 50012
1 P.M.
Weather: Overcast stratocumulus
Temperature: 54F; Dew Point: 48F; Wind: NE at 12G26 kts
Sea-level pressure: 30.48 ins. Hg, rising then falling
Visibility: 70 miles, except 60 miles NNE-S
6-hr Max. temp: 55F
6-hr Min. temp: 53F
BHO SA 1755 E20 OVC 70 322/54/48/0512G20/048/ VSBY NNE-S 60/
8/5// 50007 10055 20053
SUMMARY FOR WEDNESDAY, SEPTEMBER 28, 2016
TEMPERATURE (DEGREES F)
MAX…..59 NORMAL…..67
MIN…..52 NORMAL…..50
MEAN….56 NORMAL…..58
DEPARTURE FROM 30-YEAR NORMAL……………………-2
TOTAL DEPARTURE FOR THE MONTH…………………..+98 [+3.3 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………0 DEPARTURE……….-1
TOTAL COOLING UNITS FOR THE MONTH………….102 DEPARTURE………+43
TOTAL COOLING UNITS FOR THE SEASON…………894 DEPARTURE……..+298
TOTAL COOLING UNITS LAST SEASON TO DATE…….801 DIFFERENCE……..+93
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………9 DEPARTURE……….+1
TOTAL HEATING UNITS FOR THE MONTH…………..44 DEPARTURE………-57
TOTAL HEATING UNITS FOR THE SEASON………….54 DEPARTURE………-72
TOTAL HEATING UNITS LAST SEASON TO DATE……..42 DIFFERENCE……..+12
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….33 NNE AT 3:37 P.M.
ASOS……………………36 NNE AT 1:15 P.M.
DAVIS…………………..31 NNE AT 3:37 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY…………………22 NE AT 6:40 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………22 NE AT 11:34 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..21 NNE AT 3:53 P.M.
AVERAGE WIND SPEED AND DIRECTION………….15.6 NE
ASOS………………….14.8
DAVIS…………………13.5 NE [040 Deg.]
* Last of several occurrences
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.08 DEPARTURE……-0.06
ASOS…………..0.09
TOTAL PRECIPITATION FOR THE MONTH……….2.05 DEPARTURE……-1.71
ASOS…………..2.07
TOTAL PRECIPITATION FOR THE YEAR……….27.02 DEPARTURE…..-11.76
ASOS………….27.34
PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER 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
9/1 72/64/68/0/0.09/000/00 21 NNW AERO 16 NNW RMY 20
9/2 76/58/67/-1/0.00/738/94 23 ENE AERO 17 NE RMY 23
9/3 72/56/64/-3/0.00/368/47 16 E AERO 12 E RMY N/A
9/4 71/58/65/-2/0.00/740/95 28 NE AERO 21 NE RMY 27
9/5 73/57/65/-2/0.52/241/31 42 NNE AER0 33 NNE RMY 43
9/6 70/61/66/-1/0.54/046/06 32 N AERO 23 NNE RMY N/A
9/7 78/66/72/+6/0.05/339/44 21 NE* AERO 15 NE* RMY 21
9/8 79/65/72/+6/T/276/36 22 S AERO 15 S RMY 23
9/9 90/69/80/+14/T/421/55 23 W AERO 24 W RMY 25
9/10 82/71/77/+12/T/229/30 25 S AERO 18 S RMY 32
9/11 79/59/69/+4/0.10/365/48 39 WNW AERO 30 WNW RMY 43
9/12 76/53/65/0/0.00/749/99 18 SW* AERO 13 WNW RMY 19
9/13 81/57/69/+5/0.00/739/98 25 SSW AERO M RMY 26
9/14 87/58/73/+9/T/526/70 35 NNW AERO M RMY 35
9/15 67/52/60/-4/0.00/531/71 21 NE AERO M RMY 20
9/16 74/54/64/+1/0.00/567/76 23 SSE AERO M RMY 24
9/17 77/54/66/+3/0.00/676/91 28 S AERO M RMY 28
9/18 79/63/71/+9/T/133/18 30 SW AERO M RMY 33
9/19 73/67/70/+8/0.16/000/00 25 S AERO M RMY N/A
9/20 81/66/74/+12/0.00/316/43 16 WSW*AERO M RMY N/A
9/21 81/64/73/+12/T/541/74 20 WNW AERO M RMY 18
9/22 82/63/73/+12/0.00/700/96 23 S AERO M RMY 25
9/23 80/53/67/+7/0.16/152/21 32 NE AERO M RMY 32
9/24 66/48/57/-3/0.03/643/89 24 NW AERO M RMY 25
9/25 65/44/55/-5/0.00/698/97 31 NW AERO M RMY 32
9/26 68/43/56/-3/0.00/624/87 25 S AERO M RMY 25
9/27 69/57/63/+4/0.31/021/03 23 S AERO M RMY N/A
9/28 59/52/56/-2/0.08/…/.. 33 NNE AERO M RMY N/A
9/29 Low temp since midnight is 52F; normal low is now 49F
DAILY RECORDS FOR SEPTEMBER 2016
9/10/16: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 71F,
BREAKS PREVIOUS RECORD OF 69F SET IN 1915, 1931, AND 1989
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR SEPTEMBER 29
HIGH 85F IN 1952
LOW 28F IN 1914 (SEPTEMBER MINIMUM RECORD)
PRECIP 2.61 INCHES IN 1907
PEAK GUST 62 MPH S IN 2005
RECORDS FOR SEPTEMBER 30
HIGH 84F IN 1986
LOW 31F IN 1992
PRECIP 2.44 INCHES IN 2015
PEAK GUST 58 MPH SSE IN 1999
TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle
