Tuesday, November 3, 2015

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

DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, NOVEMBER 3, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME

ANOTHER DRY DAY, AS TEMPS RISE NEAR RECORD TERRITORY

Overnight, clear skies and light winds allowed the formation
of a thermal inversion, with temperatures dropping to 30F just
3.5 miles away and 600 feet lower at Norwood Memorial Airpot
(KOWD). Meanwhile, temperatures dipped to a minimum of 44F with
ASOS registering a quick 50F peak temperature at the 7:00 AM EST
observation, while it was 34F at KOWD during the same period.

Temperatures have risen steadily through the morning with
a forecast high near 70F. Today’s daily record maximum temperature
is 75F, set back in 1990.

By the 1:00 PM EST observation skies were nearly completely clear
with only a few cirrus along the horizon to the NNE-NE. Temperatures
were well above our daily normal high of 55F, with a maximum
temperatures of 69F recorded at the observation.
PRELIMINARY STATS FOR OCTOBER 2015

TEMPERATURE, Deg. F
Avg. Max. 59.9 [-0.4] Avg. Min. 43.1 [+0.2] Mean      51.5 [-0.1] Corrected mean: 51.1
Max. for month: 76 on 12th
Min. for month: 26 on 19th

COOLING DEGREE DAYS
Total cooling units: 0 [-5] Total for the season: 810 [+208] Total for last season: 595

HEATING DEGREE DAYS
Total heating units: 411 [-10] Total for the season: 454 [-109] Total for last season: 422

PRECIPITATION, Inches
Total: 2.69 [-2.00] Greatest in 24 hrs: 1.58 from 28th-29th

WIND, mph
Avg. uncorrected wind speed: 12.6
Avg. corrected wind speed: 12.9
Prevailing wind direction: NNW @ 13%
Peak gust and direction: 53 SSE on the 28th, S on the 29th

SUNSHINE:
Campbell-Stokes card minutes: n/a
Astronomical total minutes:   n/a

Today’s Observations:

7 A.M.
Weather: Scattered cirrus, few altocumulus distant WNW-NE,
inversion present, estimated top 500 feet over city N
Temperature: 47F; Dew Point: 41F; Wind: SW at 8 kts,
Sea-level pressure: 30.16 ins. Hg, rising, then more slowly
Visibility: 60 miles, light distant haze
6-hr Max temp: 50F
6-hr Min temp: 44F
24-hr precip: 0.00 ins.
BHO SA 1155 250 SCT 60 213/47/41/2208/016/
FEW AC DSNT WNW-NE INVSN PRSNT ESTMD TOP 5 HND OVR CTY N
LGT DSNT HZ ALQDS SUN DOGS/ 8/031 51005 10050 20044

10 A.M.
Weather: Clear, few altocumulus distant NNW-NNE
Temperature: 59F; Dew Point 42F; Wind: SSW at 9 kts
Sea-level pressure: 30.16 ins. Hg, rising, then falling but higher still
Visibility: 70 miles, light distant haze, thin fog distant NE
BHO SA 1455 CLR 70 215/59/42/2109/016/ FEW AC DSNT NNW-NNE
THN FG DSNT NE LGT DSNT HZ ALQDS/ 8/030 50002
1 P.M.
Weather: Clear, few cirrus distant NNE-NE
Temperature: 69F; Dew Point 43F; Wind: WSW @ 10 kts
Sea-level pressure: 30.11 ins. Hg, falling then more slowly
Visibility: 70 miles, light distant haze
6-hr max. temp. 69F
6-hr min. temp. 47F
BHO SA 1755 CLR 70 197/69/43/2510/011/ FEW CI DSNT NNE-NE
LGT DSNT HZ ALQDS/ 8/001 56018 10069 20047
SUMMARY FOR MONDAY, NOVEMBER 2, 2015

TEMPERATURE (DEGREES F)
MAX…..62   NORMAL…..55
MIN…..47   NORMAL…..37
MEAN….55   NORMAL…..46

DEPARTURE FROM 30-YEAR NORMAL………………….+9
TOTAL DEPARTURE FOR THE MONTH…………………+15  [+7.3 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..10   DEPARTURE……….-9
TOTAL HEATING UNITS FOR THE MONTH…………..23   DEPARTURE………-15
TOTAL HEATING UNITS FOR THE SEASON…………477   DEPARTURE……..-124
TOTAL HEATING UNITS LAST SEASON TO DATE…….476   DIFFERENCE………+1

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….24  W   AT  6:13 A.M.*
ASOS……………………25  W   AT  6:13 A.M.
DAVIS…………………..24  W   AT  5:32 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY…………………20  W   AT  6:39 A.M.*
MAXIMUM 2-MINUTE ASOS AVERAGE………………20  W   AT  6:44 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..18  W   AT  6:13 A.M.
AVERAGE WIND SPEED AND DIRECTION……………10.3 W
ASOS……………………10.0
DAVIS……………………9.1 W [277 Deg.] *ADDITIONAL PEAK GUST OR FASTEST MILE OCCURRENCES

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……….TRACE  DEPARTURE…..-0.31
ASOS……………0.00
TOTAL PRECIPITATION FOR THE YEAR………..36.83  DEPARTURE…..-7.25
ASOS…………….N/A ***
*** ASOS annual total not available due to erroneous readings

PRELIMINARY CLIMATE SUMMARY FOR OCTOBER & NOVEMBER 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/-4/0.03/000/00               39 NE  RMY N/A
10/2  51/47/49/-8/0.18/000/00               40 NE  RMY 43
10/3  51/45/48/-8/0.31/000/00               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/+4/0.00/306/47               28 SW  RMY 28
10/21 59/51/55/+5/0.01/039/06               18 SSE RMY 21
10/22 71/51/61/+12/T/149/23                 31 W   RMY 34
10/23 55/34/45/-4/0.00/541/84               31 NNW RMY 34
10/24 46/33/40/-9/0.00/000/00               15 SSE RMY N/A
10/25 59/44/52/+3/0.04/019/03               29 N   RMY 31
10/26 53/38/46/-2/0.00/636/100              23 NNW RMY 20
10/27 56/35/46/-2/0.00/531/81               15 SE  RMY N/A
10/28 64/44/54/+6/…./019/03               53 SSE RMY N/A
10/29 72/52/62/+15/…./257/41              53 S   RMY N/A
10/30 59/38/49/+2/0.00/…/..               33 WNW RMY 35
10/31 54/32/43/-4/0.00/…/..               18 SSW RMY N/A

11/1  59/45/52/+6/T/…/..                  30 SSW RMY 31
11/2  62/47/55/+9/0.00/…/..               24 W   RMY N/A

11/3 low since midnight is 44F; normal low is now 37F

DAILY RECORDS FOR OCTOBER AND NOVEMBER 2015

-NONE

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

RECORDS FOR NOVEMBER 3
HIGH 75 IN 1990
LOW 21 IN 1891
PRECIP 1.92 INCHES IN 1951
SNOWFALL 0.1 IN 1951
PEAK GUST 96e SSE IN 1951

RECORDS FOR NOVEMBER 4
HIGH 77 IN 1987
LOW 22 IN 1891
PRECIP 3.27 INCHES IN 1910
SNOWFALL 6.4 IN 1945
PEAK GUST 73 WNW IN 1965

TODAY’S REPORT PREPARED BY: Brian Fitzgerald