Tuesday, November 17, 2015

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

DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, NOVEMBER 17, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME

TEMPS DIP INTO THE UPPER 20S OVERNIGHT,
DRY CONDITIONS CONTINUE WITH 1.71 INCH DEFICIT FOR THE MONTH

The coldest temperatures of the month so far came in overnight,
as our minimum thermometer dipped to a low of 28F just before
the 7:00 AM EST observation. Temperatures did not fall fast
enough yesterday to avoid another day of above normal conditions,
with a maximum temperature on Monday of 59F, 9 degrees above the
daily norm.

Another day without precipitation has increased our monthly
and annual deficit to 1.71 inches and 8.65 inches respectively.

By the 1:00 PM EST observation skies remained nearly the
same as they were all morning with just a few stratocumulus
distant to the NE-S. Over land, skies were completely clear
with excellent visibility- 80 miles in all directions. Temperatures
had not been able to crest the 50F degree mark like yesterday,
and had reached just 44F by observation time.
Today’s Observations:

7 A.M.
Weather: Clear, few stratocumulus distant NE-S
Temperature: 29F; Dew Point: 22F; Wind: NNW at 9 kts
Sea-level pressure: 30.53 ins. Hg, rising, then more quickly
Visibility: 80 miles
6-hr Max temp: 35F
6-hr Min temp: 28F
24-hr precip: none
BHO SA 1155 CLR 80 338/29/22/3309/053/ FEW SC DSNT NE-S/
8/500 53019 10035 20028

10 A.M.
Weather: Clear, few stratocumulus distant NE-S
Temperature: 40F; Dew Point 28F; Wind: N at 8 kts,
Sea-level pressure: 30.58 ins. Hg, rising, then more slowly
Visibility: 80 miles
BHO SA 1455 CLR 80 354/40/28/0108/058/ FEW SC DSNT NE-S/
8/500 51016

1 P.M.
Weather: Clear, few stratocumulus distant NE-S
Temperature: 44F; Dew Point 26F; Wind: estimated N at 3 kts
Wind Speed: Light
Sea-level pressure: 30.56 ins. Hg, rising, then falling and lower now
Visibility: 80 miles
6-hr max. temp. 44F
6-hr min. temp. 29F
BHO SA 1755 CLR 80 348/44/26/E0103/056/ FEW SC DSNT NE-S
WND LGT/ 8/500 58006 10044 20029
SUMMARY FOR MONDAY, NOVEMBER 16, 2015

TEMPERATURE (DEGREES F)
MAX…..59   NORMAL…..50
MIN…..36   NORMAL…..34
MEAN….48   NORMAL…..42

DEPARTURE FROM 30-YEAR NORMAL………………….+6
TOTAL DEPARTURE FOR THE MONTH………………..+117  [+7.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..17   DEPARTURE……….-6
TOTAL HEATING UNITS FOR THE MONTH………….219   DEPARTURE……..-116
TOTAL HEATING UNITS FOR THE SEASON…………673   DEPARTURE……..-225
TOTAL HEATING UNITS LAST SEASON TO DATE…….770   DIFFERENCE……..-97

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….25 NNW AT   4:02 P.M.
ASOS……………………29 N   AT   8:08 P.M.
DAVIS…………………..27 N   AT   8:07 P.M. RMY 29
FASTEST MILE FOR YESTERDAY…………………20 N   AT   8:07 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………21 N   AT   8:08 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..19 N   AT   8:08 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..11.7 WNW
ASOS…………………..10.8
DAVIS…………………..9.9 NNW [326 Deg.] * Last of several 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………..0.80  DEPARTURE…..-1.71
ASOS……………0.80
TOTAL PRECIPITATION FOR THE YEAR………..37.63  DEPARTURE…..-8.65
ASOS…………….N/A ***
*** ASOS annual total not available due to erroneous readings

PRELIMINARY CLIMATE SUMMARY FOR 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

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  71/44/58/+12/0.00/…/..              25 W   RMY 25
11/4  66/49/58/+13/0.00/…/..              22 SSW RMY N/A
11/5  72/51/62/+17/0.00/…/..              31 SW  RMY 36
11/6  71/60/66/+21/0.00/…/..              35 SSW RMY 38
11/7  64/46/55/+10/0.00/…/..              33 WNW RMY 35
11/8  54/39/47/+3/0.00/…/..               26 NW  RMY 30
11/9  59/38/49/+5/0.00/…/..               20 W   RMY 21
11/10 53/45/49/+5/…./000/00               28 NE  RMY N/A
11/11 48/43/46/+3/…./000/00               41 NE  RMY N/A
11/12 55/42/49/+6/…./000/00               28 S   RMY 30
11/13 57/41/49/+6/…./…/..               40 WSW RMY 47
11/14 45/31/38/-4/0.00/…/..               40 NW  RMY 47
11/15 51/31/41/-1/0.00/…/..               25 W   RMY 27
11/16 59/36/48/+6/0.00/…/..               25 NNW RMY 29

11/17 low since midnight is 28F; normal low is now 33F

DAILY RECORDS FOR NOVEMBER 2015

**11/6 DAILY RECORD MAXIMUM TEMPERATURE OF 71F
TIES PREVIOUS RECORD OF 71F SET IN 1959

**11/6 DAILY RECORD HIGH MINIMUM TEMPERATURE OF 60F
BREAKS PREVIOUS RECORD OF 58F SET IN 1938

**11/6 DAILY RECORD HIGH MINIMUM TEMPERATURE OF 60F
TIES PREVIOUS MONTHLY RECORD OF 60F SET ON
11/8/1996

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

RECORDS FOR NOVEMBER 17
HIGH 74 IN 1928
LOW 10 IN 1924
PRECIP 1.92 INCHES IN 1920
SNOWFALL 1.0 INS IN 1980
PEAK GUST 61 SSE IN 2006

RECORDS FOR NOVEMBER 18
HIGH 72 IN 1963
LOW 10 IN 1936
PRECIP 1.80 INS IN 1929
SNOWFALL 6.3 INS IN 1980
PEAK GUST 60 SW IN 1987

TODAY’S REPORT PREPARED BY: Brian Fitzgerald