Saturday, November 26, 2016

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

DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, NOVEMBER 26, 2016
ALL TIMES ARE IN EASTERN STANDARD TIME

LIGHT RAIN SHOWERS FRIDAY AFTERNOON BRING 0.08 INCHES
OF PRECIPITATION…PARTIAL UNDERCAST EARLY THIS MORNING
APPEARS AS DENSE FOG BRIEFLY CLEARS…MOSTLY CLOUDY
WITH SOME SUNSHINE AT MID-DAY TODAY…

Light rain showers on Friday afternoon brought a total
of 0.08 inches of measurable precipitation from 1 to 3 PM
yesterday. The clouds of the last few days continued early
today with dense fog shrouding the summit this morning. For
a short time around the 7 AM observation the dense fog
cleared away from the summit to the east and southeast to
reveal a thick undercast with the top of the fog layer about
one hundred feet below the summit. Later in the morning
breaks in the overcast appeared that were large enough to
provide some sunshine, though the clouds have moved back in
this afternoon. There has been no precipitation so far today,
though virga was briefly observed from a few clouds to the
SSW at 1 PM. Visibility has been highly variable from 1/8
mile earlier to 35-40 miles to the south this afternoon.

7 A.M.
Weather: Sky partly obscured in dense fog, overcast altocumulus,
few breaks in overcast all quadrants, partial undercast E-S
Temperature: 36F; Dew Point: 36F; Wind: NNW at 5 kts,
Wind Speed: Light
Sea-level pressure: 30.10 ins. Hg, falling, then more quickly
Visibility: 1/4 mile, variable 1/16 to 4 miles
6-hr Max temp: 41F
6-hr Min temp: 36F
24-hr precip: 0.08 in.
BHO SA 1155 -X E120 OVC 1/4VF 193/36/36/3405/010/ F1 FEW BINOVC
ALQDS VSBY 1/16V4 PARTIAL UNDERCAST E-S WND LGT/ 8/07/ 58006 70008
10041 20036

10 A.M.
Weather: Sky obscured in dense fog
Temperature: 39F; Dew Point: 38F; Wind: Calm
Sea-level pressure: 30.10 ins. Hg, falling, then rising
Visibility: 1/8 mile, except 2 1/2 miles SE
BHO SA 1455 W2 X 1/8F 196/39/38/0000/010/ VSBY SE 21/2/ 8//// 53003

1 P.M.
Weather: Scattered stratocumulus, broken altocumulus, few lower
stratocumulus NE-ESE and SW-W, few stratus fratus E, few higher
clouds visible, virga SSW
Temperature: 43F; Dew Point: 40F; Wind: N at 6 kts,
Wind Speed: Light
Sea-level pressure: 30.02 ins. Hg, falling, then more quickly
Visibility: 25 miles, except 12 miles NNW-E, 35 miles SSE-SSW, hazy
6-hr Max temp: 43F
6-hr Min temp: 36F
BHO SA 1755 70 SCT E110 BKN 25 167/43/40/3506/002/ FEW LWR SC NE-ESE
AND SW-W FEW STFRA E FEW HIR CLDS VSBL E-SE VIRGA SSW VSBY NNW-E 12
VSBY SSE-SSW 35 HAZY WND LGT/ 8/571 58029 10044 20036

SUMMARY FOR FRIDAY, NOVEMBER 25, 2016

TEMPERATURE (DEGREES F)
MAX…..46   NORMAL…..47
MIN…..38   NORMAL…..31
MEAN….42   NORMAL…..39

DEPARTURE FROM 30-YEAR NORMAL……………………+3
TOTAL DEPARTURE FOR THE MONTH…………………..+64 [+2.4 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..23   DEPARTURE……….-3
TOTAL HEATING UNITS FOR THE MONTH………….496   DEPARTURE………-64
TOTAL HEATING UNITS FOR THE SEASON…………917   DEPARTURE……..-207
TOTAL HEATING UNITS LAST SEASON TO DATE…….895   DIFFERENCE……..+22

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….24 SE  AT 2:30 P.M.
ASOS……………………23 SSE AT 2:30 P.M.
DAVIS…………………..24 SE  AT 2:30 P.M. RMY 25
FASTEST MILE FOR YESTERDAY…………………18 SE  AT 2:29 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………18 SSE AT 2:31 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..19 ESE AT 2:31 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..7.7 SE
ASOS…………………..7.2
DAVIS………………….6.2 E [94 Deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.08  DEPARTURE……-0.08
ASOS…………..0.09
TOTAL PRECIPITATION FOR THE MONTH……….1.51  DEPARTURE……-2.44
ASOS…………..1.58
TOTAL PRECIPITATION FOR THE YEAR……….35.87  DEPARTURE…..-11.85
ASOS………….36.23

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0  DEPARTURE…….-0.1
TOTAL SNOWFALL FOR THE MONTH…………..Trace  DEPARTURE…….-1.5
TOTAL SNOWFALL FOR THE SEASON………….Trace  DEPARTURE…….-1.8

PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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

11/1  55/29/42/-4/0.00/0.0/600/97           22 SSE AERO 22 S   RMY N/A
11/2  69/45/57/+11/0.00/0.0/425/69          24 SSW AERO 24 S   RMY 26
11/3  65/49/57/+11/0.01/0.0/025/04          38 W   AERO 41 W   RMY 38
11/4  56/35/46/+1/0.00/0.0/587/96           26 NW  AERO 26 NW  RMY 30
11/5  55/32/44/-1/0.00/0.0/250/41           24 W   AERO 23 W   RMY 24
11/6  49/39/44/-1/0.04/T/091/15             23 N   AERO 23 N   RMY 23
11/7  46/33/40/-5/0.00/0.0/423/70           21 N   AERO 21 N   RMY 20
11/8  64/36/50/+6/0.00/0.0/590/98           17 W   AERO 15 SSW RMY N/A
11/9  60/43/52/+8/T/0.0/090/15              22 NNW AERO 22 NW  RMY N/A
11/10 52/34/43/-1/0.00/0.0/507/85           28 SSW AERO 30 SSW RMY 31
11/11 59/35/47/+4/0.00/0.0/565/95           39 NW  AERO 44 NW  RMY 45
11/12 47/31/39/-4/0.00/0.0/569/96           38 NW  AERO 44 NW  RMY 23
11/13 59/37/48/+5/0.00/0.0/519/88           23 W   AERO 22 W   RMY N/A
11/14 66/44/55/+13/0.00/0.0/547/93          24 WSW AERO 22 WSW RMY 25
11/15 57/46/52/+10/1.23/0.0/000/00          32 ENE AERO 33 ENE RMY 35
11/16 57/45/51/+9/0.04/0.0/000/00           26 W   AERO 25 W   RMY 28
11/17 55/41/48/+7/0.00/0.0/169/29           25 WNW AERO 29 NW  RMY 29
11/18 60/38/49/+8/0.00/0.0/580/100          21 NNE AERO 22 N   RMY 23
11/19 53/40/47/+6/0.02/0.0/445/77           18 ENE AERO 18 ENE RMY N/A
11/20 46/29/38/-2/0.04/0.0/006/01           37 SW* AERO 40 SW  RMY N/A
11/21 36/28/32/-8/T/T/138/24                40 W   AERO 44 W   RMY 44
11/22 41/28/35/-5/0.00/0.0/…/..           35 W   AERO 37 W   RMY 36
11/23 43/28/36/-3/0.00/0.0/542/95           32 WNW AERO 33 WNW RMY N/A
11/24 41/29/35/-4/…./T/000/00             15 NNE AERO 13 NNE RMY N/A
11/25 46/38/42/+3/…./0.0/000/00           24 SE  AERO 23 SE  RMY 25

11/26 Low temp since midnight is 36F; normal low is now 31F

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

RECORDS FOR NOVEMBER 26
HIGH 66 IN 1979
LOW 6 IN 1938
PRECIP 2.22 INS IN 1888
SNOWFALL 3.0 INS IN 1974
PEAK GUST 78 SSE IN 1964

RECORDS FOR NOVEMBER 27
HIGH 68 IN 1896
LOW 5 IN 1932
PRECIP 1.92 INS IN 1898
SNOWFALL 16.0 INS IN 1898
PEAK GUST 68 NW IN 1997

TODAY’S REPORT PREPARED BY: Lizzy Suzedell / Mike Iacono