Wednesday, November 30, 2016

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

DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, NOVEMBER 30, 2016
ALL TIMES ARE IN EASTERN STANDARD TIME

NO ADDITIONAL RAIN YET TODAY, FOG ARRIVES BY EARLY AFTERNOON

Precipitation continued into yesterday evening giving us a total
of 0.46 in. for the day.  In addition to the rain, the passing
warm front brought gusting winds up to 45 MPH.  Temperatures
continued to rise through the day and hit a daily maximum of 57F
just before midnight.

By the 1:00PM observation today, fog had moved in leaving only
1-2 miles of visibility.  The 6-hour min. temperature of 45F
occurred at the 1:00PM ob, falling from a max. of 50F for the day
so far. Winds were out of the east again after shifting westerly
shortly after midnight.

7 A.M.
Weather: Broken altocumulus, broken altostratus, partial undercast
conditions NNE and SE-NW
Temperature: 49F; Dew Point: 48F; Wind: W at 9 kts
Sea-level pressure: 29.94 ins. Hg, rising then falling
Visibility: 70 miles, distant fog in all directions
6-hr Max temp: 46F
6-hr Min temp: 43F
24-hr precip: 0.46 in.
BHO SA 1155 E160 BKN 200 BKN 70 139/49/48/2809/994/ PARTIAL UNDERCAST
NNE AND SE-NW DSNT FG ALQDS/ 8/01/ 51020 MANUAL 70046 ASOS 70051
10056 20043

10 A.M.
Weather: Scattered altocumulus, overcast altostratus, fog NNW-NE,
patches of fog drifting below the summit
Temperature: 49F; Dew Point: 48F; Wind: N at 6 kts,
Wind Speed: Light
Sea-level pressure: 29.97 ins. Hg, rising, then more quickly
Visibility: 40 miles, except 3 miles NNW-NE, 10 miles ENE-ESE,
30 miles SE-SSW, and 10 miles NNW
BHO SA 1455 100 SCT E200 OVC 40 150/49/48/3606/997/ VSBY 3 NNW-NE
VSBY 10 ENE-ESE VSBY 30 SE-SSW VSBY 10 NNW FG NNW-NE PTCHS FG DRFTG
BLO SMT WND LGT/ 8/01/ 53011

1 P.M.
Weather: Fog
Temperature: 45F; Dew Point: 45F; Wind: ENE at 13G18 kts
Sea-level pressure: 29.94 ins. Hg, rising then falling
Visibility: 1 mile, except 2 miles SSW-NW
6-hr Max temp: 50F
6-hr Min temp: 45F
BHO SA 1755 W3 X 1F 139/45/45/0713G18/994/ VSBY 2 SSW-NW/
8//// 56011 10050 20045

SUMMARY FOR TUESDAY, NOVEMBER 29, 2016

TEMPERATURE (DEGREES F)
MAX…..57   NORMAL…..45
MIN…..37   NORMAL…..29
MEAN….47   NORMAL…..37

DEPARTURE FROM 30-YEAR NORMAL…………………..+10
TOTAL DEPARTURE FOR THE MONTH…………………..+74 [+2.4 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..18   DEPARTURE………-10
TOTAL HEATING UNITS FOR THE MONTH………….595   DEPARTURE………-75
TOTAL HEATING UNITS FOR THE SEASON………..1016   DEPARTURE……..-217
TOTAL HEATING UNITS LAST SEASON TO DATE…….969   DIFFERENCE……..+47

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….45 ESE AT 5:16 P.M.
ASOS……………………46 S   AT 5:31 P.M.
DAVIS…………………..45 ESE AT 5:16 P.M. RMY 47
FASTEST MILE FOR YESTERDAY…………………33 ESE AT 5:14 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………30 S   AT 5:25 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..30 ESE AT 5:18 P.M.
AVERAGE WIND SPEED AND DIRECTION………….16.7 ESE
ASOS………………….15.3
DAVIS…………………15.0 SE [140 Deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.46  DEPARTURE……+0.30
ASOS…………..0.51
TOTAL PRECIPITATION FOR THE MONTH……….1.97  DEPARTURE……-2.63
ASOS…………..2.09
TOTAL PRECIPITATION FOR THE YEAR……….36.33  DEPARTURE…..-12.04
ASOS………….36.79

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…….-2.1
TOTAL SNOWFALL FOR THE SEASON………….Trace  DEPARTURE…….-2.4

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/-4/0.05/T/000/00             15 NNE AERO 13 NNE RMY N/A
11/25 46/38/42/+3/0.08/0.0/000/00           24 SE  AERO 23 SE  RMY 25
11/26 45/36/41/+3/0.00/0.0/…/..           18 NW  AERO 17 NW  RMY 28
11/27 44/30/37/-1/0.00/0.0/…/..           26 W   AERO 26 WNW RMY 29
11/28 44/28/36/-2/0.00/0.0/…/..           22 WNW AERO 21 WNW RMY 22
11/29 57/37/47/+10/…./0.0/…/..          45 ESE AERO 47 SSE*RMY 47

11/30 Low temp since midnight is 43F; normal low is now 29F

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

RECORDS FOR NOVEMBER 30
HIGH 67 IN 2006
LOW 7 IN 1887, 1929
PRECIP 2.42 INCHES IN 1944
SNOWFALL 10.2 INS IN 1945
PEAK GUST 90 SSW IN 1963

RECORDS FOR DECEMBER 1
HIGH 70 IN 2001
LOW 3 IN 1887
PRECIP 1.46 INS. IN 1917
SNOW 2.0 INS. IN 1902
PEAK GUST 72 MPH NW IN 1964

TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle