Thursday, November 24, 2016

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

DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, NOVEMBER 24, 2016
ALL TIMES ARE IN EASTERN STANDARD TIME

HAPPY THANKSGIVING FROM BHO!
SKIES BECOME OVERCAST, ONLY A TRACE OF FROZEN PRECIP. AT 10:00AM

Yesterday’s clear skies have turned overcast with the approaching warm
front.  Precipitation held off until just before the 10:00AM observation
when ice pellets began falling but ended within 15 minutes of their start.
Light winds varied NW-NE this morning, while temperatures steadily rose
from an overnight low of 29F.

7 A.M.
Weather: Broken stratocumulus, overcast stratus
Temperature: 31F; Dew Point: 25F; Wind: NNW at 5 kts,
Wind Speed: Light
Sea-level pressure: 30.35 ins. Hg, rising then falling
Visibility: 70 miles
6-hr Max temp: 32F
6-hr Min temp: 29F
24-hr precip: 0.00 in.
BHO SA 1155 E26 BKN 30 OVC 70 279/31/25/3305/035/ VIRGA SW WND LGT/
8/6// 51011 10032 20029

10 A.M.
Weather: Broken stratus fractus, overcast altostratus
Temperature: 35F; Dew Point: 27F; Wind: estimated NE at 2 kts,
Wind Speed: Light
Sea-level pressure: 30.35 ins. Hg, rising then falling
Visibility: 60 miles, except 40 miles WSW-NNE
3-hr precip: Trace
BHO SA 1455 E29 BKN 84 OVC 60IP- 279/35/27/E0402/035/ VSBY WSW-NNE 40
WND LGT/ 8/71/ 50000 MANUAL 600//

SUMMARY FOR WEDNESDAY, NOVEMBER 23, 2016

TEMPERATURE (DEGREES F)
MAX…..43   NORMAL…..48
MIN…..28   NORMAL…..32
MEAN….36   NORMAL…..40

DEPARTURE FROM 30-YEAR NORMAL……………………-3
TOTAL DEPARTURE FOR THE MONTH…………………..+65 [+2.6 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..29   DEPARTURE……….+3
TOTAL HEATING UNITS FOR THE MONTH………….443   DEPARTURE………-65
TOTAL HEATING UNITS FOR THE SEASON…………864   DEPARTURE……..-207
TOTAL HEATING UNITS LAST SEASON TO DATE…….837   DIFFERENCE……..+27

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….32 WNW AT 5:40 A.M.
ASOS……………………32 NW  AT 5:40 A.M.
DAVIS…………………..33 NW  AT 5:39 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY…………………24 WNW AT 4:49 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………24 NW  AT 5:40 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..23 WNW AT 5:40 A.M.
AVERAGE WIND SPEED AND DIRECTION………….13.9 WNW
ASOS………………….13.8
DAVIS…………………12.3 WNW [300 Deg.] * Last of several occurrences

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE……-0.16
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….1.38  DEPARTURE……-2.25
ASOS…………..1.44
TOTAL PRECIPITATION FOR THE YEAR……….35.74  DEPARTURE…..-11.66
ASOS………….36.14

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…….-1.2
TOTAL SNOWFALL FOR THE SEASON………….Trace  DEPARTURE…….-1.5

PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 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

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

11/24 Low temp since midnight is 29F; 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 24
HIGH 69 IN 1931
LOW 7 IN 1897
PRECIP 1.76 INCHES IN 1901
SNOWFALL 4.5 INS IN 1936
PEAK GUST 69 SSW IN 1959

RECORDS FOR NOVEMBER 25
HIGH 71 IN 1979
LOW 13 IN 1938
PRECIP 3.10 INCHES IN 1983
SNOWFALL 8.0 INS IN 1888
PEAK GUST 94e E IN 1950

TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle