Monday, November 30, 2015

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

DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, NOVEMBER 30, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME

FIRST SNOWFALL OF THE SEASON ARRIVES THIS MORNING,
TRACE OF NEW SNOW FALLS BETWEEN 7:00 AND 8:00 AM

Snow showers backed in off the coast this morning,
bringing a quick trace of snow for the first time this
season. Temperatures were slow to warm this morning,
with an overnight low of 27F.

By the 1:00 PM EST observation mostly cloudy conditions
were present with a broken layer of stratocumulus overhead.
Temperatures were unable to break the 40 degree mark, with
a maximum temperature so far of 37F.

Today’s Observations:

7 A.M.
Weather: Broken stratocumulus, showers NE-SE
Temperature: 27F; Dew Point: 21F; Wind: N at 7 kts
Sea-level pressure: 30.49 ins. Hg, rising, then more quickly
Visibility: 70 miles, expect 10 miles NE-SE, obscured by showers
6-hr Max temp: 28F
6-hr Min temp: 27F
24-hr precip: 0.00 ins.
BHO SA 1155 E33 BKN 70 325/27/21/3507/049/ VSBY NE-SE 10 MI
SHWRS NE-SE/ 8/500 53016 10028 20027

10 A.M.
Weather: Broken stratocumulus, showers distant ENE-ESE
Temperature: 32F; Dew Point: 22F; Wind: N at 7 kts,
Sea-level pressure: 30.52 ins.Hg, rising then more slowly
Visibility: 40 miles, except 30 miles ENE-ESE, distant
showers and hazy
3-hr snowfall: Trace
3-hr precip: Trace
BHO SA 1455 E35 BKN 40 335/32/22/0107/052/ VSBY ENE-ESE 30 MI
SHWRS DSNT ENE-ESE HAZY NEW SNW PST 3 HRS TRACE/ 8/500 51010

1 P.M.
Weather: Broken stratocumulus
Temperature: 35F; Dew Point: 23F; Wind: estimated ENE at 5 kts,
Sea-level pressure: 30.47 ins. Hg, steady, then falling
Visibility: 60 miles, light distant haze
6-hr max. temp: 37F
6-hr min. temp: 27F
6-hr snowfall: trace
6-hr precip: trace
BHO SA 1755 E32 BKN 60 317/35/23/E0705/047/ LGT DSNT HZ ALQDS
WND LGT/ 8/500 56018 MANUAL 6000/ 10037 20027
SUMMARY FOR SUNDAY, NOVEMBER 29, 2015

TEMPERATURE (DEGREES F)
MAX…..42   NORMAL…..45
MIN…..28   NORMAL…..29
MEAN….35   NORMAL…..37

DEPARTURE FROM 30-YEAR NORMAL………………….-2
TOTAL DEPARTURE FOR THE MONTH………………..+155  [+5.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..30   DEPARTURE……….+2
TOTAL HEATING UNITS FOR THE MONTH………….515   DEPARTURE……..-155
TOTAL HEATING UNITS FOR THE SEASON…………969   DEPARTURE……..-264
TOTAL HEATING UNITS LAST SEASON TO DATE……1137   DIFFERENCE…….-168

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….17 NNW  AT   7:26 P.M.
ASOS……………………22 NNW  AT   7:26 P.M.
DAVIS…………………..20 N    AT   9:50 P.M. RMY 21
FASTEST MILE FOR YESTERDAY…………………14 N    AT   7:16 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………14 N    AT  10:08 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..13 N    AT   7:16 P.M.
AVERAGE WIND SPEED AND DIRECTION…………….9.2 NNW
ASOS…………………….9.5
DAVIS……………………7.7 N [345 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………..2.59  DEPARTURE……-2.02
ASOS……………2.61
TOTAL PRECIPITATION FOR THE YEAR………..39.42  DEPARTURE……-8.96
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/006/01                  30 SSW RMY 31
11/2  62/47/55/+9/0.00/476/77               24 W   RMY N/A
11/3  71/44/58/+12/0.00/616/100             25 W   RMY 25
11/4  66/49/58/+13/0.00/601/98              22 SSW RMY N/A
11/5  72/51/62/+17/0.00/281/46              31 SW  RMY 36
11/6  71/60/66/+21/0.00/109/18              35 SSW RMY 38
11/7  64/46/55/+10/0.00/029/04              33 WNW RMY 35
11/8  54/39/47/+3/0.00/591/98               26 NW  RMY 30
11/9  59/38/49/+5/0.00/577/96               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/…./385/65               40 WSW RMY 47
11/14 45/31/38/-4/0.00/425/72               40 NW  RMY 47
11/15 51/31/41/-1/0.00/241/41               25 W   RMY 27
11/16 59/36/48/+6/0.00/416/71               25 NNW RMY 29
11/17 45/28/37/-4/0.00/572/98               18 NNE RMY N/A
11/18 50/35/43/+2/0.00/575/99               17 SSE RMY N/A
11/19 55/38/47/+6/…./000/00               29 SSE RMY N/A
11/20 58/41/50/+10/…./416/72              43 SSE RMY N/A
11/21 46/35/41/+1/0.00/380/66               20 ENE RMY 21
11/22 45/35/40/+0/…./000/00               26 NW  RMY 28
11/23 40/25/33/-6/0.00/543/95               24 NW  RMY 29
11/24 42/23/33/-6/0.00/564/99               20 WSW RMY 19
11/25 46/31/39/+0/0.00/568/100              18 SSE RMY N/A
11/26 58/37/48/+10/0.00/…/..              33 S   RMY 35
11/27 63/48/54/+18/0.00/…/..              35 SW  RMY 38
11/28 55/38/47/+9/0.19/000/00               23 SW  RMY N/A
11/29 42/28/35/-2/0.00/…/..               17 NNW RMY 21

11/30 low since midnight is 27F; normal low is now 29F

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 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: Brian Fitzgerald