Monday, November 18, 2013

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

DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, NOVEMBER 18, 2013
ALL TIMES ARE IN EASTERN STANDARD TIME

SOME SIGNIFICANT RAINFALL EARLY TODAY
TEMPERATURES RISE TO MID-60’S

Light rain showers and some light drizzle began late Sunday but only
amounted to 0.06 inch by midnight with an additional 0.04 through
6:00 A.M. this morning.  However, moderate to occasionally heavy
rain and rain showers  fell during the hour from 6:00 to 7:00 A.M.
bringing an additional 0.22 inch for an event total of 0.32 inch
through 7:00 A.M.  An additional 0.03 gave an event total of
0.35 inch.

High temperatures have risen into the very mild mid-60’s early
this afternoon after an extremely mild morning low of 57F.

Today’s Observations:

7 A.M.
Weather: Broken stratus fractus, overcast nimbostratus, light rain,
moderate to heavy rain past hour becoming light rain at 6:54 A.M.,
thin fog
Temperature: 61F; Dew Point: 61F; Wind: SSW at 22G36 kts,
Wind Peak wind S at 37 kts at 6:37 A.M.,
Wind: Direction veering gradually,
Sea-level pressure: 29.57 ins. Hg, falling then more slowly
Visibility: 2 1/2 miles, light rain and fog
6-hr min temp: 58F
24-hr rainfall: 0.32 inch
BHO SA 1155 E6 BKN 18 OVC 21/2R-F 013/61/61/2022G36/957/ VSBY INCRSNG
R/R+ PST HR BCMG R-54 PK WND 1937/37/ WND GRDLY VEERING/ 8/72/ 56042
MANUAL 6N/A/ ASOS 60026 MANUAL 70032 ASOS 70032 10062 20058

10 A.M.
Weather: Scattered stratocumulus, broken altocumulus, few cumulus
and line of moderate cumulus distant NW-NNW, altocumulus castellanus
and floccus and lenticularis in vicinity S-SW, rain ended at
9:10 A.M.
Temperature: 58F; Dew Point: 47F; Wind: WSW at 18G24 kts,
Wind: Direction variable SSW-W
Sea-level pressure: 29.57 ins. Hg, rising slightly
Visibility: 60 miles, light distant haze, mountain in cloud
70 NW, virga distant E
3-hr precip: 0.03 inch
BHO SA 1455 55 SCT E95 BKN 60 015/58/47/2418G24/957/ FEW CU AND LINE
MDT CU DSNT NW-NNW FEW ACSL/ACC VC STN S-SW VIRGA DSNT E
WND 21V27 RE10/ 8/880 51002 MANUAL 6003/ ASOS 60004

1 P.M.
Weather: Clear, few distant small cumulus, cumulus fractus,
altocumulus layer distant E-SE, altocumulus castellanus distant
ENE-ESE, few altocumulus lenticularis NE and distant SSE-SSW
Temperature: 64F; Dew Point: 43F; Wind: WSW at 11 kts
Sea-level pressure: 29.56 ins. Hg, falling slightly
Visibility: 80 miles, light distant haze
6-hr max temp: 64F
6-hr precip: 0.03 inch
BHO SA 1755 CLR 80 009/64/43/2411/956/ FEW DSNT CUFRA/SML CU
AC LYR DSNT ENE-SSE ACC DSNT ENE-ESE FEW ACSL NE AND DSNT SSE-SSW
LGT DSNT HZ WND 20V27/ 8/180 56006 ASOS 60004 MANUAL 6003/
10064 20057

WEATHER SUMMARY FOR SUNDAY, NOVEMBER 17, 2013

TEMPERATURE (DEGREES F)
MAX…..59    NORMAL…..50
MIN…..42    NORMAL…..33
MEAN….51    NORMAL…..41

DEPARTURE FROM 30-YEAR NORMAL…………………+10
TOTAL DEPARTURE FOR THE MONTH………………….+8 [+0.3 DEGREE/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..14  DEPARTURE……..-10
TOTAL HEATING UNITS FOR THE MONTH………….351  DEPARTURE………-8
TOTAL HEATING UNITS FOR THE SEASON…………828  DEPARTURE……..-94
TOTAL HEATING UNITS LAST SEASON TO DATE…….791  DIFFERENCE…….+37

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………23 SSE AT 11:33 P.M.
AERO…………………..25 SSE AT 11:51 P.M. *
ASOS…………………..25 S   AT 11:33 P.M.
DAVIS………………….24 SSE AT 11:33 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY………………..18 SSE AT 11:20 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..17 S   AT 11:59 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….17 SSE AT 11:21 P.M.
AVERAGE WIND SPEED AND DIRECTION………..10.5 SSE
ASOS…………………9.9
DAVIS………………..9.5 SSE [150 degrees] * last of several occurrences…

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.32   DEPARTURE…………+0.16
ASOS…………..0.32
TOTAL PRECIPITATION FOR THE MONTH……….0.98   DEPARTURE…………-1.69
ASOS…………..0.96
TOTAL PRECIPITATION FOR THE YEAR……….43.99   DEPARTURE…………-2.45
ASOS…………..N/A**
**ASOS malfunctioned during storm on 2/8-9, leading to erroneous totals

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…….0.0     DEPARTURE………….-0.1
TOTAL SNOWFALL FOR THE MONTH………….0.2     DEPARTURE………….-0.5
TOTAL SNOWFALL FOR THE SEASON…………0.2     DEPARTURE………….-0.8

PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 2013 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane wind recording system gust
RMY:  RMY = R.M. Young wind gust recording system added 8/9/2011
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized

11/1  68/56/62/+16/0.10/0.0/012/02        60 SSW AERO N/A N/A    RMY 66
11/2  65/49/57/+11/0.00/0.0/296/48        22 WSW AERO N/A N/A    RMY 23
11/3  49/30/40/-6/0.06/T/135/22           23 N   AERO N/A N/A    RMY N/A
11/4  42/27/35/-10/0.00/0.0/588/96        24 NNE AERO N/A N/A    RMY 25
11/5  50/29/40/-5/0.00/0.0/487/80         16 SSW AERO N/A N/A    RMY 17
11/6  59/40/50/+5/0.00/0.0/419/69         30 SSW AERO 31 MPH SSW RMY 33
11/7  65/37/51/+6/0.31/0.0/079/13         33 SW  AERO 37 MPH SW  RMY 37
11/8  48/31/40/-4/T/T/0.0/421/70          37 WNW AERO 37 MPH WNW RMY 39
11/9  44/29/37/-7/0.00/0.0/366/61         25 WNW AERO 25 MPH WNW RMY 29
11/10 52/40/46/+2/0.08/0.0/108/18         31 WNW AERO 33 MPH WNW RMY N/A
11/11 51/36/44/+1/0.00/0.0/…/..         36 WNW AERO 37 MPH WNW RMY 37
11/12 48/24/36/-7/0.11/0.2/000/00         42 SW  AERO 43 MPH SW  RMY 43
11/13 35/21/28/-15/0.00/0.0/…/..        29 NW  AERO 30 MPH NW  RMY 30
11/14 49/26/38/-4/0.00/0.0/…/..         25 SW  AERO 25 MPH SW  RMY 28
11/15 59/38/49/+7/0.00/0.0/…/..         24 S   AERO 25 MPH S   RMY 26
11/16 59/40/50/+8/0.00/0.0/…/..         20 WSW AERO 20 MPH WSW RMY N/A
11/17 59/42/51/+10/…./…/000/00        23 SSE AERO 25 MPH SSE RMY N/A

11/18 morning low temp: 58F; the normal low is now 33F

DAILY RECORDS FOR NOVEMBER 2013
None so far.

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

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

RECORDS FOR NOVEMBER 19
HIGH 72 IN 1941
LOW 10 IN 1936
PRECIP 1.92 INCHES IN 1926
SNOWFALL 11.0 INS IN 1986
PEAK GUST 59e E IN 1945

TODAY’S REPORT PREPARED BY: Robert Skilling/Jonathan O’Brien