BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, NOVEMBER 17, 2013 ALL TIMES ARE IN EASTERN STANDARD TIME CLOUDY WITH MILD TEMPERATURES TODAY The sky has been mostly cloudy today, with few breaks observed since early this morning. Despite the cloudy conditions, the temperature has warmed nicely to a well above average high of 57F so far through 1:00 P.M. The morning low of 42F was also well above average. After several days of very dry air and low dew points, more moisture has been present in the air today, with dew points over 40F throughout the day. Some much needed rainfall is expected tonight and tomorrow morning before a cold front passes by and returns us to dry weather. Winds have been steady but fairly light from the SE today, with no gusts over 20mph so far. Today's Observations: 7 A.M. Weather: Broken stratocumulus, broken altocumulus, patches of thin ground fog all quadrants Temperature: 45F; Dew Point: 42F; Wind: SE at 8 kts Sea-level pressure: 30.32 ins. Hg, rising then falling Visibility: 25 miles 6-hr min temp: 42F BHO SA 1155 E30 BKN 100 BKN 25 267/45/42/1308/032/ PTCHS THN GF ALQDS/ 8/570 50000 10048 20042 10 A.M. Weather: Broken stratocumulus, overcast altocumulus, patches of thin ground fog W-NNE Temperature: 49F; Dew Point: 44F; Wind: SE at 9 kts Sea-level pressure: 30.31 ins. Hg, falling slightly Visibility: 35 miles BHO SA 1455 E20 BKN 100 OVC 35 263/49/44/1409/031/ PTCHS THN GF W-NNE/ 8/570 56004 1 P.M. Weather: Broken stratocumulus (2 levels) Temperature: 57F; Dew Point: 47F; Wind: SSE at 11 kts Sea-level pressure: 30.24 ins. Hg, falling then falling more slowly Visibility: 35 miles, distant haze 6-hr max temp: 57F BHO SA 1755 E20 BKN 25 BKN 35 241/57/47/1511/024/ DSNT HZ/ 8/500 56026 10057 20045 WEATHER SUMMARY FOR SATURDAY, NOVEMBER 16, 2013 TEMPERATURE (DEGREES F) MAX.....59 NORMAL.....50 MIN.....40 NORMAL.....34 MEAN....50 NORMAL.....42 DEPARTURE FROM 30-YEAR NORMAL......................+8 TOTAL DEPARTURE FOR THE MONTH......................-2 [-0.3 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............15 DEPARTURE.........-8 TOTAL HEATING UNITS FOR THE MONTH.............337 DEPARTURE.........+2 TOTAL HEATING UNITS FOR THE SEASON............814 DEPARTURE........-84 TOTAL HEATING UNITS LAST SEASON TO DATE.......766 DIFFERENCE.......+48 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY..................20 WSW AT 5:34 A.M. AERO.......................20 WSW AT 5:34 A.M. ASOS.......................21 W AT 3:57 A.M. DAVIS......................20 WSW AT 3:56 A.M. RMY N/A FASTEST MILE FOR YESTERDAY....................17 W AT 3:55 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE.................17 W AT 4:03 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE................17 W AT 3:57 A.M. AVERAGE WIND SPEED AND DIRECTION............8.8 W ASOS.....................9.1 DAVIS....................8.0 WSW [250 degrees] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00 DEPARTURE............-0.15 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........0.66 DEPARTURE............-1.85 ASOS..............0.64 TOTAL PRECIPITATION FOR THE YEAR..........43.67 DEPARTURE............-2.61 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..............0.0 TOTAL SNOWFALL FOR THE MONTH.............0.2 DEPARTURE.............-0.4 TOTAL SNOWFALL FOR THE SEASON............0.2 DEPARTURE.............-0.7 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 morning low temp: 42F; 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 17 HIGH 74F IN 1928 LOW 10F IN 1924 PRECIP 1.92 INCHES IN 1920 SNOWFALL 1.0 INS IN 1980 PEAK GUST 61 SSE IN 2006 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 TODAY'S REPORT PREPARED BY: Jonathan O'Brien