BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, NOVEMBER 12, 2016 ALL TIMES ARE IN EASTERN STANDARD TIME GUSTY WINDS CONTINUES INTO EARLY MORNING HOURS AS COLDER AIR ARRIVES TODAY... The peak gust overnight was 39 mph NW at 11:37 PM with two gust to the same speed occurring at 1:02 PM from the WNW and 3:38 PM from the NW yesterday. The sky was nearly completely clear much of the morning, then a few high thin cirrus clouds moved in without blocking the bright sunshine. Dew points have been down in the upper teens today, and the visibility has been excellent near 80 miles. 7 A.M. Weather: Clear, few stratocumulus offshore distant E-SE, few altocumulus distant WNW-N Temperature: 31F; Dew Point: 18F; Wind: NW at 9 kts Sea-level pressure: 30.20 ins. Hg, rising Visibility: 80 miles 6-hr Max temp: 34F 6-hr Min temp: 31F 24-hr precip: 0.00 in. BHO SA 1155 CLR 80 228/31/18/3109/020/ FEW SC OFFSHR DSNT E-SE FEW AC DSNT WNW-N/ 8/530 53033 10034 20031 10 A.M. Weather: Clear, few cumulus distant SE, few altocumulus ENE and distant WNW-NW, few cirrus distant W-NNE Temperature: 38F; Dew Point: 19F; Wind: NW at 10 kts Sea-level pressure: 30.23 ins. Hg, rising Visibility: 80 miles BHO SA 1455 CLR 80 238/38/19/3110/023/ FEW CU DSNT SE FEW AC ENE AND DSNT WNW-NW FEW CI DSNT W-NNE/ 8/131 50010 1 P.M. Weather: Thin scattered cirrus, few lower dense cirrus W-N Temperature: 44F; Dew Point: 18F; Wind: W at 10 kts Sea-level pressure: 30.18 ins. Hg, falling, then more quickly Visibility: 80 miles 6-hr Max. temp: 45F 6-hr Min. temp: 31F BHO SA 1755 250 -SCT 80 220/44/18/2610/018/ FEW LWR DNS CI W-N/ 8/001 58018 10045 20031 SUMMARY FOR FRIDAY, NOVEMBER 11, 2016 TEMPERATURE (DEGREES F) MAX.....59 NORMAL.....52 MIN.....35 NORMAL.....35 MEAN....47 NORMAL.....43 DEPARTURE FROM 30-YEAR NORMAL........................+4 TOTAL DEPARTURE FOR THE MONTH.......................+29 [+2.4 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............18 DEPARTURE..........-4 TOTAL HEATING UNITS FOR THE MONTH.............193 DEPARTURE.........-29 TOTAL HEATING UNITS FOR THE SEASON............614 DEPARTURE........-171 TOTAL HEATING UNITS LAST SEASON TO DATE.......573 DIFFERENCE........+41 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY...................39 NW AT 11:37 P.M. * ASOS........................43 NW AT 3:58 P.M. DAVIS.......................42 NW AT 3:58 P.M. RMY 45 FASTEST MILE FOR YESTERDAY.....................30 NW AT 1:17 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE..................29 NW AT 2:35 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE.................29 WNW AT 1:18 P.M. AVERAGE WIND SPEED AND DIRECTION.............18.7 NW ASOS......................17.8 DAVIS.....................16.3 W [281 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..........0.05 DEPARTURE......-1.67 ASOS..............0.07 TOTAL PRECIPITATION FOR THE YEAR..........34.41 DEPARTURE.....-11.08 ASOS.............34.77 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 Low temp since midnight is 31F; normal low is now 35F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR NOVEMBER 12 HIGH 74 IN 1909 LOW 18 IN 1926 PRECIP 3.25 INCHES IN 1947 SNOWFALL 8.1 INCHES IN 1987 PEAK GUST 79e MPH NW IN 1947 RECORDS FOR NOVEMBER 13 HIGH 66 IN 1931, 1964 LOW 14 IN 1920 PRECIP 1.96 INCHES IN 1982 SNOWFALL 4.6 IN 2004 PEAK GUST 77 S IN 1982 TODAY'S REPORT PREPARED BY: Mike Iacono