BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY FRIDAY, NOVEMBER 29, 2013 ALL TIMES ARE IN EASTERN STANDARD TIME CHILLY, DRY, AND CALM The day started out with a low of 21F, which is several degrees below the 30-year average for the date. Despite plenty of sunshine, the afternoon high has only managed to reached the lower 30s. Like yesterday, today's average temperature will likely end up about 10 degrees below normal. Winds are much lower today compared to the past two days, and have generally been in the 5-15 mph range, with a few gusts this afternoon near 20 mph. November is ending on a chilly note, and the month appears as though it will end about 1.5 degrees below average. It appears as though the month will end with both a rainfall and snowfall deficit. Today's Observations: 7 A.M. Weather: Scattered altocumulus (2 levels), few cumulus distant NE-E-S, lower altocumulus mostly ENE-SE-SW, few altocumulus lenticularis SW-NW-ENE Temperature: 21F; Dew Point: 14F; Wind: WNW at 6 kts, Wind: Direction gradually veering (clockwise) over the past hour Sea-level pressure: 30.52 ins. Hg, rising Visibility: 75 miles 6-hr min temp: 21F BHO SA 1155 90 SCT 110 SCT 75 335/21/14/2906/052/ FEW CU DSNT NE-E-S LWR AC MSTLY ENE-SE-SW FEW ACSL SW-NW-ENE WND GRDLY VEERING PST HR/ 8/140 52016 10023 20021 10 A.M. Weather: Scattered altocumulus, few cumulus distant NE-ESE, altocumulus mostly distant ENE-SW and few altocumulus W-N, light distant haze Temperature: 28F; Dew Point: 14F; Wind: NW at 6 kts, Wind: Direction variable WNW-N Sea-level pressure: 30.57 ins. Hg, rising then rising more slowly Visibility: 75 miles, light distant haze BHO SA 1455 110 SCT 75 352/28/14/3206/057/ FEW CU DSNT NE-ESE AC MSTLY DSNT ENE-SW AND FEW AC W-N LGT DSNT HZ WND 29V35/ 8/140 51017 1 P.M. Weather: Scattered cumulus/cumulus fractus, scattered altocumulus, cumulus/ cumulus fractus all quadrants, altocumulus distant SE, light distant haze Temperature: 31F; Dew Point: 13F; Wind: WNW at 7 kts, Wind: Direction variable WSW-NNW Sea-level pressure: 30.55 ins. Hg, falling then rising Visibility: 75 miles, light distant haze 6-hr max temp: 33F BHO SA 1755 45 SCT 110 SCT 75 344/31/13/3007/055/ SML CU/CUFRA ALQDS FEW AC DSNT SE LGT DSNT HZ WND 26V33/ 8/140 55008 10033 20021 WEATHER SUMMARY FOR THURSDAY, NOVEMBER 28, 2013 TEMPERATURE (DEGREES F) MAX.....35 NORMAL.....45 MIN.....21 NORMAL.....30 MEAN....28 NORMAL.....38 DEPARTURE FROM 30-YEAR NORMAL.....................-10 TOTAL DEPARTURE FOR THE MONTH.....................-26 [-1.1 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............37 DEPARTURE........+10 TOTAL HEATING UNITS FOR THE MONTH.............667 DEPARTURE........+25 TOTAL HEATING UNITS FOR THE SEASON...........1144 DEPARTURE........-61 TOTAL HEATING UNITS LAST SEASON TO DATE......1086 DIFFERENCE.......+58 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY..................43 W AT 12:05 P.M. * AERO.......................46 W AT 4:30 A.M. ASOS.......................46 WNW AT 10:24 A.M. DAVIS......................44 WNW AT 1:10 P.M. RMY 45 FASTEST MILE FOR YESTERDAY....................34 WNW AT 1:01 P.M. * MAXIMUM 2-MINUTE ASOS AVERAGE.................35 W AT 12:06 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE................32 W AT 12:06 P.M. AVERAGE WIND SPEED AND DIRECTION............18.9 W ASOS.....................17.1 DAVIS....................16.1 W [278 degrees] * last of several occurrences... PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M... 0.00 DEPARTURE............-0.17 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........3.59 DEPARTURE............-0.85 ASOS..............3.60 TOTAL PRECIPITATION FOR THE YEAR..........46.60 DEPARTURE............-1.61 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.............-0.2 TOTAL SNOWFALL FOR THE MONTH.............0.2 DEPARTURE.............-1.8 TOTAL SNOWFALL FOR THE SEASON............0.2 DEPARTURE.............-2.1 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/+1/0.00/0.0/500/84 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/-15/0.00/0.0/591/100 29 NW AERO 30 MPH NW RMY 30 11/14 49/26/38/-4/0.00/0.0/536/91 25 SW AERO 25 MPH SW RMY 28 11/15 59/38/49/+7/0.00/0.0/393/67 24 S AERO 25 MPH S RMY 26 11/16 59/40/50/+8/0.00/0.0/363/62 20 WSW AERO 20 MPH WSW RMY N/A 11/17 59/42/51/+10/0.07/0.0/000/00 23 SSE AERO 25 MPH SSE RMY N/A 11/18 65/46/56/+15/0.28/0.0/400/69 40 SSW AERO 40 MPH S RMY N/A 11/19 46/28/37/-4/0.00/0.0/428/74 46 WNW AERO 46 MPH WNW RMY 46 11/20 40/25/33/-7/0.00/0.0/.../.. 23 NW AERO 22 MPH NW RMY 22 11/21 46/26/36/-4/0.00/0.0/.../.. 16 SW AERO 16 MPH SW RMY N/A 11/22 46/39/43/+3/0.22/0.0/.../.. 17 WSW AERO 18 MPH SW RMY 19 11/23 46/27/37/-2/0.00/0.0/.../.. 40 WNW AERO 44 MPH WNW RMY 48 11/24 27/17/22/-17/0.00/0.0/.../.. 53 NW AERO 59 MPH NW RMY 57 11/25 32/14/23/-16/0.00/0.0/.../.. 29 W AERO 29 MPH WNW RMY N/A 11/26 42/29/36/-2/0.13/T/000/00 25 SW AERO 27 MPH SW RMY 28 11/27 61/34/48/+10/2.23/0.0/000/00 63 SSE AERO 68 MPH SSE RMY 67 11/28 35/21/28/-10/0.00/0.0/.../.. 43 W AERO 46 MPH W RMY 45 11/29 morning low temp: 21F; the normal low is now 29F DAILY RECORDS FOR NOVEMBER 2013 11/27 - NEW RECORD MAXIMUM DAILY PRECIPITATION OF 2.23 INCHES; surpasses the previous record of 1.92 inches in 1898 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR NOVEMBER 29 HIGH 66 IN 2011 LOW 6 IN 1901 PRECIP 2.69 INCHES IN 1963 SNOWFALL 6.0 INS IN 2012 PEAK GUST 86 SSE IN 1963 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 TODAY'S REPORT PREPARED BY: Sean Fankhauser