BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY FRIDAY, NOVEMBER 25, 2016 ALL TIMES ARE IN EASTERN STANDARD TIME OVERCAST CONDITIONS CONTINUE TODAY WITH DRIZZLE The sky has remained overcast for a second consecutive day today, with no sunshine observed so far. Fog has been prevalent as well, but has been broken enough at times to see higher cloud layers. Rain showers yesterday evening left a total of 0.05 inches of rain at the summit. A trace of snow was recorded for yesterday due to some ice pellets observed mid-morning. Occasional light rain and drizzle has continued today, but no additional measurable rain has fallen. Temperatures have climbed slowly from a morning low of 38F to a high so far of 46F. Winds are very light again today as well, with a peak gust for the day so far of only 14mph, after just a 15mph peak gust yesterday. 7 A.M. Weather: Sky partially obscured with fog and light drizzle Temperature: 39F; Dew Point: 39F; Wind: ENE at 7 kts Sea-level pressure: 30.29 ins. Hg, rising then rising more slowly Visibility: 1/8 mile, except 1/16 mile NW-NNE, 1 mile ESE-S 6-hr Max temp: 41F 6-hr Min temp: 38F 24-hr precip: 0.05 in. 24-hr snowfall: Trace (ice pellets) BHO SA 1155 -X E2 BKN 20 OVC 1/8L-F 258/39/39/0707/029/ F5 PCPN VRY LGT NEW SNW PST 24 HRS TRACE IP VSBY NW-NNE 1/16 ESE-S 1/ 8/72/ 51008 MANUAL 70005 ASOS 70005 10041 20038 10 A.M. Weather: Light drizzle and fog, broken nimbostratus, overcast altostratus, stratus fractus all quadrants mostly drifting below summit Temperature: 42F; Dew Point: 42F; Wind: E at 8 kts Sea-level pressure: 30.28 ins. Hg, rising then falling Visibility: 1 miles, except 1/2 mile NNW-N, 3 miles E-S 3-hr precip: Trace BHO SA 1455 E20 BKN 100 OVC 1L-F 254/42/42/0908/028/ STFRA ALQDS MSTLY DRFTNG BLO SMT PCPN VRY LGT VSBY NNW-N 1/2 E-S 3/ 8/77/ 58004 MANUAL 600// 1 P.M. Weather: Light rain, broken stratus/stratus fractus, overcast nimbostratus, thin fog all quadrants, light drizzle became light rain past hour Temperature: 46F; Dew Point: 44F; Wind: SE at 7 kts Sea-level pressure: 30.21 ins. Hg, falling then falling more slowly Visibility: 8 miles 6-hr Max temp: 46F 6-hr precip: Trace BHO SA 1755 E10 BKN 25 OVC 8R- 229/46/44/1307/021/ THN FG ALQDS L-BCMG R- PST HR/ 8/72/ 56025 MANUAL 600// 10046 20039 SUMMARY FOR THURSDAY, NOVEMBER 24, 2016 THANKSGIVING DAY TEMPERATURE (DEGREES F) MAX.....41 NORMAL.....47 MIN.....29 NORMAL.....31 MEAN....35 NORMAL.....39 DEPARTURE FROM 30-YEAR NORMAL........................-4 TOTAL DEPARTURE FOR THE MONTH.......................+61 [+2.3 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............30 DEPARTURE..........+4 TOTAL HEATING UNITS FOR THE MONTH.............473 DEPARTURE.........-61 TOTAL HEATING UNITS FOR THE SEASON............894 DEPARTURE........-203 TOTAL HEATING UNITS LAST SEASON TO DATE.......869 DIFFERENCE........+25 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY...................15 NNE AT 3:38 A.M.* ASOS........................16 NE AT 3:39 A.M. DAVIS.......................14 NNE AT 3:25 A.M. RMY N/A FASTEST MILE FOR YESTERDAY.....................12 NNE AT 3:35 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE..................13 NE AT 3:39 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE.................11 N AT 3:29 A.M. AVERAGE WIND SPEED AND DIRECTION..............5.9 E ASOS.......................6.2 DAVIS......................5.6 NNE [018 Deg.] * Last of several occurrences PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.05 DEPARTURE......-0.11 ASOS..............0.05 TOTAL PRECIPITATION FOR THE MONTH..........1.43 DEPARTURE......-2.36 ASOS..............1.49 TOTAL PRECIPITATION FOR THE YEAR..........35.74 DEPARTURE.....-11.77 ASOS.............36.14 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M........Trace DEPARTURE.......-0.2 TOTAL SNOWFALL FOR THE MONTH..............Trace DEPARTURE.......-1.4 TOTAL SNOWFALL FOR THE SEASON.............Trace DEPARTURE.......-1.7 PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER CALENDAR DAY DATA DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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/-4/0.00/0.0/600/97 22 SSE AERO 22 S RMY N/A 11/2 69/45/57/+11/0.00/0.0/425/69 24 SSW AERO 24 S RMY 26 11/3 65/49/57/+11/0.01/0.0/025/04 38 W AERO 41 W RMY 38 11/4 56/35/46/+1/0.00/0.0/587/96 26 NW AERO 26 NW RMY 30 11/5 55/32/44/-1/0.00/0.0/250/41 24 W AERO 23 W RMY 24 11/6 49/39/44/-1/0.04/T/091/15 23 N AERO 23 N RMY 23 11/7 46/33/40/-5/0.00/0.0/423/70 21 N AERO 21 N RMY 20 11/8 64/36/50/+6/0.00/0.0/590/98 17 W AERO 15 SSW RMY N/A 11/9 60/43/52/+8/T/0.0/090/15 22 NNW AERO 22 NW RMY N/A 11/10 52/34/43/-1/0.00/0.0/507/85 28 SSW AERO 30 SSW RMY 31 11/11 59/35/47/+4/0.00/0.0/565/95 39 NW AERO 44 NW RMY 45 11/12 47/31/39/-4/0.00/0.0/.../.. 38 NW AERO 44 NW RMY 23 11/13 59/37/48/+5/0.00/0.0/519/88 23 W AERO 22 W RMY N/A 11/14 66/44/55/+13/0.00/0.0/547/93 24 WSW AERO 22 WSW RMY 25 11/15 57/46/52/+10/1.23/0.0/000/00 32 ENE AERO 33 ENE RMY 35 11/16 57/45/51/+9/0.04/0.0/000/00 26 W AERO 25 W RMY 28 11/17 55/41/48/+7/0.00/0.0/169/29 25 WNW AERO 29 NW RMY 29 11/18 60/38/49/+8/0.00/0.0/580/100 21 NNE AERO 22 N RMY 23 11/19 53/40/47/+6/0.02/0.0/445/77 18 ENE AERO 18 ENE RMY N/A 11/20 46/29/38/-2/0.04/0.0/006/01 37 SW* AERO 40 SW RMY N/A 11/21 36/28/32/-8/T/T/138/24 40 W AERO 44 W RMY 44 11/22 41/28/35/-5/0.00/0.0/.../.. 35 W AERO 37 W RMY 36 11/23 43/28/36/-3/0.00/0.0/.../.. 32 WNW AERO 33 WNW RMY N/A 11/24 41/29/35/-4/..../T/.../.. 15 NNE AERO 13 NNE RMY N/A 11/25 Low temp since midnight is 38F; normal low is now 31F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR NOVEMBER 25 HIGH 71 IN 1979 LOW 13 IN 1938 PRECIP 3.10 INCHES IN 1983 SNOWFALL 8.0 INS IN 1888 PEAK GUST 94e E IN 1950 RECORDS FOR NOVEMBER 26 HIGH 66 IN 1979 LOW 6 IN 1938 PRECIP 2.22 INS IN 1888 SNOWFALL 3.0 INS IN 1974 PEAK GUST 78 SSE IN 1964 TODAY'S REPORT PREPARED BY: Jonathan O'Brien