BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SATURDAY, NOVEMBER 20, 2021 ALL TIMES ARE IN EASTERN STANDARD TIME SUNRISE: 0641E SUNSET: 1618E AN EXCELLENT VISIBILITY DAY WITH COOL TEMPERATURES AND A LIGHT WESTERLY WIND.... Today we observed 85 miles for the average visibility with skies being partly cloudy at most. Wind is almost a non-factor as of 2 P.M., being light and variable from the west. The max gust earlier today was 20 mph very early on this morning. The high so far today is 44F, 5 degrees below the normal max of 49F. The low since midnight is 27F, 6 degrees below the normal low of 33F. -------------------------------------------------------------- Today's Observations: 7 A.M. Weather: Clear, few distant cumulus NE-SE-S, few distant cirrus NE-SE-S Temperature: 28F; Dew Point: 24F; Relative Humidity: 85% Wind: WNW @ 8G12kts Sea-level pressure: 1033.5 mb; 30.52 in. Hg: rising, then more rapidly 6-hr Max temp: 45F 6-hr Min temp: 27F 24-hr Precip: 0.00 ins. BHO SA 1155 CLR 80 335/28/24/3008G12/052/ FEW CU DSNT NE-SE-S FEW CI DSNT NE-SE-S/ 8/101 53021 10045 20027 10 A.M. Weather: Clear, few distant cumulus NE-SE, few distant altocumulus W, few distant cirrus SW-W Temperature: 36F; Dew Point: 23F; Relative Humidity: 42% Wind: NW @ 5G13kts, wind light Sea-level pressure: 1034.5 mb; 30.55 in Hg; rising unsteadily Visibility: 85 miles 3-hr Precip: 0.00 ins. BHO SA 1455 CLR 85 345/36/23/3105G13/055/ FEW CU DSNT NE-SE FEW AC DSNT W FEW CI DSNT SW-W WND LGT/ 8/171 52010 1 P.M. Weather: Scattered cirrus Temperature: 42F, Dew point: 21F; Relative Humidity: 42% Wind: S @ 5 kts Sea-level pressure: 1034.2 mb; 30.54 in Hg; falling unsteadily Visibility: 85 miles 6-hr Max temp: 44F 6-hr Min temp: 28F 6-hr Precip: 0.00 ins. BHO SA 1755 250 SCT 85 342/42/21/1905/054/ 8/005 57003 10044 20028 SUMMARY FOR FRIDAY, NOVEMBER 19, 2021 TEMPERATURE (DEGREES F) MAX.......51 NORMAL.....49 MIN.......32 NORMAL.....33 MEAN......42 NORMAL.....41 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL............... +1 TOTAL DEPARTURE FOR THE MONTH........................... +47 [+2.3 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022) TOTAL HEATING UNITS FOR YESTERDAY...............23 DEPARTURE........-1 TOTAL HEATING UNITS FOR THE MONTH..............355 DEPARTURE.......-48 TOTAL HEATING UNITS FOR THE SEASON.............682 DEPARTURE......-233 TOTAL HEATING UNITS LAST SEASON TO DATE........760 DEPARTURE...... -78 PEAK WIND GUST (MPH): Official (1-Sec AVG).......42 W @ 3:08 P.M. AEROVANE...................41 W @ 3:19 P.M. VECTOR #2 (Instantaneous)..44 @ 3:08 P.M. DAVIS #2 ..................40 W @ 1:19 P.M. RMY #2 (Instantaneous).....41 W @ 1:19 P.M. ASOS...........OUT OF SERVICE D/T RENOVATIONS VECTOR #1......OUT OF SERVICE D/T RENOVATIONS DAVIS #1.......OUT OF SERVICE D/T RENOVATIONS RMY #1.........OUT OF SERVICE D/T RENOVATIONS MERLIN.........OUT OF SERVICE D/T RENOVATIONS FASTEST MILE: CONTACTING ANEMOMETER/OFFICIAL..................27 W @ 3:08 P.M. MAXIMUM 2-MINUTE VECTOR #2 AVERAGE..............31 @ 3:09 P.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............31 WNW @ 3:09 P.M. MAXIMUM 2-MINUTE RMY #2 AVERAGE.................30 W @ 3:09 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE.......OUT OF SERVICE D/T RENOVATIONS MAXIMUM 2-MINUTE DAVIS #1 AVERAGE...OUT OF SERVICE D/T RENOVATIONS MAXIMUM 2-MINUTE VECTOR #1 AVERAGE..OUT OF SERVICE D/T RENOVATIONS MAXIMUM 2-MINUTE RMY #1 AVERAGE.....OUT OF SERVICE D/T RENOVATIONS AVERAGE WIND SPEED AND DIRECTION: CONTACTING/OFFICIAL....... 14.8 WNW [354 total miles] VECTOR #2................. 15.4 DAVIS #2.................. 15.3 NW RMY #2.................... 15.1 NW RMY #1..............OUT OF SERVICE D/T RENOVATIONS ASOS................OUT OF SERVICE D/T RENOVATIONS VECTOR #1...........OUT OF SERVICE D/T RENOVATIONS DAVIS #1............OUT OF SERVICE D/T RENOVATIONS PRECIPITATION (INCHES) THROUGH THIS MORNING (EST): TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.......0.00 DEPARTURE.....-0.14 TOTAL PRECIPITATION FOR THE MONTH.............1.71 DEPARTURE.....-0.99 TOTAL PRECIPITATION FOR THE YEAR.............56.56 DEPARTURE.....+9.96 SNOWFALL (INCHES) THROUGH THIS MORNING (EST): TOTAL SNOWFALL 24 HRS ENDING 7 A.M.............0.0 DEPARTURE.......0.0 TOTAL SNOWFALL FOR THE MONTH...................0.0 DEPARTURE......-0.7 TOTAL SNOWFALL FOR THE SEASON (2021-2022)......0.0 DEPARTURE......-1.4 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 11/01 59/41/50/+3/0.00/0.0/594/96 38 WNW AERO 39 WNW RMY 39 11/02 56/40/48/+1/0.00/0.0/247/40 25 SW AERO 25 SW RMY 26 11/03 51/35/43/-3/0.00/0.0/572/93 28 W AERO 25 W RMY 27 11/04 49/31/40/-6/0.00/0.0/446/73 17 NNE AERO 17 NNW RMY 16 11/05 49/32/41/-5/0.00/0.0/591/97 25 NW AERO 24 NW RMY 24 11/06 51/34/43/-2/0.00/0.0/595/98 18 SSW AERO 17 SW RMY 19 11/07 55/37/46/+1/0.00/0.0/514/85 17 W AERO 17 W RMY 16 11/08 60/38/49/+4/0.00/0.0/578/96 20 N AERO 18 N RMY 19 11/09 69/45/57/+13/0.00/0.0/582/97 21 W AERO 21 W RMY 22 11/10 60/44/52/+8/0.00/0.0/389/65 36 NW AERO 35 NW RMY 35 11/11 56/40/48/+5/0.00/0.0/501/84 26 SE AERO 28 SE RMY 27 11/12 61/45/53/+10/1.00/0.0/000/00 72 SSE AERO 78 SSE RMY 76 11/13 60/36/48/+5/0.32/0.0/556/94 53 SW AERO 53 SW RMY 54 11/14 47/33/40/-2/0.03/0.0/336/57 29 W AERO 28 W RMY 28 11/15 48/36/42/0/0.07/0.0/405/69 35 W AERO 36 W RMY 38 11/16 46/31/39/-3/0.00/0.0/.../.. 40 WNW AERO 41 WNW RMY 42 11/17 49/30/40/-1/0.00/0.0/.../.. 34 S AERO 36 S RMY 34 11/18 69/49/59/+18/0.00/0.0/.../.. 39 NW AERO 36 WNW RMY 42 11/19 51/32/42/+1/0.29/0.0/.../.. 42 W AERO 41 W RMY 41 11/20 The low since midnight is 27F, the daily normal low is 32F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR NOVEMBER 20 HIGH 72 IN 1953 LOW 9 IN 1894 PRECIP 2.78 INS IN 1988 SNOWFALL 3.0 INS IN 1897 PEAK GUST 73e S IN 1950 RECORDS FOR NOVEMBER 21 HIGH 69 IN 1931 LOW 10 IN 1888 PRECIP 3.41 INCHES IN 1950 SNOWFALL 4.0 INS IN 1929 PEAK GUST 69 NW IN 1989 TODAY'S REPORT PREPARED BY: Benjamin Turner