BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, JUNE 23, 2019 ALL TIMES ARE IN EASTERN STANDARD TIME A WARM AND PARTLY CLOUDY SUMMER DAY ATOP GREAT BLUE HILL.... A quick shower left only a trace yesterday afternoon shortly following the 1 P.M. observation. Today we experienced fair weather and a visibility of 75 miles. Wind was northwesterly, at a speed around 15 mph. The highest gust seen today is 28 mph a couple minutes after 10 A.M. Temperature and rainfall amounts so far this month are very close to seasonal averages. The high so far today is 80F, 3 degrees above the daily maximum temperature. Our low since midnight was 59F, which is 3 the same as our normal minimum temperature. Today's Observations: 7 A.M. Weather: Scattered cirrostratus, few altocumulus N-SE Temperature: 67F; Dew Point: 52F; Wind: NW at 11G20 kts Sea-level pressure: 29.94 ins. Hg, rising then more slowly Visibility: 75 miles 6-hr Max temp: 67F 6-hr Min temp: 59F 24-hr Precip: Trace BHO SA 1155 250 SCT 75 139/67/52/3111G20/994/ FEW AC N-SE/ 8/055 51021 10067 20059 10 A.M. Weather: Scattered cirrus Temperature: 77F; Dew Point: 51F; Wind: NW at 7G16 kts Sea-level pressure: 29.90 ins. Hg, falling steadily Visibility: 75 miles 3-hr Precip: 0.00 ins. BHO SA 1455 250 SCT 75 126/77/51/3107G16/990/ 8/002 58013 1 P.M. Weather: Scattered cirrostratus Temperature: 80F; Dew Point: 52F; Wind: WNW at 11G16 kts Sea-level pressure: 29.84 ins. Hg, falling steadily Visibility: 75 miles 6-hr Max temp: 80F 6-hr Min temp: 67F 6-hr Precip: 0.00 ins. BHO SA 1755 250 SCT 75 106/80/52/3011G16/984/ 8/005 58020 10080 20067 SUMMARY FOR SATURDAY, JUNE 22, 2019 TEMPERATURE (DEGREES F) MAX.....77 NORMAL.....77 MIN.....56 NORMAL.....59 MEAN....67 NORMAL.....68 DEPARTURE FROM 30-YEAR NORMAL......................-1 TOTAL DEPARTURE FOR THE MONTH......................-2 [-0.3 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............0 DEPARTURE.........-1 TOTAL HEATING UNITS FOR THE MONTH..............33 DEPARTURE........-33 TOTAL HEATING UNITS FOR THE SEASON...........6252 DEPARTURE.......-117 TOTAL HEATING UNITS LAST SEASON TO DATE......5909 DIFFERENCE......+343 COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY...............2 DEPARTURE.........-2 TOTAL COOLING UNITS FOR THE MONTH..............34 DEPARTURE........-30 TOTAL COOLING UNITS FOR THE SEASON.............42 DEPARTURE........-46 TOTAL COOLING UNITS LAST SEASON TO DATE.......123 DEPARTURE........-81 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................33 NW AT 2:41 P.M. AERO.........................32 NW AT 2:44 P.M. ASOS.........................35 NW AT 2:41 P.M. DAVIS........................35 WNW AT 1:56 P.M. RMY 35 FASTEST MILE FOR YESTERDAY......................26 NW AT 2:46 P.M MAXIMUM 2-MINUTE ASOS AVERAGE...................24 NW AT 2:47 P.M MAXIMUM 2-MINUTE DAVIS AVERAGE..................25 W AT 2:46 P.M AVERAGE WIND SPEED AND DIRECTION.............12.0 WNW ASOS......................11.6 DAVIS.....................12.4 W [274 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M...Trace DEPARTURE......-0.12 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........3.48 DEPARTURE......+0.09 ASOS..............3.46 TOTAL PRECIPITATION FOR THE YEAR..........29.27 DEPARTURE......+3.22 ASOS.............29.19 PRELIMINARY CLIMATE SUMMARY FOR JUNE 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 06/01 71/54/63/+1/0.00/.../.. 21 E AERO 20 E RMY 18 06/02 75/51/63/+1/..../.../.. 23 S AERO 21 S RMY N/A 06/03 69/50/60/-2/..../.../.. 41 W AERO 39 W RMY 43 06/04 70/45/58/-5/0.00/.../.. 29 W AERO 23 W RMY N/A 06/05 81/57/69/+6/..../.../.. 33 SSW AERO 33 SSW RMY N/A 06/06 75/64/70/+6/..../.../.. 28 SSW AERO 28 SSW RMY N/A 06/07 80/59/70/+6/0.00/.../.. 23 S AERO 23 S RMY 22 06/08 78/57/68/+4/0.00/.../.. 23 ENE AERO 21 SW RMY 21 06/09 78/55/67/+3/0.00/.../.. 22 S AERO 21 S RMY 21 06/10 79/54/67/+2/..../.../.. 26 SSE AERO 25 SSE RMY 33 06/11 73/58/66/+1/..../.../.. 32 NW AERO 30 NW RMY 35 06/12 75/52/64/-1/..../.../.. 25 SSW AERO 25 S RMY 28 06/13 55/49/52/-13/..../.../.. 36 NE AERO 35 NE RMY 35 06/14 72/50/61/-5/0.00/.../.. 38 W AERO 39 W RMY 38 06/15 79/54/67/+1/0.00/.../.. 38 SSW AERO 41 SSW RMY 40 06/16 70/62/66/0/..../.../.. 32 SW AERO 35 SW RMY N/A 06/17 74/62/68/+1/..../.../.. 12 SSE AERO 18 NW RMY 17 06/18 71/62/67/0/..../.../.. 17*S AERO 17 S RMY 16 06/19 74/61/68/+1/..../.../.. 16 SSE AERO 20 SSE RMY 19 06/20 69/61/65/-3/..../.../.. 26 S AERO 26 S RMY 29 06/21 68/58/63/-5/..../.../.. 32 NW AERO 28 NW RMY 33 06/22 77/56/67/-1/..../.../.. 33 NW AERO 32 NW RMY 35 06/23 Low temp since midnight is 59F; normal low is 59F *Estimated DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR JUNE 23 HIGH 93F IN 1888 LOW 45F IN 1885 PRECIP 0.70 INS IN 2006 PEAK GUST 63 MPH SE IN 1972 (AGNES) RECORDS FOR JUNE 24 HIGH 91F IN 1914,1976,2013 LOW 40F IN 1932 PRECIP 2.80 INS IN 1929 PEAK GUST 54 MPH WNW IN 2010 TODAY'S REPORT PREPARED BY: Benjamin Turner