BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, JUNE 22, 2019 ALL TIMES ARE IN EASTERN STANDARD TIME SUNNY AND SEASONABLE WITH SOME AFTERNOON  THUNDERSTORMS.... Today we measured 0.10 inches of rain that fell yesterday afternoon. Visibility has been 80 miles since this morning, but is obscured by distant rainfall. Towering cumulus have been observed following the 10 A.M. observation, and lightning was seen to the southeast following noontime. Wind has remained northwesterly, but has picked up since this morning. The highest gust seen today of 30 mph occurred shortly after 1 P.M. The high so far today is 77F, the same as the daily maximum temperature. Our low since midnight was 56F, which is 3 degrees below our normal minimum temperature of 59F.     Today's Observations: 7 A.M. Weather: Scattered cirrostratus Temperature: 64F; Dew Point: 52F; Wind: WNW at 8G17 kts Sea-level pressure: 29.78 ins. Hg, rising steadily Visibility: 80 miles 6-hr Max temp: 64F 6-hr Min temp: 56F 24-hr Precip: 0.00 ins. BHO SA 1155 250 SCT 80 086/64/52/2908G17/978/ FEW AC NE-S/ 8/068 70010 53016 10064 20056 10 A.M. Weather: Scattered altocumulus, broken cirrostratus Temperature: 72F; Dew Point: 61F; Wind: WNW at 7G18 kts Sea-level pressure: 29.77 ins. Hg, falling steadily Visibility: 80 miles 3-hr Precip: 0.00 ins. BHO SA 1455 110 SCT E250 BKN 80 082/72/61/2907G18/977/ FEW CU ALQDS/ 8/168 55004 1 P.M. Weather: Broken towering cumulus and cirrostratus, distant lightning and cumulonimbus to the SE Temperature: 76F; Dew Point: 53F; Wind: NNW at 16G22 kts Sea-level pressure: 29.75 ins. Hg, falling steadily Visibility: 70 miles, virga in all directions 6-hr Max temp: 77F 6-hr Min temp: 64F 6-hr Precip: 0.00 ins. BHO SA 1755 E70 BKN 250 BKN 70 077/76/53/3316G22/975/ TCU MVNG NE-S DSNT LTG SE VIRGA ALQDS/ 8/208 58005 10077 20064 SUMMARY FOR FRIDAY, JUNE 21, 2019 TEMPERATURE (DEGREES F) MAX.....68   NORMAL.....77 MIN.....58   NORMAL.....59 MEAN....63   NORMAL.....68 DEPARTURE FROM 30-YEAR NORMAL......................-5   TOTAL DEPARTURE FOR THE MONTH......................-1 [-0.2 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............2   DEPARTURE.........+1 TOTAL HEATING UNITS FOR THE MONTH..............33   DEPARTURE........-32 TOTAL HEATING UNITS FOR THE SEASON...........6252   DEPARTURE.......-116 TOTAL HEATING UNITS LAST SEASON TO DATE......5909   DIFFERENCE......+343 COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY...............0   DEPARTURE.........-4 TOTAL COOLING UNITS FOR THE MONTH..............32   DEPARTURE........-27 TOTAL COOLING UNITS FOR THE SEASON.............40   DEPARTURE........-43 TOTAL COOLING UNITS LAST SEASON TO DATE.......122   DEPARTURE........-82 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................32 NW  AT 5:38 P.M.                    AERO.........................28 NW  AT 5:37 P.M.                    ASOS.........................33 NW  AT 5:39 P.M.                    DAVIS........................33 WNW AT 5:38 P.M. RMY 33 FASTEST MILE FOR YESTERDAY......................19 NW  AT 5:41 P.M MAXIMUM 2-MINUTE ASOS AVERAGE...................21 NW  AT 5:40 P.M MAXIMUM 2-MINUTE DAVIS AVERAGE..................21 WNW AT 5:39 P.M AVERAGE WIND SPEED AND DIRECTION..............9.6 NW                    ASOS......................10.4                    DAVIS.....................10.1 NW [318 deg.]   PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.10  DEPARTURE......-0.03                          ASOS..............0.10 TOTAL PRECIPITATION FOR THE MONTH..........3.48  DEPARTURE......+0.21                          ASOS..............3.46 TOTAL PRECIPITATION FOR THE YEAR..........29.27  DEPARTURE......+3.34                          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 Low temp since midnight is 56F; 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 22 HIGH 93F IN 1921, 2012 LOW 43F IN 1940 PRECIP 1.57 INS IN 1900 PEAK GUST 74 MPH NW IN 1988 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) TODAY'S REPORT PREPARED BY: Benjamin Turner