BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, JUNE 9, 2019 ALL TIMES ARE IN EASTERN STANDARD TIME WARM WITH LIGHT SOUTHERLY WINDS AND GOOD VISIBILITY ATOP GREAT BLUE HILL.... Despite a distant haze, visibility was more than 65 miles on average. Conditions continue to be dry with negligible cloud cover, reaching a low relative humidity of 30% at the 1 P.M. observation. Light warm air advection from the south and a mostly clear sky has brought today's temperatures above seasonal averages. The high so far today is 77F, 4 degrees above the normal of 73F. The low since midnight is 55F, the same as the daily normal minimum of 55F. PRELIMINARY STATS FOR MAY 2019 TEMPERATURE, Deg. F Avg. Max. 63.5 [-2.8] Avg. Min. 46.0 [-1.8] Mean      54.8 [-2.2] 24-hour corrected mean: 54.4 Max. for month: 85F on the 26th Min. for month: 36F on the 12th HEATING DEGREE DAYS Total heating units:    318 [+50] Total for the season:  6219 [-84] Total for last season: 5847 COOLING DEGREE DAYS Total cooling units:   8 [-14] Total for the season:  8 [-16] Total for last season: 62   PRECIPITATION, Inches Total: 4.61 [-0.02] Greatest in 24 hrs: N/A SNOWFALL, Inches Total: Trace [+/-0.0] Greatest in 24 hrs: Trace [12th] WIND, mph Avg. uncorrected wind speed: 10.5 Avg. corrected wind speed: 11.1 Prevailing wind direction: S at 13% Peak gust and direction: 47 NW on 24th   SUNSHINE: Campbell-Stokes card minutes: N/A Astronomical total minutes:   N/A Today's Observations: 7 A.M. Weather: Scattered cirrostratus Temperature: 62F; Dew Point: 43F; Wind: WSW at 6 kts, Wind: Light Sea-level pressure: 30.35 ins. Hg, rising steadily Visibility: 70 miles, distant smoke layer 6-hr Max temp: 62F 6-hr Min temp: 55F 24-hr Precip: 0.00 ins. 24-hr snowfall: 0.0 ins. Snow depth: 0 ins. BHO SA 1155 250 SCT 70 277/62/43/2506/035/ THN K LYR ALQDS WND LGT/ 8/002 52013 10062 20055 10 A.M. Weather: Scattered cirrus Temperature: 73F; Dew Point: 45F; Wind: S at 8G16 kts Sea-level pressure: 30.37 ins. Hg, steady, then rising Visibility: 50 miles, distant haze 3-hr Precip: 0.00 ins.   BHO SA 1455 250 SCT 50 282/73/45/1708G16/037/ DSNT HZ ALQDS/ 8/002 51005 1 P.M. Weather: Scattered cirrus Temperature: 77F; Dew Point: 43F; Wind: SSW at 9G16 kts Sea-level pressure: 30.33 ins. Hg, falling steadily Visibility: 70 miles 6-hr Max temp: 77F 6-hr Min temp: 62F 6-hr Precip: 0.00 ins. BHO SA 1755 250 SCT 70 272/77/43/2009G16/033/ 8/002 58010 10077 20062 SUMMARY FOR SATURDAY, JUNE 8, 2019 TEMPERATURE (DEGREES F) MAX.....78   NORMAL.....73 MIN.....57   NORMAL.....55 MEAN....68   NORMAL.....64 DEPARTURE FROM 30-YEAR NORMAL......................+4 TOTAL DEPARTURE FOR THE MONTH.....................+18 [+2.1 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............0   DEPARTURE.........-4 TOTAL HEATING UNITS FOR THE MONTH..............13   DEPARTURE........-20 TOTAL HEATING UNITS FOR THE SEASON...........6232   DEPARTURE.......-104 TOTAL HEATING UNITS LAST SEASON TO DATE......5897   DIFFERENCE......+335 COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY...............3   DEPARTURE.........+1 TOTAL COOLING UNITS FOR THE MONTH..............16   DEPARTURE..........0 TOTAL COOLING UNITS FOR THE SEASON.............24   DEPARTURE........-16 TOTAL COOLING UNITS LAST SEASON TO DATE........70   DEPARTURE........-46 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................23 ENE AT  8:20 A.M.                    AERO.........................21 SW  AT 11:40 P.M.                    ASOS.........................24 E   AT  8:21 A.M.                    DAVIS........................23 ENE AT  8:20 A.M.  RMY 21 FASTEST MILE FOR YESTERDAY......................16 SSW AT 11:15 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................17 SW  AT 11:06 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................17 ENE AT  8:22 A.M. AVERAGE WIND SPEED AND DIRECTION................10.3 S                    ASOS.........................10.4                    DAVIS........................10.2 ESE [116 deg.] 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..........0.13  DEPARTURE.......-1.20                          ASOS..............0.13 TOTAL PRECIPITATION FOR THE YEAR..........26.02  DEPARTURE.......+2.03                          ASOS.............25.86 PRELIMINARY CLIMATE SUMMARY FOR MAY 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 05/01 57/40/49/-4/0.00/0.0/.../..           21 S   AERO 21 SSE  RMY 21 05/02 45/41/43/-10/0.02/0.0/.../..          21 NE  AERO 21 SSW  RMY 20 05/03 60/43/52/-1/..../0.0/.../..           23 S   AERO 23 S    RMY 22 05/04 54/46/50/-4/..../0.0/.../..           14 ENE AERO 14 ENE  RMY 17 05/05 52/44/48/-6/0.00/0.0/.../..           18 NE  AERO 20 NE   RMY N/A 05/06 58/44/51/-3/..../0.0/.../..           25 NE  AERO 26 ENE  RMY 24 05/07 72/41/57/+2/0.12/0.0/.../..           30 S   AERO 29 S    RMY 30 05/08 67/48/58/+3/0.00/0.0/.../..           20 NE  AERO 20 NE   RMY 19 05/09 60/43/52/-3/0.00/0.0/.../..           21 SE  AERO 21 E    RMY 22 05/10 61/46/54/-1/0.16/0.0/.../..           35 S   AERO 37 S    RMY 37 05/11 68/50/59/+3/..../.../.../..           26 NW  AERO M  M    RMY N/A 05/12 50/36/43/-13/0.68/T/.../..          30 ENE AERO M  M    RMY N/A 05/13 52/38/45/-11/..../.../.../..          35 E   AERO M  M    RMY 34 05/14 44/38/41/-16/..../.../.../..          26 NNE AERO M  M    RMY 25 05/15 58/40/49/-8/..../.../.../..           28 NW  AERO M  M    RMY 28 05/16 68/46/57/0/..../.../.../..            17 NW  AERO M  M    RMY 19 05/17 64/49/57/0/..../.../.../..    22 WNW AERO 21 WNW  RMY 25 05/18 72/49/61/+3/..../.../.../..           26 SSE AERO 25 SSE  RMY 29 05/19 69/50/60/+2/..../.../.../..           39 S   AERO 43 SSE  RMY 42 05/20 85/52/69/11/..../.../.../..    35 SW  AERO 40 SW   RMY 39 05/21 69/52/61/+2/0.00/.../.../..           40 NW  AERO 46 NW   RMY 45 05/22 68/49/59/0/0.00/.../.../..            32 NNW AERO 29 NW   RMY N/A 05/23 68/48/58/-1/..../.../.../..    36 SSW AERO 37 SSW  RMY 40 05/24 68/47/58/-1/..../.../.../..    47 NW  AERO 47 NW   RMY 51 05/25 75/47/61/+1/..../.../.../..     M  M   AERO 35 SSW  RMY 39 05/26 85/49/67/+7/..../0.0/.../..           40 W   AERO 38 W    RMY 39 05/27 76/57/67/+7/..../0.0/.../..           30 NE  AERO 22 NE   RMY 27 05/28 57/48/53/-8/..../0.0/.../..           26 E   AERO 22 ESE  RMY 25 05/29 51/45/48/-13/..../0.0/.../..          21 NNW AERO 21 NNW  RMY N/A 05/30 63/46/55/-6/..../0.0/.../..     23 S   AERO 23 S    RMY 25 05/31 72/54/63/2/..../0.0/.../..     28 N   AERO 23 N    RMY 26 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/+7/..../.../..     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 Low temp since midnight is 55F; normal low is 55F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR JUNE 9 HIGH 94F IN 2008 LOW 40F IN 1980 PRECIP 2.08 INCHES IN 1931 PEAK GUST 67 MPH NW IN 1973 RECORDS FOR JUNE 10 HIGH 98F IN 2008 LOW 42F IN 1913,1920 PRECIP 2.51 INCHES IN 1931 PEAK GUST 60e MPH NW IN 1941 TODAY'S REPORT PREPARED BY: Benjamin Turner