BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY TUESDAY, JUNE 11, 2019 ALL TIMES ARE IN EASTERN STANDARD TIME CONDITIONS IMPROVE THROUGHOUT THE DAY FOLLOWING OVERNIGHT RAINFALL.... Rain last night left 1.11 inches in the gauge, with an extra 0.19 inches falling after the 7 A.M. observation. Weather conditions improved as the day went on, with 70 miles of visibility being seen at 1 P.M. A wind shift from S-WNW was observed around 9 A.M. this morning, with a peak gust of 28 mph occurring a half hour before noontime. The high so far today is 71F, 3 degrees under the normal of 74F. The low since midnight is 65F, 9 degrees above the daily normal minimum of 56F. 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 [+0.50] 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: Rain and fog Temperature: 65F; Dew Point: 65F; Wind: S at 11 kts Sea-level pressure: 29.80 ins. Hg, falling, then steady Visibility: 1/2 miles 6-hr Max temp: 66F 6-hr Min temp: 65F 24-hr Precip: 1.11 ins. 24-hr snowfall: 0.0 ins. Snow depth: 0 ins. BHO SA 1155 W3 X 1/2RF 092/65/65/1711/980/ 8//// 70111 56006 10066 20065 10 A.M. Weather: scattered stratus fractus, overcast nimbostratus Temperature: 67F; Dew Point: 67F; Wind: WNW at 6 kts, Wind: Light Sea-level pressure: 29.79 ins. Hg, falling, then steady Visibility: 10 miles, 70 miles NW-NNW 3-hr Precip: 0.15 ins.   BHO SA 1455 10 SCT 65 OVC 10R-F 088/67/67/2906/979/ WND LGT VSBY 70 NW-NNW R-CTD/ 8/72/ 6015/ 56004 1 P.M. Weather: Scattered cumulus, broken altostratus Temperature: 71F; Dew Point: 62F; Wind: WNW at 10G21 kts Sea-level pressure: 29.79 ins. Hg, rising steadily Visibility: 70 miles 6-hr Max temp: 71F 6-hr Min temp: 64F 6-hr Precip: 0.19 ins. BHO SA 1755 25 SCT E140 BKN 70 089/71/62/2910G21/979/ 8/110 6019/ 53001 10071 20064 SUMMARY FOR MONDAY, JUNE 10, 2019 TEMPERATURE (DEGREES F) MAX.....79   NORMAL.....73 MIN.....54   NORMAL.....56 MEAN....67   NORMAL.....65 DEPARTURE FROM 30-YEAR NORMAL......................+2 TOTAL DEPARTURE FOR THE MONTH.....................+22 [+2.0 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............0   DEPARTURE.........0 TOTAL HEATING UNITS FOR THE MONTH..............13   DEPARTURE........-27 TOTAL HEATING UNITS FOR THE SEASON...........6232   DEPARTURE.......-111 TOTAL HEATING UNITS LAST SEASON TO DATE......5898   DIFFERENCE......+334 COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY...............2   DEPARTURE.........-1 TOTAL COOLING UNITS FOR THE MONTH..............20   DEPARTURE.........-1 TOTAL COOLING UNITS FOR THE SEASON.............28   DEPARTURE........-17 TOTAL COOLING UNITS LAST SEASON TO DATE........74   DEPARTURE........-46 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................26  SSE AT  11:21 P.M.                    AERO.........................25  SSE AT  11:32 P.M.                    ASOS.........................2   S   AT  11:42 P.M.                    DAVIS........................28  SE  AT  11:41 P.M.  RMY 33 FASTEST MILE FOR YESTERDAY......................21  SSE AT  11:35 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................20  S   AT  11:36 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................21  SSE AT  11:36 P.M. AVERAGE WIND SPEED AND DIRECTION.................10.0 SSE                    ASOS..........................9.7                    DAVIS.........................10.0 SSW [158 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....1.11  DEPARTURE.......+0.95                          ASOS..............1.02 TOTAL PRECIPITATION FOR THE MONTH..........1.24  DEPARTURE.......-0.41                          ASOS..............1.24 TOTAL PRECIPITATION FOR THE YEAR..........27.03  DEPARTURE.......+2.72                          ASOS.............26.97 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/..../0.0/.../..           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/..../0.0/.../..          35 E   AERO M  M    RMY 34 05/14 44/38/41/-16/..../0.0/.../..          26 NNE AERO M  M    RMY 25 05/15 58/40/49/-8/..../0.0/.../..           28 NW  AERO M  M    RMY 28 05/16 68/46/57/0/..../0.0/.../..            17 NW  AERO M  M    RMY 19 05/17 64/49/57/0/..../0.0/.../..    22 WNW AERO 21 WNW  RMY 25 05/18 72/49/61/+3/..../0.0/.../..           26 SSE AERO 25 SSE  RMY 29 05/19 69/50/60/+2/..../0.0/.../..           39 S   AERO 43 SSE  RMY 42 05/20 85/52/69/11/..../0.0/.../..    35 SW  AERO 40 SW   RMY 39 05/21 69/52/61/+2/0.00/0.0/.../..           40 NW  AERO 46 NW   RMY 45 05/22 68/49/59/0/0.00/0.0/.../..            32 NNW AERO 29 NW   RMY N/A 05/23 68/48/58/-1/..../0.0/.../..    36 SSW AERO 37 SSW  RMY 40 05/24 68/47/58/-1/..../0.0/.../..    47 NW  AERO 47 NW   RMY 51 05/25 75/47/61/+1/..../0.0/.../..    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/+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 Low temp since midnight is 65F; normal low is 56F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR JUNE 11 HIGH 92F IN 1973, 1984 LOW 40F IN 1972 PRECIP 2.66 INCHES IN 1922 PEAK GUST 43e MPH S IN 1945 RECORDS FOR JUNE 12 HIGH 94F IN 2017 LOW 40F IN 1906 PRECIP 1.79 INS 1955 PEAK GUST 58 MPH NW IN 1991 TODAY'S REPORT PREPARED BY: Benjamin Turner