BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, JUNE 1, 2019 ALL TIMES ARE IN EASTERN STANDARD TIME FAIR WEATHER DAY WITH POOR VISIBILITY ON TOP OF GREAT BLUE HILL... Winds were light throughout the day with direction became variable at times. Hazy conditions were enhanced by low wind, haze was most likely caused by pollution and wildfire in northern Canada. This caused a decrease in visibility staying around 40 miles. Sea fog was observed at the 1 P.M observation with a brown tint due the haze. The high so far today is 72F, 2 degrees above the daily normal maximum of 70F. The low since midnight is 54F, two degrees above the normal minimum of 52F. Today's Observations: 7 A.M. Weather: Bbroken cirrostratus Temperature: 58F; Dew Point: 55F; Wind: WSW at 6 kts, Sea-level pressure: 29.87 ins. Hg, rising, then falling Visibility: 40 miles, distant haze 6-hr Max temp: 72F 6-hr Min temp: 54F 24-hr Precip: 0.00 ins. 24-hr snowfall: 0.0 ins. Snow depth: 0 ins. BHO SA 1155 E250 BKN 40 118/58/55/3506/987/ DSNT HZ ALQDS/ 8/006 50013 10072 20054 10 A.M. Weather: Broken cirrostratus Temperature: 67F; Dew Point: 55F; Wind: SE at 4 kts, Wind: Winds light Sea-level pressure: 29.87 ins. Hg, rising, then falling Visibility: 40 miles, distant haze 3-hr Precip: 0.00 ins.   BHO SA 1455 E250 BKN 40 118/67/55/1304/987/ DSNT HZ ALQDS WND LGT/ 8/006 50003 1 P.M. Weather: Broken cirrostratus Temperature: 70F; Dew Point: 53F; Wind: NE at 7 kts Sea-level pressure: 29.83 ins. Hg, decreasing, then more quickly Visibility: 40 miles, 10 miles NNE-E distant haze and distant fog NNE to E 6-hr Max temp: 72F 6-hr Min temp: 58F 6-hr Precip: 0.00 ins. BHO SA 1755 E250 BKN 20 104/70/53/0507/983/ VSBY NNE-E 10 DSNT FG NNE–E DSNT HZ ALQDS/ 8/006 58014 10072 20058 SUMMARY FOR FRIDAY, MAY 31, 2019 TEMPERATURE (DEGREES F) MAX.....72   NORMAL.....70 MIN.....54   NORMAL.....52 MEAN....63   NORMAL.....61 DEPARTURE FROM 30-YEAR NORMAL......................+2 TOTAL DEPARTURE FOR THE MONTH.....................-66 [-2.3 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............2   DEPARTURE.........-8 TOTAL HEATING UNITS FOR THE MONTH.............318   DEPARTURE........+50 TOTAL HEATING UNITS FOR THE SEASON...........6219   DEPARTURE........-84 TOTAL HEATING UNITS LAST SEASON TO DATE......5847   DIFFERENCE......+372 COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY...............0   DEPARTURE.........0 TOTAL COOLING UNITS FOR THE MONTH...............8   DEPARTURE........-13 TOTAL COOLING UNITS FOR THE SEASON..............8   DEPARTURE........-16 TOTAL COOLING UNITS LAST SEASON TO DATE........62   DEPARTURE........-54 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................28  N    AT 11:09 A.M.                    AERO.........................23  N    AT 11:19 A.M.                    ASOS.........................27  ENE  AT 11:23 A.M.                    DAVIS........................27  ENE  AT 11:22 A.M.  RMY 26 FASTEST MILE FOR YESTERDAY......................20  N    AT 11:19 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................20  ENE  AT 11:24 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................20  ENEN AT 11:11 A.M. AVERAGE WIND SPEED AND DIRECTION................9.7 SE                    ASOS.........................10.1                    DAVIS........................10.1 SSE [165 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..........0.00  DEPARTURE.......-0.17                          ASOS..............0.00 TOTAL PRECIPITATION FOR THE YEAR..........25.89  DEPARTURE.......+3.21                          ASOS.............25.61 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/.../.../..          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 Low temp since midnight is 46F; normal low is 52F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR JUNE 1 HIGH 90F IN 1937,2013 LOW 36F IN 1945 [Record for month] PRECIP 2.28 INS IN 1992 PEAK GUST 51e MPH SE IN 1952 RECORDS FOR JUNE 2 HIGH 91F IN 1895 LOW 41F IN 1907, 1929 PRECIP 2.36 INS IN 1982 SNOWFALL TRACE IN 1907 (IP) PEAK GUST 63 MPH NW IN 2000 TODAY'S REPORT PREPARED BY: Nicholas Rousseau