BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY THURSDAY, MARCH 26, 2020 ALL TIMES ARE IN EASTERN STANDARD TIME CLEAR CONDITIONS IN THE MORNING BEGIN TO CLOUD UP IN THE AFTERNOON ON A CLOSE TO NORMAL EARLY SPRING DAY.... Today we observed 25 miles of visibility in the morning, increasing to 70 miles by 1 P.M. Skies went from almost overcast, to clear, and back to mostly cloudy by 4 P.M. This is all in conjunction with a pressure drop that became more significant over the course of the day. Wind became lighter since this morning, and shifted from NW to NE.   The overnight low was 30F, this is the same as the normal low of 30F. The high so far today is 49F, a degree above the normal max of 48F. Today's Observations: 7 A.M. Weather: Broken altostratus Temperature: 32F; Dew Point: 30F; Relative Humidity: 92% Wind: N at 9G14 kts Sea-level pressure: 30.03 ins. Hg: rising, then more slowly Visibility: 25 miles, distant fog 6-hr Max temp: 34F 6-hr Min temp: 30F 24-hr Precip:  0.03 ins. 24-hr Snowfall: 0.0 ins. BHO SA 1155 E100 BKN 25 170/32/30/3509G14/003/ DSNT FG ALQDS/ 8/02/ 70003 53008 10034 20030 10 A.M. Weather: Few cirrostratus Temperature: 44F; Dew Point: 27F; Relative Humidity: 51% Wind: NW at 10G16 kts Sea-level pressure: 30.02 ins. Hg: falling steadily Visibility: 65 miles 3-hr Precip:  0.00 ins. 3-hr Snowfall: 0.0 ins. BHO SA 1455 CLR 65 167/44/27/3310G16/002/ FEW CS ALQDS/ 8/005 58003 1 P.M. Weather: Few cirrus Temperature: 49F; Dew Point: 25F; Relative Humidity: 39% Wind: ENE at 7 kts Sea-level pressure: 29.96 ins. Hg: falling, then more rapidly Visibility: 70 miles 6-hr Max temp: 49F 6-hr Min temp: 32F 6-hr Precip:  0.00 ins. 6-hr Snowfall: 0.0 ins. BHO SA 1755 CLR 70 145/49/25/0207/996/ FEW CI ALQDS/ 8/002 58022 10049 20032 SUMMARY FOR WEDNESDAY, MARCH 25, 2020 TEMPERATURE (DEGREES F) MAX.....41   NORMAL.....47 MIN.....35   NORMAL.....30 MEAN....38   NORMAL.....38 DEPARTURE FROM 30-YEAR NORMAL................... 0 TOTAL DEPARTURE FOR THE MONTH..................+170 [+6.6 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............27  DEPARTURE.......  0 TOTAL HEATING UNITS FOR THE MONTH..............593  DEPARTURE......-170 TOTAL HEATING UNITS FOR THE SEASON............4733  DEPARTURE......-598 TOTAL HEATING UNITS LAST SEASON TO DATE.......5272  DEPARTURE......-540 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................28 ENE AT  9:53 P.M.                      AERO.........................28 ENE AT 10:10 P.M.                      ASOS.........................28 ENE AT  9:53 P.M.                    DAVIS........................28 ENE AT  9:52 P.M. RMY 27 FASTEST MILE FOR YESTERDAY......................20 ENE AT  5:30 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................20 E   AT  5:31 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................20 E   AT  5:31 P.M. AVERAGE WIND SPEED AND DIRECTION..............11.4 ENE                                   ASOS.......................11.2                    DAVIS......................12.0 ENE [79 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.03  DEPARTURE......-0.16                          ASOS..............0.04 TOTAL PRECIPITATION FOR THE MONTH..........3.49  DEPARTURE......-1.00                          ASOS..............3.63 TOTAL PRECIPITATION FOR THE YEAR...........8.15  DEPARTURE......-4.76                          ASOS..............8.54 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.......-0.3 TOTAL SNOWFALL FOR THE MONTH................2.8  DEPARTURE.......-8.2 TOTAL SNOWFALL FOR THE SEASON..............27.6  DEPARTURE......-30.4 PRELIMINARY CLIMATE SUMMARY FOR MARCH 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 03/01  33/15/24/-7/0.00/0.0/.../..         28 WNW AERO 28 WNW RMY 27 03/02  52/24/38/+7/T/T/.../..              40 S   AERO 39 S   RMY 41 03/03  64/45/55/+23/..../0.0/.../..        30 S   AERO 30 S   RMY N/A 03/04  50/38/44/+12/..../0.0/.../..        56 W   AERO 56 W   RMY 58 03/05  51/32/42/+10/0.00/0.0/.../..        31 W   AERO 31 NW  RMY 32 03/06  47/30/39/+7/..../.../.../..         46 NE  AERO 45 NE  RMY 46 03/07  43/26/35/+2/..../.../.../..         42 N   AERO 43 N   RMY 44 03/08  53/26/40/+7/0.00/0.0/.../..         31 W   AERO 30 W   RMY 28 03/09  72/40/56/+23/0.00/0.0/.../..        32 SW  AERO 32 SW  RMY 31 03/10  68/49/59/+26/0.00/0.0/.../..        48 WSW AERO 46 WSW RMY 49 03/11  56/37/47/+13/0.00/0.0/.../..        31 WNW AERO M  M   RMY 21 03/12  46/31/39/+5/..../0.0/.../..         21 SE  AERO 18 SE  RMY N/A 03/13  59/38/49/+15/..../0.0/.../..        46 WNW AERO 44 WNW RMY 46 03/14  51/35/43/+8/0.00/0.0/.../..         37 W   AERO 36 W   RMY 35 03/15  47/28/38/+3/0.00/0.0/.../..         28 NW  AERO 28 NW  RMY N/A 03/16  36/22/29/-6/0.00/0.0/.../..         21 NE  AERO 21 ESE RMY 21 03/17  43/28/36/0/..../0.4/.../..          29 W   AERO 30 W   RMY 29 03/18  54/31/43/+7/..../0.0/.../..         26 S   AERO 26 S   RMY 26 03/19  43/37/40/+4/..../0.0/.../..         36 E   AERO 35 E   RMY 34 03/20  66/37/52/+15/..../0.0/.../..        48 W   AERO 48 W   RMY 46 03/21  55/29/42/+5/0.00/0.0/.../..         45 W   AERO 48 W   RMY N/A 03/22  36/23/30/-7/0.00/0.0/.../..         23 NE  AERO 24 NE  RMY 23 03/23  40/25/33/-5/..../1.6/.../..         38 NNE AERO 39 NNE RMY 38 03/24  48/33/41/+3/..../.../.../..         37 NNW AERO 37 NNW RMY N/A 03/25  41/35/38/0/0.03/0.0/.../..          28 ENE AERO 28 ENE RMY 27 03/26 The low since midnight is 30F, daily normal minimum is 30F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):   RECORDS FOR MARCH 26 HIGH 76 IN 1922, 1949 LOW 6 IN 1960 PRECIP 1.99 INS. IN 1988 SNOWFALL 5.4 INS. IN 2001 PEAK GUST 63 MPH S IN 1970 RECORDS FOR MARCH 27 HIGH 78 IN 1998 LOW 12 IN 1975 PRECIP 1.05 INS. IN 1913 SNOWFALL 6.6 INS. IN 1959 PEAK GUST 62 MPH NW IN 1965, SE IN 1992 TODAY'S REPORT PREPARED BY: Benjamin Turner