BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY MONDAY, MARCH 30, 2020 ALL TIMES ARE IN EASTERN STANDARD TIME ANOTHER OVERCAST AND DREARY DAY ATOP GREAT BLUE HILL.... Persistent light drizzle and fog has been the theme today following showers and thunderstorms last night. The overnight activity brought an additional 0.35" of rain, bringing our 24 hour total ending at 7am this morning to 0.62". We've really been making great strides towards making up our precipitation deficit for the month, which currently stands at only 0.81" below normal. So far we've only managed an additional 0.01" since 7am this morning.   Visibility has improved a little bit this afternoon compared to what it was this morning, up to about 5 miles at times. Our high temperature so far today is 40F, which is 9 degrees lower than our daily normal high temperature of 49F. The low since midnight is 37F, which is 6 degrees above the normal low of 31 degrees. Today's Observations: 7 A.M. Weather: Sky obscured, vertical visibility 200 feet, light drizzle Temperature: 37F; Dew Point: 37F; Relative Humidity: 100% Wind: NE at 11G21 kts, peak wind 26 kts at 6:14 AM Sea-level pressure: 29.98 ins. Hg: rising then falling Visibility: 1/2 mile, fog 6-hr Max temp: 38F 6-hr Min temp: 37F 24-hr Precip:  0.62 ins. 24-hr Snowfall: 0.0 ins. BHO SA 1155 X W2 1/2L-F 152/37/37/0411G21/998/ PK WND 0426/14/ 8//// 50006 6/// 70062 10038 20037 10 A.M. Weather: Sky obscured, vertical visibility 200 feet, light drizzle Temperature: 38F; Dew Point: 38F; Relative Humidity: 100% Wind: NNE at 11G19 kts Sea-level pressure: 29.99 ins. Hg: rising then falling Visibility: 1 mile, fog 3-hr Precip:  0.01 ins. 3-hr Snowfall: 0.0 ins. BHO SA 1455 X W3 1L-F 156/38/38/0311G19/999/ 8//// 50004 6001 1 P.M. Weather: Overcast stratus, light drizzle Temperature: 39F; Dew Point: 38F; Relative Humidity: 96% Wind: NE at 10G19 kts Sea-level pressure: 29.95 ins. Hg: falling, then more slowly Visibility: 5 miles, 2 miles N-NE, fog 6-hr Max temp: 40F 6-hr Min temp: 37F 6-hr Precip:  0.01 ins. 6-hr Snowfall: 0.0 ins. BHO SA 1755 E1 OVC 5L-F 141/39/38/0410G19/995/ VSBY 2 N-NE LB47/ 8/7// 56015 6001 10040 20037 SUMMARY FOR SUNDAY, MARCH 29, 2020 TEMPERATURE (DEGREES F) MAX.....43   NORMAL.....49 MIN.....37   NORMAL.....31 MEAN....40   NORMAL.....40 DEPARTURE FROM 30-YEAR NORMAL.................... 0 TOTAL DEPARTURE FOR THE MONTH..................+191 [+6.4 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............25  DEPARTURE........ 0 TOTAL HEATING UNITS FOR THE MONTH..............675  DEPARTURE......-191 TOTAL HEATING UNITS FOR THE SEASON............4815  DEPARTURE......-619 TOTAL HEATING UNITS LAST SEASON TO DATE.......5378  DEPARTURE......-563 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................32 NE  AT 10:51 P.M.                      AERO.........................33 NE  AT 11:55 P.M                     ASOS.........................33 NE  AT 10:41 P.M.                    DAVIS........................32 E   AT  1:37 P.M. RMY 33 FASTEST MILE FOR YESTERDAY......................24 E   AT  3:48 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................23 E   AT  3:48 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................24 E   AT  3:48 P.M. AVERAGE WIND SPEED AND DIRECTION..............15.2 E                                  ASOS.......................15.0                    DAVIS......................15.3 E [099 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.62  DEPARTURE......+0.45                          ASOS..............0.64 TOTAL PRECIPITATION FOR THE MONTH..........4.41  DEPARTURE......-0.81                          ASOS..............4.56 TOTAL PRECIPITATION FOR THE YEAR...........9.07  DEPARTURE......-5.02                          ASOS..............9.47 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.......-0.2 TOTAL SNOWFALL FOR THE MONTH................2.8  DEPARTURE.......-9.3 TOTAL SNOWFALL FOR THE SEASON..............27.6  DEPARTURE......-31.5 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  51/30/41/+2/..../0.0/.../..         25 SSE AERO 26 SSW RMY N/A 03/27  61/41/51/+12/..../0.0/.../..        32 NW  AERO M  M   RMY 33 03/28  56/36/46/+7/..../0.0/.../..         22 S   AERO 21 E   RMY N/A 03/29  43/37/40/0/..../0.0/.../..          32 NE  AERO 33 NE  RMY 33 03/30 The low since midnight is 37F, daily normal minimum is 31F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):   RECORDS FOR MARCH 30 HIGH 83 IN 1977 LOW 10 IN 1887 PRECIP 2.92 INS. IN 2010 SNOWFALL 3.9 INS. IN 1957 PEAK GUST 60 MPH NW IN 1999 RECORDS FOR MARCH 31 HIGH 89 IN 1998  [RECORD HIGH FOR MONTH] LOW 16 IN 1923 PRECIP 2.89 IN 1987 SNOWFALL 15.0 IN 1997 PEAK GUST 81 MPH SSE IN 1987 TODAY'S REPORT PREPARED BY: Matt Douglas