BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, MARCH 16, 2019 ALL TIMES ARE IN EASTERN STANDARD TIME COOLER BUT WARMER THAN YESTERDAY WITH PARTIAL SUNSHINE... The low temperature this morning was 39F and the high has reached the upper 40s this afternoon with the high for the day recorded at midnight of 50F. Strong west winds  are gusting frequently near 40 mph with a peak gust so far of 45 mph from the W at 11:59 AM EST. Visibility has been very high all day near 80 miles as the dew  point has dropped from 30F at 7 AM to the low 20s by early afternoon.  Snow cover has dropped to zero on the summit this morning after the warm temperatures of the last few days. Ice cover on the ponds is dropping rapidly today in the strong winds with Ponkapoag dropping from near 10/10 ice cover early today to about 1/10 ice cover by early afternoon.          Today's Observations: 7 A.M. Weather: Clear, few stratocumulus distant WSW-NNW, few altocumulus distant ENE-S Temperature: 40F; Dew Point: 30F; Wind: W at 9 kts, Sea-level pressure: 29.78 ins. Hg, falling, then more slowly   Visibility: 75 miles 6-hr Max temp: 49F 6-hr Min temp: 39F 24-hr Precip:  0.12 ins. 24-hr snowfall: 0.0 ins. Snow depth: 0 ins.  BHO SA 1155 CLR 75 085/40/30/2709/978/ FEW SC DSNT WSW-NNE  FEW AC DSNT ENE-S/ 8/053 51023 70012 10049 20039 10 A.M. Weather: Broken stratocumulus Temperature: 47F; Dew Point: 27F; Wind: W at 16G25 kts,     Sea-level pressure: 29.80 ins. Hg, falling, then more rapidly   Visibility: 80 miles 3-hr Precip: 0.00 ins.  BHO SA 1455 E50 BKN 80 090/47/27/2716G25/980/ PK WND 2730/33/  8/500 53005 1 P.M. Weather: Scattered stratocumulus  Temperature: 44F; Dew Point: 22F; Wind: W at 18G35 kts    Sea-level pressure: 29.83 ins. Hg, falling, then more rapidly   Visibility: 80 miles  6-hr Max temp: 44F 6-hr Min temp: 40F 6-hr Precip:  0.00 ins. 6-hr snowfall: 0.0 ins.  BHO SA 1755 50 SCT 80 100/44/22/2818G35/983/ PK WND 2739/1659/  8/500 53010 10044 20040 SUMMARY FOR FRIDAY, MARCH 15, 2019  TEMPERATURE (DEGREES F) MAX.....58   NORMAL.....44 MIN.....40   NORMAL.....26 MEAN....49   NORMAL.....35 DEPARTURE FROM 30-YEAR NORMAL........................+14 TOTAL DEPARTURE FOR THE MONTH........................-37 [-2.7 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............16   DEPARTURE........-14 TOTAL HEATING UNITS FOR THE MONTH.............518   DEPARTURE........+37 TOTAL HEATING UNITS FOR THE SEASON...........5004   DEPARTURE........-45 TOTAL HEATING UNITS LAST SEASON TO DATE......4582   DIFFERENCE......+422 PEAK GUST AND AVERAGE WIND SPEED (MPH)  PEAK WIND GUST FOR YESTERDAY....................37 SSW AT  6:35 A.M.                    AERO.........................38 SSW AT  6:34 A.M.                    ASOS.........................41 S   AT  3:39 A.M.                     DAVIS........................49 S   AT  5:56 A.M. RMY 39 FASTEST MILE FOR YESTERDAY......................30 SSW AT  6:22 A.M.  MAXIMUM 2-MINUTE ASOS AVERAGE...................31 S   AT  6:12 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................32 S   AT  5:22 A.M. AVERAGE WIND SPEED AND DIRECTION..............20.9 SSW                    ASOS.......................21.0                    DAVIS......................21.0 S   [177 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.12  DEPARTURE.......-0.06                          ASOS..............0.08 TOTAL PRECIPITATION FOR THE MONTH..........2.97  DEPARTURE.......+0.38                          ASOS..............2.97 TOTAL PRECIPITATION FOR THE YEAR..........11.91  DEPARTURE.......+0.90                          ASOS.............12.04 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE........-0.4 TOTAL SNOWFALL FOR THE MONTH...............21.0  DEPARTURE.......+13.7 TOTAL SNOWFALL FOR THE SEASON..............45.5  DEPARTURE........-8.8 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 38/17/28/-3/..../.../.../..           16 NNW AERO 13 NNW RMY 22 03/02 31/27/29/-2/..../.../.../.. 29 NNE AERO 22 NNE RMY 30 03/03 40/25/33/+1/..../.../.../..           21 ESE AERO 14 ESE RMY N/A 03/04 35/18/27/-5/..../.../.../..           33 W   AERO 18 W   RMY 32 03/05 29/10/20/-12/0.00/0.0/.../..          28 WNW AERO 12 SW  RMY N/A 03/06 24/10/17/-15/0.00/0.0/.../..          40 WNW AERO 25 WNW RMY 41 03/07 26/6/16/-17/0.00/0.0/.../..           35 W   AERO 18 W   RMY 34 03/08 35/11/23/-10/0.00/0.0/.../..          23 WSW AERO M  M   RMY M  03/09 43/22/33/0/0.00/0.0/.../..            20 WSW AERO M  M   RMY N/A 03/10 40/26/33/0/..../.../.../..            32 ESE AERO 23 S   RMY 32 03/11 48/33/41/+7/..../.../.../..           40 NW  AERO 37 NNW RMY 41 03/12 41/27/34/0/..../.../.../..            32 N   AERO 33 N   RMY 34 03/13 43/24/34/0/..../.../.../..            18 W   AERO 21 W   RMY 23 03/14 48/32/40/0/..../.../.../.. 25 S   AERO 28 S   RMY M 03/15 58/40/49/+14/0.12/.../.../..          37 SSW AERO 38 SSW RMY 39 03/16 Low temp since midnight is 39F; normal low is 26F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR MARCH 16 HIGH 73 IN 1990 LOW 8 IN 1932 PRE 1.95 INS. IN 1900 SNOW 10.0 INS. IN 1896 WIND 79 MPH NE IN 1956 RECORDS FOR MARCH 17 HIGH 69 IN 2003 LOW 6 IN 1885 PRECIP 1.97 INS. IN 1968 SNOWFALL 6.5 INS. IN 1956 PEAK GUST 70 MPH SSW IN 1973 TODAY'S REPORT PREPARED BY: Mike Iacono and Nick Rousseau