BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY MONDAY, MARCH 11, 2019 ALL TIMES ARE IN EASTERN STANDARD TIME ABOVE NORMAL TEMPERATURES AND FAIR WEATHER  FOLLOWING A BELOW AVERAGE WEEKEND.... We measured an 0.53 inches of liquid from yesterday's wintry precipitation. Visibility climbed from 40 miles  this morning to 70 miles in the afternoon. Wind has  remained westerly with a peak gust so far of 41 mph. The ponds have stayed frozen despite above average  temperatures. The high so far today is 47F, 4 degrees  below the daily normal maximum of 43F. The low since  midnight is 33F, 9 degrees above the normal minimum  of 24F.       PRELIMINARY STATS FOR FEBRUARY 2019 TEMPERATURE, Deg. F Avg. Max. 37.3 [+0.5] Avg. Min. 21.6 [+2.5] Mean      29.5 [+1.6] 24-hour corrected mean: 29.2 Max. for month: 62F on the 5th Min. for month: 5F  on the 1st HEATING DEGREE DAYS Total heating units:    990 [-47] Total for the season:  4486 [-82] Total for last season: 4122 PRECIPITATION, Inches Total: 3.61 [-0.46] Greatest in 24 hrs: 1.14 ins. on the 12th-13th SNOWFALL, Inches Total: 12.1 [-1.8] Greatest in 24 hrs: 4.7 ins. on the 17th-18th  WIND, mph Avg. uncorrected wind speed: 12.9 Avg. corrected wind speed: 13.3 Prevailing wind direction: WNW at 22% Peak gust and direction: 66 W on 25th   SUNSHINE: Campbell-Stokes card minutes: 9132 minutes of possible 17148 or 53% Astronomical total minutes:   9476 minutes of possible 17766 or 53% Today's Observations: 7 A.M. Weather: Scattered cirrostratus Temperature: 37F; Dew Point: 32F; Wind: W at 11G15 kts Sea-level pressure: 29.95 ins. Hg, rising steadily Visibility: 40 miles, thin smoke layer in all directions 6-hr Max temp: 35F 6-hr Min temp: 33F 24-hr Precip:  0.00 ins. 24-hr snowfall: 1.0 ins. Snow depth: 8 ins.  BHO SA 1155 250 SCT 40 141/37/32/2711G15/995/ THN K  LYR ALQDS NEW SNW PST 24 HRS 1 IN/ 8/008 4/008 70053  53016 10035 20033  10 A.M. Weather: Broken cumulus Temperature: 40F; Dew Point: 29F; Wind: W at 17G25 kts    Sea-level pressure: 29.97 ins. Hg, falling then rising   Visibility: 70 miles 3-hr Precip: 0.00 ins.  BHO SA 1455 E45 BKN 70 148/40/29/2817G25/997/ 8/200 50007   1 P.M. Weather: Scattered cumulus and cirrus   Temperature: 47F; Dew Point: 21F; Wind: W at 12G25 kts, Peak Wind: 41 MPH (36 kts) W at 10:45 A.M.    Sea-level pressure: 29.91 ins. Hg, falling steadily Visibility: 70 miles 6-hr Max temp: 47F 6-hr Min temp: 35F 6-hr Precip:  0.00 ins. 6-hr snowfall: 0.0 ins. Snow depth: 7 ins.  BHO SA 1755 55 SCT 300 SCT 70 128/47/21/2712G25/991/  PK WND 2736/1545/ 8/102 4/007 58020 10047 20035  SUMMARY FOR SUNDAY, MARCH 10, 2019  TEMPERATURE (DEGREES F) MAX.....40   NORMAL.....42 MIN.....26   NORMAL.....24 MEAN....33   NORMAL.....33 DEPARTURE FROM 30-YEAR NORMAL..........................0 TOTAL DEPARTURE FOR THE MONTH........................-63 [-6.5 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............32   DEPARTURE..........0 TOTAL HEATING UNITS FOR THE MONTH.............391   DEPARTURE........+64 TOTAL HEATING UNITS FOR THE SEASON...........4877   DEPARTURE........-18 TOTAL HEATING UNITS LAST SEASON TO DATE......4420   DIFFERENCE......+457 PEAK GUST AND AVERAGE WIND SPEED (MPH)  PEAK WIND GUST FOR YESTERDAY....................32 ESE AT  9:12 A.M.                    AERO.........................23 S   AT  3:19 P.M.                    ASOS.........................32 E   AT  9:12 A.M.                     DAVIS........................32 E   AT  9:12 A.M. RMY 32 FASTEST MILE FOR YESTERDAY......................25 ESE AT  9:13 A.M.  MAXIMUM 2-MINUTE ASOS AVERAGE...................25 E   AT  9:13 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................26 E   AT  9:13 A.M. AVERAGE WIND SPEED AND DIRECTION..............12.2 ESE                    ASOS.......................12.3                    DAVIS......................11.1 SE [123 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.53  DEPARTURE.......+0.35                          ASOS..............0.56 TOTAL PRECIPITATION FOR THE MONTH..........2.85  DEPARTURE.......+1.10                          ASOS..............2.91 TOTAL PRECIPITATION FOR THE YEAR..........11.79  DEPARTURE.......+1.62                          ASOS.............11.96 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........1.0  DEPARTURE........+0.5 TOTAL SNOWFALL FOR THE MONTH...............21.0  DEPARTURE.......+15.9 TOTAL SNOWFALL FOR THE SEASON..............45.5  DEPARTURE........-6.6 PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 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 02/01 19/5/12/-14/0.00/0.0/552/95          29 W   AERO 28 W   RMY N/A 02/02 30/7/19/-7/0.00/0.0/318/55           32 WSW AERO 32 WSW RMY 31 02/03 38/27/33/+7/0.00/0.0/126/22          26 S   AERO 25 S   RMY N/A 02/04 59/33/46/+20/0.00/0.0/540/93         25 SSW AERO 28 SSW RMY N/A 02/05 62/39/51/+25/0.00/0.0/354/60         30 WNW AERO 29 WNW RMY 32 02/06 39/28/34/+8/0.35/T/396/67            24 NNW AERO 23 NNW RMY N/A 02/07 37/31/34/+7/0.35/0.0/000/00          28 ENE AERO 24 ENE RMY 28 02/08 51/27/39/+12/0.07/0.0/204/34         46 W   AERO 46 WNW RMY 51 02/09 32/20/26/-1/0.00/0.0/594/100         50 WNW AERO 52 WNW RMY 52 02/10 33/18/26/-1/0.00/0.0/510/85          24 WNW AERO 23 WNW RMY 25 02/11 34/21/28/+1/0.00/0.0/318/53          24 NNW AERO 23 NNW RMY 25 02/12 33/13/23/-4/0.90/2.8/000/00          32 E   AERO 30 E   RMY 26 02/13 39/29/34/+6/0.26/0.1/018/03          36 W   AERO 32 W   RMY 36 02/14 37/26/32/+4/0.00/0.0/594/97          44 WNW AERO 42 WNW RMY 45 02/15 49/29/39/+11/0.11/0.0/060/10         40 S   AERO 40 S   RMY 44 02/16 44/26/35/+7/0.00/0.0/504/82          25 NW  AERO 25 NW  RMY N/A 02/17 37/19/28/0/0.01/T/618/100            30 NNW AERO 25 NNW RMY N/A 02/18 30/16/23/-6/0.41/4.7/000/00          35 NW  AERO 36 NW  RMY 41 02/19 30/10/20/-9/0.00/0.0/618/99          35 NW  AERO 33 NW  RMY N/A 02/20 26/12/19/-10/0.12/0.3/000/00         16 WNW AERO 14 SSW RMY N/A 02/21 43/21/32/+3/0.33/0.7/294/47          36 W   AERO 33 W   RMY 38 02/22 43/30/37/+8/0.00/0.0/504/80          22 NW  AERO 21 NW  RMY 23 02/23 38/24/31/+1/0.00/0.0/336/53          18 NNW AERO 16 NNW RMY N/A 02/24 45/30/38/+8/0.40/0.0/000/00          41 W   AERO 37 W   RMY 47 02/25 37/25/31/+1/0.03/T/336/57            66 W   AERO 59 W   RMY M  02/26 29/14/22/-8/0.00/0.0/642/100         46 WNW AERO 39 WNW RMY 47 02/27 22/9/16/-15/0.10/1.2/180/28          35 WNW AERO 26 WNW RMY N/A 02/28 28/15/22/-9/0.17/2.3/486/75          22 NW  AERO 18 NW  RMY 22 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 Low temp since midnight is 33F; normal low is 25F ****Aerovane speed not working DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR MARCH 11 HIGH 65 IN 1967 LOW 4 IN 1939, 1960 PRECIP 2.11 INS. IN 1901 SNOWFALL 6.3 INS. IN 1934 PEAK GUST 66e MPH W IN 1980 RECORDS FOR MARCH 12 HIGH 72 IN 2012 LOW 2 IN 1885 PRECIP 2.87 INS. IN 1888 SNOWFALL 9.7 INS. IN 1959 PEAK GUST 66 MPH SE IN 1962 TODAY'S REPORT PREPARED BY: Benjamin Turner