BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, MARCH 15, 2015 ALL TIMES ARE IN EASTERN STANDARD TIME RAW AND OVERCAST WITH SNOW AND RAIN SHOWERS EXPECTED THIS AFTERNOON Temperatures didn't get below freezing last night as overcast conditions persisted through the 10:00 AM observation with a few breaks in the overcast. Light snow and rain showers began to impact the area just before the 10:00 AM observation and intermittent precipitation continued throughout the day. Temperatures rose to 41 at the 2:00 observation as rain and snow showers continued. Seasonal snowfall remains at 143.4 inches, just 1.0 inch below the snowiest season on record set in 1995-1996. For more information about this historic winter, visit our web site at bluehill.org. The average snow depth remains at 21 inches as of this morning. This is the 41st consecutive day with 20 inches or more of snow on the ground which is firmly in second place all time. The record is 53 days set back in 1948. BHO Greatest Seasonal Snowfall, inches (1885-2015): 1) 144.4 in 1995-1996 2) 143.4 in 2014-2015 (through 1 PM March 15th) 3) 136.0 in 1947-1948 4) 119.4 in 2004-2005 5) 113.1 in 2002-2003 6) 111.5 in 1915-1916 7) 109.6 in 1966-1967 8) 106.8 in 1955-1956 9) 103.4 in 1903-1904 10) 102.5 in 1922-1923 BHO Longest Duration of 20"+ Snow Depth, (1885-2015): 1) 53 days, 27 Dec, 1947 - 17 Feb, 1948 2) 41 days, 3 Feb - 15 Mar, 2015 (through 1 PM March 15th) 3) 34 days, 5 Feb - 9 Mar, 1920 34 days, 7 Feb - 12 Mar, 1978 5) 23 days, 25 Feb - 19 Mar, 1969 6) 21 days, 27 Jan - 16 Feb, 2011 7) 11 days, 15-25 Mar, 1916 11 days, 5-15 Jan, 1961 Today's Observations: 7 A.M. Weather: Overcast Stratocumulus, Breaks in overcast distance SSW-WNW Temperature: 34F; Dew Point: 33F; Wind: WNW at 12 kts Sea-level pressure: 29.58 ins. Hg, Rising Steadily Visibility: 40 miles, except 55 miles WNW, 25 NE-E Thin fog 6-hr Max temp: 34F 6-hr Min temp: 33F 24-hr precip: 0.84 24-hr snowfall: None Snow depth: 21 inches BHO SA 1155 E43 OVC 40 020/34/33/3012/958/ FEW LWR SC BINOVC DSNT SSW-WNW VSBY WNW 55 NE-E 25 THN FG/ 8/5// 4/021 52003 MANUAL 70084 ASOS MMMM 10034 20033 10 A.M. Weather: Very light snow, Few Stratocumulus/Cumulus S-W Overcast Nimbostratus, small break in overcast SSW-WSW Temperature: 36F; Dew Point: 32F; Wind: WNW at 11 kts, Sea-level pressure: 29.58 ins. Hg, rising slightly Visibility: 30 miles, S 40 NE-E 12 snow 3-hr precip: TRACE BHO SA 1455 E55 OVC 30S- 021/36/34/2911/958/ FEW LWR SC/CU S-W BINOVC DSNT SSW-WSW VSBY S 40 NE-E 12 SB53/ 8/82/ 53001 6000/ 1 P.M. Weather: Light rain and snow showers, Few cumulus fractus, Broken cumulus, Overcast Nimbostratus, thin spots in overcast, sun dimly visible Temperature: 41F; Dew Point: 38F; Wind: WNW at 13 kts gusting to 21 Sea-Level Pressure: 29.60 ins. Hg, rising slightly Visibility: 35 miles, WNW-NNW 30 miles very light rain and snow showers 6-hr Max temp: 41F 6-hr Min temp: 34F 6-hr precip: T BHO SA 1755 E40 OVC 35RW-SW- 024/41/38/2913G21/960/ FEW LWR CU ALQDS THN SPTS INOVC VSBY WNW-NNE 30 RW-SW-CTD/ 8/72/ 52003 MANUAL 6000/ 10041 20034 SUMMARY FOR SATURDAY, MARCH 14, 2015 TEMPERATURE (DEGREES F) MAX.....41 NORMAL.....44 MIN.....29 NORMAL.....26 MEAN....35 NORMAL.....35 DEPARTURE FROM 30-YEAR NORMAL............................0 TOTAL DEPARTURE FOR THE MONTH...........................-26 [-1.9 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............30 DEPARTURE...........+5 TOTAL HEATING UNITS FOR THE MONTH.............477 DEPARTURE..........+26 TOTAL HEATING UNITS FOR THE SEASON...........5185 DEPARTURE.........+166 TOTAL HEATING UNITS LAST SEASON TO DATE......5099 DIFFERENCE.........+86 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY..................23 SSW AT 1:44 A.M. ASOS.......................N/A DAVIS......................N/A RMY 23 FASTEST MILE FOR YESTERDAY....................16 SSW AT 1:32 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE.................N/A MAXIMUM 2-MINUTE DAVIS AVERAGE................N/A AVERAGE WIND SPEED AND DIRECTION............11.1 SSW ASOS.....................N/A DAVIS.....................10.8 S [182 degrees] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.84 DEPARTURE.....+0.67 ASOS..............N/A TOTAL PRECIPITATION FOR THE MONTH..........1.59 DEPARTURE.....-0.65 ASOS..............N/A TOTAL PRECIPITATION FOR THE YEAR..........12.93 DEPARTURE.....+2.40 ASOS..............N/A *** *** ASOS annual totals not available due to erroneous readings SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0 DEPARTURE......-0.4 TOTAL SNOWFALL FOR THE MONTH................5.9 DEPARTURE......-1.0 TOTAL SNOWFALL FOR THE SEASON.............143.4 DEPARTURE.....+89.5 PRELIMINARY CLIMATE SUMMARY FOR MARCH CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOWFALL/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY 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 3/1 29/14/22/-9/..../.../000/00 25 SSW RMY 25 3/2 35/22/29/-2/..../.../480/71 44 WNW RMY 48 3/3 32/13/23/-9/..../2.8/340/50 33 S RMY N/A 3/4 41/32/37/+5/..../.../000/00 33 SW RMY 36 3/5 36/16/26/-6/0.02/0.2/000/00 28 NW RMY 29 3/6 26/5/16/-16/0.00/0.0/681/99 28 NW RMY 25 3/7 38/13/26/-7/0.00/0.0/.../.. 30 WSW RMY 30 3/8 41/25/33/0/T/T/.../.. 38 WNW RMY 41 3/9 45/28/37/+4/0.00/0.0/.../.. 40 W RMY 39 3/10 52/32/42/+9/..../0.0/.../.. 28 S RMY 27 3/11 55/38/47/+13/..../0.0/.../.. 37 WNW RMY N/A 3/12 38/23/31/-3/0.00/0.0/.../.. 44 N RMY 48 3/13 40/18/29/-5/0.00/0.0/.../.. 23 SSW RMY 26 3/14 41/29/35/0/0.84/0.0/000/00 23 SSW RMY 23 3/15 morning low temp: 33F since midnight, normal low is now 26F DAILY RECORDS FOR MARCH 2015 -NONE SO FAR. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR MARCH 15 HIGH 80 IN 1990 LOW 6 IN 1993 PRE 2.86 INS. IN 2010 SNOW 12.0 INS. 1967 WIND 73e MPH ESE IN 1940 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 TODAY'S REPORT PREPARED BY: Robert Skilling/Robert Millette