BLUE HILL METEOROLOGICAL OBSERVATORY  MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY TUESDAY, MARCH 24, 2015      ALL TIMES ARE IN EASTERN STANDARD TIME   COLD LINGERS FOR ONE MORE DAY, TEMPERATURES FOR THE MONTH NOW 4F DEGREES BELOW NORMAL   Mostly cloudy conditions with high cirrus overhead present at this morning's 7:00 AM EST, when an overnight minimum  temperature of 16F was recorded. Thin fog and haze were present as well, which somewhat limited visibility.  Yesterday's maximum temperature reading of 31F was 15 degrees below the normal, and also 15 degrees below the daily average temperature. Following one of the coldest February's on record here at BHO, March has been significantly colder than normal, with temperatures averaging more than 4 degrees below the norm. By the 1:00 PM EST observation high cirrus clouds were invading once more and were becoming dense. Visibility had dropped from as much as 70 miles to 40 miles under hazy conditions. A maximum temperature reading of 35F had been recorded.  For more information about this historic winter, visit our  web site at bluehill.org.   BHO Greatest Seasonal Snowfall, inches (1885-2015): 1) 145.8 in 2014-2015 (through 1 PM March 24th) 2) 144.4 in 1995-1996 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 Today's Observations: 7 A.M. Weather: Broken cirrus, broken cirrocumulus, few stratocumulus distant offshore NE-SE Temperature: 19F; Dew Point: 7F; Wind: N at 8 kts Sea-level pressure: 30.31 ins. Hg, rising then more slowly Visibility: 70 miles, thin fog 6-hr Max temp: 20F 6-hr Min temp: 16F 24-hr precip: none 24-hr snowfall: none Snow depth: 15 inches  BHO SA 1155 E220 BKN 280 BKN 70 264/19/7/3508/031/ FEW SC DSNT OFFSHR NE-SE THN FG ALQDS/ 8/509 4/015 51012 10020 20016 10 A.M.  Weather: Clear, few cumulus E, few cirrus distant E-SSE Temperature: 29F; Dew Point: 16F; Wind: estimated N at 5 kts Wind Speed: Light Sea-level pressure: 30.34 ins. Hg, rising, then steady Visibility: 50 miles, hazy BHO SA 1455 CLR 50 274/29/16/E3605/034/ FEW CU E FEW CI E-SSE HAZY WND LGT/ 8/101 51010 1 P.M. Weather: Broken dense cirrus Temperature: 35F; Dew Point: 19F; Wind: estimated NW at 3 kts Wind Speed: Light  Sea-Level Pressure: 30.31 ins. Hg, steady, then falling Visibility: 40 miles, hazy 6-hr Max temp: 35F  6-hr Min temp: 19F BHO SA 1755 E250 BKN 40 264/35/19/E3103/031/ HAZY WND LGT/ 8/004 58010 10035 20019   SUMMARY FOR MONDAY, MARCH 23, 2015 TEMPERATURE (DEGREES F) MAX.....31   NORMAL.....46 MIN.....14   NORMAL.....29 MEAN....23   NORMAL.....38 DEPARTURE FROM 30-YEAR NORMAL...........................-15 TOTAL DEPARTURE FOR THE MONTH...........................-92 [-4.4 DEGREES/DAY]    HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............42  DEPARTURE..........+15 TOTAL HEATING UNITS FOR THE MONTH.............801  DEPARTURE..........+91      TOTAL HEATING UNITS FOR THE SEASON...........5509  DEPARTURE.........+232 TOTAL HEATING UNITS LAST SEASON TO DATE......5277  DIFFERENCE........+132 PEAK GUST AND AVERAGE WIND SPEED (MPH)  PEAK WIND GUST FOR YESTERDAY..................36  WNW AT  11:18 A.M.                    ASOS.......................35  WNW AT  11:20 A.M.                      DAVIS......................34  WNW AT  11:19 A.M. RMY 35 FASTEST MILE FOR YESTERDAY....................27  WNW AT  11:19 A.M.   MAXIMUM 2-MINUTE ASOS AVERAGE.................26  WNW AT  11:21 A.M.     MAXIMUM 2-MINUTE DAVIS AVERAGE................25  WNW AT  11:21 A.M.      AVERAGE WIND SPEED AND DIRECTION.............15.0 WNW                      ASOS......................14.3                        DAVIS.....................12.9 WNW [294 degrees]  * Last of several occurrences...   PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00   DEPARTURE.....-0.20                          ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........1.96   DEPARTURE.....-1.98                            ASOS..............N/A  TOTAL PRECIPITATION FOR THE YEAR..........13.30   DEPARTURE.....+1.07                          ASOS..............N/A ***  *** ASOS monthly and 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................8.3  DEPARTURE......-2.1 TOTAL SNOWFALL FOR THE SEASON.............145.8  DEPARTURE.....+88.4  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/-7/0.00/0.0/567/82              30 WSW RMY 30  3/8  41/25/33/0/T/T/208/30                    38 WNW RMY 41 3/9  45/28/37/+4/0.00/0.0/565/81              40 W   RMY 39 3/10 52/32/42/+9/..../0.0/252/36              28 S   RMY 27 3/11 55/38/47/+13/..../0.0/604/86             37 WNW RMY N/A 3/12 38/23/31/-3/0.00/0.0/677/96              44 N   RMY 48 3/13 40/18/29/-5/0.00/0.0/581/82              23 SSW RMY 26 3/14 41/29/35/0/0.84/0.0/000/00               23 SSW RMY 23 3/15 41/24/33/-2/0.03/0.6/021/03              39 NW  RMY 39 3/16 44/23/34/-1/0.00/0.0/516/72              28 NW  RMY N/A 3/17 48/25/37/+1/0.17/T/173/24                53 NW  RMY 63 3/18 30/19/25/-11/0.00/0.0/700/97             51 NW  RMY 56 3/19 31/15/23/-13/0.00/0.0/696/96             37 NW  RMY 39   3/20 32/19/26/-11/..../.../000/00             17 NNW RMY 15 3/21 41/25/33/-4/..../.../.../..              36 WNW RMY N/A  3/22 36/17/27/-10/0.00/0.0/.../..             50 W   RMY 55 3/23 31/14/23/-15/0.00/0.0/.../..             36 WNW RMY 35 3/24 Low since midnight is 16F normal low is 29F 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 24 HIGH 70 IN 1920 LOW 6 IN 1906 PRECIP 1.51 INS. IN 1956 SNOWFALL 12.3 INS. IN 1956 PEAK GUST 71 MPH W IN 1968 RECORDS FOR MARCH 25 HIGH 76 IN 1910 LOW 8 IN 1888, 1956 PRECIP 1.84 INS. IN 1909 SNOWFALL 1.0 INS. IN 1912 PEAK GUST 69 MPH SE IN 1969 TODAY'S REPORT PREPARED BY: Brian Fitzgerald