BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA   DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, MARCH 23, 2013 ALL TIMES ARE IN EASTERN STANDARD TIME   CLOUDS AND WIND PUSH COLD STREAK TO TEN DAYS   Clear sky and relatively calm winds this morning gave way to broken then scattered cloud cover and ~40 MPH gusts before noon. These conditions have held temperatures up on Great Blue Hill under 40F, making today the tenth day in a row with below average temperatures.     BLUE HILL SNOWIEST MARCHES, INCHES (1885-2013) 1) 52.0 in 1956 2) 42.2 in 1916 3) 41.4 in 2001 4) 41.0 in 1967 5) 37.2 in 2013  (through 3/21/2013) 6) 35.5 in 1993   Today's observations:   7 A.M. Weather: Clear, few cumulus fractus distant E-S, scattered stratocumulus distant WSW-WNW and NNW-ENE, Temperature: 29F; Dew Point: 22F; Wind: W at 14 kts, Sea-level pressure: 29.71 ins. Hg, rising then falling Visibility: 70 miles, light distant haze Snow depth: 3 inches 6-hour min. temp: 26F BHO SA 1155 CLR 70 062/29/22/2714/971/ FEW CUFRA DSNT E-S SCT SC DSNT WSW-WNW AND NNW-ENE LT DSNT HZ ALQDS/ 8//// 58005 40003 10029 20026   10 A.M. Weather: Broken cumulus all quadrants, few cirrus N-NE Temperature: 34F; Dew Point: 21F; Wind: WNW at 14 kts, Wind: gusting to 25 kts Sea-level pressure: 29.70 ins. Hg, rising then falling Visibility: 80 miles BHO SA 1455 50 BKN 80 057/34/21/2914G25/970/ FEW CC N-NE/ 8/402 58005   1 P.M. Weather: Broken cumulus all quadrants Temperature: 37F; Dew Point: 20F; Wind: W at 18G30 kts, Wind: Peak Gust 30 kts W at 12:55 P.M. Sea-level pressure: 29.67 ins. Hg, falling then steady Visibility: 80 miles 6-hour max. temp: 37F BHO SA 1755 60 BKN 80 047/37/20/2718G30/967/ PK WND 2730/55/ 8/4// 56010 10037 20029   WEATHER SUMMARY FOR FRIDAY, MARCH 22   TEMPERATURE (DEGREES F) MAX.....39     NORMAL.....46 MIN.....26     NORMAL.....28                          MEAN....33     NORMAL.....37     DEPARTURE FROM 30-YEAR NORMAL.......................-4 TOTAL DEPARTURE FOR THE MONTH.......................-1 [-0.1 DEGREE/DAY]   HEATING DEGREE DAYS  TOTAL HEATING UNITS FOR YESTERDAY............32   DEPARTURE............+4 TOTAL HEATING UNITS FOR THE MONTH...........682   DEPARTURE.............0 TOTAL HEATING UNITS FOR THE SEASON.........4802   DEPARTURE..........-448 TOTAL HEATING UNITS LAST SEASON TO DATE....4094   DIFFERENCE.........+708   PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY...............30 W   AT  4:42 P.M. *                    AERO....................29 W   AT  4:42 P.M. *                    ASOS....................32 WSW AT  4:43 P.M.                    DAVIS...................32 WSW AT  4:42 P.M. RMY: 34 THE FASTEST MILE FOR YESTERDAY.............24 W   AT  3:38 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE..............23 W   AT  4:44 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE.............21 W   AT  4:29 P.M. AVERAGE WIND SPEED AND DIRECTION..........13.2 WNW                    ASOS...................12.5                    DAVIS..................11.2 WNW [287 deg] * last of several occurrences...   PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE...........-0.19                          ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........5.58  DEPARTURE...........+1.67                          ASOS..............5.74 TOTAL PRECIPITATION FOR THE YEAR..........13.97  DEPARTURE...........+1.64                          ASOS..............N/A* *ASOS malfunctioned during storm on 2/8-9, leading to erroneous totals                         SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M.........0.0   DEPARTURE............-0.3 TOTAL SNOWFALL FOR THE MONTH..............37.2   DEPARTURE...........+27.2 TOTAL SNOWFALL FOR THE SEASON.............98.4   DEPARTURE...........+41.4   PRELIMINARY CLIMATE SUMMARY FOR MARCH 2013 CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane wind recording system gust RMY:  RMY = R.M. Young wind gust recording system added 8/9/2011 TSTM: Thunderstorm day (thunder heard some time during day) ....: Data not yet available, records not finalized   3/1  39/33/36/+5/0.00/0.0/047/07     25 NNW AERO 24 MPH NNW RMY 28 3/2  42/30/36/+5/0.00/0.0/400/59     18 NW  AERO 16 MPH NW  RMY 21 3/3  42/30/36/+4/0.01/0.2/034/05     17 WNW AERO 15 MPH WNW RMY N/A 3/4  39/26/33/+1/T/T/328/48          32 NW  AERO 33 MPH WNW RMY 37 3/5  43/30/37/+5/0/0/123/18          27 WNW AERO 24 MPH WNW RMY N/A 3/6  37/33/35/+3/0.19/0.3/000/00     47 NE  AERO 46 MPH NE  RMY 51 3/7  34/29/32/-1/1.36/11.5/000/00    45 NE  AERO 45 MPH NE  RMY 47 3/8  37/28/33/0/1.89/18.0/000/00     41 NNE AERO 39 MPH NNW RMY 45 3/9  40/29/35/+2/0.00/0.0/677/97     29 N   AERO 23 MPH N   RMY 28 3/10 40/27/34/+1/0.00/0.0/372/53     21 S   AERO 17 MPH S   RMY N/A 3/11 50/32/41/+7/0.00/0.0/099/14     27 S   AERO 25 MPH S   RMY N/A 3/12 52/39/46/+12/0.51/0.0/000/00    45 S   AERO 46 MPH S   RMY 47 3/13 50/33/42/+8/T/0.0/674/95        32 WNW AERO 32 MPH WNW RMY 34 3/14 34/20/27/-8/0.00/0.0/014/02     37 W   AERO 37 MPH NW  RMY 38 3/15 39/17/28/-7/0.00/0.0/408/57     35 NW  AERO 37 MPH W   RMY 34 3/16 39/25/32/-3/0.00/0.0/352/49     23 NW  AERO 18 MPH WNW RMY 20 3/17 38/23/31/-5/0.00/0.0/665/95     32 WNW AERO 28 MPH WNW RMY 34 3/18 37/16/27/-9/0.14/1.1/557/77     27 NNW AERO 23 MPH NNW RMY N/A 3/19 35/26/31/-5/1.45/5.8/000/00     42 E   AERO 39 MPH E   RMY 43  ` 3/20 37/22/30/-7/0.00/0.0/.../..     37 W   AERO 33 MPH W   RMY 38 3/21 36/27/32/-5/0.03/0.3/.../..     15 NNW AERO  8 MPH NW  RMY N/A 3/22 39/26/33/-4/0.00/0.0/.../..     30 W   AERO 29 MPH W   RMY 34   3/23 the morning low temp: 26F; the normal low is now 29F   DAILY RECORDS FOR MARCH 2013 3/7 - NEW DAILY RECORD SNOWFALL OF 11.5 INCHES;       surpasses the previous record of 11.1 inches in 1967 3/8 - NEW DAILY RECORD SNOWFALL OF 18.0 INCHES;       surpasses the previous record of 8.3 inches in 1941   DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):   RECORDS FOR MARCH 23 HIGH 78 IN 1938 LOW 3 IN 1934 PRE 2.52 INS. IN 2010 SNOW 3.0 INS. IN 1977 WIND 78e MPH W IN 1940   RECORDS FOR MARCH 24 HIGH 70 DEGREES IN 1920 LOW 6 DEGREES IN 1906 PRECIP 1.51 INS. IN 1956 SNOWFALL 12.3 INS. IN 1956 PEAK GUST 71 MPH W IN 1968   TODAY'S REPORT PREPARED BY: Forrest Iwanik