BLUE HILL METEOROLOGICAL OBSERVATORYMILTON, MASSACHUSETTSELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARYMONDAY, MARCH 24, 2014ALL TIMES ARE IN EASTERN STANDARD TIME FULL FORCE OF ARCTIC AIR MASS ARRIVES IN EARLY HOURSNNW WINDS GUST TO 37 MPH AT 1:41 A.M. EDT THIS MORNINGTEMPERATURES FALL THROUGH TEENS TO 13F BY 6-7 A.M. EDTDEW POINTS FALL THROUGH SINGLE NUMBER BELOW ZERO A strong push of Arctic air arrived during the earlymorning hours of today with a gusty NNW wind to 37 MPH,temperatures falling through the teens and dew pointsgoing from single numbers above zero last evening tosingle numbers below zero this morning. The low of 13F this morning was well above the record lowof 6 above zero set this date in 1906.  The record lowmaximum for this date of 22F was established way back in 1888. Strong sunshine today has boosted our temperature to theupper 20's by early afternoon with a relative humidityat a low at 27%. Today's Observations: 7 A.M.Weather: Clear, cumulus/stratocumulus distant NE-SE offshoreTemperature: 15F; Dew Point: -3F; Wind: NW at 15 kts,Wind: Direction variability WNW-NSea-level pressure: 30.15 ins. Hg, rising then more slowlyVisibility: 60 miles, 70 miles NW, light distant haze6-hr max temp: 17F6-hr min temp: 13FSnow depth: Trace BHO SA 1155 CLR 60 209/15/-3/3215/015/ CU/SC DSNT NE-SE OFFSHRVSBY NW 70 LGT DSNT HZ GST 22 LTS PST HR WND 30V01/8/800 51013 10017 20013 10 A.M. Weather: Clear, cumulus/stratocumulus distant offshore NE-SE Temperature: 23F; Dew Point: -4F; Wind: NW at 9 kts,Wind: Direction variability W to NSea-level pressure: 30.14 ins. Hg, falling slightlyVisibility: 60 miles, BW 70, light distant haze  BHO SA 1455 CLR 60 205/23/-4/3209/014/ CU/SC DSNT OFFSHR NE-SEVSBY NW 70 LGT DSNT HZ WND 28V01/ 8/800 58004 1 P.M.Weather: Clear, few cumulus, stratocumulus offshore distant ENE-ESEWind: Direction variable WSW-NNWSea-level pressure: 30.08 ins. Hg, falling then more rapidlyVisibility: 60 miles, except 70 miles NW, light distant haze6-hr max temp: 30F 6-hr min temp: 15FBHO SA 1755 CLR 60 185/29/-1/2812/008/ FEW CU/SC DSNT ENE-ESE OFFSHRVSBY NW 70 LGT DSNT HZ WND GST 25 KTS PST HR WND 25V33/8/800 58020 10030 20015 WEATHER SUMMARY FOR SUNDAY, MARCH 23, 2014 TEMPERATURE (DEGREES F)MAX.....43    NORMAL.....46MIN.....20    NORMAL.....29MEAN....32    NORMAL.....38 DEPARTURE FROM 30-YEAR NORMAL.........................-6TOTAL DEPARTURE FOR THE MONTH........................-77 [-3.5 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN)TOTAL HEATING UNITS FOR YESTERDAY..............33  DEPARTURE..........+6TOTAL HEATING UNITS FOR THE MONTH.............786  DEPARTURE.........+76     TOTAL HEATING UNITS FOR THE SEASON...........5377  DEPARTURE........+100 TOTAL HEATING UNITS LAST SEASON TO DATE......4835  DIFFERENCE.......+542 PEAK GUST AND AVERAGE WIND SPEED (MPH)PEAK WIND GUST FOR YESTERDAY..................32 NNW  AT 11:14 P.M.                                   AERO.......................32 NNW  AT 11:14 P.M.                                             ASOS.......................32 NNW  AT 11:14 P.M.                                         DAVIS......................N/A                    RMY N/A   FASTEST MILE FOR YESTERDAY....................21 N    AT 11:14 P.M.            MAXIMUM 2-MINUTE ASOS AVERAGE.................22 N    AT 11:15 P.M.        MAXIMUM 2-MINUTE DAVIS AVERAGE................N/A                     AVERAGE WIND SPEED AND DIRECTION............11.8 NNW                     ASOS.....................11.9                        DAVIS....................10.1 WNW [290 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE.............-0.20                         ASOS..............0.00TOTAL PRECIPITATION FOR THE MONTH..........1.00  DEPARTURE.............-3.11                               ASOS..............1.01TOTAL PRECIPITATION FOR THE YEAR..........11.09  DEPARTURE.............-1.44                          ASOS.............11.55 SNOWFALL (INCHES) THROUGH THIS MORNING (EST)TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE..............-0.4TOTAL SNOWFALL FOR THE MONTH................2.5  DEPARTURE..............-7.9TOTAL SNOWFALL FOR THE SEASON..............84.3  DEPARTURE.............+26.9 PRELIMINARY CLIMATE SUMMARY FOR MARCH 2014 CALENDAR DAY DATADATA REPORTED:DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUSTAERO: Aerovane wind recording system gustRMY:  R.M. Young wind gust recording systemTSTM: Thunderstorm day (thunder heard some time during day)....: Data not yet available, records not finalized 3/1  34/12/23/-8/0.00/0.0/458/68          28 SSW AERO 29 MPH SSW RMY 303/2  37/28/33/2/T/T/014/02                22 SW  AERO 22 MPH SW  RMY 293/3  28/11/20/-12/0.00/0.0/000/00         29 NNW AERO 30 MPH NNW RMY N/A3/4  29/6/18/-14/0.00/0.0/444/65          17 SW  AERO 16 MPH SW  RMY 173/5  27/16/22/-10/0.02/0.3/000/00         21 NE  AERO 20 MPH N   RMY 233/6  26/7/17/-15/0.00/0.0/689/100         23 NNW AERO 23 MPH NNW RMY N/A 3/7  35/16/26/-7/0.00/0.0/449/65          18 SE  AERO 17 MPH SE  RMY 18 3/8  52/27/40/+7/0.00/0.0/673/97          26 NW  AERO 29 MPH NNW RMY 273/9  40/25/33/0/0.00/0.0/669/96           28 NW  AERO 29 MPH NW  RMY 293/10 42/26/34/+1/0.03/0.8/196/28          21 S   AERO 22 MPH S   RMY 273/11 56/34/45/+11/0.00/0.0/450/64         33 W   AERO 33 MPH W   RMY 34 3/12 53/34/44/+10/0.50/T/120/17           29 NNW AERO 30 MPH NNW RMY 303/13 33/12/23/-11/0.14/1.4/007/01         43 NW  AERO 45 MPH NW  RMY 453/14 37/10/24/-11/0.00/0.0/498/70         39 SSW AERO 41 MPH SSW RMY 423/15 54/35/45/+10/0.01/0.0/450/63         50 WNW AERO 58 MPH WNW RMY 543/16 34/21/28/-7/0.00/0.0/509/71          36 W   AERO 36 MPH WNW RMY 373/17 30/13/22/-14/0.00/0.0/562/78         25 N   AERO 26 MPH N   RMY 193/18 35/16/26/-10/0.00/0.0/701/97         18 ENE AERO 16 MPH ENE RMY 183/19 44/23/34/-2/T/0.0/.../..             24 E   AERO 23 MPH E   RMY 263/20 51/35/43/+6/0.30/0.0/.../..          36 W   AERO 37 MPH W   RMY 393/21 42/29/36/-1/0.00/0.0/.../..          40 W   AERO 41 MPH W   RMY 423/22 55/26/41/+4/T/0.0/.../..             52 WNW AERO 52 MPH WNW RMY 533/23 43/20/32/-6/0.00/0.0/.../..          32 NNW AERO 32 MPH NNW RMY N/A 3/24 morning low temp: 13F; the normal low is now 29F DAILY RECORDS FOR MARCH 2014None so far. DAILY EXTREMESTemperature and precipitation records back to 1885, andwind records back to 1940 (e = estimated): RECORDS FOR MARCH 24HIGH 70 IN 1920LOW 6 IN 1906PRECIP 1.51 INS. IN 1956SNOWFALL 12.3 INS. IN 1956PEAK GUST 71 MPH W IN 1968 RECORDS FOR MARCH 25HIGH 76 IN 1910LOW 8 IN 1888, 1956PRECIP 1.84 INS. IN 1909SNOWFALL 1.0 INS. IN 1912PEAK GUST 69 MPH SE IN 1969TODAY'S REPORT PREPARED BY: Robert Skilling