BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, MARCH 24, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
 
FULL FORCE OF ARCTIC AIR MASS ARRIVES IN EARLY HOURS
NNW WINDS GUST TO 37 MPH AT 1:41 A.M. EDT THIS MORNING
TEMPERATURES FALL THROUGH TEENS TO 13F BY 6-7 A.M. EDT
DEW POINTS FALL THROUGH SINGLE NUMBER BELOW ZERO
 
A strong push of Arctic air arrived during the early
morning hours of today with a gusty NNW wind to 37 MPH,
temperatures falling through the teens and dew points
going from single numbers above zero last evening to
single numbers below zero this morning.
 
The low of 13F this morning was well above the record low
of 6 above zero set this date in 1906.  The record low
maximum for this date of 22F was established way back 
in 1888.
 
Strong sunshine today has boosted our temperature to the
upper 20's by early afternoon with a relative humidity
at a low at 27%.
 
Today's Observations:
 
7 A.M.
Weather: Clear, cumulus/stratocumulus distant NE-SE offshore
Temperature: 15F; Dew Point: -3F; Wind: NW at 15 kts,
Wind: Direction variability WNW-N
Sea-level pressure: 30.15 ins. Hg, rising then more slowly
Visibility: 60 miles, 70 miles NW, light distant haze
6-hr max temp: 17F
6-hr min temp: 13F
Snow depth: Trace 
BHO SA 1155 CLR 60 209/15/-3/3215/015/ CU/SC DSNT NE-SE OFFSHR
VSBY 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 N
Sea-level pressure: 30.14 ins. Hg, falling slightly
Visibility: 60 miles, BW 70, light distant haze  
BHO SA 1455 CLR 60 205/23/-4/3209/014/ CU/SC DSNT OFFSHR NE-SE
VSBY NW 70 LGT DSNT HZ WND 28V01/ 8/800 58004
 
1 P.M.
Weather: Clear, few cumulus, stratocumulus offshore distant ENE-ESE
Wind: Direction variable WSW-NNW
Sea-level pressure: 30.08 ins. Hg, falling then more rapidly
Visibility: 60 miles, except 70 miles NW, light distant haze
6-hr max temp: 30F 
6-hr min temp: 15F
BHO SA 1755 CLR 60 185/29/-1/2812/008/ FEW CU/SC DSNT ENE-ESE OFFSHR
VSBY 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.....46
MIN.....20    NORMAL.....29
MEAN....32    NORMAL.....38
 
DEPARTURE FROM 30-YEAR NORMAL.........................-6
TOTAL DEPARTURE FOR THE MONTH........................-77 [-3.5 DEGREES/DAY]
 
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............33  DEPARTURE..........+6
TOTAL 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..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........1.00  DEPARTURE.............-3.11      
                         ASOS..............1.01
TOTAL 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..............-0.4
TOTAL SNOWFALL FOR THE MONTH................2.5  DEPARTURE..............-7.9
TOTAL SNOWFALL FOR THE SEASON..............84.3  DEPARTURE.............+26.9
 
PRELIMINARY CLIMATE SUMMARY FOR MARCH 2014 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO 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
 
3/1  34/12/23/-8/0.00/0.0/458/68          28 SSW AERO 29 MPH SSW RMY 30
3/2  37/28/33/2/T/T/014/02                22 SW  AERO 22 MPH SW  RMY 29
3/3  28/11/20/-12/0.00/0.0/000/00         29 NNW AERO 30 MPH NNW RMY N/A
3/4  29/6/18/-14/0.00/0.0/444/65          17 SW  AERO 16 MPH SW  RMY 17
3/5  27/16/22/-10/0.02/0.3/000/00         21 NE  AERO 20 MPH N   RMY 23
3/6  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 27
3/9  40/25/33/0/0.00/0.0/669/96           28 NW  AERO 29 MPH NW  RMY 29
3/10 42/26/34/+1/0.03/0.8/196/28          21 S   AERO 22 MPH S   RMY 27
3/11 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 30
3/13 33/12/23/-11/0.14/1.4/007/01         43 NW  AERO 45 MPH NW  RMY 45
3/14 37/10/24/-11/0.00/0.0/498/70         39 SSW AERO 41 MPH SSW RMY 42
3/15 54/35/45/+10/0.01/0.0/450/63         50 WNW AERO 58 MPH WNW RMY 54
3/16 34/21/28/-7/0.00/0.0/509/71          36 W   AERO 36 MPH WNW RMY 37
3/17 30/13/22/-14/0.00/0.0/562/78         25 N   AERO 26 MPH N   RMY 19
3/18 35/16/26/-10/0.00/0.0/701/97         18 ENE AERO 16 MPH ENE RMY 18
3/19 44/23/34/-2/T/0.0/.../..             24 E   AERO 23 MPH E   RMY 26
3/20 51/35/43/+6/0.30/0.0/.../..          36 W   AERO 37 MPH W   RMY 39
3/21 42/29/36/-1/0.00/0.0/.../..          40 W   AERO 41 MPH W   RMY 42
3/22 55/26/41/+4/T/0.0/.../..             52 WNW AERO 52 MPH WNW RMY 53
3/23 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 2014
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: Robert Skilling