BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, MARCH 27, 2013
ALL TIMES ARE IN EASTERN STANDARD TIME
 
AN END TO 12-DAY STREAK OF BELOW NORMAL TEMPERATURES
TUESDAY AVERAGE JUST 1 DEGREE ABOVE NORMAL AT 40F
OVERNIGHT LOW THIS MORNING OF 30F RIGHT ON THE NORMAL
 
The 12-day stretch of daily below normal temperatures came to
an end with yesterday's average temperature of 40F which was
one degree above normal. This was the longest stretch of
below normal temperatures since March 20 - April 1, 2011.
Temperatures are again running near normal today starting
out with 30F equaling the normal low temperature for
this date.
 
 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) 37.8 in 2013  (through 700 A.M. EST on 3/27/2013)
6) 35.5 in 1993
 
Today's observations:
 
7 A.M.
Weather:  Clear, few altocumulus, altocumulus lenticularis,
distant WNW-NW and distant N and distant ENE-E
Temperature: 34F; Dew Point: 21F; Wind: WNW at 11 kts,
Sea-level pressure: 29.80 ins. Hg, falling then rising
Visibility: 60 miles, light distant haze
6-hour min. temp: 30F
Snow depth: trace (scattered patches) (large patch in clearing NE)
BHO SA 1155 CLR 60 091/34/21/3011/980/ FEW AC/ACSL DSNT WNW-NW/N/
ENE-E/LGT DSNT HZ/ 8/040 53009 10034 20030
 
10 A.M.
Weather: Clear, lone small cumulus distant NNW, small cumulus forming vicinity of
station SE-S, few altocumulus and altocumulus lenticularis distant W-NNE,
lone patch of cirrus distant W
Temperature: 46F; Dew Point: 24F; Wind: NW at 9 kts,
Wind: Direction variable NW-NNE
Sea-level pressure: 29.80 ins. Hg, falling slightly
Visibility: 70 miles, light distant haze
BHO SA 1455 CLR 70 088/46/24/3209/980/ LONE CU DSNT NNW
SML CU FRMG VC SE-S FEW AC/ACSL DSNT W-NNE LONE PTCH CI DSNT W
LGT DSNT HZ/ 8/141 58003
 
1 P.M.
Weather: Broken stratocumulus cumulogenitus, overcast altocumulus
cumulogenitus, few lower moderate cumulus, stratocumulus dark bases,
break in overcast, clear sky band offshore distant NE-SE, virga mostly distant
ESE-SW-W 
Temperature: 49F; Dew Point: 22F; Wind: NNW at 9 kts,
Wind: Direction variable WNW-NNE
Sea-level pressure: 29.76 ins. Hg, falling then more slowly
Visibility: 75 miles, light distant haze 
6-hour max. temp: 51F
BHO SA 1755 E70 BKN 85 OVC 75 077/49/22/3309/976/ FEW LWR MDT CU ALQDS
SCCU DRK BASES ACCU ALQDS VIRGA MSTLY DSNT ESE-SW-W BINOVC CLR SKY
BND OFFSHR DSNT NE-SE WND 29V02/ 8/26/ 56011 10051 20034
 
WEATHER SUMMARY FOR TUESDAY, MARCH 26
 
TEMPERATURE (DEGREES F)
MAX.....48     NORMAL.....48
MIN.....31     NORMAL.....30                         
MEAN....40     NORMAL.....39  
 
DEPARTURE FROM 30-YEAR NORMAL.......................+1
TOTAL DEPARTURE FOR THE MONTH.......................-7 [-0.5 DEGREE/DAY]
 
HEATING DEGREE DAYS 
TOTAL HEATING UNITS FOR YESTERDAY............25   DEPARTURE............-1
TOTAL HEATING UNITS FOR THE MONTH...........794   DEPARTURE............+4
TOTAL HEATING UNITS FOR THE SEASON.........4914   DEPARTURE..........-443
TOTAL HEATING UNITS LAST SEASON TO DATE....4158   DIFFERENCE.........+756
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...............25 NW  AT  1:32 P.M. *  RMY: 25 
                   AERO....................23 N   AT 12:29 A.M.
                   ASOS....................25 N   AT 12:49 A.M.
                   DAVIS...................24 N   AT 12:29 A.M. RMY: N/A
THE FASTEST MILE FOR YESTERDAY.............20 NW  AT 12:56 P.M.  
MAXIMUM 2-MINUTE ASOS AVERAGE..............18 NW  AT  1:34 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE.............18 NW  AT  1:33 P.M.
AVERAGE WIND SPEED AND DIRECTION.........11.1 NW
                   ASOS..................10.7
                   DAVIS..................9.8 NW [320 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..........5.63  DEPARTURE...........+0.95
                         ASOS..............5.79
TOTAL PRECIPITATION FOR THE YEAR..........14.02  DEPARTURE...........+0.92
                         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..............37.8   DEPARTURE...........+26.6
TOTAL SNOWFALL FOR THE SEASON.............99.0   DEPARTURE...........+40.8
 
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/-7/0.00/0.0/628/86     37 W   AERO 33 MPH W   RMY 38
3/21 36/27/32/-5/0.03/0.3/154/21     15 NNW AERO  8 MPH NW  RMY N/A
3/22 39/26/33/-4/0.00/0.0/492/67     30 W   AERO 29 MPH W   RMY 34
3/23 41/28/35/-3/0.00/0.0/649/88     40 W   AERO 38 MPH W   RMY 42
3/24 45/28/37/-1/0.00/0.0/704/95     29 WNW AERO 28 MPH WNW RMY N/A
3/25 40/31/36/-2/T/T/.../..          33 NNE AERO 31 MPH NE  RMY 38
3/26 48/31/40/+1/0.06/0.5/.../..     25 NW  AERO 23 MPH N   RMY 25
 
3/27 the morning low temp: 30F; the normal low is now 30F
 
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 27
HIGH 78 IN 1998
LOW 12 IN 1975
PRECIP 1.05 INS. IN 1913
SNOWFALL 6.6 INS. IN 1959
PEAK GUST 62 MPH NW IN 1965, SE IN 1992
 
RECORDS FOR MARCH 28
HIGH 86 IN 1998
LOW 7 IN 1923
PRECIP 2.31 INS. IN 1932
SNOWFALL 3.0 INS. IN 1932
PEAK GUST 60e MPH NW IN 1944, 60 WSW IN 1991
 
TODAY'S REPORT PREPARED BY: Robert Skilling