BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, JANUARY 19, 2013   
ALL TIMES ARE IN EASTERN STANDARD TIME
 
WARM AND WINDY, COLD STREAK OF 1 DAY SNAPPED!
 
Yesterday's chilly average temperature of 22 F (3 F below the 30 year
average) marked only the third day of the nineteen thus far in January
below normal. Temperatures steadily rose overnight to a balmy 31 F
for this morning's 7:00 A.M. reading, and continued upwards of 45 F in
the early afternoon. This January's daily temperature has been 7.6 F
warmer than the 30 year average.
 
Wind today has been consistent between 20 and 25 MPH from the SW, with
several gusts up to 45 MPH.
 
 
Today's observations:
 
7 A.M.
Weather: Broken altocumulus, few cumulus fractus distant offshore
ENE-S, distant dense cirrus WSW-N-E
Temperature: 31F; Dew Point: 23F; Wind: SSW at 24G32 kts,
Wind: Peak wind of 32 kts from the SSW at 6:49 A.M.
Sea-level pressure: 30.20 ins. Hg, falling then falling more slowly
Visibility: 35 miles, distant haze
Snow depth: 1 inch
6-hour min temp: 21F
BHO SA 1155 E110 BKN 35 228/31/23/2024G32/020/ FEW CUFRA DSNT OFFSHR 
ENE-S DSNT DNS CI WSW-N-E DSNT HZ ALQDS/ 8/132 PK WND 2032/49 4/001 
56022 10031 20021
 
10 A.M.
Weather: Broken altocumulus, few cumulus fractus distant offshore ESE-S
Temperature: 38F; Dew Point: 27F; Wind: SSW at 24G36 kts,
Wind: Direction variable SSE-WSW
Sea-level pressure: 30.16 ins. Hg, falling then falling more slowly
Visibility: 50 miles, distant haze
BHO SA 1455 E100 BKN 50 214/38/27/2124G36/016/ FEW CUFRA DSNT ESE-S
DSNT HZ ALQDS PK WND 2136/46 WND 16V24/ 8/130 56014
   
1 P.M.
Weather: Broken altocumulus, dense cirrus distant W-N-ESE
Temperature: 45F; Dew Point: 25F; Wind: SSW at 24G33 kts,
Wind: Peak wind of 33 kts. from the SSW at 12:50 P.M.
Wind: Direction variable S-WSW
Sea-level pressure: 30.04 ins. Hg, falling then falling rapidly
Visibility: 60 miles, light distant haze
6-hour max temp: 45F
6-hour min temp: 31F
BHO SA 1755 E110 BKN 60 174/45/25/2124G33/004/ DNS CI DSNT W-N-ESE
LT DSNT HZ ALQDS PK WND 2133/50 WND 17V24/ 8/032 58040 10045 20031
 
WEATHER SUMMARY FOR FRIDAY, JANUARY 18
 
TEMPERATURE (DEGREES F)
MAX.....28      NORMAL.....33
MIN.....16      NORMAL.....17                        
MEAN....22      NORMAL.....25
 
DEPARTURE FROM 30-YEAR NORMAL.......................-3
TOTAL DEPARTURE FOR THE MONTH.....................+136 [+7.6 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY............43    DEPARTURE..........+3
TOTAL HEATING UNITS FOR THE MONTH...........573    DEPARTURE........-135
TOTAL HEATING UNITS FOR THE SEASON.........2601    DEPARTURE........-411
TOTAL HEATING UNITS LAST SEASON TO DATE....2356    DIFFERENCE.......+245
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...............39 NW  AT  1:03  P.M.
                   AERO....................39 NW  AT  12:59 P.M.
                   ASOS....................43 N   AT  1:03  P.M.
                   DAVIS...................41 NW  AT  1:03  P.M. RMY 43
THE FASTEST MILE FOR YESTERDAY.............29 WNW AT  1:01  P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE..............29 NW  AT  1:04  P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE.............29 W   AT  1:04  P.M.
AVERAGE WIND SPEED AND DIRECTION.........13.0 N
                   ASOS..................11.9
                   DAVIS.................11.8 WNW  [303 deg.] 
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M... 0.00   DEPARTURE..........-0.14
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........0.63   DEPARTURE..........-1.94
                         ASOS..............0.60
TOTAL PRECIPITATION FOR THE YEAR...........0.63   DEPARTURE..........-1.94
                         ASOS..............0.60
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M.........0.0   DEPARTURE............-0.5
TOTAL SNOWFALL FOR THE MONTH...............3.6   DEPARTURE............-6.5
TOTAL SNOWFALL FOR THE SEASON.............19.0   DEPARTURE............-7.1   
 
PRELIMINARY CLIMATE SUMMARY FOR JANUARY 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
 
1/1   35/18/27/0/0.00/0.0/313/57      44 WNW AERO 44 MPH WNW RMY 45
1/2   29/11/20/-7/0.00/0.0/457/83     35 WNW AERO 35 MPH WNW RMY 33
1/3   23/2/13/-13/0.00/0.0/529/96     24 WNW AERO 23 MPH WNW RMY 23
1/4   38/19/29/+3/0.00/0.0/320/58     35 W   AERO 36 MPH W   RMY 36
1/5   40/27/34/+8/0.00/0.0/536/97     36 WNW AERO 37 MPH WNW RMY 38
1/6   42/27/35/+9/T/0.1/471/85        29 SW  AERO 29 MPH SW  RMY 29
1/7   38/27/33/+7/0.00/0.0/538/97     29 NW  AERO 27 MPH NW  RMY N/A
1/8   45/27/36/+10/0.00/0.0/428/77    39 SW  AERO 42 MPH SW  RMY 41
1/9   42/31/37/+11/T/0.0/033/06       40 W   AERO 39 MPH W   RMY N/A
1/10  45/32/39/+14/0.00/0.0/548/98    47 WNW AERO 48 MPH WNW RMY 50
1/11  38/29/34/+9/0.15/0.0/050/09     23 SE  AERO 21 MPH SE  RMY 23 
1/12  43/35/40/+15/0.02/0.0/000/00    21 SE  AERO 18 MPH SE  RMY 15
1/13  50/41/46/+21/0.01/0.0/000/00    30 SW  AERO 30 MPH SW  N/A
1/14  59/40/50/+25/T/0.0/175/31       36 S   AERO 37 MPH S   RMY 39
1/15  40/33/37/+12/T/0.0/045/08       17 N   AERO 16 MPH NNW RMY 17
1/16  33/29/31/+6/0.45/3.5/000/00     16 NNE AERO 14 MPH N   RMY 15
1/17  39/28/34/+9/0.00/0.0/.../..     36 WNW AERO 35 MPH WNW RMY 32
1/18  28/16/22/-3/0.00/0.0/.../..     39 NW  AERO 39 MPH NW  RMY 43
 
1/19  morning low temp: 21F; the normal low is now 17F
     
DAILY RECORDS FOR JANUARY 2013
None so far.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR JANUARY 19
HIGH 59F IN 1973
LOW -11F IN 1887
PRECIP 2.34 INS. IN 1936
SNOWFALL 10.5 INS. IN 1936
PEAK GUST 93e MPH WNW IN 1943
 
RECORDS FOR JANUARY 20
HIGH 59F IN 1951
LOW -9F IN 1901
PRECIP 1.95 INS. IN 1978
SNOWFALL 19.0 INS. IN 1978 [RECORD FOR MONTH]
PEAK GUST 76e MPH NE IN 1978
 
TODAY'S REPORT PREPARED BY: Forrest Iwanik