BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, OCTOBER 28, 2013
ALL TIMES ARE IN EASTERN STANDARD TIME
 
SHARP TEMPERATURE INVERSION DEVELOPED OVERNIGHT LAST NIGHT
NOT QUITE AS COLD THIS MORNING AS PREVIOUS MORNINGS HERE AT SUMMIT 
LOTS OF SUNSHINE AND TEMPERATURES RISING WELL INTO 50'S TODAY
INCREASINGLY GUSTY WSW-W WINDS PAST 30 MPH BY AFTERNOON
 
The low temperature was a frosty 22 degrees at Norwood Airport
this morning and 25 degrees at Taunton Airport while here at the
summit our minimum was 35 degrees.  So, our coldest for the season
remains the 34F recorded Friday and Saturday morning.  The average
date of the first 32-degree reading here at the summit is October 20.
 
Lots of sunshine today and slightly milder than yesterday as our
maximum temperature has reached 58F by early this afternoon as
compared to 55F yesterday. Winds are becoming quite gusty from
the WSW-W up to 30 to 34 MPH by 2 P.M. EDT.
 
Today's Observations:
 
7 A.M.
Weather: Clear, altocumulus/few altocumulus lenticularis distant
WNW-NE, few thin cirrus all quadrants
Temperature: 37F; Dew Point: 31F; Wind: SW at 10 kts.
Sea-level pressure: 30.14 ins. Hg, rising then more rapidly
Visibility: 60 miles, except 70 miles NW, distant haze
6-hr max temp: 39F
6-hr min temp: 35F
BHO SA 1155 CLR 60 206/37/31/2310/014/ AC/FEW ACSL DSNT WNW-NE
FEW THN CI ALQDS PTCHS THN F BLO SMT/INVSN WND GRDLY BACKING
8/041 53009 10039 20035
 
10 A.M.
Weather: Clear, few altocumulus lenticularis distant WNW-N,
few cirrus all quadrants   
Temperature: 50F; Dew Point: 30F; Wind: WSW at 13G22 kts,
Wind: Direction variable SW-W
Sea-level pressure: 30.16 ins. Hg, increasing then decreasing slightly 
Visibility: 60 miles, distant haze  
BHO SA 1455 CLR 60 212/50/30/2513G22/016/ FEW ACSL DSNT WNW-N
FEW THN CI DSNT HZ WND 22V28/ 8/041 50006
 
1 P.M.
Weather: Scattered cumulus/stratocumulus cumulus generated mostly SW-N,
thin scattered cirrus, thin broken cirrus/cirrocumulus, cirrocumulus
overhead-S-SW
Temperature: 56F; Dew Point: 30F; Wind: W at 18G27 kts,
Wind: Direction variable SW-WNW
Sea-level pressure: 30.11 ins. Hg, decreasing then decreasing more slowly
Visibility: 55 miles, distant haze
6-hr max temp: 58F 
BHO SA 1755 55 SCT 250 -SCT 300 -BKN 55 197/56/30/2618G27/011/ SC MSTLY 
SW-N CC OVHD-S-SW DSNT HZ PK WND 2626/38/ WND 23V29/ 8/409 56015
10058 20037
 
WEATHER SUMMARY FOR SUNDAY, OCTOBER 27, 2013
 
TEMPERATURE (DEGREES F)
MAX.....55    NORMAL.....57
MIN.....39    NORMAL.....39
MEAN....47    NORMAL.....48
 
DEPARTURE FROM 30-YEAR NORMAL.....................-1
TOTAL DEPARTURE FOR THE MONTH....................+97 [+3.4 DEGREES/DAY]
 
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY...............0  DEPARTURE..........0
TOTAL COOLING UNITS FOR THE MONTH...............5  DEPARTURE..........0
TOTAL COOLING UNITS FOR THE SEASON............701  DEPARTURE........+99
TOTAL COOLING UNITS LAST SEASON TO DATE.......767  DIFFERENCE.......-66
 
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............18  DEPARTURE.........+1
TOTAL HEATING UNITS FOR THE MONTH.............255  DEPARTURE........-95
TOTAL HEATING UNITS FOR THE SEASON............401  DEPARTURE........-91
TOTAL HEATING UNITS LAST SEASON TO DATE.......366  DIFFERENCE.......+35
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..................30 W     AT   1:54 P.M.
                   AERO.......................31 W     AT   4:28 P.M.
                   ASOS.......................31 W     AT   1:54 P.M.
                   DAVIS......................30 W     AT   1:54 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY....................23 W     AT   3:28 SSW  
MAXIMUM 2-MINUTE ASOS AVERAGE.................28 SSW   AT   1:46 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE................21 W     AT   1:54 P.M.
AVERAGE WIND SPEED AND DIRECTION............13.7 W
                   ASOS.....................13.5
                   DAVIS....................11.9 W  [260 degrees]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00   DEPARTURE.............-0.15
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........1.02   DEPARTURE.............-3.04
                         ASOS..............1.00
TOTAL PRECIPITATION FOR THE YEAR..........42.90   DEPARTURE.............-0.20
                         ASOS..............N/A**
**ASOS malfunctioned during storm on 2/8-9, leading to erroneous totals
 
PRELIMINARY CLIMATE SUMMARY FOR OCTOBER 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
 
10/1  75/50/63/+6/0.00/676/96         16 WNW AERO 16 MPH WNW RMY 18
10/2  78/56/67/+10/0.00/666/95        29 W   AERO 30 MPH W   RMY 29
10/3  77/56/67/+11/0.00/628/90        20 WNW AERO 20 MPH WNW RMY N/A
10/4  67/56/62/+6/0.26/028/04         18 NW  AERO 20 MPH NW  RMY N/A
10/5  67/56/62/+6/0.01/125/18         14 ENE AERO 12 MPH ENE RMY N/A
10/6  58/53/56/+1/0.56/000/00         20 NE  AERO 20 MPH NE  RMY N/A
10/7  75/57/66/+11/0.07/213/31        48 S   AERO 55 MPH S   RMY 55
10/8  65/50/58/+4/0.00/581/85         25 NW  AERO 27 MPH NW  RMY 28
10/9  59/49/54/0/0.00/545/80          25 ENE AERO 24 MPH ENE RMY 25
10/10 61/46/54/0/0.00/095/14          18 NE  AERO 17 MPH NE  RMY 18
10/11 67/50/59/+6/0.00/473/70         20 NE  AERO 20 MPH NE  RMY N/A
10/12 59/50/55/+2/0.02/007/01         30 ENE AER0 31 MPH ENE RMY 32
10/13 59/46/53/0/0.00/482/72          23 ENE AERO 23 MPH ENE RMY 23
10/14 64/42/53/+1/0.00/580/87         15 SSW AERO 15 MPH SSW RMY 15
10/15 66/50/58/+6/0.00/266/40         16 ESE AERO 16 MPH ESE RMY N/A
10/16 60/49/55/+4/0.00/013/02         23 ESE AERO 24 MPH ESE RMY 23
10/17 70/52/61/+10/0.06/277/42        21 S   AERO 23 MPH S   RMY N/A
10/18 67/50/59/+8/T/630/96            32 WNW AERO 32 MPH W   RMY 31
10/19 65/45/55/+5/0.00/379/58         21 W   AERO 22 MPH W   RMY N/A
10/20 61/44/53/+3/0.00/644/99         33 W   AERO 36 MPH W   RMY 34
10/21 67/43/55/+5/0.00/.../..         23 SSW AERO 25 MPH SSW RMY 27
10/22 69/44/57/+8/T/.../..            25 SSW AERO 27 MPH SSW RMY 27
10/23 50/40/45/-4/0.00/.../..         18 WNW AERO 18 MPH WNW RMY N/A
10/24 53/36/45/-4/0.00/.../..         31 W   AERO 31 MPH W   RMY 34
10/25 49/34/42/-7/0.00/.../..         25 WNW AERO 26 MPH WNW RMY 26
10/26 54/34/44/-4/0.00/.../..         35 SW  AERO 36 MPH SSW RMY 39
10/27 55/39/47/-1/0.04/.../..         30 W   AERO 30 MPH W   RMY 29
 
10/28 morning low temp: 35F; the normal low is now 39F
 
DAILY RECORDS FOR OCTOBER 2013
None so far.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR OCTOBER 28
HIGH 81F IN 1919
LOW 23F IN 1914
PRECIP 2.46 INCHES IN 2006
SNOWFALL TRACE IN 1934,1957,1979
PEAK GUST 71 MPH SSW IN 1995
 
RECORDS FOR OCTOBER 29
HIGH 74F IN 1989
LOW 23F IN 1891
PRECIP 2.42 INCHES IN 2012
SNOWFALL 4.0 INCHES IN 2011
PEAK GUST 76 E IN 2012
 
TODAY'S REPORT PREPARED BY: Robert Skilling/Kevin Pecora