BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, SEPTEMBER 26, 2014  
ALL TIMES ARE IN EASTERN STANDARD TIME
 
ALL RAINFALL REMAINED SOUTH OF BLUE HILL YESTERDAY
UP TO AN INCH FELL ON CAPE COD; 2 INCHES AT NANTUCKET
 
While not even a trace was recorded here at the Observatory
here are a few selected amounts to our south. 
A total of 0.33 inch fell at Taunton, 0.22 at Plymouth,
0.85 at Hyannis, just over an inch at Chatham, 1.99 inches
was recorded at Nantucket, 0.30 fell at New Bedford.
 
 
HERE AT BLUE HILL...
Only 0.26 inches of precipitation has been recorded for
the month of September with only a few days left in the month.
The driest September on record of 0.45 inches, back in 1914, may
be in jeopardy depending on what rain may fall through next
Tuesday. 
Like August, September has been another very sunny month with
the percentage of possible sunshine up close to 70%.  
 
Today's Observations:
 
7 A.M.
Weather: Scattered cirrus, thin broken cirrus [2 levels] altocumulus and
altocumulus lenticularis ENE-S-WSW, patch dense cirrus ESE, sky clearing
Temperature: 56F; Dew Point: 49F; Wind: NNE at 10 kts,
Sea-level pressure: 30.22 ins. Hg, rising slightly      
Visibility: 15 miles, except 12 miles W-NW, NE 25 miles, hazy,
distant fog SSW-NNW
6-hr max temp: 56F
6-hr min temp: 52F
24-hr precip: 0.00
BHO SA 1155 220 SCT 250 -BKN 300 -BKN 15 235/56/49/0210/022/
AC/ACSL MSTLY DSNT ENE-S-WSW PTCH DNS CI ESE SKY CLRG DSNT FG 
SSW-NNW VSBY SW 15 W-NW 12 NE 25 HAZY/ 8/042 53002 10056 20052
       
10 A.M. 
Weather: Scattered dense cirrus, thin scattered cirrus,
altocumulus/altocumulus lenticularis distant ESE-SSE,
patches dense cirrus ENE-S
Temperature: 66F; Dew Point: 44F; Wind: NE at 7 kts,
Sea-level pressure: 30.24 ins. Hg, rising slightly     
Visibility: 40 miles, except 45 miles WNW, thin smoke layer
SW-NNE
BHO SA 1455 220 SCT 250 -SCT 40 240/66/44/0507/024/
AC/ACSL DSNT ESE-SSE CI/DNS CI ENE-S THN K LYR SW-NNE/
8/042 51005
 
1 P.M.
Weather: Clear, few small cumulus distant SW-N, cirrus and
dense cirrus distant E-SSE
Temperature: 72F; Dew Point: 50F; Wind: NE at 8 kts,
Wind: Direction variable N-ENE
Sea-level pressure: 30.22 ins. Hg, falling slightly 
Visibility: 55 miles, distant haze
6-hr max temp: 72F
6-hr min temp: 56F
6-hr precip: none 
BHO SA 1755 CLR 55 232/72/50/0408/022/ FEW SML CU DSNT SW-N
CI/DNS CI DSNT E-SSE DSNT HZ WND 01V07/ 8/102 58008
10072 20056

WEATHER SUMMARY FOR THURSDAY, SEPTEMBER 25, 2014 
 
TEMPERATURE (DEGREES F)
MAX.....59    NORMAL.....68
MIN.....52    NORMAL.....51
MEAN....56    NORMAL.....60
 
DEPARTURE FROM 30-YEAR NORMAL.........................-4
TOTAL DEPARTURE FOR THE MONTH........................+27 [+0.9 DEGREE/DAY]
 
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY..............0   DEPARTURE.......... -1
TOTAL COOLING UNITS FOR THE MONTH.............92   DEPARTURE..........+36
TOTAL COOLING UNITS FOR THE SEASON...........571   DEPARTURE..........-22
TOTAL COOLING UNITS LAST SEASON TO DATE......696   DIFFERENCE........-125
 
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY...............9  DEPARTURE..........+3
TOTAL HEATING UNITS FOR THE MONTH..............87  DEPARTURE..........+7    
TOTAL HEATING UNITS FOR THE SEASON.............89  DEPARTURE.........-16
TOTAL HEATING UNITS LAST SEASON TO DATE.......115 DIFFERENCE.........-26
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..................20 NE  AT  2:22 P.M.                
                   ASOS.......................19 NE  AT  2:22 P.M.                  
                   DAVIS......................18 NNE AT  2:22 P.M. RMY 19       
FASTEST MILE FOR YESTERDAY....................12 NE  AT 11:26 A.M.     
MAXIMUM 2-MINUTE ASOS AVERAGE.................14 NE  AT 11:25 A.M.                
MAXIMUM 2-MINUTE DAVIS AVERAGE................12 NE  AT 11:26 A.M.                            
AVERAGE WIND SPEED AND DIRECTION............ 8.5 NE                     
                   ASOS......................9.2 
                   DAVIS.....................7.6 ENE (060 degrees) 
* last of several occurrences 
                
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..........0.26  DEPARTURE..........-3.06      
                         ASOS..............0.23 
TOTAL PRECIPITATION FOR THE YEAR..........31.44  DEPARTURE..........-6.90
                         ASOS.............31.66
 

PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY 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
 
9/1  88/69/79/+11/0.00/710/90             16 W   RMY 19
9/2  91/70/81/+13/0.00/495/63             24 S   RMY 27 TSTM
9/3  83/67/75/+8/0.00/681/87              24 NW  RMY 27  
9/4  86/61/74/+7/0.00/758/97              20 SW  RMY 22
9/5  89/66/78/+11/0.00/731/94             25 SSW RMY 29
9/6  90/67/79/+12/T/481/62                33 SSW RMY 36 TSTM
9/7  77/62/70/+4/0.03/687/89              26 NW  RMY N/A
9/8  74/57/66/+0/0.00/601/78              25 ENE RMY 25
9/9  71/59/65/-1/0.00/384/50              23 ENE RMY 23
9/10 71/58/65/0/0.00/329/43               20 NE  RMY 20
9/11 78/60/69/+4/0.00/099/13              31 SW  RMY 35
9/12 72/51/62/-3/0.00/735/97              25 NNW RMY 22
9/13 67/50/59/-5/0.17/159/21              23 E   RMY 24
9/14 66/47/57/-7/0.00/685/91              25 NW  RMY 24
9/15 67/43/55/-9/0.00/698/93              17 W   RMY 18
9/16 66/52/59/-4/T/030/04                 16 SW  RMY 16
9/17 72/50/61/-2/0.00/722/98              16 NW  RMY 17
9/18 74/52/63/+1/0.00/578/78              21 N   RMY 23
9/19 56/43/50/-12/0.00/702/95             21 NE  RMY 23
9/20 71/45/58/-4/..../515/70              29 S   RMY 30
9/21 80/61/71/+10/0.06/176/24             26 SSE RMY 27
9/22 72/48/60/-1/0.00/701/96              33 W   RMY 35
9/23 70/44/57/-3/0.00/712/98              20 W   RMY 20
9/24 69/52/61/+1/0.00/543/75              21 NE  RMY 21
9/25 59/52/56/-4/0.00/000/00              20 NE  RMY 19
 
9/26 morning low temp: 52F since midnight; normal low now 51F
 
DAILY RECORDS FOR SEPTEMBER 2014:
None so far.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):    
 
RECORDS FOR SEPTEMBER 26
HIGH 91F IN 2007
LOW 36F IN 1905,1922,1978
PRECIP 3.84 INCHES IN 1888
PEAK GUST 54e MPH S IN 1977
 
RECORDS FOR SEPTEMBER 27
HIGH 84F IN 1998
LOW 32F IN 1947
PRECIP 2.26 INCHES IN 1962
PEAK GUST 100 MPH SSE IN 1985 (HURRICANE GLORIA)
 
TODAY'S REPORT PREPARED BY: Robert Skilling