BLUE HILL METEOROLOGICAL OBSERVATORY 
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, AUGUST 2, 2014  
ALL TIMES ARE IN EASTERN STANDARD TIME

CLOUDY AND COOL WITH STEADY LIGHT RAIN TODAY

It's been a very cool, cloudy day today, with the temperature not even 
reaching 70F by our 2PM EDT observation this afternoon.  In fact, at 2PM, 
we were actually at our low temperature for the day so far of 64F.  A weak 
area of low pressure has been developing south of us today, bringing these 
gloomy conditions. Light rain has been continuous since early this morning, 
adding up to only 0.10 inches so far.  No sunshine has been observed so far 
today.  Winds have been light and onshore, mainly out of the E-SE.  The 
visibility has been between 20 and 40 miles for most of the day, and 
despite the clouds and rain we have not had any dense fog to deal with 
on the summit today.

JULY 2014 PRELIMINARY STATS 

TEMPERATURE [deg. F]
 
Av. Max. 80.8 
Av. Min. 63.5 
Mean     72.2 [+0.3] 
24-hour corr. mean: 72.0
Max. temp. for month: 91 on 3rd  
Min, temp. for month: 55 on 5th 
Total heating degree day units: None 
Total cooling degree day units: 228
Total seasonal cooling   units: 337 [-14] 
Season [1/1 thru 7/31]

PRECIPITATION [ins.]

Total: 5.08 [+1.06]
Greatest one calendar day: 2.48 [4th] *
Greatest in 24 hours 2.73 [4-5th]   
* new record for date; previous was 1.78 in 1950 

WIND 
Av. wind speed:       11.4 MPH  
Av. corr. wind speed: 11.8 MPH 
Prevailing direction: to be reported later

SUNSHINE 
Total astronomical minutes: 17566 of possible 27729 or 63%  
Total Campbell Stokes card minutes: 16898 of possible 26682 or 63%  

Today's Observations:

7 A.M.
Weather: Light rain, scattered altocumulus, overcast altostratus, few 
stratocumulus distant WSW-N  
Temperature: 67F; Dew Point: 65F; Wind: S at 3 kts,
Wind: Light
Sea-level pressure: 30.24 ins. Hg, falling slightly then rising    
Visibility: 35 miles  
6-hr max temp: 68F
6-hr min temp: 65F
24-hr precip: 0.02 inches
BHO SA 1155 85 SCT E100 OVC 35R- 242/67/65/1803/024/ FEW SC DSNT WSW-N 
WND LGT/ 8/57/ 53009 MANUAL 70002 ASOS 60001 70001 10068 20065

10 A.M.  
Weather: Light rain, overcast nimbostratus, few stratocumulus  
Temperature: 66F; Dew Point: 63F; Wind: SE at 7 kts 
Sea-level pressure: 30.25 ins. Hg, rising slightly     
Visibility: 25 miles 
3-hr precip: 0.05 inches
BHO SA 1455 E100 OVC 25R- 243/66/63/1207/025/ FEW SC/ 8/52/ 52001 
MANUAL 60005 ASOS 60005 

1 P.M.  
Weather: Light rain, scattered altocumulus, broken nimbostratus, overcast
altostratus, few stratocumulus mostly S, few cumulus distant W-NW
Temperature: 64F; Dew Point: 62F; Wind: ESE at 7 kts
Sea-level pressure: 30.22 ins. Hg, falling
Visibility: 35 miles, except 15 miles ENE-S
6-hr max temp: 67F  
6-hr min temp: 64F  
6-hr precip: 0.08 inches
BHO SA 1755 70 SCT E85 BKN 100 OVC 35R- 234/64/62/1107/022/ FEW SC MSTLY S 
FEW CU DSNT W-NW VSBY 15 ENE-S/ 8/57/ 56009 MANUAL 60008 ASOS 60008
10067 20064

WEATHER SUMMARY FOR FRIDAY, AUGUST 1, 2014  

TEMPERATURE (DEGREES F)
MAX.....86    NORMAL.....81
MIN.....63    NORMAL.....63
MEAN....75    NORMAL.....72

DEPARTURE FROM 30-YEAR NORMAL.........................+3
TOTAL DEPARTURE FOR THE MONTH.........................+3 [+3.0 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY.............10   DEPARTURE..........+3
TOTAL COOLING UNITS FOR THE MONTH.............10   DEPARTURE..........+3
TOTAL COOLING UNITS FOR THE SEASON...........347   DEPARTURE.........-11
TOTAL COOLING UNITS LAST SEASON TO DATE......490   DIFFERENCE.......-143

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY..................25  S   AT  4:23 P.M. *        
                   ASOS.......................29  S   AT  4:04 P.M.   
                   DAVIS......................27  S   AT  4:00 P.M. RMY 29       
FASTEST MILE FOR YESTERDAY....................22  S   AT  3:57 P.M.              
MAXIMUM 2-MINUTE ASOS AVERAGE.................21  SSW AT  4:25 P.M.    
MAXIMUM 2-MINUTE DAVIS AVERAGE................21  SSW AT  4:25 P.M.               
AVERAGE WIND SPEED AND DIRECTION..............9.6 S 		
                   ASOS......................10.0 
                   DAVIS......................8.6 SW [230 deg.]   
* last of several occurrences...

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.02  DEPARTURE..........-0.13
                         ASOS..............0.01
TOTAL PRECIPITATION FOR AUGUST.............0.02  DEPARTURE..........-0.13	    
                         ASOS..............0.01  
TOTAL PRECIPITATION FOR THE YEAR..........29.65  DEPARTURE..........-1.50
                         ASOS.............29.57 

PRELIMINARY CLIMATE SUMMARY FOR JULY-AUGUST 2014 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

7/1  85/66/76/+6/0.00/695/76              31 SSW RMY 36
7/2  89/69/79/+9/T/639/70                 33 SSW RMY 38 
7/3  91/68/80/+9/0.05/611/67              29 W   RMY 30  TSTM
7/4  72/61/67/-4/2.48/027/03              28 N   RMY N/A TSTM
7/5  77/55/66/-5/0.27/738/81              36 NW  RMY N/A 
7/6  83/61/72/+1/0.00/892/98              29 SW  RMY 33
7/7  85/65/75/+4/T/563/62                 33 SW  RMY 38  TSTM [NO RAIN] 
7/8  89/70/80/+8/0.00/763/84              31 SW  RMY 38 
7/9  86/70/78/+6/0.00/779/86              28 SSW RMY N/A	
7/10 80/65/73/+1/0.00/597/66              16 NW  RMY N/A
7/11 76/62/69/-3/0.00/732/81              22 NE  RMY N/A 
7/12 85/60/73/+1/0.00/849/94              21 S   RMY 25 
7/13 82/64/73/+1/0.01/676/75              31 S   RMY 35
7/14 83/69/76/+4/0.54/207/23              25 S   RMY 27
7/15 82/70/76/+4/0.02/135/15              26 S   RMY 29 TSTM
7/16 73/65/69/-3/0.98/000/00              27 SSW RMY 32 TSTM
7/17 79/62/71/-1/T/573/64                 15 WSW RMY 17 
7/18 80/60/70/-2/0.00/822/92              15 NW  RMY 16
7/19 77/63/70/-2/0.00/054/06              13 E   RMY 14 
7/20 72/60/66/-6/T/312/35                 16 ENE RMY 16
7/21 76/59/68/-4/0.00/667/75              16 E   RMY 19
7/22 88/63/76/+4/0.00/816/92              22 SSW RMY 25 
7/23 88/68/78/+6/0.00/770/87              29 S   RMY 32
7/24 74/63/69/-3/0.01/291/33              18 ENE RMY 18
7/25 80/56/68/-4/0.00/811/92              18 NW  RMY N/A       
7/26 82/63/73/+1/0.00/616/70              28 SSW RMY 32
7/27 75/65/70/-2/0.61/097/11              28 SSE RMY 30 TSTM 
7/28 81/65/73/+1/0.11/552/63              36 S   RMY 40 TSTM
7/29 78/60/69/-3/0.00/751/86              22 WNW RMY 24
7/30 78/59/69/-3/0.00/749/86              16 W   RMY 18  
7/31 80/61/71/-1/0.00/782/90              27 S   RMY 29  

8/1  86/63/75/+3/0.00/.../..              25 S   RMY 29

8/2 morning low of 65F; the normal low is now 63F
 
DAILY RECORDS FOR JULY 2014:

7/4  NEW DAILY RECORD RAINFALL OF 2.48 ins;
     surpasses previous record of 1.78 ins. in 1950
7/16 NEW DAILY RECORD RAINFALL OF 0.98 ins;
     surpasses previous record of 0.89 ins. in 1919

DAILY RECORDS FOR AUGUST 2014:
None so far.

DAILY EXTREMES 
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):     

RECORDS FOR AUGUST 2
HIGH 101F IN 1975 [STATION RECORD MAXIMUM - Tied with 8/10/1949]
LOW 50 IN 1929, 1947
PRECIP 1.59 INCHES IN 1946
PEAK GUST 50 MPH SW IN 2006

RECORDS FOR AUGUST 3
HIGH 96F IN 1930
LOW 50F IN 1976
PRECIP 1.45 INCHES IN 1979
PEAK GUST 52 MPH NW IN 2008 [TSTM]

TODAY'S REPORT PREPARED BY: Jonathan O'Brien