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

DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, JULY 8, 2014  
ALL TIMES ARE IN EASTERN STANDARD TIME

THUNDERSTORMS ROLL THROUGH WORCESTER AND
METRO NORTH BOSTON LATE MONDAY AFTERNOON,
ONLY A TRACE FALLS AT GREAT BLUE HILL

A massive anvil was observed late yesterday afternoon
NW of the station moving E, which brought severe
wind damage to sections of Metro North Boston. For a 
brief period of time the National Weather Service issued
a tornado warning after radar picked up possible rotation.

Most storms stayed north of the station with only a trace
of precipitation falling at Great Blue Hill later in 
the evening.

By 1:00 PM EST today, skies were hazy with only 15 miles
of visibility to the NW-NNE. A maximum of 88F had been
reached by this time as well.

Today's Observations:

7 A.M.
Weather: Scattered cirrus fibratus, broken cirrocumulus,
few altocumulus castellanus
Temperature: 75F; Dew Point: 65F; Wind: SW @ 14 kts  
Sea-level pressure: 29.81 ins. Hg, decreasing, then increasing 
Visibility: 20 miles, hazy in all directions 
6-hr max temp: 75F
6-hr min temp: 71F
24-hr precip: Trace
BHO SA 1155 240 SCT E300 BKN 20 094/75/65/2214/981/ 
FEW ACC ALQDS HAZY/ 8/089 53009 MANUAL 6000/ 10075 20071

10 A.M. 
Weather: Broken altocumulus at different levels,
broken cirrostratus, chaotic sky
Temperature: 82F; Dew Point: 67F; Wind: SSW at 11 kts,
Sea-level pressure: 29.83 ins. Hg, increasing, then decreasing      
Visibility: 20 miles, hazy in all directions
BHO SA 1455 E130 BKN 250 BKN 20 101/82/67/2111/983/ 
CHAOTIC SKY VSBY NW-NNE 18 MI HAZY/ 8/096 50007
 
1 P.M.  
Weather: Few cumulus in all directions, broken cirrostratus 
Temperature: 87F; Dew Point: 66F; Wind: SSW at 14G19 kts,
Sea-level pressure: 29.80 ins.  Hg, falling, then more quickly  
Visibility: 20 miles, 15 miles NW-NNE, hazy in all directions
6-hr max temp: 88F
6-hr min temp: 74F
BHO SA 1755 E230 -OVC 20 091/87/66/2114G19/980/ 
FEW CU ALQDS VSBY NW-NNE 15 MI HAZY/ 8/107 58010 10088 20074 


WEATHER SUMMARY FOR MONDAY, JULY 7, 2014  

TEMPERATURE (DEGREES F)
MAX.....85    NORMAL.....80
MIN.....65    NORMAL.....62
MEAN....75    NORMAL.....71

DEPARTURE FROM 30-YEAR NORMAL.........................+4
TOTAL DEPARTURE FOR THE MONTH........................+20 [+2.7 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY.............10   DEPARTURE..........+3
TOTAL COOLING UNITS FOR THE MONTH.............60   DEPARTURE.........+16 
TOTAL COOLING UNITS FOR THE SEASON...........169   DEPARTURE..........-4
TOTAL COOLING UNITS LAST SEASON TO DATE......252   DIFFERENCE........-83

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY..................29 SW   AT  4:42 P.M. 
                   ASOS.......................34 SW   AT  4:43 P.M.   
                   DAVIS......................33 SW   AT  4:42 P.M. RMY 33       
FASTEST MILE FOR YESTERDAY....................24 SW   AT  4:43 P.M.      
MAXIMUM 2-MINUTE ASOS AVERAGE.................24 SW   AT  4:44 P.M.    
MAXIMUM 2-MINUTE DAVIS AVERAGE................22 NW   AT  4:44 P.M.    
AVERAGE WIND SPEED AND DIRECTION............16.2 WSW       	
                   ASOS.....................15.3    
                   DAVIS....................14.5 WSW [244 deg]
* Last of several occurrences

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE..........-0.11
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........2.80  DEPARTURE..........+2.04	    
                         ASOS..............2.80  
TOTAL PRECIPITATION FOR THE YEAR..........27.35  DEPARTURE..........-0.38 
                         ASOS.............27.66 

PRELIMINARY CLIMATE SUMMARY FOR JULY 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/.../..              31 SSW RMY 36
7/2  89/69/79/+9/0.00/.../..              33 SSW RMY 38 
7/3  91/68/80/+9/..../.../..              29 W   RMY 30  TSTM
7/4  72/61/67/-4/..../.../..              28 N   RMY N/A TSTM
7/5  77/55/66/-5/..../.../..              36 NW  RMY N/A 
7/6  83/61/72/+1/0.00/.../..              29 SW  RMY 33
7/7  85/65/75/+4/T/.../..                 33 SW  RMY 38

7/8  morning low of 71F, norm now 63F
 
DAILY EXTREMES 
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):     

RECORDS FOR JULY 8
HIGH 95F IN 1981
LOW 50F IN 1919
PRECIP 1.74 INCHES IN 1916
PEAK GUST 46e SSW IN 1941

RECORDS FOR JULY 9
HIGH 98F IN 1912
LOW 47F IN 1909
PRECIP 3.74 INS IN 1921
WIND 46 MPH NW IN 1992 

TODAY'S REPORT PREPARED BY: Brian Fitzgerald