BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY CLIMATE SUMMARY
TUESDAY, JULY 13, 2004
ALL TIMES ARE IN EASTERN DAYLIGHT TIME [unless otherwise noted]

TODAY'S DISCUSSION AT 2 P.M.

COOL AND WET WEATHER TODAY BUT NOT MUCH RAINFALL....

Low clouds and heavy fog have enveloped the summit by 2 p.m. today.
Low  and  a heavy cloud cover and east winds have held the temperatures down
to very cool levels with a high of only 64 degrees through early
this afternoon. The reading had fallen to a very cool mid-summer afternoon
reading of just 61 degrees by 2 p.m. along with almost tenth of an inch of 
rain.
A few light showers before dawn have been followed by periods of light
rain later this morning into this afternoon.

TODAY'S MANUAL OBSERVATIONS....

7/13/2004 TUE

8 a.m. overcast conditions with 20 miles visibility and hazy; temp. 63;
dewpoint 55; wind se 9 mph; six hourly min. temp. 61 deg.

BHO SA 1155 E65 OVC 20 163/63/55/1308/001/ FEW SC N-NE BRGHT SPTS IOVC ENE-SE
SUN OCNL DMLY VSB HAZY/ 8/57/ 51002 10063 20061

11 a.m. scattered at 1500 and overcast at 3500 with 8 miles visibility and
thin fog with light rain; temp. 63; dewpoint 60; wind ene at 13 mph;
3-hourly rainfall .01 ins.

BHO SA 1455 E15 SCT 35 OVC 8 R- 156/63/60/0711/999/ THN F ALQDS/ 8/72/
56007 MANUAL 6001/ ASOS 60001

2 p.m. obscurement with variable visibility 1/16 variable 1/8 with heavy fog
and light rain; temp. 61; dewpoint 61; wind ene at 15 mph;
6-hourly max temp. 64 deg.; 6-hourly precip. .08 ins.

BHO SA 1755 W3 X 1/16VR-F 137/61/61/0713/993/VSBY 1/16V1/8/ 8//// 56019
MANUAL 6008/ ASOS 60008 10064 20061

WEATHER SUMMARY FOR MONDAY JULY 12:

TEMPERATURE (DEGREES F)
MAX.....76    NORMAL.....81    HAZEN SHELTER: 75.6 @  2:50 p.m.
MIN.....59    NORMAL.....62    HAZEN SHELTER: 59.0 @  5:24 a.m.
MEAN....68    NORMAL.....72


DEPARTURE FROM 30-YEAR NORMAL.........-4
TOTAL DEPARTURE FOR THE MONTH.........-15

JULY IS AVERAGING 1.5 DEGREES COOLER THAN NORMAL

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.........24 S    AT   3:57 p.m.
                    AEROVANE..........28 S    AT   3:57 p.m.
                    ASOS..............24 S    AT   3:58 p.m.
                    DAVIS.............28 S    AT   3:58 p.m.
                    ASOS 2-MINUTE.....20 S    AT   3:53 p.m.
                    FASTEST MILE......19 S    AT   3:54 p.m.

                    OUR AVERAGE....... 11.0 MPH S
                    ASOS AVERAGE...... 11.8 MPH S     [190 deg.]
                    DAVIS AVERAGE......11.7 MPH SSW   [200 deg.]


PRECIPITATION (INCHES) THROUGH THIS MORNING (EDT)
TOTAL PRECIPITATION 24 HRS ENDING 8 A.M....TRACE   DEPARTURE....-0.12
                          ASOS..............0.00 

TOTAL PRECIPITATION FOR THE 
MONTH..........2.29   DEPARTURE....+0.83
                          ASOS..............2.31 

TOTAL PRECIPITATION FOR THE 
YEAR..........25.16   DEPARTURE....-1.97
                          ASOS.............23.57 


PRELIMINARY CLIMATE SUMMARY FOR JULY 2004......CALENDAR DAY DATA
DATA REPORTED: 24 HOUR PERIODS ENDING MIDNIGHT EST
DATE  MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST

AERO: Aerovane recording wind system when significant
TSTM: Thunderstorm day
....: Data not yet available

7/1  82/62//72/+2/0.06/T/507/55       29 MPH S TSTM trace/sml 
hail
7/2  83/59/71/+1/0.93/T/575/63        45 MPH W TSTM  trace of hail *
7/3  80/59/70/0/0/892/98              21 MPH NNW
7/4  81/59/70/0/0/817/90              23 MPH SSE
7/5  69/63/66/-5/1.29/000/00       33 MPH S
7/6  79/65/72/+1/T/367/40                  22 MPH NW
7/7  78/63/71/0/0/690/76                   23 MPH SSE
7/8  75/62/69/-2/0.01/045/05/         24 MPH S
7/9  75/62/69/-2/0/534/59             25 MPH S
7/10 80/59/70/-1/0/842/93             21 MPH NW
7/11 74/60/67/-5/0/713/79             20 MPH N
7/12 76/59/68/-4/0/189/21             24 MPH S

7/13 ...MORNING LOW 61; no sunshine today...

VERY HEAVY RAINFALL EVENT ON JULY 2ND.....
7/2.. * short period rainfall 0.41 in 3 mins.; 0.50 in 5 mins.;
0.80 in 10 mins. 0.86 in 15 mins....

DAILY EXTREMES

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

RECORDS FOR JULY 12
HIGH   97F IN 1943
LOW    48F IN 1945
PRECIP 1.43 INCHES IN 1975
WIND   48e MPH SSW IN 1944

RECORDS FOR JULY 13
HIGH   95F IN 1894
LOW    52F IN 1888, 1895, 1939, 1973
PRECIP 3.54 INCHES IN 1996
WIND   55 MPH SE IN 1996

RECORDS FOR JULY 14
HIGH 98F IN 1952
LOW 51F IN 1895, 1937
PRECIP 1.97 INS IN 1960
WIND 110e MPH NW IN 1942 [RECORD FOR MONTH]

RECORDS FOR JULY 15
HIGH 94F IN 1995
LOW 50F IN 1929, 1930
PRECIP 1.64 INS IN 1896
WIND 71 MPH WNW IN 2002

RECORDS FOR JULY 16
HIGH 94F IN 1968, 1980, 1983, 1999
LOW 50F IN 1889, 1903
PRECIP 0.89 INS IN 1919
WIND 48e MPH SW 1944

TODAY'S REPORT BY:  Kim Jeffs/Robert Skilling