AUGUST 12TH, 1778-A Rhode Island hurricane prevented an impending British-French sea battle, and caused extensive damage over southeast New England.
Rise 6:21AM
Set 8:07PM
Reporting Location : Ashburn, VA
Sunny. Mild.
Rise 6:21AM
Set 8:07PM
First Quarter
Rise2:13PM
Set11:54PM
MONDAY NIGHT
IAD / No delays
AUGUST 12TH, 1778-A Rhode Island hurricane prevented an impending British-French sea battle, and caused extensive damage over southeast New England.
AUGUST 12TH, 1778 |
A Rhode Island hurricane prevented an impending British-French sea battle, and caused extensive damage over southeast New England. |
AUGUST 12TH, 1955 |
During the second week of August hurricanes Connie and Diane produced as much as 19 inches of rain in the northeastern U.S. forcing rivers from Virginia to Massachusetts into a high flood. Westfield MA was deluged with 18.15 inches of rain in 24 hours, and at Woonsocket RI the Blackstone River swelled from seventy feet in width to a mile and a half. Connecticut and the Delaware Valley were hardest hit. Total damage in New England was 800 million dollars, and flooding claimed 187 lives. |
AUGUST 11TH, 1940 |
A major hurricane struck Savannnah GA and Charleston SC causing the worst inland flooding since 1607. |
AUGUST 11TH, 1944 |
The temperature at Burlington VT soared to an all-time record high of 101 degrees. |
AUGUST 10TH, 1856 |
A hurricane's 5 ft. storm tide drowns 140 vacationers at Isle Derniere (Last Island) off the Louisiana coast. In 1943, on the same day, lightning kills six soldiers on a drill field at Fort Belvoir, VA. |
AUGUST 10TH, 1980 |
Hurricane Allen came ashore above Brownsville TX dropping fifteen inches of rain near San Antonio, and up to 20 inches in the Lower Rio Grande Valley. Tidal flooding occurred along the South Texas coast. Hurricane Allen packed winds to 150 mph, and also spawned twenty-nine tornadoes. Total damage from the storm was estimated at 750 million dollars. |
AUGUST 9TH, 1878 |
The second most deadly tornado in New England history struck Wallingford CT killing 34 persons, injuring 100 others, and completely destroying thirty homes. The tornado started as a waterspout over a dam on the Quinnipiac River. It was 400 to 600 feet wide, and had a short path length of two miles. |
AUGUST 9TH, 1969 |
A tornado hit Cincinnati OH killing four persons and causing fifteen million dollars property damage. The tornado moved in a southeasterly direction at 40 to 50 mph. |
AUGUST 8TH, 1882 |
An August snowstorm was reported by a ship on Lake Michigan. A thick cloud reportedly burst on the decks covering them with snow and slush six inches deep. Snow showers were observed at shore points that day. |
AUGUST 8TH, 1983 |
The temperature at Big Horn Basin WY reached 115 degrees to establish a state record. |
AUGUST 7TH, 1904 |
A flash flood near Pueblo CO washed a train from the tracks killing 89 passengers. A bridge, weakened by the floodwaters sweeping through the valley below, gave way under the weight of the train dashing all but the sleeping cars into the torrent drowning the occupants. Rail service was frequently interrupted in the Rocky Mountain Region and southwestern U.S. that summer due to numerous heavy downpours which washed out the railroad beds delaying trains as much as five days. |
Issued By | NWS Field Office | Broadcast Time | Mon, 29 Dec 2014 03:43:00 PST |
Issuing Time | Mon, 29 Dec 2014 03:43:00 PST | Valid Until | Mon, 29 Dec 2014 03:43:00 PST |
Strong northerly winds are forecast to develop across the San Francisco Bay Area by midday Tuesday and continue through midday Wednesday. A strong..cold and dry storm system will sweep into northern and central California late Monday night and Tuesday morning. This system will generate strong and gusty north to northest winds across the region from midday Tuesday through midday Wednesday.
Rise 6:21AM
Set 8:07PM
First Quarter
Rise2:13PM
Set11:54PM
MONDAY NIGHT
IAD / No delays
History | |||
Weather Station: Washington-Dulles International Airport , VA , US | |||
August Data | Choose another month |
Averages | |
Average High Temperature
39.92 °F
|
Average Low Temperature
21.02 °F
|
Average Mean Temp
30.92 °F
|
Average Dew Point
21.02 °F
|
Average Windspeed
12.65 mph
|
Average Wind Direction
315.0
|
Average Morning Relative Humidity
76.0
|
Average Afternoon Relative Humidity
56.0
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
2.80
|
Average Snowfall (US Only)
8.00
|
|
Daily Counts | |
Days With Precipitation
10
|
Days With Thunderstorms
*
|
Days With Fog
12
|
Days With Snow
4
|
Days With Lows Below Freezing
26
|
Days above 90° F (32.2° C)
0
|
Records | |
Record High
75.02 °F
|
Record Low
-18.04 °F
|
Record Wind Speed
62.00 mph
|
Record Monthly Snowfall
73.6 "
|
Record 24-hour Snowfall
10.99 "
|
Record Monthly Rainfall
6.62 "
|
Record 24-hour Rainfall
1.62 "
|
Record Minimum Monthly Precipitation
0.40 "
|
Averages | |
Average High Temperature
44.06 °F
|
Average Low Temperature
23.00 °F
|
Average Mean Temp
33.98 °F
|
Average Dew Point
21.92 °F
|
Average Windspeed
12.65 mph
|
Average Wind Direction
315.0
|
Average Morning Relative Humidity
77.0
|
Average Afternoon Relative Humidity
52.0
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
2.80
|
Average Snowfall (US Only)
7.01
|
|
Daily Counts | |
Days With Precipitation
9
|
Days With Thunderstorms
*
|
Days With Fog
10
|
Days With Snow
3
|
Days With Lows Below Freezing
23
|
Days above 90° F (32.2° C)
0
|
Records | |
Record High
78.98 °F
|
Record Low
-14.08 °F
|
Record Wind Speed
52.82 mph
|
Record Monthly Snowfall
71.1 "
|
Record 24-hour Snowfall
23.01 "
|
Record Monthly Rainfall
5.79 "
|
Record 24-hour Rainfall
2.09 "
|
Record Minimum Monthly Precipitation
0.20 "
|
Averages | |
Average High Temperature
55.04 °F
|
Average Low Temperature
32.00 °F
|
Average Mean Temp
44.06 °F
|
Average Dew Point
30.02 °F
|
Average Windspeed
12.65 mph
|
Average Wind Direction
315.0
|
Average Morning Relative Humidity
77.0
|
Average Afternoon Relative Humidity
48.0
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
3.10
|
Average Snowfall (US Only)
2.99
|
|
Daily Counts | |
Days With Precipitation
10
|
Days With Thunderstorms
1
|
Days With Fog
11
|
Days With Snow
2
|
Days With Lows Below Freezing
17
|
Days above 90° F (32.2° C)
0
|
Records | |
Record High
89.06 °F
|
Record Low
6.08 °F
|
Record Wind Speed
60.88 mph
|
Record Monthly Snowfall
27.9 "
|
Record 24-hour Snowfall
5.99 "
|
Record Monthly Rainfall
5.79 "
|
Record 24-hour Rainfall
1.81 "
|
Record Minimum Monthly Precipitation
1.00 "
|
Averages | |
Average High Temperature
64.94 °F
|
Average Low Temperature
39.92 °F
|
Average Mean Temp
53.06 °F
|
Average Dew Point
39.02 °F
|
Average Windspeed
12.65 mph
|
Average Wind Direction
315.0
|
Average Morning Relative Humidity
77.0
|
Average Afternoon Relative Humidity
46.0
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
3.10
|
Average Snowfall (US Only)
*
|
|
Daily Counts | |
Days With Precipitation
10
|
Days With Thunderstorms
2
|
Days With Fog
11
|
Days With Snow
*
|
Days With Lows Below Freezing
6
|
Days above 90° F (32.2° C)
*
|
Records | |
Record High
91.94 °F
|
Record Low
17.06 °F
|
Record Wind Speed
67.77 mph
|
Record Monthly Snowfall
10.2 "
|
Record 24-hour Snowfall
2.99 "
|
Record Monthly Rainfall
7.29 "
|
Record 24-hour Rainfall
2.09 "
|
Record Minimum Monthly Precipitation
0.30 "
|
Averages | |
Average High Temperature
73.94 °F
|
Average Low Temperature
50.00 °F
|
Average Mean Temp
62.96 °F
|
Average Dew Point
51.08 °F
|
Average Windspeed
8.06 mph
|
Average Wind Direction
180.0
|
Average Morning Relative Humidity
82.0
|
Average Afternoon Relative Humidity
53.0
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
4.00
|
Average Snowfall (US Only)
*
|
|
Daily Counts | |
Days With Precipitation
12
|
Days With Thunderstorms
4
|
Days With Fog
15
|
Days With Snow
0
|
Days With Lows Below Freezing
*
|
Days above 90° F (32.2° C)
1
|
Records | |
Record High
96.98 °F
|
Record Low
28.04 °F
|
Record Wind Speed
52.82 mph
|
Record Monthly Snowfall
* "
|
Record 24-hour Snowfall
* "
|
Record Monthly Rainfall
10.28 "
|
Record 24-hour Rainfall
3.11 "
|
Record Minimum Monthly Precipitation
0.80 "
|
Averages | |
Average High Temperature
82.94 °F
|
Average Low Temperature
59.00 °F
|
Average Mean Temp
71.06 °F
|
Average Dew Point
60.98 °F
|
Average Windspeed
6.88 mph
|
Average Wind Direction
180.0
|
Average Morning Relative Humidity
84.0
|
Average Afternoon Relative Humidity
54.0
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
3.90
|
Average Snowfall (US Only)
0.00
|
|
Daily Counts | |
Days With Precipitation
10
|
Days With Thunderstorms
6
|
Days With Fog
16
|
Days With Snow
0
|
Days With Lows Below Freezing
0
|
Days above 90° F (32.2° C)
5
|
Records | |
Record High
100.04 °F
|
Record Low
35.96 °F
|
Record Wind Speed
73.47 mph
|
Record Monthly Snowfall
0.0 "
|
Record 24-hour Snowfall
0.00 "
|
Record Monthly Rainfall
18.20 "
|
Record 24-hour Rainfall
10.99 "
|
Record Minimum Monthly Precipitation
0.50 "
|
Averages | |
Average High Temperature
87.08 °F
|
Average Low Temperature
64.04 °F
|
Average Mean Temp
75.92 °F
|
Average Dew Point
64.94 °F
|
Average Windspeed
6.88 mph
|
Average Wind Direction
180.0
|
Average Morning Relative Humidity
85.0
|
Average Afternoon Relative Humidity
54.0
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
3.50
|
Average Snowfall (US Only)
0.00
|
|
Daily Counts | |
Days With Precipitation
10
|
Days With Thunderstorms
6
|
Days With Fog
19
|
Days With Snow
0
|
Days With Lows Below Freezing
0
|
Days above 90° F (32.2° C)
11
|
Records | |
Record High
104.00 °F
|
Record Low
41.00 °F
|
Record Wind Speed
78.06 mph
|
Record Monthly Snowfall
0.0 "
|
Record 24-hour Snowfall
0.00 "
|
Record Monthly Rainfall
7.09 "
|
Record 24-hour Rainfall
2.60 "
|
Record Minimum Monthly Precipitation
0.90 "
|
Averages | |
Average High Temperature
86.00 °F
|
Average Low Temperature
62.96 °F
|
Average Mean Temp
73.94 °F
|
Average Dew Point
64.04 °F
|
Average Windspeed
6.88 mph
|
Average Wind Direction
180.0
|
Average Morning Relative Humidity
88.0
|
Average Afternoon Relative Humidity
55.0
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
4.00
|
Average Snowfall (US Only)
0.00
|
|
Daily Counts | |
Days With Precipitation
10
|
Days With Thunderstorms
5
|
Days With Fog
21
|
Days With Snow
0
|
Days With Lows Below Freezing
0
|
Days above 90° F (32.2° C)
8
|
Records | |
Record High
104.00 °F
|
Record Low
37.94 °F
|
Record Wind Speed
67.77 mph
|
Record Monthly Snowfall
0.0 "
|
Record 24-hour Snowfall
0.00 "
|
Record Monthly Rainfall
10.72 "
|
Record 24-hour Rainfall
4.69 "
|
Record Minimum Monthly Precipitation
0.80 "
|
Averages | |
Average High Temperature
78.98 °F
|
Average Low Temperature
55.04 °F
|
Average Mean Temp
66.92 °F
|
Average Dew Point
57.92 °F
|
Average Windspeed
6.88 mph
|
Average Wind Direction
180.0
|
Average Morning Relative Humidity
89.0
|
Average Afternoon Relative Humidity
55.0
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
3.40
|
Average Snowfall (US Only)
0.00
|
|
Daily Counts | |
Days With Precipitation
8
|
Days With Thunderstorms
2
|
Days With Fog
19
|
Days With Snow
0
|
Days With Lows Below Freezing
*
|
Days above 90° F (32.2° C)
3
|
Records | |
Record High
98.96 °F
|
Record Low
30.02 °F
|
Record Wind Speed
53.94 mph
|
Record Monthly Snowfall
0.0 "
|
Record 24-hour Snowfall
0.00 "
|
Record Monthly Rainfall
11.31 "
|
Record 24-hour Rainfall
5.52 "
|
Record Minimum Monthly Precipitation
0.60 "
|
Averages | |
Average High Temperature
68.00 °F
|
Average Low Temperature
42.08 °F
|
Average Mean Temp
55.04 °F
|
Average Dew Point
44.96 °F
|
Average Windspeed
6.88 mph
|
Average Wind Direction
180.0
|
Average Morning Relative Humidity
88.0
|
Average Afternoon Relative Humidity
52.0
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
3.30
|
Average Snowfall (US Only)
*
|
|
Daily Counts | |
Days With Precipitation
8
|
Days With Thunderstorms
1
|
Days With Fog
15
|
Days With Snow
*
|
Days With Lows Below Freezing
5
|
Days above 90° F (32.2° C)
*
|
Records | |
Record High
89.96 °F
|
Record Low
15.08 °F
|
Record Wind Speed
51.65 mph
|
Record Monthly Snowfall
2.5 "
|
Record 24-hour Snowfall
0.98 "
|
Record Monthly Rainfall
9.22 "
|
Record 24-hour Rainfall
4.10 "
|
Record Minimum Monthly Precipitation
* "
|
Averages | |
Average High Temperature
57.02 °F
|
Average Low Temperature
33.98 °F
|
Average Mean Temp
46.04 °F
|
Average Dew Point
35.06 °F
|
Average Windspeed
11.47 mph
|
Average Wind Direction
315.0
|
Average Morning Relative Humidity
83.0
|
Average Afternoon Relative Humidity
54.0
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
3.20
|
Average Snowfall (US Only)
0.98
|
|
Daily Counts | |
Days With Precipitation
9
|
Days With Thunderstorms
1
|
Days With Fog
12
|
Days With Snow
1
|
Days With Lows Below Freezing
15
|
Days above 90° F (32.2° C)
0
|
Records | |
Record High
84.02 °F
|
Record Low
8.96 °F
|
Record Wind Speed
52.82 mph
|
Record Monthly Snowfall
27.9 "
|
Record 24-hour Snowfall
10.99 "
|
Record Monthly Rainfall
7.80 "
|
Record 24-hour Rainfall
2.40 "
|
Record Minimum Monthly Precipitation
0.20 "
|
Averages | |
Average High Temperature
44.96 °F
|
Average Low Temperature
26.06 °F
|
Average Mean Temp
35.96 °F
|
Average Dew Point
26.06 °F
|
Average Windspeed
12.65 mph
|
Average Wind Direction
315.0
|
Average Morning Relative Humidity
78.0
|
Average Afternoon Relative Humidity
57.0
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
3.20
|
Average Snowfall (US Only)
4.02
|
|
Daily Counts | |
Days With Precipitation
10
|
Days With Thunderstorms
*
|
Days With Fog
12
|
Days With Snow
2
|
Days With Lows Below Freezing
24
|
Days above 90° F (32.2° C)
0
|
Records | |
Record High
78.08 °F
|
Record Low
-4.00 °F
|
Record Wind Speed
62.00 mph
|
Record Monthly Snowfall
60.9 "
|
Record 24-hour Snowfall
10.99 "
|
Record Monthly Rainfall
6.70 "
|
Record 24-hour Rainfall
2.92 "
|
Record Minimum Monthly Precipitation
0.40 "
|
Rise 6:21AM
Set 8:07PM
First Quarter
Rise2:13PM
Set11:54PM
MONDAY NIGHT
IAD / No delays
Day | Reason | Upper Soil Moisture | Lower Soil Moisture | |
Monday | ![]() |
Fire danger low | 27% | 29% |
Tuesday | ![]() |
Fire danger low | 27% | 29% |
Wednesday | ![]() |
Fire danger low | 27% | 29% |
Thursday | ![]() |
Fire danger low | 27% | 29% |
Friday | ![]() |
Fire danger low | 27% | 29% |
Saturday | ![]() |
Fire danger very low | 27% | 29% |
Rise 6:21AM
Set 8:07PM
First Quarter
Rise2:13PM
Set11:54PM
MONDAY NIGHT
IAD / No delays
Rise 6:21AM
Set 8:07PM
First Quarter
Rise2:13PM
Set11:54PM
MONDAY NIGHT
IAD / No delays