Reporting Station : Leesburg / Godfrey, VA

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MAY 17TH, 1883-A three day flood in the Black Hills of western South Dakota resulted in a million dollars damage at Rapid City.

Previously
MAY 17TH, 1883 A three day flood in the Black Hills of western South Dakota resulted in a million dollars damage at Rapid City.
 
MAY 17TH, 1979 A reading of 12 degrees at Mauna Kea Observatory established an all-time record low for the state of Hawaii.
 
MAY 16TH, 1952 High winds in the Wasatch Canyon of Utah struck Ogden and Brigham City. Winds at Hill Air Force Base gusted to 92 mph.
 
MAY 16TH, 1874 The Mill Creek disaster occurred west of Northhampton MA. Dam slippage resulted in a flash flood which claimed 143 lives, and caused a million dollars property damage.
 
MAY 15TH, 1834 The Northern Atlantic Coast States were in the midst of their greatest May snowstorm of record. The hills around Newbury VT were covered with two to three feet of snow.
 
MAY 15TH, 1972 The worst ice jam flooding of memory for long-time residents took place along the Kuskokwim River and Yukon River in Alaska. It was the first time since 1890 that the two rivers "flowed as one". The towns of Oscarville and Napaskiak were completely inundated.
 
MAY 14TH, 1896 The mercury plunged to 10 degrees below zero at Climax CO. It was the lowest reading of record for the U.S. during the month of May.
 
MAY 14TH, 1898 A severe thunderstorm, with some hailstones up to 9.5 inches in circumference, pounded a four mile wide path across Kansas City MO. South-facing windows were broken in nearly every house in central and eastern parts of the city, and several persons were injured. An even larger hailstone was thought to have been found, but it turned out to be a chunk of ice tossed out the window of a building by a prankster.
 
MAY 13TH, 1930 A man was killed when caught in an open field during a hailstorm northwest of Lubbock TX.
 
MAY 13TH, 1981 A tornado 450 yards in width destroyed ninety percent of Emberson TX. People did not see a tornado, but rather a wall of debris. Homes were leveled, a man in a bathtub was hurled a quarter of a mile, and a 1500 pound recreational vehicle was hurled 500 yards. Miraculously no deaths occurred in the tornado.
 
MAY 12TH, 1972 In Texas, A cloudburst dumped sixteen inches of rain north of New Braunfels sending a thirty foot wall of water down Blueders Creek into the Comal and Guadalupe Rivers washing away people, houses and automobiles. The flood claimed 18 lives and caused more than twenty million dollars damage.
 
Wind Advisory
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.

History
Weather Station: Washington-Dulles International Airport , VA , US
May 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 "
Day   Reason Upper Soil Moisture Lower Soil Moisture
Tuesday cw_fire_moderate
Fire danger moderate 27% 28%
Wednesday cw_fire_vlow
Fire danger very low 27% 28%
Thursday cw_fire_vlow
Fire danger very low 27% 28%
Friday cw_fire_low
Fire danger low 27% 28%
Saturday cw_fire_low
Fire danger low 27% 28%
Sunday cw_fire_vlow
Fire danger very low 27% 28%
Snow conditions provided by SnoCountry Mountain Reports™

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