DECEMBER 21ST, 1892-Portland OR was buried under a record 27.5 inches of snow.
Rise 5:11AM
Set 6:56PM
Reporting Station : Waterkloof Lmb, Gauteng, South Africa
No reported sky conditions. Mild
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Rise 5:11AM
Set 6:56PM
Waning gibbous
Rise11:35PM
Set10:46AM
SATURDAY EVENING
AJS / No delays
DECEMBER 21ST, 1892-Portland OR was buried under a record 27.5 inches of snow.
DECEMBER 21ST, 1892 |
Portland OR was buried under a record 27.5 inches of snow. |
DECEMBER 21ST, 1964 |
A great warm surge from the Pacific Ocean across Oregon and northern California brought torrential rains on a deep snow cover resulting in record floods. |
DECEMBER 20TH, 1836 |
A famous cold wave occurred in central Illinois. A cold front with 70 mph winds swept through at Noon dropping the temperature from 40 degrees to near zero in a matter of minutes. Many settlers froze to death. Folklore told of chickens frozen in their tracks and men frozen to saddles. Ice in streams reportedly froze to six inches in a few hours. |
DECEMBER 20TH, 1942 |
An early cold wave sent the temperature plunging to 3 degrees below zero at Nantucket MA, and to 11 degrees below zero at Boston MA. |
DECEMBER 19TH, 1777 |
The Continental Army moved into encampment at Valley Forge amidst stormy winds and piercing cold. A relatively moderate winter followed. |
DECEMBER 19TH, 1924 |
The Riverside Ranger Station in Yellowstone Park WY reported a low of 59 degrees below zero, a December record for the U.S. |
DECEMBER 18TH, 1957 |
A tornado swept across Jackson County, Williamson County and Franklin County in southern Illinois killing eleven persons. |
DECEMBER 18TH, 1981 |
A heavy lake-effect snow blanketed the southern and southeast shores of Lake Michigan leaving up to 22 inches of snow at Valparaiso IND. |
DECEMBER 17TH, 1884 |
A three week blockade of snow began at Portland OR. A record December total of 34 inches was received. |
DECEMBER 17TH, 1924 |
A severe icestorm struck central Illinois. It coated the ground with nearly two inches of glaze at Springfield. The storm caused 21 million dollars damage along with much hardship. Ice was on the trees until the 4th of January, and electricity was not restored until January 10th. |
DECEMBER 16TH, 1835 |
New England experienced one of their coldest days of record. At noon on that bitterly cold Wednesday the mercury stood at four degrees below at Boston, 15 degrees below at Norfolk CT, and 17 degrees below at Hanover NH. The temperature at Boston was 12 degrees below zero by sunset. Gale force winds accompanied the severe cold, and that night a great New York City fire destroyed much of the financial district. |
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 5:11AM
Set 6:56PM
Waning gibbous
Rise11:35PM
Set10:46AM
SATURDAY EVENING
AJS / No delays
History | |||
Weather Station: Pretoria Airport , 06 , SF | |||
December Data | Choose another month |
Averages | |
Average High Temperature
82.04 °F
|
Average Low Temperature
66.92 °F
|
Average Mean Temp
73.94 °F
|
Average Dew Point
57.92 °F
|
Average Windspeed
5.77 mph
|
Average Wind Direction
45.0
|
Average Morning Relative Humidity
77.0
|
Average Afternoon Relative Humidity
47.0
|
Typical Sky Cover
BRK
|
Average Precipitation (US Only)
*
|
Average Snowfall (US Only)
*
|
|
Daily Counts | |
Days With Precipitation
11
|
Days With Thunderstorms
8
|
Days With Fog
*
|
Days With Snow
0
|
Days With Lows Below Freezing
0
|
Days above 90° F (32.2° C)
3
|
Records | |
Record High
96.98 °F
|
Record Low
53.96 °F
|
Record Wind Speed
57.41 mph
|
Record Monthly Snowfall
* "
|
Record 24-hour Snowfall
* "
|
Record Monthly Rainfall
* "
|
Record 24-hour Rainfall
* "
|
Record Minimum Monthly Precipitation
* "
|
Averages | |
Average High Temperature
80.96 °F
|
Average Low Temperature
66.02 °F
|
Average Mean Temp
73.94 °F
|
Average Dew Point
57.92 °F
|
Average Windspeed
5.77 mph
|
Average Wind Direction
90.0
|
Average Morning Relative Humidity
79.0
|
Average Afternoon Relative Humidity
47.0
|
Typical Sky Cover
BRK
|
Average Precipitation (US Only)
*
|
Average Snowfall (US Only)
*
|
|
Daily Counts | |
Days With Precipitation
9
|
Days With Thunderstorms
4
|
Days With Fog
1
|
Days With Snow
0
|
Days With Lows Below Freezing
0
|
Days above 90° F (32.2° C)
1
|
Records | |
Record High
96.98 °F
|
Record Low
55.04 °F
|
Record Wind Speed
64.29 mph
|
Record Monthly Snowfall
* "
|
Record 24-hour Snowfall
* "
|
Record Monthly Rainfall
* "
|
Record 24-hour Rainfall
* "
|
Record Minimum Monthly Precipitation
* "
|
Averages | |
Average High Temperature
78.98 °F
|
Average Low Temperature
64.04 °F
|
Average Mean Temp
71.06 °F
|
Average Dew Point
55.94 °F
|
Average Windspeed
5.77 mph
|
Average Wind Direction
90.0
|
Average Morning Relative Humidity
80.0
|
Average Afternoon Relative Humidity
48.0
|
Typical Sky Cover
SCT
|
Average Precipitation (US Only)
*
|
Average Snowfall (US Only)
*
|
|
Daily Counts | |
Days With Precipitation
9
|
Days With Thunderstorms
4
|
Days With Fog
2
|
Days With Snow
0
|
Days With Lows Below Freezing
0
|
Days above 90° F (32.2° C)
*
|
Records | |
Record High
93.02 °F
|
Record Low
46.04 °F
|
Record Wind Speed
57.41 mph
|
Record Monthly Snowfall
* "
|
Record 24-hour Snowfall
* "
|
Record Monthly Rainfall
* "
|
Record 24-hour Rainfall
* "
|
Record Minimum Monthly Precipitation
* "
|
Averages | |
Average High Temperature
75.02 °F
|
Average Low Temperature
57.92 °F
|
Average Mean Temp
66.02 °F
|
Average Dew Point
50.00 °F
|
Average Windspeed
5.77 mph
|
Average Wind Direction
270.0
|
Average Morning Relative Humidity
77.0
|
Average Afternoon Relative Humidity
42.0
|
Typical Sky Cover
SCT
|
Average Precipitation (US Only)
*
|
Average Snowfall (US Only)
*
|
|
Daily Counts | |
Days With Precipitation
6
|
Days With Thunderstorms
3
|
Days With Fog
1
|
Days With Snow
0
|
Days With Lows Below Freezing
*
|
Days above 90° F (32.2° C)
0
|
Records | |
Record High
89.06 °F
|
Record Low
35.96 °F
|
Record Wind Speed
45.94 mph
|
Record Monthly Snowfall
* "
|
Record 24-hour Snowfall
* "
|
Record Monthly Rainfall
* "
|
Record 24-hour Rainfall
* "
|
Record Minimum Monthly Precipitation
* "
|
Averages | |
Average High Temperature
71.06 °F
|
Average Low Temperature
50.00 °F
|
Average Mean Temp
60.98 °F
|
Average Dew Point
42.08 °F
|
Average Windspeed
5.77 mph
|
Average Wind Direction
270.0
|
Average Morning Relative Humidity
75.0
|
Average Afternoon Relative Humidity
35.0
|
Typical Sky Cover
CLR
|
Average Precipitation (US Only)
*
|
Average Snowfall (US Only)
*
|
|
Daily Counts | |
Days With Precipitation
2
|
Days With Thunderstorms
1
|
Days With Fog
1
|
Days With Snow
0
|
Days With Lows Below Freezing
5
|
Days above 90° F (32.2° C)
0
|
Records | |
Record High
82.94 °F
|
Record Low
37.04 °F
|
Record Wind Speed
22.94 mph
|
Record Monthly Snowfall
* "
|
Record 24-hour Snowfall
* "
|
Record Monthly Rainfall
* "
|
Record 24-hour Rainfall
* "
|
Record Minimum Monthly Precipitation
* "
|
Averages | |
Average High Temperature
64.94 °F
|
Average Low Temperature
44.06 °F
|
Average Mean Temp
55.04 °F
|
Average Dew Point
35.96 °F
|
Average Windspeed
5.77 mph
|
Average Wind Direction
270.0
|
Average Morning Relative Humidity
72.0
|
Average Afternoon Relative Humidity
35.0
|
Typical Sky Cover
CLR
|
Average Precipitation (US Only)
*
|
Average Snowfall (US Only)
*
|
|
Daily Counts | |
Days With Precipitation
2
|
Days With Thunderstorms
*
|
Days With Fog
1
|
Days With Snow
0
|
Days With Lows Below Freezing
20
|
Days above 90° F (32.2° C)
0
|
Records | |
Record High
84.02 °F
|
Record Low
32.00 °F
|
Record Wind Speed
29.82 mph
|
Record Monthly Snowfall
* "
|
Record 24-hour Snowfall
* "
|
Record Monthly Rainfall
* "
|
Record 24-hour Rainfall
* "
|
Record Minimum Monthly Precipitation
* "
|
Averages | |
Average High Temperature
66.02 °F
|
Average Low Temperature
44.06 °F
|
Average Mean Temp
55.04 °F
|
Average Dew Point
35.06 °F
|
Average Windspeed
6.88 mph
|
Average Wind Direction
270.0
|
Average Morning Relative Humidity
70.0
|
Average Afternoon Relative Humidity
33.0
|
Typical Sky Cover
CLR
|
Average Precipitation (US Only)
*
|
Average Snowfall (US Only)
*
|
|
Daily Counts | |
Days With Precipitation
1
|
Days With Thunderstorms
*
|
Days With Fog
1
|
Days With Snow
0
|
Days With Lows Below Freezing
22
|
Days above 90° F (32.2° C)
0
|
Records | |
Record High
77.00 °F
|
Record Low
33.08 °F
|
Record Wind Speed
28.71 mph
|
Record Monthly Snowfall
* "
|
Record 24-hour Snowfall
* "
|
Record Monthly Rainfall
* "
|
Record 24-hour Rainfall
* "
|
Record Minimum Monthly Precipitation
* "
|
Averages | |
Average High Temperature
69.98 °F
|
Average Low Temperature
48.92 °F
|
Average Mean Temp
60.08 °F
|
Average Dew Point
37.04 °F
|
Average Windspeed
8.06 mph
|
Average Wind Direction
270.0
|
Average Morning Relative Humidity
66.0
|
Average Afternoon Relative Humidity
30.0
|
Typical Sky Cover
CLR
|
Average Precipitation (US Only)
*
|
Average Snowfall (US Only)
*
|
|
Daily Counts | |
Days With Precipitation
2
|
Days With Thunderstorms
1
|
Days With Fog
*
|
Days With Snow
0
|
Days With Lows Below Freezing
8
|
Days above 90° F (32.2° C)
0
|
Records | |
Record High
84.02 °F
|
Record Low
33.98 °F
|
Record Wind Speed
78.06 mph
|
Record Monthly Snowfall
* "
|
Record 24-hour Snowfall
* "
|
Record Monthly Rainfall
* "
|
Record 24-hour Rainfall
* "
|
Record Minimum Monthly Precipitation
* "
|
Averages | |
Average High Temperature
75.92 °F
|
Average Low Temperature
57.02 °F
|
Average Mean Temp
66.92 °F
|
Average Dew Point
42.08 °F
|
Average Windspeed
8.06 mph
|
Average Wind Direction
45.0
|
Average Morning Relative Humidity
65.0
|
Average Afternoon Relative Humidity
30.0
|
Typical Sky Cover
CLR
|
Average Precipitation (US Only)
*
|
Average Snowfall (US Only)
*
|
|
Daily Counts | |
Days With Precipitation
4
|
Days With Thunderstorms
2
|
Days With Fog
*
|
Days With Snow
0
|
Days With Lows Below Freezing
1
|
Days above 90° F (32.2° C)
*
|
Records | |
Record High
91.04 °F
|
Record Low
39.02 °F
|
Record Wind Speed
68.88 mph
|
Record Monthly Snowfall
* "
|
Record 24-hour Snowfall
* "
|
Record Monthly Rainfall
* "
|
Record 24-hour Rainfall
* "
|
Record Minimum Monthly Precipitation
* "
|
Averages | |
Average High Temperature
78.08 °F
|
Average Low Temperature
60.08 °F
|
Average Mean Temp
69.98 °F
|
Average Dew Point
48.92 °F
|
Average Windspeed
6.88 mph
|
Average Wind Direction
45.0
|
Average Morning Relative Humidity
71.0
|
Average Afternoon Relative Humidity
38.0
|
Typical Sky Cover
SCT
|
Average Precipitation (US Only)
*
|
Average Snowfall (US Only)
*
|
|
Daily Counts | |
Days With Precipitation
7
|
Days With Thunderstorms
6
|
Days With Fog
1
|
Days With Snow
0
|
Days With Lows Below Freezing
*
|
Days above 90° F (32.2° C)
1
|
Records | |
Record High
93.02 °F
|
Record Low
42.98 °F
|
Record Wind Speed
57.41 mph
|
Record Monthly Snowfall
* "
|
Record 24-hour Snowfall
* "
|
Record Monthly Rainfall
* "
|
Record 24-hour Rainfall
* "
|
Record Minimum Monthly Precipitation
* "
|
Averages | |
Average High Temperature
78.98 °F
|
Average Low Temperature
62.06 °F
|
Average Mean Temp
71.06 °F
|
Average Dew Point
53.06 °F
|
Average Windspeed
5.77 mph
|
Average Wind Direction
45.0
|
Average Morning Relative Humidity
76.0
|
Average Afternoon Relative Humidity
44.0
|
Typical Sky Cover
SCT
|
Average Precipitation (US Only)
*
|
Average Snowfall (US Only)
*
|
|
Daily Counts | |
Days With Precipitation
10
|
Days With Thunderstorms
6
|
Days With Fog
1
|
Days With Snow
0
|
Days With Lows Below Freezing
0
|
Days above 90° F (32.2° C)
1
|
Records | |
Record High
95.00 °F
|
Record Low
48.02 °F
|
Record Wind Speed
34.47 mph
|
Record Monthly Snowfall
* "
|
Record 24-hour Snowfall
* "
|
Record Monthly Rainfall
* "
|
Record 24-hour Rainfall
* "
|
Record Minimum Monthly Precipitation
* "
|
Averages | |
Average High Temperature
80.96 °F
|
Average Low Temperature
64.94 °F
|
Average Mean Temp
73.04 °F
|
Average Dew Point
57.02 °F
|
Average Windspeed
5.77 mph
|
Average Wind Direction
45.0
|
Average Morning Relative Humidity
78.0
|
Average Afternoon Relative Humidity
46.0
|
Typical Sky Cover
BRK
|
Average Precipitation (US Only)
*
|
Average Snowfall (US Only)
*
|
|
Daily Counts | |
Days With Precipitation
11
|
Days With Thunderstorms
8
|
Days With Fog
1
|
Days With Snow
0
|
Days With Lows Below Freezing
0
|
Days above 90° F (32.2° C)
1
|
Records | |
Record High
96.98 °F
|
Record Low
53.06 °F
|
Record Wind Speed
27.53 mph
|
Record Monthly Snowfall
* "
|
Record 24-hour Snowfall
* "
|
Record Monthly Rainfall
* "
|
Record 24-hour Rainfall
* "
|
Record Minimum Monthly Precipitation
* "
|
Rise 5:11AM
Set 6:56PM
Waning gibbous
Rise11:35PM
Set10:46AM
SATURDAY EVENING
AJS / No delays
Day | Reason | Upper Soil Moisture | Lower Soil Moisture | |
Sunday | Fire danger very low | 26% | 18% | |
Monday | Fire danger very low | 26% | 19% | |
Tuesday | Fire danger very low | 29% | 20% | |
Wednesday | Fire danger very low | 28% | 22% | |
Thursday | Fire danger very low | 22% | 22% | |
Friday | Fire danger very low | 27% | 22% |
Rise 5:11AM
Set 6:56PM
Waning gibbous
Rise11:35PM
Set10:46AM
SATURDAY EVENING
AJS / No delays
Rise 5:11AM
Set 6:56PM
Waning gibbous
Rise11:35PM
Set10:46AM
SATURDAY EVENING
AJS / No delays