Boulder, CO

7:45 PM MDT on May 21, 2013 (GMT -0600)
Elev: 5338 ft
Lon: 105.2° W
Lat: 40.0° N
Source
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Oklahoma Tornado: More coverage on Catastrophic EF-5 Tornado in Oklahoma
News
Miles and Minutes: Okla. Tornado By the Numbers
May 21, 2013
See the facts and figures that defined the Moore, Okla. tornado.
Moore Tornado a Rare EF5
May 21, 2013
EF5/F5 tornadoes are rare, but Moore has seen two of them in the past 15 years.
Power of Moore Tornado Dwarfs Hiroshima Atomic Bomb
May 21, 2013
Wind, humidity and rainfall combined precisely to create the massive killer tornado in Moore, Okla. And when they did, the awesome amount of energy released over that city dwarfed the power of the atomic bomb that leveled Hiroshima.
Okla Governor: We Will Rebuild After Tornado
May 21, 2013
The search and rescue efforts are ongoing in Moore, Okla. after a massive tornado levelled the town and local schools.
Weather Imagery Reveals Oklahoma Tornado
May 21, 2013
The Moore, Oklahoma tornado showed up vividly on satellite and radar.
PTSD Risk after the Oklahoma Tornado
May 21, 2013
In the wake of Mondays devastating tornado that ravaged the town of Moore, Okla., survivors are likely to feel incredible shock and numbness.
Tornado Leaves Small Hospital 'Pretty Much Destroyed'
May 21, 2013
Officials say a tornado hit a small hospital in suburban Oklahoma City, but all the 30 patients inside survived.
Obama: 'Americans From Every Corner of This Country Will Be With Them'
May 21, 2013
Obama has declared a major disaster in Oklahoma, ordering federal aid to supplement state and local recovery efforts. The president also spoke Monday with Oklahoma Gov. Mary Fallin and Rep. Tom Cole, whose home is in the heavily damaged town of Moore.
Why Don't More Homes in Oklahoma Have Basements?
May 21, 2013
The answer lies in the level of the water table and the soil texture in Oklahoma and in states across the Plains.
Photos: Deadly Tornado Outbreak Strikes Plains
May 21, 2013
A tornado outbreak struck the Plains states on May 19, 2013, leaving widespread damage in its wake.
Children and the Tornado: Helping Kids Cope
May 21, 2013
Any time children are involved in a catastrophe, emotional reactions among survivors and across the nation are particularly strong.
Recap: Tornadoes Rake Oklahoma, Kansas, Iowa
May 21, 2013
The weather imagery, video and recap from tornadoes in the Plains on May 19, 2013.
Tornado Took Similar Path to 1999 F5
May 21, 2013
Moore, Oklahoma is no stranger to devastating tornadoes.
'I Expected Chaos:' Scenes from Okla. School
May 21, 2013
A photographer who was among the first to arrive at an Oklahoma Elementary School after a tornado destroyed it, describes the heart-wrenching scene.
A Timeline of Deadly Events in Moore, Okla.
May 21, 2013
Check out this comprehensive timeline of the events that transpired in Moore, Okla.
In Tornado's Wake, Worried Parents Seek Out Kids
May 21, 2013
A desperate search was underway by parents looking to find children after the massive tornado.
Moore Already at Work on Recovery, Says Mayor
May 21, 2013
Glenn Lewis was the mayor of Moore, Okla., when the strongest tornado on record whipped the city in 1999, and he says the most recent storm won't deter the community from rebuilding.
Moore Survivor Finds Dog Buried Alive
May 21, 2013
Watch as a tornado survivor is interrupted in the middle of interview by a little dog digging out of rubble.
Oklahoma Tornado: How to Help
May 21, 2013
There are several agencies asking for donations to help those hit hard by the Oklahoma tornadoes.
Multiple Children Dead at Okla. School
May 21, 2013
More than a dozen children are dead in the devastating Moore, Okla. tornado.
More News Articles
Weather Summary
Kari Kiefer
Weather Underground midday recap for Tuesday, May 21, 2013.

After a devastating severe weather day in the Plains on Monday, severe weather began to fire up again across the nation's mid-section on Tuesday.

The nearly stationary low over the Northern Plains showed signs of gradual weakening as it shifted eastward toward the Mississippi River Valley on Tuesday, while the system's associated cold front trailed southwestward from the low across the Mid-Mississippi Valley through the Southern Plains. Favorable energy and conditions ahead of the cold front combined with the moisture laden conditions of the nation's mid-section set the stage for multiple clusters of thunderstorms to develop from the Midwest into the Ozarks and the Southern Plains. Portions of north-central/northeastern Texas, southern Arkansas, northwestern Louisiana and far southeastern Oklahoma remained at moderate risk of severe thunderstorm activity as environmental conditions remained favorable for tornadoes, damaging wind gusts, and very large hail. In particular, substantial severe weather was expected across north-central Texas to the

ArkLaTex region this afternoon and evening. Areas surrounding this moderate risk region from the Southern Plains to the Tennessee/Ohio valleys and the Lower Great Lakes/Northeast remained at slight risk of severe thunderstorm development with hail, damaging wind gusts, and isolated tornadoes. In addition to severe storms, heavy rains created chances of flood and possible isolated areas of flash flooding from parts eastern Oklahoma through northern Arkansas.

Meanwhile, areas of heavy rain and widely scattered showers continued near the low in the Northern Plains and Upper Mississippi Valley and near and to the north of a nearly stationary frontal boundary extending out ahead of the system from the Great Lakes into the inland areas of the Northeast. Continued precipitation in already saturated areas of the Northern Plains and Upper Midwest maintain flood concerns from parts of North Dakota into northern Wisconsin.

Elsewhere, scattered showers and thunderstorms picked up across the Mid-Atlantic and southeastern corner of the nation through the afternoon.
Weather Underground midday recap for Tuesday, May 21, 2013.

After a devastating severe weather day in the Plains on Monday, severe weather began to fire up again across the nation's mid-section on Tuesday.

The nearly stationary low over the Northern Plains showed signs of gradual weakening as it shifted eastward toward the Mississippi River Valley on Tuesday, while the system's associated cold front trailed southwestward from the low across the Mid-Mississippi Valley through the Southern Plains. Favorable energy and conditions ahead of the cold front combined with the moisture laden conditions of the nation's mid-section set the stage for multiple clusters of thunderstorms to develop from the Midwest into the Ozarks and the Southern Plains. Portions of north-central/northeastern Texas, southern Arkansas, northwestern Louisiana and far southeastern Oklahoma remained at moderate risk of severe thunderstorm activity as environmental conditions remained favorable for tornadoes, damaging wind gusts, and very large hail. In particular, substantial severe weather was expected across north-central Texas to the

ArkLaTex region this afternoon and evening. Areas surrounding this moderate risk region from the Southern Plains to the Tennessee/Ohio valleys and the Lower Great Lakes/Northeast remained at slight risk of severe thunderstorm development with hail, damaging wind gusts, and isolated tornadoes. In addition to severe storms, heavy rains created chances of flood and possible isolated areas of flash flooding from parts eastern Oklahoma through northern Arkansas.

Meanwhile, areas of heavy rain and widely scattered showers continued near the low in the Northern Plains and Upper Mississippi Valley and near and to the north of a nearly stationary frontal boundary extending out ahead of the system from the Great Lakes into the inland areas of the Northeast. Continued precipitation in already saturated areas of the Northern Plains and Upper Midwest maintain flood concerns from parts of North Dakota into northern Wisconsin.

Elsewhere, scattered showers and thunderstorms picked up across the Mid-Atlantic and southeastern corner of the nation through the afternoon.
More News Articles

Boulder Weather at a Glance

Updated 7:45 PM MDT
Elevation
5419 ft
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Now
Scattered Clouds
Scattered Clouds
Temperature
65.0 °F
Feels Like 65.0 °F
Wind(mph)
0.0
Sunrise / Set
5:40 AM
8:15 PM
Moon
Waxing Gibbous
Tonight
Partly Cloudy 43 °F
Partly Cloudy
Tomorrow
Thunderstorm 77 °F
Thunderstorm
20% chance of precipitation
Tomorrow Night
Partly Cloudy 46 °F
Partly Cloudy
10% chance of precipitation
Thursday
Thunderstorm 70 | 50 °F
Thunderstorm
20% chance of precipitation
Friday
Partly Cloudy 82 | 57 °F
Partly Cloudy
Saturday
Partly Cloudy 88 | 59 °F
Partly Cloudy
Tomorrow is forecast to be Warmer than today.
Conditions
Pressure
29.92 in
Visibility
40.0 miles
Clouds
Scattered Clouds 7000 ft
Scattered Clouds 9000 ft
Moisture
Humidity
33%
Rainfall
0.00 in
Snow Depth
22 in, 44 in
METAR
METAR KBJC 220047Z 06009KT 40SM SCT070 SCT090 19/M04 A2992
Don't speak METAR? Read our FAQ.
Weather Radio
Launch Weather Radio
Temperature
Temperature
65.0 °F
43,45,50,54,57,59,63,64,66,66,68,68,68
Dew Point
35 °F
Wind
Speed / Dir
Calm
Wind Gust
0.0 mph
Health
UV
1 out of 16
Pollen
8.20 out of 12
Pollen Forecast
Ozone
Moderate
PM2.5
Good
Flu Activity
No Activity
View Flu Map
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Source: BestForecast
Descriptive Forecast
Tuesday Night
nt_partlycloudy Partly cloudy. Low of 43F. Winds less than 5 mph.
Wednesday
partlycloudy Partly cloudy with thunderstorms and rain showers in the afternoon. High of 77F. Winds less than 5 mph. Chance of rain 20%.
Wednesday Night
nt_partlycloudy Partly cloudy with thunderstorms and rain showers. Low of 46F. Winds less than 5 mph.
Thursday
partlycloudy Partly cloudy with thunderstorms and rain showers in the afternoon. High of 70F. Winds from the SE at 5 to 10 mph. Chance of rain 20%.
Thursday Night
nt_clear Partly cloudy with a chance of a thunderstorm and a chance of rain in the evening, then clear. Low of 50F. Winds from the SSE at 5 to 10 mph. Chance of rain 20%.
Friday
partlycloudy Clear in the morning, then partly cloudy. High of 82F. Winds from the SW at 5 to 10 mph.
Friday Night
nt_partlycloudy Partly cloudy. Low of 57F. Winds from the WSW at 5 to 10 mph.
Saturday
partlycloudy Partly cloudy. High of 88F. Winds from the SSW at 5 to 10 mph.
Saturday Night
nt_clear Clear. Low of 59F. Winds from the NNE at 5 to 10 mph shifting to the West after midnight.
Sunday
partlycloudy Partly cloudy. High of 86F. Winds from the South at 5 to 10 mph.
Sunday Night
nt_partlycloudy Partly cloudy. Low of 63F. Winds from the NNE at 5 to 15 mph shifting to the West after midnight.
Monday
mostlycloudy Mostly cloudy. High of 79F. Winds from the South at 5 to 10 mph.
Monday Night
nt_partlycloudy Clear. Low of 52F. Winds from the West at 10 to 15 mph.
Tuesday
mostlycloudy Mostly cloudy. High of 79F. Winds from the South at 5 to 15 mph.
Tuesday Night
nt_mostlycloudy Partly cloudy. Low of 48F. Winds from the NE at 5 to 10 mph shifting to the WNW after midnight.
Wednesday
partlycloudy Partly cloudy with a chance of a thunderstorm. High of 73F. Winds from the South at 5 to 10 mph. Chance of rain 20%.
Wednesday Night
nt_partlycloudy Partly cloudy. Low of 57F. Winds less than 5 mph.
Thursday
partlycloudy Partly cloudy. High of 84F. Winds less than 5 mph.
Thursday Night
nt_partlycloudy Partly cloudy. Low of 55F. Winds less than 5 mph.
Friday
partlycloudy Partly cloudy. High of 86F. Winds less than 5 mph.
Friday Night
nt_partlycloudy Clear. Low of 59F. Winds less than 5 mph.
Saturday
clear Clear. High of 84F. Winds less than 5 mph.
Saturday Night
nt_clear Clear. Low of 59F. Winds less than 5 mph.
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Weather Forecast for Boulder CO

View Calendar 10-Day Forecast for station KCOBOULD84

Tuesday, 21
Partly Cloudy
73 | 43 °F
Partly Cloudy
Chance of
Precipitation
10%
Wednesday, 22
Thunderstorm
77 | 46 °F
Thunderstorm
Chance of
Precipitation
20%
Thursday, 23
Thunderstorm
70 | 50 °F
Thunderstorm
Chance of
Precipitation
20%
Friday, 24
Partly Cloudy
82 | 57 °F
Partly Cloudy
Chance of
Precipitation
0%
Saturday, 25
Partly Cloudy
88 | 59 °F
Partly Cloudy
Chance of
Precipitation
0%
Sunday, 26
Partly Cloudy
86 | 63 °F
Partly Cloudy
Chance of
Precipitation
0%
Monday, 27
Mostly Cloudy
79 | 52 °F
Mostly Cloudy
Chance of
Precipitation
0%
Tuesday, 28
Mostly Cloudy
79 | 48 °F
Mostly Cloudy
Chance of
Precipitation
0%
Wednesday, 29
Chance of a Thunderstorm
73 | 57 °F
Chance of a Thunderstorm
Chance of
Precipitation
20%
Thursday, 30
Partly Cloudy
84 | 55 °F
Partly Cloudy
Chance of
Precipitation
0%
Source: BestForecast at 2:44 PM MDT on May 21, 2013
Descriptive Forecast
Tuesday Night
nt_partlycloudy Partly cloudy. Low of 43F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 43 | 34 63 | 32 64 | 32 54 | 34
Wind 9 mph West 5 mph NNW 4 mph North 2 mph WSW
Humidity 67% 29% 29% 44%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 38% 60% 48% 35%
Conditions Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy
Sunrise & Sunset
5:40 AM
8:15 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [3.05], Average RMSE [2.52]
The National Weather Service forecast quality is fair. MaxT RMSE [3.18], Average RMSE [3.03] : Use NWS
Source: BestForecast at 2:44 PM MDT on May 21, 2013
Descriptive Forecast
Wednesday
partlycloudy Partly cloudy with thunderstorms and rain showers in the afternoon. High of 77F. Winds less than 5 mph. Chance of rain 20%.
Wednesday Night
nt_partlycloudy Partly cloudy with thunderstorms and rain showers. Low of 46F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 43 | 34 70 | 37 64 | 36 57 | 41
Wind 4 mph West 4 mph East 5 mph East 3 mph ESE
Humidity 71% 29% 33% 51%
Chance of Precip. 10% 20% 20% 10%
Cloud Cover 33% 69% 68% 37%
Conditions Partly Cloudy Thunderstorm Thunderstorm Partly Cloudy
Sunrise & Sunset
5:39 AM
8:16 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.59], Average RMSE [2.27]
The National Weather Service forecast quality is fair. MaxT RMSE [3.33], Average RMSE [3.12] : Use NWS
Source: BestForecast at 2:44 PM MDT on May 21, 2013
Descriptive Forecast
Thursday
partlycloudy Partly cloudy with thunderstorms and rain showers in the afternoon. High of 70F. Winds from the SE at 5 to 10 mph. Chance of rain 20%.
Thursday Night
nt_clear Partly cloudy with a chance of a thunderstorm and a chance of rain in the evening, then clear. Low of 50F. Winds from the SSE at 5 to 10 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 46 | 39 59 | 43 70 | 43 57 | 41
Wind 3 mph SSE 7 mph SE 9 mph SE 4 mph SSE
Humidity 80% 53% 36% 52%
Chance of Precip. 10% 20% 20% 0%
Cloud Cover 31% 52% 44% 1%
Conditions Partly Cloudy Thunderstorm Chance of a Thunderstorm Clear
Sunrise & Sunset
5:38 AM
8:16 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [3.20], Average RMSE [2.88]
The National Weather Service forecast quality is poor. MaxT RMSE [3.87], Average RMSE [3.27] : Use NWS
Source: BestForecast at 2:44 PM MDT on May 21, 2013
Descriptive Forecast
Friday
partlycloudy Clear in the morning, then partly cloudy. High of 82F. Winds from the SW at 5 to 10 mph.
Friday Night
nt_partlycloudy Partly cloudy. Low of 57F. Winds from the WSW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 50 | 37 75 | 28 82 | 27 64 | 25
Wind 6 mph West 7 mph SSE 6 mph SW 10 mph West
Humidity 57% 16% 13% 22%
Chance of Precip. 10% 0% 0% 0%
Cloud Cover 0% 8% 48% 65%
Conditions Clear Clear Partly Cloudy Mostly Cloudy
Sunrise & Sunset
5:38 AM
8:17 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [3.15], Average RMSE [3.04]
The National Weather Service forecast quality is poor. MaxT RMSE [5.21], Average RMSE [3.95] : Use NWS
Source: BestForecast at 2:44 PM MDT on May 21, 2013
Descriptive Forecast
Saturday
partlycloudy Partly cloudy. High of 88F. Winds from the SSW at 5 to 10 mph.
Saturday Night
nt_clear Clear. Low of 59F. Winds from the NNE at 5 to 10 mph shifting to the West after midnight.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 59 | 27 82 | 21 82 | 23 66 | 23
Wind 8 mph West 3 mph SE 3 mph East 9 mph West
Humidity 28% 10% 10% 19%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 32% 6% 39% 11%
Conditions Partly Cloudy Clear Partly Cloudy Clear
Sunrise & Sunset
5:37 AM
8:18 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [3.54], Average RMSE [2.51]
The National Weather Service forecast quality is poor. MaxT RMSE [5.92], Average RMSE [3.98] : Use NWS
Source: BestForecast at 2:44 PM MDT on May 21, 2013
Descriptive Forecast
Sunday
partlycloudy Partly cloudy. High of 86F. Winds from the South at 5 to 10 mph.
Sunday Night
nt_partlycloudy Partly cloudy. Low of 63F. Winds from the NNE at 5 to 15 mph shifting to the West after midnight.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 61 | 18 81 | 19 84 | 19 70 | 21
Wind 9 mph West 5 mph ESE 3 mph ENE 11 mph West
Humidity 19% 9% 9% 15%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 29% 80% 61% 1%
Conditions Partly Cloudy Mostly Cloudy Partly Cloudy Clear
Sunrise & Sunset
5:37 AM
8:19 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.95], Average RMSE [5.93]
The National Weather Service forecast quality is poor. MaxT RMSE [6.61], Average RMSE [5.46] : Use NWS
Source: BestForecast at 2:44 PM MDT on May 21, 2013
Descriptive Forecast
Monday
mostlycloudy Mostly cloudy. High of 79F. Winds from the South at 5 to 10 mph.
Monday Night
nt_partlycloudy Clear. Low of 52F. Winds from the West at 10 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 64 | 18 75 | 19 79 | 21 68 | 21
Wind 8 mph WSW 6 mph East 9 mph WNW 11 mph West
Humidity 16% 12% 11% 17%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 37% 82% 74% 0%
Conditions Partly Cloudy Mostly Cloudy Mostly Cloudy Clear
Sunrise & Sunset
5:36 AM
8:20 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.51], Average RMSE [6.01]
The National Weather Service forecast quality is poor. MaxT RMSE [7.23], Average RMSE [6.08] : Use NWS
Source: BestForecast at 2:44 PM MDT on May 21, 2013
Descriptive Forecast
Tuesday
mostlycloudy Mostly cloudy. High of 79F. Winds from the South at 5 to 15 mph.
Tuesday Night
nt_mostlycloudy Partly cloudy. Low of 48F. Winds from the NE at 5 to 10 mph shifting to the WNW after midnight.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 52 | 19 75 | 25 73 | 28 57 | 34
Wind 8 mph West 12 mph SE 5 mph SE 7 mph NW
Humidity 27% 14% 18% 39%
Chance of Precip. 0% 0% 10% 0%
Cloud Cover 19% 34% 88% 96%
Conditions Clear Partly Cloudy Mostly Cloudy Overcast
Sunrise & Sunset
5:35 AM
8:20 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [8.11], Average RMSE [6.99]
Source: BestForecast at 2:44 PM MDT on May 21, 2013
Descriptive Forecast
Wednesday
partlycloudy Partly cloudy with a chance of a thunderstorm. High of 73F. Winds from the South at 5 to 10 mph. Chance of rain 20%.
Wednesday Night
nt_partlycloudy Partly cloudy. Low of 57F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 48 | 34 72 | 36 61 | 39 66 | 37
Wind 7 mph West 4 mph SE 1 mph West 3 mph WNW
Humidity 58% 26% 44% 34%
Chance of Precip. 0% 20% 10% 10%
Cloud Cover 44% 53% 63% 43%
Conditions Partly Cloudy Chance of a Thunderstorm Partly Cloudy Partly Cloudy
Sunrise & Sunset
5:35 AM
8:21 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [9.41], Average RMSE [8.16]
Source: BestForecast at 2:44 PM MDT on May 21, 2013
Descriptive Forecast
Thursday
partlycloudy Partly cloudy. High of 84F. Winds less than 5 mph.
Thursday Night
nt_partlycloudy Partly cloudy. Low of 55F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 59 | 36 68 | 32 79 | 28 64 | 28
Wind 3 mph West 2 mph SE 4 mph NW 3 mph West
Humidity 41% 25% 14% 24%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 23% 27% 31% 32%
Conditions Clear Partly Cloudy Partly Cloudy Partly Cloudy
Sunrise & Sunset
5:34 AM
8:22 PM
Source: BestForecast at 2:44 PM MDT on May 21, 2013
Descriptive Forecast
Friday
partlycloudy Partly cloudy. High of 86F. Winds less than 5 mph.
Friday Night
nt_partlycloudy Clear. Low of 59F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 57 | 28 70 | 27 82 | 27 66 | 27
Wind 5 mph West 2 mph SSW 4 mph WNW 3 mph WNW
Humidity 32% 20% 12% 22%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 34% 37% 40% 27%
Conditions Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy
Sunrise & Sunset
Sun does not rise
Source: BestForecast at 2:44 PM MDT on May 21, 2013
Descriptive Forecast
Saturday
clear Clear. High of 84F. Winds less than 5 mph.
Saturday Night
nt_clear Clear. Low of 59F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 59 | 28 82 | 23 84 | 19 57 | 27
Wind 4 mph West 2 mph SE 1 mph North 4 mph WSW
Humidity 31% 11% 8% 30%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 13% % % %
Conditions Clear Clear Clear Clear
Sunrise & Sunset
Sun does not rise
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
History & Almanac
May 21, 2013 Max Temp Min Temp
Normal (KBJC) 70 °F 46 °F
Record (KBJC) 89 °F (2005) 32 °F (2001)
Yesterday 66.5 °F 47.8 °F
Choose a date
Earthquake Activity
City Distance Mag. Time & Date
No recent earthquake activity has been reported nearby.
Minimum magnitude displayed is 2.5.
More information at USGS.gov
Air Quality
  Air Quality AQ Index Pollutant
Yesterday Good
OZONE
Yesterday Good
PM10
Current Moderate
OZONE
Current Good
PM2.5
Tuesday Good
OZONE
Tuesday Good
PM2.5
Wednesday Moderate
OZONE
Wednesday Good
PM2.5
Astronomy
May. 21, 2013 Rise Set
Actual Time 5:40 AM MDT 8:15 PM MDT
Civil Twilight 5:09 AM MDT 8:46 PM MDT
Nautical Twilight 4:30 AM MDT 9:25 PM MDT
Astronomical Twilight 3:46 AM MDT 10:09 PM MDT
Moon 4:31 PM MDT (5/21) 3:09 AM MDT (5/21)
Length Of Visible Light 15h 37m
Length of Day
14h 34m
Tomorrow will be 1m 37s longer.
Waxing Gibbous, 87% of the Moon is Illuminated
Today
Waxing Gibbous
May 24
Full
May 31
Last Quarter
Jun 8
New
Jun 16
First Quarter
Visit Astronomy
Today's Extremes
State Highs State Lows
77 °F
Delta
77 °F
Lamar
75 °F
Pueblo
75 °F
La Junta
74 °F
Grand Junction
23 °F
Monarch Pass
26 °F
Copper Mountain
27 °F
Alamosa
30 °F
Leadville
30 °F
Durango
Record Extremes
Snow Depth
Station Depth Elevation
Niwot 22 in 9910 ft
University Camp 44 in 10300 ft
Wild Basin 19 in 9560 ft
Arrow 0 in 9680 ft
Echo Lake 17 in 10600 ft
Snow Depth Reports — Snow Depth Map
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Travel Planning
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Aviation
City Temp. Conditions Updated
Broomfield 66 °F Scattered Clouds 6:47 PM MDT
Erie 66 °F Scattered Clouds 7:35 PM MDT
Denver 67 °F Scattered Clouds 6:53 PM MDT
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Flight To ETA Status
FFT837
Washington, DC 		KDEN 07:32PM On Time
SWA1574
Raleigh/Durham, NC 		KDEN 07:35PM On Time
SKW1355
Colorado Springs, CO 		KDEN 07:38PM On Time
SWA2358
Chicago, IL 		KDEN 07:42PM On Time
Flight Tracker by FlightAware FlightAware
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Type Condition
Flight Rule: VFR (KBJC)
Wind Speed: 9.0 kts.
Wind Dir: 119° (ESE)
Ceiling: Unlimited

METAR KBJC 220047Z 06009KT 40SM SCT070 SCT090 19/M04 A2992

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Nearby Events
Event Date Forecast
Dawson Wallace DANCE Project: A Children's Rainforest Odyssey 7:00 PM MDT
2013-04-17		 Chance of Snow, 34°F
the Makerie Sewing 2:00 PM MDT
2013-04-18		 Mostly Cloudy, 36°F
Event data courtesy eviesays.com
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Weather Stations
Station Location Temp. Dew Point Humidity Wind Precipitation Elevation Updated Type Website
Majestic Heights, Boulder, CO 65.0 °F 35 °F 33% ESE  at  0.0 mph 0.00 in / hr 5419 ft 7:45 PM MDT Rapid Fire  
Cherryvale, Boulder, CO 65.0 °F 36 °F 34% North  at  0.0 mph 0.00 in / hr 5291 ft 7:45 PM MDT Rapid Fire  
South Boulder, Boulder, CO 65.5 °F 41 °F 40% ENE  at  0.0 mph 0.00 in / hr 5395 ft 7:29 PM MDT Normal  
Cherryvale, Boulder, CO 64.0 °F 36 °F 35% South  at  0.0 mph 0.00 in / hr 5300 ft 7:45 PM MDT Rapid Fire  
Aurora 7, Boulder, CO 63.7 °F 33 °F 32% SE  at  5.4 mph 0.00 in / hr 5295 ft 7:45 PM MDT Rapid Fire  
Arapahoe Ridge, Boulder, CO 65.3 °F 30 °F 27% SE  at  2.0 mph 0.00 in / hr 5262 ft 7:44 PM MDT Normal  
MAP BOULDER CO , Boulder, CO 63 °F 24 °F 22% North  at  - 0.00 in / hr 5508 ft 7:00 PM MDT MADIS
Peloton, Boulder, CO 69.5 °F - - North  at  - - / hr 5380 ft 7:39 PM MDT Normal  
Shanahan Ridge, Boulder, CO 61.2 °F 28 °F 28% NE  at  0.0 mph - / hr 5700 ft 7:32 PM MDT Normal
INTERNET NCAR Table Mesa , Boulder, CO 62 °F 29 °F 28% NE  at  3 mph 0.00 in / hr 6184 ft 7:07 PM MDT MADIS
Davidson Mesa, Boulder, CO 69.8 °F 26 °F 19% East  at  3.8 mph 0.00 in / hr 5663 ft 7:01 PM MDT Normal  
Whittier, Boulder, CO 67.5 °F 34 °F 29% ESE  at  0.0 mph 0.00 in / hr 5318 ft 7:45 PM MDT Rapid Fire  
INTERNET NCAR Foothills Lab , Boulder, CO 66 °F 32 °F 27% East  at  4 mph 0.00 in / hr 5331 ft 7:05 PM MDT MADIS
15th and High St., Boulder, CO 64.3 °F 30 °F 28% East  at  3.0 mph 0.00 in / hr 5423 ft 7:45 PM MDT Normal  
Old North Boulder, Boulder, CO 66.7 °F 36 °F 32% ESE  at  0.9 mph 0.00 in / hr 5370 ft 7:45 PM MDT Normal  
UDFCD Louisville_Lake, Louisville, CO 62 °F 32 °F 32% NE  at  3 mph 0.00 in / hr 5580 ft 7:25 PM MDT MADIS
Saddle Ridge, Louisville, CO 63.6 °F 32 °F 31% NE  at  0.0 mph 0.00 in / hr 5565 ft 7:45 PM MDT Normal  
APRSWXNET Boulder CO , Boulder, CO 64 °F 33 °F 31% SSE  at  0 mph 0.00 in / hr 5446 ft 7:33 PM MDT MADIS
Davidson, Lafayette, CO 64.6 °F 33 °F 30% East  at  3.1 mph 0.00 in / hr 5404 ft 7:40 PM MDT Normal
63rd St & Jay Rd, Boulder, CO 66.9 °F 32 °F 27% East  at  0.0 mph 0.00 in / hr 5202 ft 7:40 PM MDT Normal  
Steel Ranch, Louisville, CO 66.4 °F 30 °F 25% East  at  3.8 mph 0.00 in / hr 5370 ft 7:45 PM MDT Rapid Fire  
Northwest Rock Creek, Superior, CO 63.0 °F 33 °F 33% NE  at  2.0 mph 0.00 in / hr 5531 ft 7:33 PM MDT Normal  
Rock Creek - Snyder, Superior, CO 68.2 °F - - ESE  at  3.0 mph 0.00 in / hr 5515 ft 7:45 PM MDT Normal
Quince Ave., Boulder, CO 64.2 °F 34 °F 32% SSE  at  0.0 mph 0.00 in / hr 5541 ft 7:45 PM MDT Normal  
Eldorado Springs, CO, Eldorado Springs, CO 61.3 °F 24 °F 24% North  at  0.0 mph 0.00 in / hr 5800 ft 7:44 PM MDT Normal
INTERNET Rocky Flats Nat Wind Tech Ctr , Eldorado Springs, CO 60 °F 34 °F 38% ENE  at  10 mph 0.00 in / hr 6085 ft 7:28 PM MDT MADIS
Boulder Fire Training Ctr., Boulder, CO 65.3 °F 33 °F 30% East  at  3.0 mph 0.00 in / hr 5141 ft 7:44 PM MDT Rapid Fire  
Rock Creek-Hillcrest, Superior, CO 64.4 °F 29 °F 26% East  at  8.0 mph 0.00 in / hr 5581 ft 7:45 PM MDT Rapid Fire
Heatherwood, Boulder, CO 65.9 °F 36 °F 33% ENE  at  2.0 mph 0.00 in / hr 5289 ft 7:45 PM MDT Rapid Fire  
MesoWest Rocky Flats - North , Broomfield, CO 65 °F - - NE  at  10 mph 0.00 in / hr 5912 ft 6:00 PM MDT MADIS
Heatherwood, Boulder, CO 65.3 °F 33 °F 30% NE  at  2.0 mph - / hr 5326 ft 7:41 PM MDT Normal  
Waneka Landing, Lafayette, CO 64.5 °F 28 °F 25% NE  at  5.0 mph 0.00 in / hr 5367 ft 7:45 PM MDT Normal  
Eldorado K-8 School, Superior, CO 63.0 °F 28 °F 27% North  at  11.0 mph 0.00 in / hr 5600 ft 7:45 PM MDT Rapid Fire
Gunbarrel Green, Boulder, CO 66.6 °F - 19% North  at  - 0.00 in / hr 5239 ft 7:44 PM MDT Rapid Fire
Fountain Greens, Boulder, CO 64.8 °F 34 °F 32% SSE  at  1.3 mph 0.00 in / hr 5343 ft 7:45 PM MDT Rapid Fire  
Pinebrook Hills, Boulder, CO 60.1 °F 29 °F 31% WSW  at  0.0 mph 0.00 in / hr 6270 ft 7:29 PM MDT Normal
APRSWXNET Lafayette CO , Louisville, CO 66 °F 29 °F 25% NE  at  0 mph 0.00 in / hr 5255 ft 7:33 PM MDT MADIS
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