Great Falls, MT

6:28 PM MDT on June 18, 2013 (GMT -0600)
Elev: 3366 ft
Lon: 111.3° W
Lat: 47.5° N
Source
Rapid Fire Updates™
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Active Advisory: Severe Thunderstorm Watch,  Special Statement (US Severe Weather)
Tropical Weather: Tropical Depression Two (North Atlantic) Tropical Storm Leepi (Western Pacific)
News
Air Pollution Linked to Autism
June 18, 2013
Women who are exposed to high levels of air pollution during pregnancy might be twice as likely to have a child with autism, according to a new study from the Harvard School of Public Health thats published in the journal Environmental Health Perspectives.
Largest Supermoon of the Year Peaks This Weekend
June 18, 2013
Get your telescopes ready -- the largest full moon of the year is coming!
The World's Most Amazing Places: Fly Geyser
June 18, 2013
The World's Most Amazing Places: Fly Geyser
Volcano Near Mexico City Rumbles to Life
June 18, 2013
With 4 million people in its shadow, a massive volcano in Mexico rumbles back to life.
Tropical Depression Two Moves West
June 18, 2013
Tropical Depression Two is moving west over Guatemala and Mexico.
Unprecedented Views of Mercury's Surface
June 18, 2013
Check out incredible views of a planet that hasn't been photographed by NASA in nearly 40 years.
Meteorologists Meet to Mull Weird British Weather
June 18, 2013
The weather in London has been far from normal lately, and the locals want to find out why.
NASA Picks 8 New Astronauts, 4 are Women
June 17, 2013
NASA has eight new astronauts.
Water Rescues, Heavy Flooding in Eastern Missouri
June 17, 2013
Heavy rain makes for a nightmare in cities from St. Louis to Cape Girardeau.
NASA Satellite Images of the Month: May 2013
June 17, 2013
A collection of NASA Satellite images of the month, from May 2013.
How 10 Cities are Adapting to Global Warming
June 17, 2013
See some of the cities threatened the most by climate change and how they'll remedy the rising seas.
Floods Kill 23 in Northern India; Dozens Missing
June 17, 2013
Deadly flooding continues in India, washing away roads and buildings.
Scientists Moving 15-Ton Magnet from NY to Chicago
June 17, 2013
It'll take more than a month to get a magnet this large from New York to Chicago.
Investigators Seek Massive Wildfire's 'Point of Origin'
June 17, 2013
Investigators want to know exactly where the Black Forest Fire started.
Mexico Reports Severe Flooding in Border City
June 16, 2013
Heavy weekend rains have caused severe flooding in the Mexican city of Piedras Negras on the border with Texas. Coahuila state officials say one person died and 10,000 houses are damaged, leaving 40,000 peoples homeless.
Can We Control the Weather?
June 17, 2013
Humans have dreamed of taking control of the weather long before Superman and James Bond villians plotted world domination. Here's a look at some of the colorful ideas behind weather manipulation.
Rain Helps Firefighters Battling Colo. Blaze
June 18, 2013
Periods of rain have helped firefighters get a handle on the Black Forest Fire out of Colorado Springs.
End of BP Cleaning Crews Leaves Questions on Gulf
June 16, 2013
Remnants of Oil Spill Linger Despite End of Cleanup
Fracking Fuels Water Fights In Nation's Dry Spots
June 16, 2013
Fracking is increasing competition for water, driving up the price of the precious resource and burdening already depleted aquifers and rivers in certain drought-stricken stretches.
Earthquakes Rattle Mexico, Central America
June 16, 2013
A pair of earthquakes rattled Latin America over the weekend.
More News Articles
Weather Summary
Kari Kiefer
Weather Underground midday recap for Tuesday, June 18, 2013.

Wet and unsettled weather continued for parts of the East and South on Tuesday as a cold front dropped southeastward across the Midwest and Northeast and reinforced another frontal boundary extending from southern New England through the Southern Plains. Rain and thunderstorm activity developed ahead the advancing cold front in parts of the Ohio Valley into New England, while a cooler airmass followed behind the cold front and led to cooler daytimes highs in the Upper Great Lakes and Northeast. Areas of scattered showers and thunderstorms developed near and to the south of the main frontal disturbance from the Mid-Atlantic and Southeast through the Central and Southern Plains. The Storm Prediction Center issued a slight risk of severe thunderstorms for parts of the lower Ohio Valley and eastern and central Carolinas through the afternoon and evenings. Areas of the Ohio Valley were at primary risks of damaging wind gusts and hail, while areas of the Carolinas remained at risk of damaging wind gusts.

Meanwhile, behind this activity impulses from from the West enhanced precipitation and thunderstorm activity in the High Plains and created the potential for strong to severe thunderstorms for a large part of the region. The Storm Prediction Center issued a slight risk of severe thunderstorm development from this afternoon through tonight with threats of hail and damaging wind gusts.

Elsewhere, an upper level low located off the Pacific Northwest coast brought progressively better chances for showers and thunderstorm activity to the Northwest. The Storm Prediction Center issued a slight risk of severe thunderstorm development for the Northern Rockies with hail and damaging wind gusts possible from this afternoon through tonight.
Weather Underground midday recap for Tuesday, June 18, 2013.

Wet and unsettled weather continued for parts of the East and South on Tuesday as a cold front dropped southeastward across the Midwest and Northeast and reinforced another frontal boundary extending from southern New England through the Southern Plains. Rain and thunderstorm activity developed ahead the advancing cold front in parts of the Ohio Valley into New England, while a cooler airmass followed behind the cold front and led to cooler daytimes highs in the Upper Great Lakes and Northeast. Areas of scattered showers and thunderstorms developed near and to the south of the main frontal disturbance from the Mid-Atlantic and Southeast through the Central and Southern Plains. The Storm Prediction Center issued a slight risk of severe thunderstorms for parts of the lower Ohio Valley and eastern and central Carolinas through the afternoon and evenings. Areas of the Ohio Valley were at primary risks of damaging wind gusts and hail, while areas of the Carolinas remained at risk of damaging wind gusts.

Meanwhile, behind this activity impulses from from the West enhanced precipitation and thunderstorm activity in the High Plains and created the potential for strong to severe thunderstorms for a large part of the region. The Storm Prediction Center issued a slight risk of severe thunderstorm development from this afternoon through tonight with threats of hail and damaging wind gusts.

Elsewhere, an upper level low located off the Pacific Northwest coast brought progressively better chances for showers and thunderstorm activity to the Northwest. The Storm Prediction Center issued a slight risk of severe thunderstorm development for the Northern Rockies with hail and damaging wind gusts possible from this afternoon through tonight.
More News Articles

Great Falls Weather at a Glance

Updated 6:28 PM MDT
Elevation
3218 ft
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Now
Clear
Clear
Temperature
83.3 °F
Feels Like 82 °F
Wind(mph)
5.0
Sunrise / Set
5:27 AM
9:25 PM
Moon
Waxing Gibbous
Tonight
Thunderstorm 55 °F
T-storms
60% chance of precipitation
Tomorrow
Thunderstorm 82 °F
T-storms
80% chance of precipitation
Tomorrow Night
Thunderstorm 52 °F
T-storms
80% chance of precipitation
Thursday
Chance of a Thunderstorm 75 | 48 °F
Chance of a Thunderstorm
20% chance of precipitation
Friday
Mostly Cloudy 72 | 46 °F
Mostly Cloudy
Saturday
Chance of a Thunderstorm 73 | 50 °F
Chance of T-storms
40% chance of precipitation
Tomorrow is forecast to be Much Cooler than today.
Conditions
Pressure
29.64 in
Visibility
10.0 miles
Clouds
Clear -
Moisture
Humidity
35%
Rainfall
0.00 in
Snow Depth
Not available.
METAR
METAR KGTF 182353Z 10006KT 10SM CLR 27/12 A2972 RMK AO2 SLP037 T02670122 10289 20250 56016
Don't speak METAR? Read our FAQ.
Weather Radio
Weather Radio Index
Temperature
Heat Index
82 °F
Dew Point
53 °F
Wind
Speed / Dir
5.0 mph from SW
Wind Gust
17.0 mph
Health
UV
4 out of 16
Pollen
6.80 out of 12
Pollen Forecast
Air Quality
Not available.
Flu Activity
No Activity
View Flu Map
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Source: BestForecast
Descriptive Forecast
Tuesday Night
nt_tstorms Partly cloudy with thunderstorms and rain showers, then a chance of a thunderstorm and a chance of rain after midnight. Low of 55F. Winds from the East at 10 to 15 mph shifting to the NNW after midnight. Chance of rain 60%.
Wednesday
tstorms Partly cloudy with a chance of a thunderstorm and a chance of rain in the morning, then overcast with thunderstorms and rain showers. High of 82F. Winds from the NW at 5 to 10 mph. Chance of rain 80%.
Wednesday Night
nt_tstorms Overcast with thunderstorms and rain showers in the evening, then partly cloudy with a chance of rain. Low of 52F. Breezy. Winds from the WSW at 10 to 20 mph with gusts to 30 mph. Chance of rain 80% with rainfall amounts near 0.2 in. possible.
Thursday
partlycloudy Partly cloudy with a chance of rain, then a chance of a thunderstorm and a chance of rain in the afternoon. High of 75F. Windy. Winds from the SW at 20 to 30 mph with gusts to 40 mph. Chance of rain 20%.
Thursday Night
nt_partlycloudy Partly cloudy with a chance of a thunderstorm and a chance of rain in the evening, then overcast. Low of 48F. Winds from the WNW at 5 to 20 mph.
Friday
mostlycloudy Overcast in the morning, then mostly cloudy. High of 72F. Winds less than 5 mph.
Friday Night
nt_chancetstorms Partly cloudy with a chance of a thunderstorm and rain. Low of 46F. Winds from the East at 5 to 10 mph shifting to the NNE after midnight. Chance of rain 50%.
Saturday
chancetstorms Overcast with a chance of rain, then a chance of a thunderstorm and rain in the afternoon. High of 73F. Winds less than 5 mph. Chance of rain 40%.
Saturday Night
nt_clear Clear with a chance of a thunderstorm. Low of 50F. Winds from the SW at 5 to 15 mph. Chance of rain 20%.
Sunday
mostlycloudy Mostly cloudy. High of 79F. Winds from the SW at 5 to 15 mph.
Sunday Night
nt_mostlycloudy Mostly cloudy. Low of 54F. Winds from the West at 5 to 10 mph shifting to the SW after midnight.
Monday
cloudy Overcast. High of 82F. Winds from the SW at 5 to 15 mph.
Monday Night
nt_mostlycloudy Overcast. Low of 55F. Winds from the SW at 10 to 15 mph.
Tuesday
partlycloudy Clear. High of 75F. Breezy. Winds from the WSW at 15 to 25 mph.
Tuesday Night
nt_clear Clear. Low of 57F. Winds from the WSW at 5 to 20 mph.
Wednesday
clear Clear. High of 91F. Winds from the WSW at 10 to 15 mph.
Wednesday Night
nt_clear Clear. Low of 57F. Winds from the West at 5 to 15 mph.
Thursday
clear Clear. High of 90F. Winds from the West at 5 to 10 mph.
Thursday Night
nt_partlycloudy Partly cloudy with a chance of a thunderstorm. Low of 57F. Winds less than 5 mph. Chance of rain 20%.
Friday
partlycloudy Partly cloudy with a chance of a thunderstorm. High of 88F. Winds less than 5 mph. Chance of rain 20%.
Friday Night
nt_partlycloudy Partly cloudy with a chance of a thunderstorm. Low of 55F. Winds less than 5 mph. Chance of rain 20%.
Saturday
clear Clear. High of 86F. Winds less than 5 mph.
Saturday Night
nt_clear Clear. Low of 55F. Winds from the NNE at 5 to 10 mph shifting to the SE after midnight.
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Nowcast
Severe Thunderstorm Watch 326 in effect until 10 PM MDT this evening...

Great Falls Weather Forecast

View Calendar 10-Day Forecast for Great Falls Weather Station KMTGREAT5

Tuesday, 18
Thunderstorm
93 | 55 °F
T-storms
Chance of
Precipitation
60%
Wednesday, 19
Thunderstorm
82 | 52 °F
T-storms
Chance of
Precipitation
80%
Thursday, 20
Chance of a Thunderstorm
75 | 48 °F
Chance of a Thunderstorm
Chance of
Precipitation
20%
Friday, 21
Mostly Cloudy
72 | 46 °F
Mostly Cloudy
Chance of
Precipitation
0%
Saturday, 22
Chance of a Thunderstorm
73 | 50 °F
Chance of T-storms
Chance of
Precipitation
40%
Sunday, 23
Mostly Cloudy
79 | 54 °F
Mostly Cloudy
Chance of
Precipitation
0%
Monday, 24
Overcast
82 | 55 °F
Overcast
Chance of
Precipitation
0%
Tuesday, 25
Partly Cloudy
75 | 57 °F
Partly Cloudy
Chance of
Precipitation
0%
Wednesday, 26
Clear
91 | 57 °F
Clear
Chance of
Precipitation
0%
Thursday, 27
Clear
90 | 57 °F
Clear
Chance of
Precipitation
0%
Source: BestForecast at 2:39 PM MDT on June 18, 2013
Descriptive Forecast
Tuesday Night
nt_tstorms Partly cloudy with thunderstorms and rain showers, then a chance of a thunderstorm and a chance of rain after midnight. Low of 55F. Winds from the East at 10 to 15 mph shifting to the NNW after midnight. Chance of rain 60%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 55 | 48 86 | 54 84 | 50 70 | 55
Wind 5 mph South 6 mph ESE 10 mph ESE 10 mph North
Humidity 77% 31% 30% 57%
Chance of Precip. 10% 60% 60% 60%
Cloud Cover 40% 68% 72% 53%
Conditions Partly Cloudy Thunderstorm Thunderstorm Chance of a Thunderstorm
Sunrise & Sunset
5:27 AM
9:25 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [3.01], Average RMSE [2.33]
The National Weather Service forecast quality is poor. MaxT RMSE [4.41], Average RMSE [2.10] : Use NWS
Source: BestForecast at 2:39 PM MDT on June 18, 2013
Descriptive Forecast
Wednesday
tstorms Partly cloudy with a chance of a thunderstorm and a chance of rain in the morning, then overcast with thunderstorms and rain showers. High of 82F. Winds from the NW at 5 to 10 mph. Chance of rain 80%.
Wednesday Night
nt_tstorms Overcast with thunderstorms and rain showers in the evening, then partly cloudy with a chance of rain. Low of 52F. Breezy. Winds from the WSW at 10 to 20 mph with gusts to 30 mph. Chance of rain 80% with rainfall amounts near 0.2 in. possible.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 57 | 52 73 | 55 75 | 54 61 | 50
Wind 8 mph West 4 mph NNW 14 mph WSW 19 mph SW
Humidity 82% 53% 48% 65%
Chance of Precip. 60% 70% 80% 80%
Cloud Cover 56% 92% 92% 61%
Conditions Chance of a Thunderstorm Thunderstorm Thunderstorm Chance of Rain
Sunrise & Sunset
5:27 AM
9:25 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.20], Average RMSE [2.50]
The National Weather Service forecast quality is poor. MaxT RMSE [4.23], Average RMSE [1.79] : Use NWS
Source: BestForecast at 2:39 PM MDT on June 18, 2013
Descriptive Forecast
Thursday
partlycloudy Partly cloudy with a chance of rain, then a chance of a thunderstorm and a chance of rain in the afternoon. High of 75F. Windy. Winds from the SW at 20 to 30 mph with gusts to 40 mph. Chance of rain 20%.
Thursday Night
nt_partlycloudy Partly cloudy with a chance of a thunderstorm and a chance of rain in the evening, then overcast. Low of 48F. Winds from the WNW at 5 to 20 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 52 | 45 63 | 39 70 | 39 55 | 37
Wind 23 mph SW 27 mph SW 16 mph WSW 2 mph North
Humidity 72% 40% 31% 52%
Chance of Precip. 80% 30% 20% 0%
Cloud Cover 55% 62% 60% 85%
Conditions Chance of Rain Chance of a Thunderstorm Chance of a Thunderstorm Mostly Cloudy
Sunrise & Sunset
5:27 AM
9:26 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [3.64], Average RMSE [2.31]
The National Weather Service forecast quality is poor. MaxT RMSE [4.33], Average RMSE [2.84] : Use NWS
Source: BestForecast at 2:39 PM MDT on June 18, 2013
Descriptive Forecast
Friday
mostlycloudy Overcast in the morning, then mostly cloudy. High of 72F. Winds less than 5 mph.
Friday Night
nt_chancetstorms Partly cloudy with a chance of a thunderstorm and rain. Low of 46F. Winds from the East at 5 to 10 mph shifting to the NNE after midnight. Chance of rain 50%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 48 | 36 63 | 37 63 | 43 57 | 48
Wind 3 mph SSW 2 mph NNE 8 mph ENE 4 mph East
Humidity 64% 39% 46% 74%
Chance of Precip. 0% 0% 20% 20%
Cloud Cover 95% 88% 67% 8%
Conditions Overcast Mostly Cloudy Chance of a Thunderstorm Chance of Rain
Sunrise & Sunset
5:27 AM
9:26 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.64], Average RMSE [3.12]
The National Weather Service forecast quality is poor. MaxT RMSE [4.74], Average RMSE [3.39] : Use NWS
Source: BestForecast at 2:39 PM MDT on June 18, 2013
Descriptive Forecast
Saturday
chancetstorms Overcast with a chance of rain, then a chance of a thunderstorm and rain in the afternoon. High of 73F. Winds less than 5 mph. Chance of rain 40%.
Saturday Night
nt_clear Clear with a chance of a thunderstorm. Low of 50F. Winds from the SW at 5 to 15 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 48 | 46 63 | 46 61 | 46 55 | 43
Wind 2 mph WNW 5 mph NW 8 mph WNW 9 mph SW
Humidity 89% 56% 58% 59%
Chance of Precip. 30% 20% 20% 10%
Cloud Cover 99% 97% 95% 1%
Conditions Chance of Rain Chance of a Thunderstorm Chance of a Thunderstorm Clear
Sunrise & Sunset
5:28 AM
9:26 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.27], Average RMSE [3.25]
The National Weather Service forecast quality is poor. MaxT RMSE [5.00], Average RMSE [4.15] : Use NWS
Source: BestForecast at 2:39 PM MDT on June 18, 2013
Descriptive Forecast
Sunday
mostlycloudy Mostly cloudy. High of 79F. Winds from the SW at 5 to 15 mph.
Sunday Night
nt_mostlycloudy Mostly cloudy. Low of 54F. Winds from the West at 5 to 10 mph shifting to the SW after midnight.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 50 | 39 72 | 41 64 | 41 55 | 43
Wind 10 mph SSW 9 mph WSW 7 mph West 3 mph SSW
Humidity 63% 33% 43% 59%
Chance of Precip. 10% 0% 0% 0%
Cloud Cover 43% 75% 100% 73%
Conditions Partly Cloudy Mostly Cloudy Overcast Mostly Cloudy
Sunrise & Sunset
5:28 AM
9:26 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.00], Average RMSE [3.40]
The National Weather Service forecast quality is poor. MaxT RMSE [5.49], Average RMSE [4.58] : Use NWS
Source: BestForecast at 2:39 PM MDT on June 18, 2013
Descriptive Forecast
Monday
cloudy Overcast. High of 82F. Winds from the SW at 5 to 15 mph.
Monday Night
nt_mostlycloudy Overcast. Low of 55F. Winds from the SW at 10 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 39 73 | 46 77 | 50 63 | 48
Wind 7 mph SW 11 mph SW 13 mph WSW 12 mph SW
Humidity 58% 37% 39% 58%
Chance of Precip. 0% 0% 10% 0%
Cloud Cover 99% 100% 100% 95%
Conditions Overcast Overcast Overcast Overcast
Sunrise & Sunset
5:28 AM
9:26 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.26], Average RMSE [3.37]
The National Weather Service forecast quality is poor. MaxT RMSE [6.23], Average RMSE [5.31] : Use NWS
Source: BestForecast at 2:39 PM MDT on June 18, 2013
Descriptive Forecast
Tuesday
partlycloudy Clear. High of 75F. Breezy. Winds from the WSW at 15 to 25 mph.
Tuesday Night
nt_clear Clear. Low of 57F. Winds from the WSW at 5 to 20 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 55 | 48 73 | 50 73 | 48 59 | 46
Wind 11 mph SSW 23 mph WSW 19 mph West 9 mph SW
Humidity 73% 41% 39% 65%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 99% 12% 0% 0%
Conditions Overcast Clear Clear Clear
Sunrise & Sunset
5:29 AM
9:26 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [6.62], Average RMSE [4.17]
Source: BestForecast at 2:39 PM MDT on June 18, 2013
Descriptive Forecast
Wednesday
clear Clear. High of 91F. Winds from the WSW at 10 to 15 mph.
Wednesday Night
nt_clear Clear. Low of 57F. Winds from the West at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 57 | 46 75 | 48 81 | 50 64 | 48
Wind 10 mph SW 10 mph West 10 mph West 5 mph West
Humidity 67% 37% 33% 53%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 0% 1% 1%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:29 AM
9:26 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.74], Average RMSE [3.76]
Source: BestForecast at 2:39 PM MDT on June 18, 2013
Descriptive Forecast
Thursday
clear Clear. High of 90F. Winds from the West at 5 to 10 mph.
Thursday Night
nt_partlycloudy Partly cloudy with a chance of a thunderstorm. Low of 57F. Winds less than 5 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 57 | 46 75 | 50 79 | 55 66 | 57
Wind 6 mph WSW 7 mph West 7 mph WNW 2 mph West
Humidity 67% 41% 44% 71%
Chance of Precip. 0% 0% 20% 20%
Cloud Cover 1% 5% 9% 32%
Conditions Clear Clear Chance of a Thunderstorm Chance of a Thunderstorm
Sunrise & Sunset
5:29 AM
9:26 PM
Source: BestForecast at 2:39 PM MDT on June 18, 2013
Descriptive Forecast
Friday
partlycloudy Partly cloudy with a chance of a thunderstorm. High of 88F. Winds less than 5 mph. Chance of rain 20%.
Friday Night
nt_partlycloudy Partly cloudy with a chance of a thunderstorm. Low of 55F. Winds less than 5 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 57 | 57 75 | 55 77 | 54 61 | 52
Wind 4 mph West 5 mph West 6 mph WNW 2 mph WSW
Humidity 100% 50% 42% 72%
Chance of Precip. 20% 20% 20% 20%
Cloud Cover 55% 49% 43% 40%
Conditions Chance of a Thunderstorm Chance of a Thunderstorm Chance of a Thunderstorm Chance of a Thunderstorm
Sunrise & Sunset
Sun does not rise
Source: BestForecast at 2:39 PM MDT on June 18, 2013
Descriptive Forecast
Saturday
clear Clear. High of 86F. Winds less than 5 mph.
Saturday Night
nt_clear Clear. Low of 55F. Winds from the NNE at 5 to 10 mph shifting to the SE after midnight.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 55 | 50 75 | 52 79 | 52 75 | 55
Wind 4 mph WSW 5 mph West 3 mph WNW 6 mph SE
Humidity 81% 41% 39% 50%
Chance of Precip. 20% 10% 0% 0%
Cloud Cover 36% % % %
Conditions Chance of Rain Clear Clear Clear
Sunrise & Sunset
Sun does not rise
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
Weather History & Almanac
June 18, 2013 Max Temp Min Temp
Normal (KGTF) 74 °F 47 °F
Record (KGTF) 93 °F (2003) 34 °F (1902)
Yesterday 80 °F 44 °F
Yesterday's Heating Degree Days: 3
Weather History for Great Falls, MT
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
Astronomy
Jun. 18, 2013 Rise Set
Actual Time 5:27 AM MDT 9:25 PM MDT
Civil Twilight 4:46 AM MDT 10:06 PM MDT
Nautical Twilight 3:50 AM MDT 11:02 PM MDT
Astronomical Twilight 2:21 AM MDT 12:31 AM MDT
Moon 3:58 PM MDT (6/18) 1:56 AM MDT (6/18)
Length Of Visible Light 17h 19m
Length of Day
15h 58m
Tomorrow will be 0m 10s longer.
Waxing Gibbous, 74% of the Moon is Illuminated
Today
Waxing Gibbous
Jun 23
Full
Jun 29
Last Quarter
Jul 8
New
Jul 15
First Quarter
Visit Astronomy
Today's Extremes
State Highs State Lows
88 °F
Havre
88 °F
Dillon
88 °F
Billings
88 °F
Miles City
86 °F
Helena
32 °F
West Yellowstone
44 °F
Dillon
45 °F
Butte
48 °F
Glendive
48 °F
Sidney-Richland
Record Extremes
Snow Depth
Station Depth Elevation
Stringer Creek 0 in 6550 ft
Spur Park 0 in 8100 ft
Pickfoot Creek 0 in 6650 ft
Wood Creek 0 in 5960 ft
Copper Camp 0 in 6950 ft
Snow Depth Reports — Snow Depth Map
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Aviation
City Temp. Conditions Updated
Great Falls 80 °F Clear 5:53 PM MDT
Malmstrom AFB 81 °F Thunderstorm 5:20 PM MDT
Helena 77 °F Clear 5:53 PM MDT
Lewistown 77 °F Clear 5:54 PM MDT
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Flight To ETA Status
AMF7826
Kalispell, MT 		KGTF 06:49PM On Time
SKW6438
Denver, CO 		KGTF 07:02PM On Time
FDX542
Grand Forks, ND 		KGTF 07:25PM On Time
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Type Condition
Flight Rule: VFR (KGTF)
Wind Speed: 6.0 kts.
Wind Dir: 225° (SW)
Ceiling: Unlimited

METAR KGTF 182353Z 10006KT 10SM CLR 27/12 A2972 RMK AO2 SLP037 T02670122 10289 20250 56016

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Nearby Events
Event Date Forecast
No events within 10 mi of location. View all events.
Event data courtesy eviesays.com
Sports
Event Date Forecast
Royals vs. Indians 7:05 PM EDT on June 18, 2013 Clear, 65 °F
Dodgers vs. Yankees 7:05 PM EDT on June 18, 2013 Thunderstorm, 72 °F
Event Date Forecast
Almería vs. Girona 8:00 PM CEST on June 19, 2013 Scattered Clouds, High 82° F/ 28° C
Houston vs. Montreal 8:00 PM EDT on June 19, 2013 Forecast not available.
Event Date Forecast
Toyota/Save Mart 350 12:19 PM PDT on June 23, 2013 Clear, 70 °F
Quaker State 400 7:45 PM EDT on June 29, 2013 Average High 84° F/ 28° C
Event Date Forecast
Travelers Championship 8:30 AM EDT on June 20, 2013 Clear, 58 °F
Travelers Championship 8:30 AM EDT on June 21, 2013 Clear, 58 °F
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Great Falls Weather Stations
Station Location Temp. Heat Index Dew Point Humidity Wind Precipitation Elevation Updated Type Website
Spicer's, Great Falls, MT 83.3 °F 82 °F 53 °F 35% SW  at  5.0 mph 0.00 in / hr 3218 ft 6:28 PM MDT Rapid Fire
APRSWXNET Great Falls MT , Black Eagle, MT 83 °F 81 °F 47 °F 29% ESE  at  7 mph 0.00 in / hr 3354 ft 6:08 PM MDT MADIS
Countryside Village, Great Falls, MT 79.2 °F 79 °F 53 °F 40% East  at  9.4 mph 0.00 in / hr 3604 ft 6:28 PM MDT Rapid Fire
Windy Acres, Great Falls, MT 79.9 °F 79 °F 36 °F 21% NNW  at  0.0 mph 0.00 in / hr 3510 ft 6:27 PM MDT Rapid Fire  
MesoWest Dahlman , Dutton, MT 79 °F 80 °F 61 °F 54% NNE  at  2 mph 0.00 in / hr 3805 ft 5:30 PM MDT MADIS
TetonCD~Dahlman, Power, MT 74.5 °F 77 °F 62 °F 65% NW  at  0.0 mph 0.00 in / hr 3805 ft 6:28 PM MDT Rapid Fire  
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Severe Thunderstorm Watch
Mobile & Email Alerts Statement as of 6:03 PM MDT on June 18, 2013

Severe Thunderstorm Watch 326 remains in effect until 1000 PM MDT
for the following locations


Mt
. Montana counties included are

Broadwater Cascade Chouteau
Deer Lodge Flathead Glacier
Granite Hill Jefferson
Judith Basin Lake Lewis and Clark
Liberty Meagher Missoula
Pondera Powell Ravalli
Teton Toole



Special Statement
Mobile & Email Alerts Statement as of 6:13 PM MDT on June 18, 2013

... Significant weather advisory for southeastern Teton... extreme
western Chouteau and northern Cascade counties until 700 PM MDT...

At 611 PM MDT... National Weather Service Doppler radar was tracking a
strong thunderstorm 12 miles northeast of Cascade... moving north at
25 mph.

Wind gusts up to 40 mph are expected with this storm... along with
heavy rain and frequent dangerous lightning.

Locations near the path of this storm include... Fort Shaw... power...
Ulm... Sun Prairie... Sun River and Vaughn.

If threatening weather approaches your area... take shelter in a
sturdy building.

A Severe Thunderstorm Watch remains in effect until 1000 PM MDT
Tuesday evening for western Montana.

Lat... Lon 4770 11191 4776 11131 4731 11133 4725 11175
time... Mot... loc 0013z 174deg 21kt 4739 11150


Mlv


540 PM MDT Tue Jun 18 2013

... Significant weather advisory for central Cascade County until 630
PM MDT...

At 534 PM MDT... National Weather Service Doppler radar was tracking a
strong thunderstorm 18 miles east of Cascade... moving north at 25
mph.

Wind gusts up to 40 mph... very heavy rain and small hail are
expected with this storm.

Locations near the path of this storm include... Great Falls... Black
Eagle... Stockett... Centerville... Sand Coulee... Tracy... Ulm and
malmstrom AFB.

If threatening weather approaches your area... take shelter in a
sturdy building.

A Severe Thunderstorm Watch remains in effect until 1000 PM MDT
Tuesday evening for western Montana.

Lat... Lon 4751 11165 4756 11115 4712 11112 4708 11146
time... Mot... loc 2339z 173deg 22kt 4723 11134


Mlv