Super Sunrise With Chinook Arch Cloud Formation

Posted at 6:45 PM, Dec 13, 2018
and last updated 2018-12-13 20:51:47-05

What a sky on Thursday!  A unique cloud formation called a “Chinook Arch” developed off the Continental Divide and made for a beautiful sunrise and an interesting sky all day long.  Thanks to everyone that shared a picture.  That cloud should break up Thursday night, which is good because the Geminid Meteor Shower peaks tonight.  Check it out.  Friday will be a sunnier day with highs in the 40s and 50s.  Strong wind will once again be found east of the mountains, along the Hi-Line, over Montana’s prairies, and in the mountains.  Basically everyone will have wind with the exception of the western valleys.  Temperatures in north-central Montana could be as high as the mid 50s.  Late Friday night a cold front will move through the state with snow showers near the Divide.  Most snow showers will be finished by Saturday morning.  Most of the rest of the day will be mostly sunny and windy, highs will be in the 30s and 40s.  Sunday will be a mostly sunny to partly cloudy day, still windy and mild across north central Montana, mild with less wind in the valleys.  Highs will be in the 40s to around 50, 30s in the mountains.  With a weather pattern favoring the Pacific, temperatures will remain mild and precipitation will be very limited for nearly the next week.  Tuesday night into Wednesday a storm will come in from the Pacific, but most of the moisture will fall along and west of the Continental Divide.  Toward Christmas Eve a pattern may change to allow for a chance of snow and a White Christmas.  Keep your fingers crossed…

Curtis Grevenitz