The Colorado Low formed this morning in Colorado, on the east side of the Rocky Mountains. At 1330z this morning, it was depicted to be 975MB deep, which is very impressive. See below for that analysis by he Weather Prediction Center:
Below is the FORECASTED position of the Low, fronts and precipitation axis for Thursday morning by the Weather Prediction Center. Note the 988MB Low and main precipitation axis extending into southeast Manitoba:
Blizzard warnings have been extended into the Red River Valley (seen in red below), however only special weather statements and snowfall warnings are in effect in Manitoba.
URGENT - WINTER WEATHER MESSAGE National Weather Service Grand Forks ND 901 AM CDT Wed Mar 13 2019 NDZ028>030-038-150600- /O.CON.KFGF.BZ.W.0005.190314T0000Z-190315T0600Z/ Griggs-Steele-Traill-Barnes- Including the cities of Cooperstown, Finley, Hope, Mayville, Hillsboro, Hatton, Portland, and Valley City 901 AM CDT Wed Mar 13 2019 ...BLIZZARD WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 1 AM CDT FRIDAY... * WHAT...Blizzard conditions expected. Total snow accumulations of 6 to 12 inches, with higher amounts up 18 inches possible. Winds gusting as high as 55 mph. * WHERE...Barnes, Traill, Griggs and Steele Counties. * WHEN...From 7 PM this evening to 1 AM CDT Friday. * ADDITIONAL DETAILS...Travel will be dangerous to impossible. Widespread blowing snow will significantly reduce visibility. The hazardous conditions will impact the morning and evening commute. Strong winds could cause extensive damage to trees and power lines.