POTENTIAL IMPACTS: SIGNIFICANT SNOW FOR RRV POSSIBLE
NAM forecast model (above) depicts a significant shortwave trough ejecting (once more) into the North American continent. This will be our next weather maker mid-week. Another potent winter storm is expected to impact the Northern Plains and Manitoba. To which extent the main axis of precipitation will expand north is still uncertain.
"Wednesday-Thursday night: Strong upper low still projected to move towards the Northern Plains out Colorado, though trend has been towards slowing this down and shifting it a little further south. Consensus of models favors deformation axis extending up into our CWA with current track, with high QPF across our south Wed night into Thursday. Slower timing may favor majority of precip to occur after air mass becomes colder decreasing potential for rain or freezing rain, and increasing potential for heavy snow. In addition, strong wind signal as LLJ on NW side of upper low supports wind gusts 45 to 60 mph over our CWA (strongest on ND side of Red River Valley). Older snow pack will likely be crusted over, however if these strong winds align with snowfall then whiteout conditions would be possible. At this range further track changes would shift impacts away or further into our CWA, and impacts will be highly dependent on track/timing." -NWS Grand Forks, ND
Below are the GFS (American) model trends. This depicts that this model is "trending" with southern extent of snowfall. It is possible that Manitoba will be missed completely by this storm system, which will be positive for spring flooding.
Below is the European model depicted the possible location of the Low pressure system on Thursday morning. Model depicts a rapidly deepening Low pressure, which is classic of intense winter storms/blizzards for the Northern Plains. A slight shift north will mean some heavy snow for parts of southern Manitoba.
Below is the NAM model depicting rapid cyclogenesis and intensification of the storm system on Wednesday.