/Issued 3:25 PM CDT, Friday, June 22, 2018/
12z HRW NMMB model (6/22/2018)
12z Euro model (6/22/2018)
500mb forecast for Tuesday, June 26, 2018
12z GEFS model (6/22/2018)
500mb forecast valid June 22 through July 8, 2018.
An upper level ridge of high pressure (dome of heat) retrogrades as it starts out covering the eastern U.S., then pushes west into the central U.S. and Rockies by the end of the long range period — This pattern should be a hot one, but it remains to be seen if any of that heat would make it into the Northland, or will we deal with brief surges of heat along with possible thunderstorm clusters which could develop and track on the north/northeast side of that huge ridge to our south? Stay tuned.
An upper level low was moving into the Ohio Valley region while an upper level trough was over the northern Plains. A cold front was situated north of the Minnesota-Ontario border this afternoon. Skies across the Northland were partly to mostly cloudy today with a few showers and thunderstorms this afternoon over far northern Minnesota. Highs today ranged from the mid 70s to mid 80s with Bigfork and International Falls the warm spots at 3 PM, both at 84 degrees.
A few showers and isolated thunderstorms will continue tonight in far northern Minnesota, generally along and north of a line from near Bigfork to Silver Bay. The rest of the Northland will stay dry tonight. Will have partly to mostly cloudy skies tonight with patchy fog possible late. Lows ranging from around 50 degrees to the middle 60s (warmest temps in far northern Minnesota) A few spots in far northern Wisconsin could dip into the 40s.
Saturday’s weather looks quite similar to what we saw Friday — Partly to mostly cloudy skies with isolated to scattered coverage showers and a few thunderstorms. Highs Saturday in the mid 70s to low 80s.
A cold front will drop south out of Ontario Province and will pass through the Northland Saturday afternoon/evening. Some moisture and instability will be present near and south of this front resulting in the development of a few showers and thunderstorms tonight and Saturday.
A strong northeast wind develops near Lake Superior late Saturday night and continues through Sunday and possibly even into Monday, wind gusts from 20 to 30 mph on the way late this weekend. High temps near Lake Superior are expected to be in the upper 40s to middle 50s for Sunday and Monday, milder temps inland with highs in the 60s and 70s for Sunday and Monday.
Rain chances return to the Northland next Monday and Tuesday as a slow moving area of low pressure approaches from the southwest. Areas of heavier rainfall could accompany this system, and a few thunderstorms will also be possible early next week.
Forecast for Duluth and Superior
.Tonight… Partly to mostly cloudy. Low 50 to 55. Wind east at 4 to 13 mph.
.Saturday… Partly to mostly cloudy. Isolated showers possible during the afternoon. High 75 to 80 but turning cooler near Lake Superior later in the day. Wind east at 5 to 15 mph.
.Sunday… Windy and cooler. Partly to mostly cloudy. High 53 to 58. Wind east at 15 to 30 mph.
Normal Temperatures for June 23
Sunrise Saturday: 5:15 AM CDT
Sunset Saturday: 9:07 PM CDT