/Issued 5:38 PM CDT, Sunday, July 29, 2018/
18z NAM 7.29.2018
Radar loop ending at 6:40 PM CDT, Sunday, July 29, 2018. Still seeing a few showers and thunderstorms drifting S/SE through parts of the Northland early this evening. This activity should dissipate before 10 PM.
Goes-16 visible satellite loop from Sunday, July 29, 2018 (Time: ~11 AM to ~5:40 PM)
Sunshine this morning, followed by bubbling cumulus clouds and spotty storms this afternoon, very similar to Saturday’s weather.
Temperature departure map for the week of July 22, 2018 — Below normal temps last week in most of the Northland, except in extreme northeast Minnesota (yellow and orange colors on map) where above normal temperatures were observed. Note: Greatest departures from average show up in blue and purple colors on map.
Precipitation departure map for the week of July 22, 2018 — All of northeast Minnesota and northwest Wisconsin had below normal precipitation totals last week.
Temperature and Precipitation report for Duluth, Minnesota
July 22 through July 28, 2018
High Temperatures/Departure from Normal
7/22: 73 F/-4 degrees below normal
7/23: 81 F/+4 degrees above normal
7/24: 81 F/+4 degrees above normal
7/25: 76 F/-1 degree below normal
7/26: 70 F/-7 degrees below normal
7/27: 76 F/-1 degree below normal
7/28: 80 F/+3 degrees above normal
Low Temperatures/Departure from Normal
7/22: 56 F/Normal
7/23: 50 F/-6 degrees below normal
7/24: 60 F/+4 degrees above normal
7/25: 56 F/Normal
7/26: 55 F/-1 degree below normal
7/27: 49 F/-7 degrees below normal
7/28: 54 F/-2 degrees below normal
Note: Average Temperature for the week of July 22: 65.5 degrees (-0.9 degrees below normal) Source: https://www.dnr.state.mn.us
Total Precipitation: 0.03 inches
Normal: 0.76 inches
Departure: -0.73 inches below normal
State Average for Minnesota for the week of July 22, 2018
Temperature: 67.2 degrees
Departure: -2.9 degrees below normal
Precipitation: 0.22 inches
Departure: -0.58 inches below normal
Not a whole lot of change in the weather pattern today as the upper Midwest remains in a NW flow aloft as an upper level low continues to churn over eastern Canada. Chilly temps aloft combined with warmer air near the surface made the atmosphere unstable once again today which led to the formation of isolated to scattered showers and thunderstorms over portions of the Northland. Heavy downpours and some cloud to ground lightning were common with the storms today with one report of small hail (Pea sized) at the Duluth Airport just before 4 PM today. Similar to Saturday, the storms today didn’t last too long with little support to sustain the updrafts, winds aloft remain very weak, so the thunderstorms develop, spit out some lightning, heavy rain and perhaps some hail balls, then the storm weakens within about 20-30 minutes.
Spotty showers and thunderstorms will dissipate this evening followed by partly to mostly cloudy skies across the Northland with lows tonight in the 50s to lower 60s but 40s are likely once again in the typical cool spots.
Partly to mostly cloudy skies for Monday with highs in the mid 70s to low 80s. Still can’t rule out a few spotty afternoon showers or thunderstorms but coverage looks less tomorrow compared to what we saw the last 2 days.
Tuesday looks nice with highs in the upper 70s to middle 80s! A mix of sun/clouds is expected. A cold front approaches from the north by Tuesday evening, and we could see a few showers or thunderstorms develop Tuesday night as that front pushes south across the Northland.
Some rain and showers could linger into Wednesday as a much cooler airmass advects into our area on gusty N/NE winds! 925mb temperatures are forecast to bottom out to between +4 to +9C which translates to Wednesday afternoon temperatures only in the 50s to lower 60s, and it might even be cooler than that in northeast Minnesota, will just have to wait and see.
Temps are expected to moderate once again late this week into next weekend, could have highs near or above 80 degrees, and it could also turn a little muggy at times, so I guess enjoy the midweek cool down if you don’t like warm/humid weather during the summer.
Duluth, Minnesota Climate Normals for July 30
Sunrise Monday: 5:46 AM CDT
Sunset Monday: 8:43 PM CDT