4/21/15: Remaining Cool

The low pressure system that brought the rain into the area on Saturday Night and Sunday has only moved in just north of Lake Superior.  Therefore the wraparound clouds and brisk wind is still impacting eastern North Dakota and Minnesota.

1PM Surface Analysis
1 PM Surface Analysis

The clouds are moving southeasterly and eventually all of North Dakota and northwestern Minnesota will clear but the southern Red River Valley the process will take much of the day.

1:45 PM Visible Satellite image
1:45 PM Visible Satellite image

Where the clouds are the thickest, the temperatures are still barely above freezing, but some late afternoon sun will hopefully boost temperatures to around 40 in those locations with the sunny parts of the region recording highs in the 40s to around 50°.

2 PM Temperatures
2 PM Temperatures

 

Temperatures this morning dropped into the upper 10s to the middle 20s in locations that cleared and with most of North Dakota and northwestern Minnesota expected to be clear tomorrow morning (Wednesday), similar low temperatures are projected.

April 21, 2015 Minimums
April 21, 2015 Minimums

Projected Low temperatures tonight from the WRF-NAM 4 km computer guidance strongly suggests lows in the middle 20s tonight and I personally would not be surprised by some scattered upper 10s lows similar to this morning.  Thursday morning also looks about as cold as what is expected on Wednesday morning.

Wednesday AM minimums
Wednesday AM minimums

Temperatures should recover to near or in the 50s tomorrow, in the 50s most days into the weekend, so continued below average, but warmer than the past couple of days.

It still appears a warm up is coming as we approach May 1 next week as a ridge of high pressure and the corresponding warmer temperatures

Friday, May 1, 2015, 7 AM 500 mb
Friday, May 1, 2015, 7 AM 500 mb

 

Minimal precipitation is foreseen in the next week with the next threat coming on Friday.

Daryl Ritchison