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Monday, April 11, 2022

Weekly weather discussion 11 April 2022

 

(Climate) We are working into the middle of April and we should be starting to see increases in precipitation across the state but it just isn’t quite working out that way. A few areas of the state did get some moisture this week and the biggest winners were generally on a line from southwestern to northeastern SD where a few tenths to over a half an inch fell. Spotty precipitation was also found over northwestern and southeastern SD but only a few hundredths to a tenth or two was recorded in those areas. Temperatures largely hovered around seasonal averages.

There was no change in the US Drought Monitor last week. (Darren Clabo)

 

(Weather)

Forecast Highlights:

A massive spring blizzard will impact the northern Great Plains this week but unfortunately the beneficial moisture from it will be mostly over ND leaving SD mostly dry but pretty breezy. Temperatures today will range from the 40s over northern SD to the low 60s over southern SD. Winds north of I-90 will be light and variable but south of the interstate, southerly winds with gusts to 25+ mph are possible. Minimum RH will range from 35% north to 15% south. A strong low pressure and cold front will race across the state tomorrow (this is the low associated with the blizzard expected over ND). This will lead to southeasterly winds in the morning becoming westerly to northwesterly by the afternoon. Gusts could exceed 55 mph over central and western SD. Temperatures will range greatly will the cold front: eastern SD will get into the 60s before the front passes while western SD likely won’t get out of the 30s and 40s. Look for temperature drops and winds shifting to the NW after frontal passage. Heavy snow will be possible over far northwestern and extreme northern SD while the rest of the state sees widely scattered rain/snow showers. Wednesday through Friday will bring breezy northwesterly winds with gusts to 35+ mph. Highs will be in the 20/30s over western SD and 30s/40s over eastern SD each day. A few snow showers will linger over northern SD on both Wednesday and Thursday. Temperatures will warm this weekend but how much they will warm remains a question: another low pressure looks to move through the state so we’ll have to monitor the changes due to this new system.    

 

Potential for critical conditions:

Critical fire weather conditions are in place over southcentral SD today. There is potential for more critical fire conditions over the southern half of the state tomorrow as the front pushes through. Be sure to look at your local forecast to determine your risk. Elevated fire danger is also possible on Sunday. (Darren Clabo)

 

(Fire/Fuels) The Wabash Springs Fire that occurred on April 7th burned 111 acres. The fire was driven by strong winds in an open pine stand. The grass burned very well but was checked up by any area that had been mowed previously and had some green component to it. No torching of trees was observed. Most of the Black Hills has seen a little moisture or will have potential for more in the next few days. With the cooler temps and chances of precipitation I do not foresee any fire issues this week. (John Haskvitz)

  

*** NOTE: Next update on Tuesday, April 19 ***