The Persistent Perils of Predicting the Future

Skies stay sunny most of this week with a return to the 80s. T-storms are most likely Friday; again Sunday as a hot front draws near. Check the blog for more details. -Todd Nelson

September 13, 2022 at 2:30AM
Cuyuna Country State Recreation Area (Park Staff/The Minnesota Star Tribune)

Fall Color Update

It's that time of the year again for fall colors and the MN DNR has their fall color finder up and running. Much of the state is still color free, but there are a few colors popping up here and there.

Fall Color Update (MN DNR/The Minnesota Star Tribune)

Average Fall Color

The MN DNR has put together a nice graphic that shows typical dates for peak fall color. The northern par of the state starts to peak during the 2nd half of September into early October. Meanwhile, folks in the central part of the state and into the metro typically don't see peak color until the end of September into the middle part of October. It won't be long now - enjoy!

Average Fall Color Dates (MN DNR/The Minnesota Star Tribune)

Average First Frost For MSP

Here's the 30 year average for the first frost in Minneapolis, which lands on October 13th. Last year (2021) the first frost was on October 23rd. If you look at the full MSP record, which dates back to 1873, the latest frost was November 18th back in 2016, while the earliest frost was September 3rd back in 1974.

Average First Frost (32F) For Minneapolis (NOAA NWS/The Minnesota Star Tribune)

First Measurable Snow at MSP

Here's the average first measurable snowfall (0.01") at MSP over the last 30 years, which lands on November 6th. Last year, MSP had its first measurable snow on November 13th. The last was on December 3rd back in 1928, while the earliest was September 24th in 1985.

First Measurable Snow at MSP (NOAA NWS/The Minnesota Star Tribune)

Another Dry Stretch. Rain Chances Late Week

Here's the weather outlook from AM Tuesday to AM Monday. Weather conditions through midweek will still remain rather dry & mild for mid September. However, it turns a little unsettled as we approach the end of the week and weekend ahead with shower and thunderstorms chances. Areas of heavier rainfall can't be ruled out near the international border.

Weather Outlook From AM Tuesday to AM Monday (Tropical Tidbits/The Minnesota Star Tribune)

Extended Precipitation Outlook

After dry weather through the first half of the week, things turn more unsettled late week and into the weekend ahead. Areas of heavier rainfall will be possible across the northern half of the state, where some 1" to 2" amounts can't be ruled out.

Extended Precipitation Outlook (WeatherBell & NOAA's WPC/The Minnesota Star Tribune)

Minnesota Drought Update

Here's the latest drought update across Minnesota. As of September 6th, we still have a sliver of moderate and severe drought conditions stretching from the Twin Cities Metro to the Minnesota River Valley.

MN Drought Update (US Drought Monitor/The Minnesota Star Tribune)

Weather Outlook on Tuesday

The weather outlook on Tuesday shows another dry and mild day in place across the region. Temps will generally warm into the 70s and 80s, which will be nearly +5F to +10F above average

Weather Outlook Tuesday (Praedictix/The Minnesota Star Tribune)
Highs From Average on Tuesday (Praedictix/The Minnesota Star Tribune)

Weather Outlook Tuesday

The weather outlook for Minneapolis on Tuesday shows dry and mild weather in place for much of the day. Temps will start a bit on the cooler side, but readings will warm into the upper lower 80s by the afternoon, which will be above average for mid September.

Tuesday Weather Outlook For Minneapolis (Praedictix/The Minnesota Star Tribune)

Turning A Little Sticky Late Week

Dewpoints will be very comfortable through the first half of next week, but notice the gradual increase over the next several days. Later this week, it'll be a bit warmer and stickier, but it won't be too bad.

Daily Max Dewpoint Forecast For Minneapolis (Praedictix/The Minnesota Star Tribune)

Meteograms for Minneapolis

The hourly forecast for Minneapolis on Tuesday shows temps starting in the low/mid 50s in the morning with highs topping out in the lower 80s in the afternoon. Again, it'll be a dry and comfortable day with a southwesterly breeze.

Hourly Temps & Sky Conditions For Minneapolis on Tuesday (Praedictix/The Minnesota Star Tribune)
Hourly Wind Gusts & Direction For Minneapolis on Tuesday (Praedictix/The Minnesota Star Tribune)

Extended Temperature Outlook For Minneapolis

The extended temperature outlook for Minneapolis shows readings running above average by nearly +5F to +10F over the next several days with a slight increase in humidity values as we approach the weekend.

5 Day Temperature Forecast For Minneapolis (Praedictix/The Minnesota Star Tribune)

Extended Weather Outlook For Minneapolis

The extended weather outlook over the next 7 days shows dry and comfortable conditions in place through midweek. Temps will once again warm into the 80s, which will be above average for mid September. Rain chances will increase later this week and into the weekend with locally heavy rainfall possible across the northern half of the state. Stay tuned.

7 Day Weather Forecast For Minneapolis (Praedictix/The Minnesota Star Tribune)

Extended Temperature Outlook For Minneapolis

According to the NBM & ECMWF extended temperature outlook shows above average temps through the upcoming weekend. One model shows a general cooling trend into next week, but the other shows a modest warming trend. Stay tuned...

NBM Extended Temperature Outlook For Minneapolis (WeatherBell/The Minnesota Star Tribune)
ECMWF Extended Temperature Outlook For Minneapolis (WeatherBell/The Minnesota Star Tribune)

8 to 14 Day Temperature Outlook

According to NOAA's Climate Prediction Center, the 8 to 14 day temperature outlook shows above average temps continuing across much of the nation, especially across the eastern two-thirds of the nation.

8 to 14 Day Temperature Outlook (NOAA CPC/The Minnesota Star Tribune)

8 to 14 Day Precipitation Outlook

According to NOAA's Climate Prediction Center, the 8 to 14 Day precipitation outlook shows dry weather in place in the Western US and especially from the Northwest to the High Plains.

8 to 14 Day Precipitation Outlook (NOAA CPC/The Minnesota Star Tribune)

Activity in the Atlantic

As of Monday afternoon, there were no named storms in the Atlantic Basin. However, there are 2 areas of interest that have a low probability of formation over the next 5 days.

5 Day Tropical Outlook (NOAA NHC/The Minnesota Star Tribune)

The Persistent Perils of Predicting the Future
By Paul Douglas

My fantasy football team is already a hot mess. When people complain about weather forecasts I ask how their fantasy team is doing? They usually laugh and change the subject.

Football rankings (ie. weather models) arrive after every NFL game with the latest roster and outlook. Team rosters change over time (sound familiar)? Good luck predicting who will get injured weeks or months from now, which obviously impacts a team's ability to win. Long range forecasts are riddled with uncertainty. The future is, to a large degree, unknowable.

Tell that to residents of southeast Wisconsin, where a temporarily stalled storm just squeezed out 5-10" rain near Milwaukee and Racine. 3 month's worth in 2 day, a potentially record-setting September rain.

Skies stay sunny most of this week with a return to the 80s. T-storms are most likely Friday; again Sunday as a hot front draws near.

Finally, can anyone tell me when interest rates will peak? Supply chain bugs? This virus? Looking backward in time is easier.

Extended Forecast

TUESDAY: Warm and sunny. Winds: SW 5-10. High: 81.

TUESDAY NIGHT: Partly cloudy & quiet. Winds: SSW 5. Low: 57.

WEDNESDAY: Plenty of sunshine. Winds: SE 8-13. High: 82.

THURSDAY: Some sun, T-storms up north. Winds: S 10-20. Wake-up: 65. High: 83.

FRIDAY: Better chance of T-storms. Winds: S 10-20. Wake-up: 69. High: 81.

SATURDAY: Partly sunny, feels like early August. Winds: S 5-10. Wake-up: 67. High: 85.

SUNDAY: Sticky sun, few T-storms around. Winds: S 15-30. Wake-up: 68. High: 83.

MONDAY: Hello summer! Hazy sun, hot. Winds: SW 10-20. Wake-up: 73. High: 88.

This Day in Weather History

September 13th

1994: Lightning strikes and injures a 35 year old man in Stearns County as he opens the door of his truck. Witnesses said he was thrown 10 feet when the lightning bolt struck him.

1834: Smoke fills the sky at Ft. Snelling due to fires burning nearby.

Average High/Low for Minneapolis

September 13th

Average High: 74F (Record: 95F set in 1939)

Average Low: 56F (Record: 33F set in 1890)

Record Rainfall: 1.29" set in 1921

Record Snowfall: None

Twin Cities Almanac For September 13th (Praedictix/The Minnesota Star Tribune)

Sunrise/Sunset Times for Minneapolis

September 13th

Sunrise: 6:47am

Sunset: 7:31pm

Hours of Daylight: ~12 hours & 38 minutes

Daylight LOST since yesterday: ~ 3 minutes & 5 seconds

Daylight LOST since Winter Solstice (December 21st): ~ 2 hour & 59 minutes

Moon Phase for September 13th at Midnight

1.9 Days After Full "Harvest" Moon

"4:59 a.m. CDT - Traditionally, this designation goes to the full moon that occurs closest to the autumnal (fall) equinox, which falls this year on Sept. 22. This year's Harvest Moon comes unusually early. At the peak of the harvest, farmers can work into the night by the light of this moon. Usually, the moon rises an average of 50 minutes later each night, but for the few nights around the Harvest Moon, the moon seems to rise at nearly the same time each night: just 25 to 30 minutes later across the U.S., and only 10 to 20 minutes later for much of Canada and Europe. Corn, pumpkins, squash, beans, and wild rice — indigenous staples in North America — are now ready for gathering."

Moon Phase For September 13th at Midnight (The Minnesota Star Tribune)

National High Temps Tuesday

The weather outlook on Tuesday shows warmer than average temps returning the the Midwest with highs approaching 90F in Denver. Meanwhile, cooler than average temps will be found in the Western & Southwestern US.

National Weather Outlook For Tuesday (Praedictix/The Minnesota Star Tribune)
National Highs From Average on Tuesday (Praedictix/The Minnesota Star Tribune)

National Weather Outlook Tuesday

Areas of showers and storms will be possible across the Intermountain-West. There will also be areas of storms in the Northeast and across Florida. Much of the rest of the nation will be dry.

National Weather Outlook For Tuesday (Praedictix/The Minnesota Star Tribune)

National Weather Outlook

Here's the weather outlook through Wednesday, which shows unsettled weather across the Intermountain-West as a storm system slowly shifts east. This will eventually bring areas of rain and thunder to the Midwest later in the week. Meanwhile, a storm system will move into the Northeast and will keep rain chances in place through early Wednesday. There will be a stalled front in Florida, which will keep areas of heavy rains there as well.

Weather Outlook Through Wednesday (NOAA WPC/The Minnesota Star Tribune)

Extended Precipitation Outlook

According to NOAA's Weather Prediction Center, areas of heavier precipitation will continue across Florida with localized flooding possible. There will also be decent rainfall amounts through the Intermountain-West and also closer to Lake Superior.

Extended Precipitation Outlook (NOAA WPC/The Minnesota Star Tribune)

Climate Stories

(NOAA/The Minnesota Star Tribune)

"U.N. seeks funds for African nations as cost of climate change rises"

"From drought to floods and sea level rise, the cost of damage caused by climate change will only get higher as the world warms, sparking concerns from both top officials and activists about how to pay for it. "Loss and damage from the climate crisis is not a future event. It is happening now, all around us," said United Nations Secretary-General Antonio Guterres on a visit to Pakistan, which recently suffered from devastating floods that displaced hundreds of thousands of people and left over a thousand dead."

"How Drought and War Are Really Affecting the Global Food Supply"

"THE IMAGES ARE apocalyptic. Pleasure boats marooned in dried-up European rivers. Norwegian reservoirs too low to drive hydropower. China's largest inland lake turned to a prairie as its water evaporates away. And so are the warnings. The National Drought Group of the UK predicts that yields of some vegetable crops—carrots, onion, and potatoes—could be cut in half. The European Drought Observatory says that almost half of the bloc is drier than it has been since the Renaissance. China's agricultural ministry has urged farmers to undertake emergency switches to different crops following a historic heatwave."

"Drinking water is becoming more scarce. Is desalination the solution?"

"Clean freshwater is critical for sustaining human life. However, 1.1 billion people lack access to it worldwide. Desalination represents an increasingly popular way of addressing this. Desalination is the process of extracting salt from saline water to make it drinkable. There are two main types of desalination. In the first–called thermal desalination–heat is used. This produces water vapor that condenses on pipes into fresh water. This process remains dominant across the Middle East, where nearly half of the world's desalinated water is produced."

Thanks for checking in and don't forget to follow me on Twitter @TNelsonWX

@TNelsonWX (The Minnesota Star Tribune)

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Todd Nelson

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