• DATVF.ATLPHL
    1.706
    0.015
    0.9%
  • DATVF.CHIATL
    1.975
    0.071
    3.7%
  • DATVF.DALLAX
    0.924
    0.014
    1.5%
  • DATVF.LAXDAL
    1.546
    0.092
    6.3%
  • DATVF.SEALAX
    0.892
    0.012
    1.4%
  • DATVF.PHLCHI
    1.015
    0.041
    4.2%
  • DATVF.LAXSEA
    2.140
    -0.004
    -0.2%
  • DATVF.VEU
    1.565
    0.042
    2.8%
  • DATVF.VNU
    1.439
    0.033
    2.3%
  • DATVF.VSU
    1.235
    0.053
    4.5%
  • DATVF.VWU
    1.516
    0.004
    0.3%
  • ITVI.USA
    10,856.810
    -37.810
    -0.3%
  • OTRI.USA
    4.760
    0.080
    1.7%
  • OTVI.USA
    10,838.010
    -38.560
    -0.4%
  • TLT.USA
    2.430
    -0.060
    -2.4%
  • WAIT.USA
    150.000
    -1.000
    -0.7%
  • DATVF.ATLPHL
    1.706
    0.015
    0.9%
  • DATVF.CHIATL
    1.975
    0.071
    3.7%
  • DATVF.DALLAX
    0.924
    0.014
    1.5%
  • DATVF.LAXDAL
    1.546
    0.092
    6.3%
  • DATVF.SEALAX
    0.892
    0.012
    1.4%
  • DATVF.PHLCHI
    1.015
    0.041
    4.2%
  • DATVF.LAXSEA
    2.140
    -0.004
    -0.2%
  • DATVF.VEU
    1.565
    0.042
    2.8%
  • DATVF.VNU
    1.439
    0.033
    2.3%
  • DATVF.VSU
    1.235
    0.053
    4.5%
  • DATVF.VWU
    1.516
    0.004
    0.3%
  • ITVI.USA
    10,856.810
    -37.810
    -0.3%
  • OTRI.USA
    4.760
    0.080
    1.7%
  • OTVI.USA
    10,838.010
    -38.560
    -0.4%
  • TLT.USA
    2.430
    -0.060
    -2.4%
  • WAIT.USA
    150.000
    -1.000
    -0.7%
NewsWeather

Flooding, severe storms, snow to hit Great Plains (forecast video)

Two seasons in one

A potent low pressure system and associated frontal boundaries will make for more messy, stormy weather and delays for drivers from the Rockies to the Great Lakes. This system spawned several tornadoes yesterday, September 10, mostly in rural, low-population areas. However, one tornado struck Sioux Falls, South Dakota, today in the pre-dawn hours.

The worst storms today, which will be severe in the afternoon and evening, will produce very large hail, powerful winds and more tornadoes from northeastern Colorado, southeastern Wyoming and the Nebraska Panhandle to northern Iowa, southern Minnesota, central Wisconsin and lower Michigan. The National Weather Service (NWS) outlooks, housed inside the FreightWaves SONAR Critical Events platform, are highlighted in the map directly below.

SONAR Critical Events: Tuesday, Sept. 10 as of 10 a.m. EDT.

Drivers will have to slow down at times on I-80 from Cheyenne to Grand Island, I-76 east of Denver, I-90 from Sioux Falls to La Crosse, and I-29 from Sioux Falls to Omaha. Severe storms may also hit Milwaukee and Detroit. Storms have already flooded portions of northern Nebraska and western Iowa today. More localized flash flooding may lead to roadblocks of secondary routes or interstate ramps in the target areas.

The same system will dump two to three inches of rain across parts of Big Sky country, where the ground is already saturated. Runoff will likely cause flooding along the Milk River, especially in northeastern Montana. The National Weather Service has issued a Flood Watch for these areas north of I-94.

SONAR Critical Events: Tuesday, Sept. 10 as of 10 a.m. EDT.

Meanwhile, up to four inches of early season accumulating snowfall will cover roads in the Bighorn Mountains of Wyoming through tonight, with an inch or two in the high elevations of Yellowstone National Park. Beartooth Pass on US-212 in Montana could see six to eight inches. This won’t affect interstate travel, but rather drivers making local or regional deliveries into these areas.

Tropical update

The Atlantic basin is free of tropical cyclones at this time. However, one disturbance in the Caribbean has potential to become an organized system. The tropical wave is located just north of Haiti and will drop locally heavy rainfall across portions of the Bahamas over the next few days, including some areas recently devastated by Hurricane Dorian. The National Hurricane Center (NHC) is giving this disturbance a 40 to 60 percent chance of turning into a tropical depression or tropical storm by this weekend or early next week as it possibly moves into the Gulf of Mexico.

SONAR Critical Events: Tuesday, Sept. 10 as of 10 a.m. EDT.

Have a great day and be careful out there!

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Nick Austin, Director of Weather Analytics and Senior Meteorologist

In his 17 years of weather forecasting experience, Nick worked on air at WBBJ-TV and WRCB-TV, including time spent doing weather analysis and field reporting. He received his Bachelor of Science in Meteorology from Florida State University as well as a Bachelor of Science in Management from Georgia Institute of Technology. Nick is also a member of the American Meteorological Society and National Weather Association. As a member of the weather team at WBBJ-TV in Jackson, Tennessee, Nick was nominated for a Mid-South Emmy for live coverage of a major tornado outbreak in 2008. As part of the weather team at WRCB-TV in Chattanooga, Tennessee, Nick shared the Chattanooga Times-Free Press Best of the Best award for “Best Weather Team” for eight consecutive years. Nick earned his National Weather Association Broadcasting Seal in 2005.

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