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Thunderstorms will continue for portions of the northern Gulf of Mexico through early Tuesday afternoon. A warm front will be the focus for thunderstorm development this afternoon across the Central and Northern Plains. Some of these thunderstorms will have the potential to produce heavy to excessive rainfall.

  • Continued Thunderstorms through Early Tuesday Afternoon for the Northern Gulf of Mexico
  • Thunderstorms for the Central and Northern Plains on Tuesday
  • Excessive Rainfall Tuesday for the Northern Plains
  • Risk for Thunderstorms across the Upper Midwest on Wednesday
  • Potential for Thunderstorms Thursday across the Central High Plains

US Hazards Tuesday, July 3, 2018US Hazards

Watch the 2018 Hurricane Season Forecast

Continued Thunderstorms through Early Tuesday Afternoon for the Northern Gulf of Mexico
Thunderstorms will continue through the early afternoon as a weak area of low pressure slowly moves westward along the Gulf Coast. Some storms may produce winds in excess of 40 knots, locally enhanced seas, frequent lightning, and waterspouts. 

WDT Hazardous Thunderstorm Watch 7/3/18WDT Hazardous Thunderstorm Watch

Thunderstorms for the Central and Northern Plains on Tuesday
Plentiful moisture and an upper level low moving across the region will allow for the development of showers and thunderstorms along a warm front. Storms will initially develop during the afternoon with large hail, damaging winds, and tornadoes all being potential hazards. During the evening, storms should form clusters with damaging winds the primary hazard. This activity could continue into the overnight hours. 

Major Cities in Region: Scottsbluff, NE, Minot, ND, Bismarck, ND, Pierre, SD, Fargo, ND

Thunderstorm Risk for Tuesday, July 3, 2018Thunderstorm Risk for Tuesday

Excessive Rainfall Tuesday for the Northern Plains
Some of the thunderstorm activity described above will have the potential to produce heavy to excessive rainfall. Rainfall accumulations of 1-2 inches with locally higher amounts in excess of 3 inches are expected. Given recent rainfall, there will be a potential for flash flooding.

Major Cities in Region: Fargo, ND, International Falls, MN

Rainfall Accumulation for Tuesday, July 3, 2018Rainfall Accumulation for Tuesday

Risk for Thunderstorms across the Upper Midwest on Wednesday
The upper level trough responsible for the severe weather across the Northern Plains on Tuesday will not move much on Wednesday. At the surface, an area of low pressure will move into the eastern Dakotas. Warm moist air will be pulled northward ahead of the low through the day with thunderstorms developing during the afternoon. Damaging winds and large hail will be the primary hazards with these storms. This activity will likely continue into the overnight hours. 

Major Cities in Region: Rapid City, SD, International Falls, MN, Minneapolis, MN, Duluth, MN

SPC Convective Outlook for Wednesday, July 4, 2018SPC Convective Outlook for Wednesday

Potential for Thunderstorms Thursday across the Central High Plains
A ridge of high pressure moving into the Upper Mississippi Valley will shift winds to the east and southeast. With moist air moving northward and daytime heating, instability should be sufficient for the development of isolated strong to severe thunderstorms. Damaging winds will be the primary hazard, but large hail cannot be ruled out. 

Major Cities in Region: Denver, CO, Cheyenne, WY, Scottsbluff, NE

SPC Convective Outlook for Thursday, July 5, 2018SPC Convective Outlook for Thursday

A Look Ahead
Showers and thunderstorms will extend from the Northeast into the Ohio Valley on Friday ahead of a cold front. Going into the weekend, thunderstorms may develop across the Southeast on Saturday and again on Sunday as a result of daytime heating. Late Saturday, a few thunderstorms may develop across the Dakotas into the Upper Midwest as a cold front moves eastward. Early next week, there will be a potential for thunderstorms across the Southern Plains into the Lower Mississippi Valley. 

This is just a brief look at current weather hazards. We can provide you site-specific weather forecast information for the purpose of protecting your personnel and assets and to assess your weather risk. Try a 7-day demo right away and learn how timely precision weather information can enhance your bottom line.



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