News Alerts

09 Apr 2019 | 08:02 AM UTC

US: Second “bomb cyclone” to hit northern Plains April 10-11 /update 3

United States of America News Alert

Meteorologists warn of second “bomb cyclone” in northern Plains from April 10-11; strong winds, heavy snow, and blizzard conditions possible

TIMEFRAME expected from 4/9/2019, 12:00 AM until 4/12/2019, 11:59 PM (America/Chicago). COUNTRY/REGION Wyoming, Nebraska, South Dakota, Minnesota

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Event

A second "bomb cyclone" storm is expected to produce heavy snow and strong winds in the northern Plains from Wednesday, April 10, to Thursday, April 11. Adverse weather will begin to affect the region as early as Tuesday evening (local time), April 9, with the worst effects expected later on Wednesday and throughout Thursday. According to the US National Weather Service (NWS), this rapidly intensifying storm is forecast to bring more than 20 cm (8 in) of snow, with localized amounts of up to 50 cm (20 in), from eastern Wyoming to Minnesota, including most of South Dakota and Nebraska. Snowfall of 2.5-5 cm (1-2 in) an hour is forecast for some areas. Wind gusts of up to 88 kph (55 mph) are expected and can result in blizzard-like conditions in the region. Significant transportation disruptions are likely, including flight delays and cancelations and dangerous driving conditions. Power outages are also possible. The large amount of precipitation could also exacerbate flooding in the Midwest, which displaced thousands of residents and resulted in the deaths of four people.

Context

A "bomb cyclone" hit the Midwest and northern Plains in mid-March, causing massive flooding in the Missouri River basin. A bomb cyclone is a rapid drop in air pressure of at least 24 millibars in 24 hours, typically occurring over the ocean.

Advice

Individuals in the affected areas are advised to monitor local weather reports, prepare for winter weather, anticipate transportation disruptions, including flight delays and adverse driving conditions, power outages, and possible flooding. Remember that driving through running water can be dangerous - 15 cm (6 in) is enough to knock over an adult - and that floodwater may contain wastewater and chemical products; all items having come into contact with floodwater should be disinfected and all foodstuffs discarded.

 

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