Category: Posts EN

Tornadoes, 100-mph Winds, and Baseball-Size Hail Ravage the Plains

Written by Team Morecast

 

A slow-moving trough has been pumping dynamic mid to upper level energy across the Plains (see water vapor imagery below) over the last several days. Meanwhile, juicy Gulf moisture and warmth have fed in from the south. The combination of upper level energy and surface instability has led to multiple rounds of severe storms. Almost 400 reports of severe weather were received on 1-2 May (Tuesday and Wednesday), including 32 tornadoes.

 

 

One of the largest tornadoes of the outbreak rolled across northern Kansas on Tuesday evening (see tweeted video below). The twister had a lifespan of about 30 minutes, covering almost 15 miles in that time, and was at one point almost 1,000 yards wide! After post-storm damage analysis, the tornado was rated EF-3 on the Enhanced Fujita scale. Elsewhere, large hail up to four inches in diameter was recorded with storms in Nebraska and Kansas. A wind gust to 106 mph was recorded with a severe cell in Oklahoma.

 

 

 

Another Round of Severe Storms on Thursday in the Plains!

Written by Team Morecast

 

Tornadoes and destructive straight-line wind gusts exceeding 100 mph have slammed the Plains today. The system responsible for severe weather today isn’t going anywhere in a hurry! More high winds, large hail, and isolated tornadoes are expected for Thursday.

 

 

Wednesday night’s storms will weaken into early Thursday morning, but could still produce some locally heavy rain and lightning from central Texas into the Ozarks and the Mid-Mississippi Valley. Daytime heating will help build instability by early afternoon. Upper-level winds will remain quite strong. The combination of instability and shear will lead to severe storms building by mid-afternoon.

The greatest risk for severe storms is expected from northeast Oklahoma into eastern Kansas, Missouri, southeast Iowa, and northwest Illinois. A more isolated or marginal risk of severe storms will extend down into north Texas and north and east into the Midwest. Large hail up to three inches in diameter, destructive wind gusts to 80 mph, and isolated tornadoes will occur well into Thursday night.

More Severe Storms Coming for Tuesday over the Plains!

Written by Team Morecast

 

Severe storms are rumbling across portions of the Plains tonight, producing high winds and large hail. The system responsible for tonight’s activity will shift a bit further south for Tuesday. Additional surface instability and dynamic intensity will mean an added threat for isolated tornadoes along with hail and wind gusts!

 

 

The main threat for severe storms will be from west-central Kansas into southern Nebraska and southwest Iowa. Storm coverage will be more isolated down into western Oklahoma and the Texas Panhandle. Scattered storms will occur further northeast into the Midwest, but the severe threat with these storms is more marginal. Any of these storms will be capable of producing large hail and strong, damaging winds. A few isolated tornadoes could also occur in northern Kansas and southern Nebraska.

More severe weather is likely for Wednesday – we’ll continue to provide updates for this evolving situation!

Three-Day Severe Outbreak Threatens the U.S. Plain States!

Written by Team Morecast

 

A large, strong storm system will organize over the Rocky Mountains over the next several days. Pieces of energy will rotate out of this larger system, producing a severe storm threat for at least the next three days over parts of the Plains. Very large hail, destructive winds, and perhaps a few tornadoes will occur.

There will be a narrow corridor of sufficient instability on all three days, so the east-west extent of the severe risk will not be wide. However, within that narrow corridor, afternoon heating will produce moderate instability. Meanwhile, strong vertical wind shear will combine with the instability to produce severe cells.

 

 

 

The best threat for severe storms on Monday afternoon and evening will be found in Nebraska and eastern South Dakota. Look for severe storms on Tuesday afternoon and evening from western Oklahoma through Kansas to eastern Nebraska. By Wednesday, the severe risk will stretch from west-central Texas through Oklahoma and eastern Kansas.

Very large hail and high winds will accompany severe storms on all three days. Isolated tornadoes will be more of a threat for Tuesday and Wednesday.

Lead picture courtesy flickr user Anthony Quintano.