LEXINGTON — A cold front descending out of the Dakotas is expected to initiate a line of thunderstorms during the afternoon of Saturday June 8 across the region.
The Storm Prediction Center in Norman, Okla., has placed much of Central Nebraska, including Dawson County, under a slight risk for severe weather, a two on a scale of five.
National Weather Service Hastings forecaster Shawn Rossi said, “Timing is everything when it comes to this system.” If the timing does hold, thunderstorms could start to breakout at early as 3 p.m. with peak coverage and intensity coming between 7 to 10 p.m., said Rossi.
“Tornadoes are not a threat with this system,” said Rossi, “There is not enough spin in the atmosphere.”
Severe thunderstorms will be imbedded in a line of storms which will move northwest to southeast across the area. Threats will include quarter sized hail, wind gusts up to 60 miles per hour and locally heavy rain fall, up to one inch.
Owing to the cold front, the temperature shift will be at least 15 degrees. The high for Saturday is forecasted to be 83 degrees, highs on Sunday will be around 64 degrees, Rossi said.
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Issued when conditions are favorable for damaging storms to develop. These watches typically cover a large area and are in effect for several hours. If a watch is issued, people should think about what they’ll do if a dangerous storm suddenly develops. For example, if you have outdoor plans, have an idea where you’ll go for shelter and how you’ll monitor the forecast. More worrisome is a severe thunderstorm warning.
This is serious. Pay attention if it's issued for your area. It means National Weather Service radar or a storm spotter has detected or seen a powerful storm. These types of storms are capable of causing serious damage, either from hail that is larger than an inch or winds that are in excess of 58 mph. These are targeted to just the area in the storm's path, unlike a watch, which covers many counties. Typically, the weather service describes the path the storm is traveling, and what kind of damaging weather it's capable of producing If you are outdoors and in the path of the storm, seek shelter or try to pull off the road to avoid the storm. These storms also can generate tornadoes with little warning.
Conditions are favorable for tornadoes to develop. Watches are issued for large areas and generally for a long period of time. Sometimes watches cover portions of several states and can last for several hours. Have a plan for what you’ll do if a tornado suddenly develops. More serious is a tornado warning.
Head for shelter! Tornado warnings are issued when radar has detected rotation in a cloud or a storm spotter has seen a tornado. Take cover immediately if a warning is issued for your area. Even though you may not see the tornado, it could be there, hidden in rain, or it could drop from the sky above you without warning. Warnings typically last about 30 minutes. Local sirens will sound when warnings are issued. But keep in mind that some sirens could be disabled by the tornado, so you may not hear one.
A violent swirling column of air that stretches from ground to a cloud, with winds in excess of 65 mph. Winds with a tornado can reach 300 mph or more. On a local scale, tornadoes are the most destructive of storms. You can't tell how powerful a tornado is by looking at it. Also, if you are watching a tornado and can't tell that it's traveling in one direction or another, then it is traveling toward you.
A swirling column of air that extends downward from a cloud but doesn't reach the ground.
Hail must be 1-inch wide to be considered damaging. Keep in mind that wind direction often determines which side of a building or car is damaged.
A tornado that isn’t spawned by a powerful storm cell and typically stretches to the ground from a towering, but less threatening cloud. A waterspout occurs over water.