Heavy Rain in the Mid-Atlantic; Severe Thunderstorms in the Northern Plains; Critical Fire in the West

Locally heavy rain and flash flooding will be possible today into tonight near the Mid-Atlantic/Carolina coast. Storms with large hail and severe wind gusts are expected across parts of the central and northern Plains into the upper Mississippi Valley. Dry thunderstorms, and warm, dry, and windy conditions will produce fire weather conditions in parts of the Great Basin and northern Rockies. Read More >

A magnitude 7.9 earthquake occurred off the coast of Alaska early on Tuesday, January 23. Due to its location, damage in Alaska was minimized. However, the resulting underground movement was detected by seismometers far away.

This seismograph is located near Mansfield, in Piatt County. Each of the lines represents a time frame, in 15 minute increments past the hour (black, :00 to :15, red, :15 to :30, blue, :30 to :45, and green :45 to :60). Normally, they show very small oscillations. However, once the quake is detected, the oscillations change to a more sharp up-and-down register on the seismograph. While the quake occurred at 3:31 am CST, the underground movement took nearly 10 minutes to reach this far (around 3:40 am).

Alaska earthquake 1/23/18

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Heavy Rain in the Mid-Atlantic; Severe Thunderstorms in the Northern Plains; Critical Fire in the West

7.9 Magnitude Earthquake off Alaska Coast on Tuesday Seen on Illinois Seismometers