Paragliders who use Windy
NWS Sioux Falls issued extreme blizzard warning in portions of northwest Iowa and southwest Minnesota.
Blizzard conditions are expected in Jackson, Pipestone, Osceola, Cottonwood, Lincoln, Nobles, Murray and Lyon. Additional snow accumulations of up to 2 inches are possible by Saturday evening. Winds gusting is expected as high as 55 mph on Saturday night and Sunday.
Read the full warning on Windy.
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Jan. 22, 2019 - Catastrophic floods hit the city of Makassar, the capital and the largest city of the southern province of Sulawesi, Indonesia.
Caused by two types of equatorial wave: Kelvin and Rossby waves. Kelvin waves are caused by the Coriolis Force (the rotation of the earth deflecting moving air towards the equator)
Rossby waves are caused by the rotation of the earth and are generally slow but faster near to the equator. An excellent graphic (although showing northern hemisphere) can be seen at: https://oceanservice.noaa.gov/facts/rossby-wave.html
When these waves hit a coastline, they are deflected away from the equator, northward and southward
The crossing of these waves created monsoon surge that collided with Indonesia creating heavy rainfall and flooding seen in the video. Effects of these events must be prepared for and forecasting is vital: both meteorological events themselves and the human impact.
(via Walker Institute)
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The folks at NOAA/NWS forecast that the first significant severe weather outbreak of 2019 may occur on Saturday, as a powerful storm system moves into the Plains.
Enhanced risk of severe storms are possible with damaging winds and tornadoes. Some larger population centers in enhanced risk area are Memphis, Bartlett, Southaven, Greenville and Collierville.
Stay safe and get up to day rain/thunder forecast.
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Saudis in Tabuk region experienced unusual weather conditions - snowfall blanketing this mountainous region.
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