NOAA's National Weather Service is building a Weather-Ready Nation by providing better information for better decisions to save lives and livelihood.
Each year, the United States averages some 10,000 thunderstorms, 5,000 floods, 1,300 tornadoes and 2 Atlantic hurricanes, as well as widespread droughts and wildfires. Weather, water and climate events, cause an average of approximately 650 deaths and $15 billion in damage per year and are responsible for some 90 percent of all presidentially-declared disasters. About one-third of the U.S. economy – some $3 trillion – is sensitive to weather and climate. National Weather Service (NWS) provides weather, hydrologic, and climate forecasts and warnings for the United States, its territories, adjacent waters and ocean areas, for the protection of life and property and the enhancement of the national economy.
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For example, NOAA Weather predicts weather conditions for Jan. 28
Central Rocky Mountains, Midwest and Great Lakes parts of the Great Lakes may experience heavy snowfall. ...... This weekend
Arctic air surges southward into the central and western mountains, producing potentially dangerous cold winds
Sunday across the Gulf Coast and southeast could heavy rain and flash flooding ...... The main weather story for the next few days will be with Arctic cold front moving south across the Great Plains and Intermountain West, and with it comes bitter cold and a chance of heavy snow.
For the Northern/Central High Plains, Rocky Mountains and western U.S. mountains, snow is expected to continue along and behind the frontal boundary today and Sunday concentrated in the central Rockies. The largest additional snowfall totals are expected to occur in higher elevations in Wyoming and western Colorado, where several feet of snow is possible.
Heavy snow could also sweep through the Southern California mountains on Sunday, which could make travel through the Cajon Pass difficult. Widespread winter storm warnings and winter weather advisories have been issued for much of the region due to the potential for snowfall making driving conditions hazardous. The snow can be heavy at times, which can greatly reduce visibility and make travel more dangerous.
Low pressure is developing and running along the frontal boundary over the Central Plains, producing an axis of moderate to locally heavy snow north of its center.
Additional narrow bands of 4-6 inches of snow are expected from northern Iowa to lower Michigan by early Sunday, with locally higher amounts.
Western Canada delivers an Arctic stream southward behind the frontal boundary covering the western mountains and plains. Temperatures are expected to be 20 to 40 degrees below average through Sunday, spreading across the northern Rockies and northern/central plains with highs reaching only single digits and lows dropping into the low teens. Wind gusts will make it colder and could lead to hazardous conditions for those spending extended periods of time outdoors.
As the Arctic frontal boundary moves south into the southern plains, a surge of warm, moist air ahead of the system heading north will produce showers and thunderstorms along the Gulf Coast and southeast. A storm with few storms capable of controlling heavy rainfall rates could lead to scattered flash flooding events. Also on Sunday, some isolated thunderstorms may occur along the central Gulf Coast. A marginal risk of excessive rainfall (Level 1/4) has been issued for southeast Texas and western Louisiana today to further emphasize the potential for flash flooding. The severity of the threat and regional coverage expanded on Sunday to a slight risk (Level 2) /4) of heavy rainfall covering the entire Gulf Coast and southern Georgia.
Images available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
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