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National Weather Maps. Surface Analysis. Highs, lows, fronts, troughs, outflow boundaries, squall lines, drylines for much of North America, the Western Atlantic and Eastern Pacific oceans, and the Gulf of Mexico.
- National Weather Service
NOAA National Weather Service National Weather Service NDFD...
- Central Rockies
US Dept of Commerce National Oceanic and Atmospheric...
- Marine
The National Weather Service (NWS) Marine Weather Services...
- Central Mississippi Valley
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- Fire Weather
Severe Weather and Heavy Rain Threat over the Central U.S.;...
- National Weather Service
AccuWeather’s Winter Center provides both national and local 24-hour snowfall forecast maps, as well as the National Weather Service Snow Depth map.
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Winter Weather Advisories are issued when snow, blowing snow, ice, sleet, or a combination of these wintry elements is expected but conditions should not be hazardous enough to meet warning criteria. Be prepared for winter driving conditions and possible travel difficulties.
- High and Low Pressure Areas
- What It Means on The Weather Map
- High and Low Pressure Systems: from Space
- Cold Fronts and Warm Fronts
- Cold Fronts and Warm Fronts: from Space
- Weather Satellites
Earth’s atmosphere is a jacket of gases that surrounds the planet. Although it seems like these gases could easily float away into space, gravity is constantly pulling the atmosphere toward Earth’s surface. The force with which our atmosphere pushes down on a specific location on Earth is called atmospheric pressure. Atmospheric pressure is mainly ...
A high pressure system is a dense air mass that is usually cooler and drier than the surrounding air. A low pressure system is a less dense air mass that is usually wetter and warmer than the surrounding air. In general, areas that experience high atmospheric pressure also experience fair weather. Low pressure systems can cause the formation of clo...
From high above Earth, satellites such as GOES-16 keep an eye on the weather brought by low pressure systems. The red “L” on the map above indicates a low pressure system in the Tennessee Valley region. In the video below from GOES-16, you can see what that same low pressure system looks like from a weather satellite.
A warm frontis the transition area where a mass of warm air moves to replace a mass of cold air. On a weather map, a warm front is usually drawn using a solid red line with half circles pointing in the direction of the cold air that will be replaced. Warm fronts usually move from southwest to northeast. A warm front can initially bring some rain, f...
GOES-16 and other weather satellites are also on the lookout for cold fronts and warm fronts and the weather they produce. Below, you can see the comparison of a cold front on a forecast map and a cold front in a satellite image.
Information from weather satellites, such as the GOES-R series and JPSSwill help improve our understanding of Earth’s weather. For example, the GOES-R series provides information about atmospheric water vapor and cloud height right now. This can help meteorologists monitor and track severe weather events, such as storms and hurricanes as they happe...
Nov 18, 2022 · November 18, 2022. At a Glance. A generally colder-than-usual winter is expected in the northern tier of states. Meanwhile, the southern U.S. is expected to have a warmer-than-average winter....
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Nov 22, 2021 · November 22, 2021. At a Glance. Forecasts for winter storms can be uncertain even a day or two in advance. Maps showing long-range snow forecasts from individual computer models should be...
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