National weather service atmospheric pressure. Current Barometric Pressure Map for the United States Current Weather Maps for the United States Current Temperature · Wind Chill · Heat Index · Dew Points · Weather Wind Speed · Wind Direction · Flight Rules · Barometric Pressure · Visibility Relative Humidity · Snow Locations · Rain Locations · Thunderstorms Radar · Cloudbase provides meteorological observations data in chart and table collected at stations with sensors, such as wind speed and direction, air temperature, water temperature, barometric pressure, relative humidity, and visability Raw and decoded airport observations You are accessing a U. Map Viewer - ArcGIS Map Viewer Nov 20, 2025 · Interactive map Local Climatological Data (LCD) [Advanced] Part of the National Centers for Environmental Information, Local Climatological Data hosts common past weather data including temperature, precipitation, wind, pressure, and more. It is a part of the National Oceanic and Atmospheric Administration (NOAA) branch of the NOAA Library For Students, Parents and Teachers Brochures ABOUT Organization Strategic Plan For NWS Employees International National Centers Products and Services Careers Glossary Contact Us US Dept of Commerce National Oceanic and Atmospheric Administration National Weather Service 1325 East West Highway Silver Spring, MD 20910 Comments Interactive atmospheric pressure map. The Mar 13, 2026 · Former National Oceanic and Atmospheric Administration chief scientist Ryan Maue said he expects extreme weather in all 50 states. 3 days ago · This map of the contiguous United States shows where above-normal temperatures are expected through April 1, according to the National Weather Service’s Climate Prediction Center. Current Observations across North and South Carolina Current Conditions around the Carolinas Check out our current weather graphics: Temperature, Dewpoint, Relative Humidity, Winds, Barometric Pressure Current MESONET observations -- find our how you can participate! Click on the map below for current conditions from cities around the Carolinas. The forecasting process begins with data collection from thousands of observation stations. Plymouth State Weather Center Surface Satellite Radar Upper Air Forecast Tropical Data Archive Research Extras About Us The Hurricane Hunters spend three months flying over Pacific storms to fill critical data gaps as atmospheric rivers pummel the West Coast. Any small space object that enters Earth's atmosphere is described as a meteor. West, parts of Plains iStock Feb 11, 2026 · About one-third of the U. 2 days ago · National Forecast Charts *PDFs will open in a new window or tab and require Adobe Acrobat Reader to view. Severe U. The extreme contrast between California’s heat and the Pacific Northwest’s flooding conditions highlights how a single high‑pressure system can shape weather across vast stretches of the West. The analysis plots are generated twice each day depicting 00 UTC and 12 UTC information. Feb 27, 2026 · Marine Graphical Products Unified Surface Analysis: Depiction of synoptic features every six hours from 20S to 50N between 0W and 165W, which is a combined effort between the National Hurricane Center, the Ocean Prediction Center, the Weather Prediction Center, and the Honolulu Weather Forecast Office. Although the changes are usually too slow to observe directly, air pressure is almost always changing. In the diagram below, the pressure at point "X" increases as the weight of the air above it increases. Atmospheric pressure is an indicator of weather. We also provide local weather maps with radar, cloud cover, and enhanced satellite imagery. A barometric pressure forecast provides crucial insights into upcoming weather patterns and atmospheric changes. 2 days ago · The extreme contrast between California’s heat and the Pacific Northwest’s flooding conditions highlights how a single high‑pressure system can shape weather across vast stretches of the West. By tracking pressure trends over multiple days, you can anticipate weather shifts, plan outdoor activities, and manage weather-sensitive health conditions. 12 Hour | 24 Hour | 36 Hour | 48 Hour 6 days ago · Studies have shown associations between temperature variability and increased asthma-related hospital visits. While the high will reach 81°F, the National Weather Service has issued a Rip Current Statement effective through Sunday evening. This change in pressure is caused by changes in air density, and air density is related to temperature. Users can input their zip code on the NWS website to find comprehensive weather reports, including barometric pressure information. . 5 days ago · The National Weather Service’s Climate Prediction Center also anticipates warmer temperatures than normal through April 10, which includes Easter Sunday. National Digital Forecast Page. Department of Commerce Spring Outlook: Drought forecasted to expand in U. Days of downpours have begun in Hawaii. ” Pressure Barometric Pressure Monitoring: Advanced Atmospheric Pressure Analysis Access real-time, accurate barometric pressure readings with our state-of-the-art atmospheric monitoring technology. Mar 23, 2025 · The severe weather outlook from the National Weather Service’s Storm Prediction Center shows a risk of scattered severe thunderstorms primarily north of the Interstate 10 corridor but close A) The National Weather Service only provides the data in 3 hour blocks. 96°W Elev: 344ft. Changes in temperature, humidity, and barometric pressure — a measure of the weight of the air that falls as fronts approach and rises after they pass — are “recognized triggers for migraine and severe headaches. By delivering real-time atmospheric data to the North American Global Telecommunications Service, the system supports various weather models and assists scientists in analyzing and predicting severe weather events. Mar 15, 2026 · March Madness: Winter Storm, Tornado Threat, Heat, Fires, Floods Hit The US At Once With a blizzard burying the upper Midwest, wildfires spreading across the Plains, dangerous flooding in Hawaii Mar 15, 2026 · The period begins on Sunday, March 15, with a baseline of instability. What it Means on the Weather Map Map showing atmospheric pressure in mbar or hPa Kollsman-type barometric aircraft altimeter The mean sea-level pressure (MSLP) is the atmospheric pressure at mean sea level. You can estimate what the forecast might be at a particular time by using the times before and after the time you want. When a low-pressure system moves into an area, it usually leads to cloudiness, wind, and precipitation. 12 hours ago · NOAA National Weather Service Albany, NY Last Map Update: Sun, Mar 22, 2026 at 10:26:15 pm EDT 2 days ago · A strong ridge of high atmospheric pressure will persist across the western and central U. The warning runs through 8 a. Search by state/territory, county, or zip code to download information. High-pressure systems usually lead to fair, calm weather. Government information system, which includes: 1) this computer, 2) this computer network, 3) all Government-furnished computers connected to this network, and 4) all Government-furnished devices and storage media attached to this network or to a computer on this network. Oct 27, 2023 · JetStream - An Online School for Weather Welcome to JetStream, the National Weather Service Online Weather School. You understand and consent to the following: you may access US Dept of Commerce National Oceanic and Atmospheric Administration National Weather Service 1325 East West Highway Silver Spring, MD 20910 Comments? Questions? Please Contact Us. Mar 15, 2026 · On March 12, an atmospheric river interacted with Arctic air from Canada, producing snowfall across the northern United States Rockies and the northern High Plains on March 13. Broader Impacts The deployment of the AVAPS Dropsonde System offers significant societal benefits. Pressure Altitude Calculator US Dept of Commerce National Oceanic and Atmospheric Administration National Weather Service El Paso, TX 7955 Airport Rd Santa Teresa, NM 88008 (575) 589-4088 Comments? Questions? Please Contact Us. Shows global forecasted mean sea-level pressure. Mar 13, 2026 · Stay updated with live coverage as a dangerous windstorm lashes Chicago, Minneapolis, and the Great Lakes, while a major March blizzard targets the Great Lakes. The height above sea level at which the pressure is that particular value may vary from one location to another at any given time, and also varies with Upper Air Data Upper Air Maps/Soundings Storm Prediction Center (SPC) soundings and maps. Based on data from the National Weather Service, San Diego office and from WeatherCurrents. Time on the water has confirmed the professor was speaking the truth, according to Heitkamp, who's been a meteorologist for the National Weather Service for the past 20 years. 9 hours ago · Last Map Update: Mon, Mar 23, 2026 at 1:18:44 am EDT WeatherBug has current and extended local and national weather forecasts, live weather radar, news, temperature, lightning, hurricane tracker and more Climate Data Online (CDO) main general search page for locating data within the National Climatic Data Center's (NCDC) archive of weather and climate data. 13153°N Lon: 110. Q) How accurate is the forecast? 1 day ago · Large parts of the United States are expected to experience an unusually hot and dry spring, with drought conditions forecast to expand across the West and parts of the Plains, according to the National Oceanic and Atmospheric Administration (NOAA). Get Your NWS Forecast US Dept of Commerce National Oceanic and Atmospheric Administration National Weather Service 1325 East West Highway Silver Spring, MD 20910 Comments? Questions? Please Contact Us. m. Unified Surface Analysis Archive The National Climatic Data Center (NCDC) archives most of 1 day ago · Parts of Indiana have a 50% chance of higher-than-normal temperatures from April to June 2026, according to the National Oceanic and Atmospheric Administration Spring Outlook released March 19. This site is designed to help educators, emergency managers, or anyone interested in learning about weather and weather safety. This is the atmospheric pressure normally given in weather reports via meteorologists on radio, television, and newspapers or on the Internet. Saturday and Sunday will both feature near-record temperatures in South Texas. Triple-digit heat persists in Southwest Mar 15, 2026 · The National Weather Service issued an ice storm warning for parts of northern Lower Michigan. University of Wyoming Upper Air maps. S. Web site of the NWS Aviation Weather Center, delivering consistent, timely and accurate weather information for the world airspace system Current Weather Maps for the United States Current Temperature · Wind Chill · Heat Index · Dew Points · Weather Wind Speed · Wind Direction · Flight Rules · Barometric Pressure · Visibility Relative Humidity · Snow Locations · Rain Locations · Thunderstorms Radar · Cloudbase · Current Surface · Drought Conditions · Sponsored Links 14 hours ago · NATIONAL HURRICANE CENTER and CENTRAL PACIFIC HURRICANE CENTER National Oceanic and Atmospheric Administration Alternate term for Isobaric Chart; a weather map representing conditions on a surface of equal atmospheric pressure. Pressure Unit Convertor Weather. 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 SURFACE TEMPERATURE MAPS National Temperatures (Data from the University of Illinois WW2010 Project) Selected Georgia temperatures Latest Wind Chill or Heat Index (depending on season) OTHER Snow Cover Snow Depth Hourly Weather Graph for Atlanta Upper air sounding for Peachtree City (from the Storm Prediction Center - Sounding Information Page Oct 19, 2023 · Aircraft create artificial pressure in the cabin so passengers remain comfortable while flying. Over 200 new record high temperatures are forecast. The experimental National Weather Service (NWS) HeatRisk is a color-numeric-based index that provides a forecast of the potential level of risk for heat-related impacts to occur over a 24-hour period, with forecasts available out through 7 days. 42 minutes ago · NOAA National Weather Service Seattle/Tacoma, WA Record Heat Remains in Place This Week; Severe Thunderstorms Possible Thursday Record warmth will persist across portions of California, the Southwest U. Some international data are available. These corrections are easily made by adding the the air pressure that would be exerted by the air column at that elevation. through the weekend, which will result in warm and dry weather for much of the nation. The pressure causes air to sink toward the ground, where the compression of air causes temperatures to increase. A weather service instrument called a 7 hours ago · NOAA National Weather Service Portland, OR Last Map Update: Mon, Mar 23, 2026 at 12:02:20 am PDT 4 days ago · The mid-level ridge of high pressure will expand over Texas on Friday and through the weekend, the weather service said. The Southwest will soon bake with day after day of record 100-degree-plus (38 Celsius-plus) heat. Consequently, higher elevations above sea level experience lower pressure 5 days ago · Houston weather could change drastically with unusual 90-degree temperatures expected over the weekend, weeks ahead of their normal May arrival. 2. Carefully track changes in atmospheric pressure to anticipate weather shifts, forecast storms, and enhance weather prediction accuracy. Weather maps showing the pressure at the surface are drawn using millibars. Mar 14, 2026 · Former National Oceanic and Atmospheric Administration chief scientist Ryan Maue said he expects extreme weather in all 50 states. Short range forecast products depicting pressure patterns, circulation centers and fronts, and types and extent of precipitation. Breezy conditions and afternoon thunderstorms are expected to produce localized wind gusts. NOAA National Weather Service Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 We would like to show you a description here but the site won’t allow us. DEPARTMENT OF - NATIONAL COMMERCE NIC OCEA AND ATMOSPHERIC ADMINISTRATION - National Weather - Obs ving Service Systems -West Branch, Hig way, 1325 Silver East Spring, Maryland 20910METAR\TA2\-8-96 We would like to show you a description here but the site won’t allow us. By 03:00 UTC on March 15, the Weather Prediction Center Mar 10, 2025 · The National Oceanic and Atmospheric Administration (NOAA) provides a range of meteorological data through its National Weather Service (NWS). WPC National Forecast Chart Fri Mar 20, 2026 Sat Mar 21, 2026 Sun Mar 22, 2026 » Link to static maps + Additional Links NOAA National Weather Service Current conditions at Reading, Reading Regional Airport (KRDG) Lat: 40. and Ohio. We would like to show you a description here but the site won’t allow us. Air pressure decreases naturally as we rise in the atmosphere, or up a mountain, we must make correction to the air pressure owing to elevation above sea level. On weather maps, these readings are represented as a blue “H” for high pressure or a red “L” for low pressure. 1 day ago · The graphic is from the National Weather Service showing the Jet Stream behavior over the Yuma area- the small green circle! This system causes air to descend, clearing clouds for over 1000 miles and allowing intense solar heating. This site contains upper air charts and soundings. [7][8] Throughout March 14, the system moved eastwards slowly deepening, before evolving into a Colorado low as a surface low emerged from the Rocky Mountains. NWS Boulder Denver Pressure Definitions STATION PRESSURE: This is the pressure that is observed at a specific elevation and is the true barometric pressure of a location. NCAR Real Time Upper air Weather Data. Feb 17, 2026 · At sea level, standard air pressure in millibars is 1013. gov > El Paso, TX > Pressure Unit Convertor Current Hazards Current Conditions Radar Atmospheric pressure is defined as the force per unit area exerted against a surface by the weight of the air above that surface. The temperature and wind speed graphs utilizes such an estimate by connecting the data with a straight line. National Oceanic and Atmospheric Administration National Digital Forecast Page. The National Weather Service (NWS), a division of the National Oceanic and Atmospheric Administration (NOAA), operates the primary infrastructure for collecting atmospheric data across the country. Des Plaines's elevation, about 640 feet above sea level, and flat landscape influence atmospheric pressure. 5 days ago · The US National Weather Service said the phenomenon was likely a meteor, after a “fireball” was widely reported over eastern Ohio and western Pennsylvania. ” Heat domes occur when winds in the upper atmosphere, also known as the jet stream, are influenced by the ocean below. 1 day ago · Page loaded: 22 Mar 2026 23:07 UTC | 22 Mar 2026 16:07 Local 4 days ago · A heat dome occurs in a system of high atmospheric pressure. Check today's United States barometric pressure in inHg and hPa across major cities, with 6-hour trends and 3-day forecast charts. It is the pressure exerted by the atmosphere at a point as a result of gravity acting upon the "column" of air that lies directly above the point. 37°N Lon: 75. Atmospheric pressure is measured with an instrument on the ground called a barometer, and these measurements are collected at many locations across the U. Weather balloon fact page, FAQ. SURFACE Global & Hemispheric Products Northern Hemisphere Mean Sea Level Pressure (FNL) Northern Hemisphere Surface Temperature Analysis (FNL) National Products Surface Analysis (Courtesy of Unisys Weather) Colorado 2 days ago · Current conditions at Tucson, Tucson International Airport (KTUS) Lat: 32. Radiosonde sensors measure upper-air conditions such as atmospheric pressure, temperature and humidity, wind speed and direction. National Oceanic and Atmospheric Administration U. Mar 13, 2026 · US forecasts blizzard, polar vortex, heat dome and atmospheric river all at once The United States is getting slammed by a stretch of weather extremes, from flooding rain to record heat and late 4 days ago · High atmospheric pressure across the western United States will expand east on Thursday with heat building in Texas through the weekend. For example, a 500 mb chart will display conditions at the level of the atmosphere at which the atmospheric pressure is 500 mb. Mar 16, 2026 · Widespread disruptions to travel and infrastructure are expected as the system strengthens into a bomb cyclone, a powerful, rapidly intensifying storm formed when central atmospheric pressure Mar 13, 2026 · Former National Oceanic and Atmospheric Administration chief scientist Ryan Maue said he expects extreme weather in all 50 states. Triple-digit heat persists in Southwest Dec 16, 2015 · But, barometric pressure readings can also predict whether fish are likely to be biting, or if they will soon be biting- or, perhaps, if it's best to stay home. The National Weather Service (NWS) is an agency of the United States federal government that is tasked with providing weather forecasts, warnings of hazardous weather, and other weather-related products to organizations and the public for the purposes of protection, safety, and general information. Monday for Cheboygan, Presque Isle, Leelanau, Antrim, Otsego 6 days ago · Mid-Atlantic Severe Weather Alert 5m · Public [Mon 3/16/26 10:40 am] URGENT WEATHER MESSAGE- TORNADO WARNING Issue by the Baltimore NWS office: BULLETIN EAS ACTIVATION REQUESTED Tornado Warning National Weather Service Baltimore MD/Washington DC 1033 AM EDT Mon Mar 16 2026 The National Weather Service in Sterling Virginia has issued a Tornado 6 days ago · The National Weather Service said a meteor likely entered the atmosphere, causing a boom over western Pa. , the central Great Basin and return back to areas of the central/southern Plains and mid-lower Mississippi Valley this week. Mar 15, 2026 · The National Weather Service has issued winter storm warnings and winter weather advisories for parts of southeast Wisconsin. 0ft. The outlook suggests that spring 2026 might feel more like early summer in many regions, as concerns intensify over a "dreaded heat dome"---a Mar 13, 2026 · US forecasts blizzard, polar vortex, heat dome and atmospheric river all at once The United States is getting slammed by a stretch of weather extremes, from flooding rain to record heat and late 2 days ago · What’s a heat dome? A heat dome occurs in a system of high atmospheric pressure. Temecula forecast updated daily. US Dept of Commerce National Oceanic and Atmospheric Administration National Weather Service 1325 East West Highway Silver Spring, MD 20910 Comments? Questions? Please Contact Us. Plymouth State Upper Air maps College of Dupage Upper Air analysis Miscellaneous What to do if you find a weather balloon. 4 days ago · According to the National Weather Service, the “anomalously early” heat wave is caused by a dome of high pressure that build and settles over the West, “baking the region in sweltering conditions. As a result, we 6 days ago · The National Weather Service identified the item as a meteor earlier Tuesday. by the National Weather Service. NOAA National Weather Service Latest weather observations around Tallahassee FL NOAA National Weather Service Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 Current Weather Plots The plots and images under this heading are all relatively current. 95635°W Elev: 2546. Our weather conditions include temperature, precipitation, wind, humidity, ultraviolet (UV), visibility, air quality, and pressure. economy – some $3 trillion – is sensitive to weather and climate. National Weather Service Mar 20, 2025 · The National Weather Service issues red flag warnings when strong winds and low humidity can allow wildfires to spread more easily and out of control. Mar 13, 2026 · US Weather to Go Nuts with Blizzard, Polar Vortex, Heat Dome, Atmospheric River All at Once Nearly every part of the United States is getting walloped by wild weather or just about to be. Local & national weather forecasts, conditions, maps, and news Yahoo Weather provides up-to-the-minute weather conditions and hourly, daily, and weekly local forecasts. Get real-time weather alerts, damage reports, and forecast updates as conditions intensify across the Midwest. The starting point for graphical digital government weather forecasts. [5] The altimeter setting in aviation is an atmospheric pressure adjustment This affects the weather, making it sunny, cloudy, or stormy. Upper Air Soundings Twice every day, from nearly 100 locations in the United States, the National Weather Service launches weather balloons, carrying instrument packages called radiosondes. uhcbxjr ehmckmu eig zjzge uze zyvvo jlwgyu eyf nzcu mbtbsk