Weather 2.0

[Hilary Laite]

Scatteredsevere thunderstorms are expected across portions of the central/northern Plains Sunday while heavy to excessive rainfall may bring flooding to northern Minnesota and the Tennessee Valley. Dry and windy conditions will bring elevated to critical fire weather across parts of the Great Basin while dry thunderstorms may lead to new wildfire starts in the northern Rockies. Read More >

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.

With nearly 4,900 employees in 122 weather forecast offices, 13 river forecast centers, 9 national centers, and other support offices around the country, NWS provides a national infrastructure to gather and process data worldwide.

A mere 6 inches of fast-moving flood water can knock over an adult. It takes just 12 inches of rushing water to carry away a small car, while 2 feet of rushing water can carry away most vehicles. It is NEVER safe to drive or walk into flood waters.

Displays flood and flash flood reports as well as intense rainfall observations for user-selectable time ranges and customizable geographic regions. Includes ability to download reports and associated metadata in csv format. GEFS Probabilities Plots of GEFS probabilistic forecast of precipitation, temperature, and sea-level pressure exceeding various thresholds.

Displays the climatological significance of precipitation forecast by WPC. The climatological significance is represented by Average Recurrence Intervals (ARIs) of precipitation estimates from NOAA Atlas-14 and Atlas2.

An interactive situational awareness table that displays anomalies, percentiles, and return intervals from the GEFS, NAEFS, and ECMWF Ensembles (login required to view ECMWF data). *Please note that there is currently an issue where only users on a NOAA network can access this page. We are actively working to resolve this problem.

Displays Days 1-7 NDFD maximum and minimum temperatures, along with their respective departures from climatology. Prototype Snowband Probability Forecasts An interactive tool that depicts areas of heavy snowfall from individual members of high-resolution short range ensemble forecasts. Weather in Context Prototype Displays forecast information and its climatological context to quickly alert a forecaster when a record or neear-record breaking event is possible. This tool is available for both CONUS and Alaska. Prototype Specialized Excessive Rainfall Maps Interface for specialized WPC Excessive Rainfall Outlook Maps for NWS County Warning Areas and States. 1/3/6/24-hr Changes Change in weather parameters (temperature, dewpoint, surface pressure, etc) over the last 1/3/6/24 hours. Data is provided from the Real-Time Mesoscale Analysis (RTMA) or the Rapid Refresh (RAP).

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.

Since most of the park lies at an elevation of 6,000 feet (1829 m) above sea level or higher, unpredictability characterizes Yellowstone's weather. Expect big temperature swings, rain, or snow during every month of the year. No matter when you visit, bring a warm jacket, rain gear, and lots of layers.

Daytime temperatures are often around 70F (21C) and occasionally 80F (27C) at lower elevations. Nights are usually cool and temperatures may drop below freezing at higher elevations. Thunderstorms are common in the afternoons.

Temperatures range from zero to 20F (-18C to -7C) throughout the day. Sub-zero temperatures are common, especially at night and at higher elevations. The record low temperature is -66F (-54C). Snowfall is highly variable. While the average is 150 inches (381 cm) a year, it is not uncommon for higher elevations to get twice that amount.

70% of air traffic delays are due to inclement weather, according to the American Meteorological Society, resulting in billions of dollars loss to airlines and passenger dissatisfaction. With the frequency and severity of disruptive aviation incidents, you need a weather partner you can trust.

From planning your day to staying safe in severe weather, The Weather Channel, Weather Underground, and Storm Radar are part of the daily habit for more than 50 million people a day. And with 89% of people opting-in to share their location, our consumer properties are widely trusted by users and advertisers looking for a brand-safe environment.

The increasing intensity of global weather events makes it more difficult for government and defense personnel to plan and simulate upcoming operations effectively, potentially resulting in costly delays, equipment damage, and dangerous situations.

But when used correctly, weather can be a powerful ally. Our comprehensive, AI-powered weather modeling and simulation solutions can improve strategic decision-making by integrating highly accurate and globally scaled forecast data into government and defense planning and simulation environments, saving time, money, and precious resources.

We are now leveraging our big data smarts to deliver on the promise of IoT. By integrating our hyper-local weather data with Smart Home connected devices we are delievering predictive energy efficiency insight to homeowners and Utility companies.

Researchers from World Weather Attribution assessed the influence of human-caused climate change on dangerous heat waves over the past 12 months, in collaboration with Climate Central and the Red Cross Red Crescent Climate Centre.

World Weather Attribution uses weather observations and climate models to understand how climate change influences the intensity and likelihood of extreme weather events. The studies also assess the role of vulnerability and exposure in the extent of the impacts.

The 53rd Weather Reconnaissance Squadron, a component of the 403rd Wing located at Keesler Air Force Base in Biloxi, Miss., is a one-of-a-kind organization. It is the only operational unit in the world flying weather reconnaissance on a routine basis.

The mission of the Hurricane Hunters is to recruit, organize and train assigned personnel to perform aerial weather reconnaissance. They provide surveillance of tropical storms and hurricanes in the Atlantic Ocean, the Caribbean Sea, the Gulf of Mexico and the central Pacific Ocean for the National Hurricane Center in Miami. The unit also flies winter storm missions off both coasts of the United States.

AIRCRAFT:

To perform their mission, the Hurricane Hunters have 10 WC-130J aircraft. These Super Hercules aircraft are equipped with palletized meteorological data-gathering instruments. The WC-130J is the next generation "Hurricane Hunter" designed to continue weather reconnaissance well into the 21st century.

PERSONNEL AUTHORIZED:

The 53rd WRS is authorized 20 aircrews. Fifty-nine unit members hold air reserve technician positions. The rest of the squadron is made up of Air Force Reservists.

WC-130Js carry a basic crew of five: pilot, co-pilot, navigator, flight meteorologist and weather reconnaissance loadmaster. The pilot, who serves as the aircraft commander, and the co-pilot man the flight controls. The navigator keeps track of the aircraft's position and movement and monitors radar to avoid tornadic activity. The flight meteorologist acts as flight director and observes and records meteorological data at flight level using a computer that encodes weather data every 30 seconds. The weather reconnaissance loadmaster collects and records vertical meteorological data using a parachute-borne sensor known as a dropsonde. It measures and encodes weather data down to the ocean surface.

Co-located with the National Hurricane Center in Miami, is a small group of Air Force Reserve civilian personnel, assigned to the 53rd WRS. The supervisory meteorologist of the unit serves as Chief, Aerial Reconnaissance Coordination, All Hurricanes, better known as CARCAH.

These personnel are responsible for coordinating Department of Commerce requirements for hurricane data, tasking weather reconnaissance missions and monitoring all data transmitted from weather reconnaissance aircraft.

Hurricane Hunters wrap up Hurricane Sam missions Inside the eye of Hurricane Sam, members of the 53rd Weather Reconnaissance Squadron collect weather data. The data is sent to the National Hurricane Center, which is used to improve the forecast models and help people prepare. (U.S. Air Force photo by Maj. Joyce Hirai)

Senior Airman Donny Arseneaux, a loadmaster for the 53rd Weather Reconnaissance Squadron at Keesler Air Force Base, Miss., deploys an Airborne Expendable Bathythermograph from a WC-130J Aug. 5, 2021. The AXBT measures ocean temperature from surface level down to to around 400 meters. (U.S. Air Force by Staff Sgt. Kristen Pittman)

Members of the 53rd Weather Reconnaissance Squadron fly into Hurricane Sally to gather data on September 14, 2020, in the Gulf of Mexico. The Hurricane Hunters fly through tropical systems to gather weather data that they provide to the National Hurricane Center for their use in updating the storm forecast warnings. (U.S. Air Force photo by Staff Sgt. Shelton Sherrill)

Near the Leeward Islands and Greater Antilles: An area of disturbed weather over the central tropical Atlantic Ocean is expected to interact with an approaching tropical wave during the next couple of days. Environmental conditions are forecast to become conducive for some development thereafter, and a tropical depression could form mid to late week while the system is near or over the northern Leeward Islands, Greater Antilles, or southwestern Atlantic Ocean. * Formation chance through 48 hours, low, near 0 percent. * Formation chance through 7 days, medium, 40 percent.

3a8082e126