Strong Bering Storm Impacting Portions of Alaska; Critical Fire Weather Conditions in the Great Basin and Northern Rockies

A strong Bering Sea storm will continue to impact the Aleutian Islands and parts of southwestern Alaska through Friday. High Wind Warnings have been issued for the entire Aleutian Island chain. Across the Great Basin and northern Rockies, strong winds and dry conditions will lead to critical fire weather conditions Friday as a strong Pacific system moves inland. Read More >

Upper Air Observations

Decoded Upper Level Winds
Plotted Upper Air Soundings

GOES Derived Atmospheric Vertical Soundings
Alternate Sources for Upper Air Soundings
Ohio State

California Wind Profiler Data Can be Found Here

Why Do Forecasters Still Rely on Weather Balloons?

Twice every day, from nearly 100 locations in the United States, the National Weather Service launches weather balloons, carrying instrument packages called radiosondes. Radiosonde sensors measure upper-air conditions such as atmospheric pressure, temperature and humidity, wind speed and direction. The data is important for aviation safety, and meteorologists use radiosonde information to prepare weather forecasts.

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