National Weather Service United States Department of Commerce

Severe Thunderstorms Expected for Portions of the Northeast; Mountain Snow and Heavy Rain Persist in the West

Severe thunderstorms will continue to develop across the Upper Ohio Valley region into portions of the interior Northeast through this evening. Damaging winds are the main threat however, large hail and a couple of tornadoes are also possible. A Pacific storm in the West continues to persist producing mountain snow and moderate to locally heavy coastal/valley rain. Read More >

Link to Pan and Zoom RADAR Imagery

Latest RADAR imagery (KMAX--Mt Ashland)


KBHX--Eureka, CA


KBBX -- Beale AFB, CA


KRTX--Portland, OR



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Pan/Zoom RADAR

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Ground Clutter:

Image is what it can look like when there is no precipitation but significant ground clutter.  The grey and green areas won't move much. 


Actual Precipitation:

Image below shows precipitation in the area.  Green areas change/move like you'd expect with areas of rain/snow. 


Geocolor Loop


Infrared with Lightning

  • Good indicator for height of clouds
  • Colder/higher cloud tops are blue
  • Can use daytime or nighttime
  • Lightning "flashes" indicate include in-cloud, cloud to cloud, or cloud to ground flashes.

Fire Temperature

  • Good indicator for wildfire location and movement
  • Brighter reds indicate hotter fires
Day Cloud Phase Distinction

Day Cloud Phase Distinction

  • Helps determine if clouds include ice or not
  • Clouds transitioning from white shades to green and yellow shades indicate stronger showers
Water Vapor Imagery

Water Vapor Imagery

  • Used for tracking winds and moisture in the middle troposphere, as low as around 18,000 feet, or 500mb. Surface features are usually not apparent in this band.