Windy Community
    • Unread
    • Categories
    • Groups
    • Go to windy.com
    • Register
    • Login

    Fire notifcations may not be accurate in Hawaii

    Scheduled Pinned Locked Moved Bug Reports
    5 Posts 3 Posters 600 Views 1 Watching
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • GullygardenG Offline
      Gullygarden | Premium
      last edited by

      Curious about accuracy of current fire notes in Hawaii. I am near one of the locations listed and I have seen no smoke. Also the eruption at Halemaumau is listed as massive acreage but it is confined in a crater.Screenshot 2025-07-21 at 12.08.20 PM.png

      WheatsW 1 Reply Last reply Reply Quote 0
      • WheatsW Offline
        Wheats Meteorologist @Gullygarden | Premium
        last edited by Wheats

        @Gullygarden

        Here you go friend, from the "info" icon when Active fires layer is selected:
        Active fires
        The data on active fires is provided by NASA FIRMS (Fire Information for Resource Management System). The presented value is called Fire Radiative Power (FRP) and depicts the pixel-integrated fire radiative power in MW (megawatts) over a square kilometer. To offer a comprehensive view of fires that is larger than one pixel, we present total area of a fire cluster. A single pixel corresponds to approximately 300 meters. On the minimap, a circle indicates the approximate location of a single fire pixel. For more information about how the data is collected, refer to FAQ page at NASA.

        It's more than likely accurately sensing hot spots. Maybe it's radiating enough heat out of the crater to make it seem larger? I've never been close to an active volcano before...is it hot? :p

        GullygardenG 1 Reply Last reply Reply Quote 1
        • GullygardenG Offline
          Gullygarden @Wheats | Premium
          last edited by

          @Wheats
          Yes, you can feel the radiating heat if you get close enough, (a big thrill believe me) but not multiple acres out. It still seem exaggerated. Maybe they are looking at the black lava and thinking it burned. There is a lot of lava in that area.

          WheatsW idefix37I 2 Replies Last reply Reply Quote 0
          • WheatsW Offline
            Wheats Meteorologist @Gullygarden | Premium
            last edited by

            @Gullygarden
            There's gotta be a reason. It's not a "they" looking at the data - it's straight up satellite data as far as I know. The satellite must just be picking up the heat from the surrounding area then is my guess.

            1 Reply Last reply Reply Quote 1
            • idefix37I Offline
              idefix37 Sailor Moderator @Gullygarden
              last edited by idefix37

              @Gullygarden
              @Wheats
              The question was raised whether a solar farm could produce active fire artifacts.
              https://community.windy.com/topic/36399/fires-showing-solar-farms?_=1753369431222
              In the case of Hawaii I don’t think there is a solar farm on top of the volcano, specifically in the crater :)

              507DE5D7-DE6C-41F5-BFAC-7C244018F568.jpeg

              Zooming in, we see that the "active fire" is located right in the crater. I therefore assume that the radiative power is significant enough to trigger the appearance of a pseudo-fire.

              1 Reply Last reply Reply Quote 1
              • First post
                Last post
              Windy Community  |  Powered by excellent NodeBB
              Terms of Use     Privacy Policy     Windy.com