diff --git a/lib/microwaveprop/weather/hrrr_client.ex b/lib/microwaveprop/weather/hrrr_client.ex
index 6cd8895b..45a5240b 100644
--- a/lib/microwaveprop/weather/hrrr_client.ex
+++ b/lib/microwaveprop/weather/hrrr_client.ex
@@ -178,9 +178,13 @@ defmodule Microwaveprop.Weather.HrrrClient do
       Enum.map_join(ranges, ", ", fn {start, stop} -> "#{start}-#{stop}" end)
 
     case Req.get(url, [{:headers, [{"Range", "bytes=#{range_header}"}]} | req_options()]) do
-      {:ok, %{status: status, body: body}} when status in [200, 206] ->
+      {:ok, %{status: 206, body: body}} ->
         {:ok, body}
 
+      {:ok, %{status: 200}} ->
+        Logger.warning("HRRR server ignored Range header, returned full file")
+        {:error, "HRRR range request not supported"}
+
       {:ok, %{status: status}} ->
         {:error, "HRRR grib HTTP #{status}"}
 
diff --git a/lib/microwaveprop/workers/hrrr_fetch_worker.ex b/lib/microwaveprop/workers/hrrr_fetch_worker.ex
index 2da4894f..66ebc897 100644
--- a/lib/microwaveprop/workers/hrrr_fetch_worker.ex
+++ b/lib/microwaveprop/workers/hrrr_fetch_worker.ex
@@ -69,6 +69,7 @@ defmodule Microwaveprop.Workers.HrrrFetchWorker do
 
   defp permanent_failure?("HRRR idx HTTP 404"), do: true
   defp permanent_failure?("HRRR grib HTTP 404"), do: true
+  defp permanent_failure?("HRRR range request not supported"), do: true
   defp permanent_failure?(:outside_grid), do: true
   defp permanent_failure?("malformed section"), do: true
   defp permanent_failure?("missing sections: " <> _), do: true