Try serializing requests to NOMDAS (#450)

aldenks · web-flow · commit 5c65cea92496 · 2026-02-25T10:00:55.000-05:00
diff --git a/src/reformatters/noaa/gfs/region_job.py b/src/reformatters/noaa/gfs/region_job.py
@@ -42,7 +42,7 @@
 type DownloadSource = Literal["s3", "nomads"]
 
 # Limit concurrent NOMADS requests to avoid overloading their servers
-_nomads_semaphore = threading.Semaphore(4)
+_nomads_semaphore = threading.Semaphore(1)
 
 
 class NoaaGfsSourceFileCoord(SourceFileCoord):
diff --git a/src/reformatters/noaa/hrrr/region_job.py b/src/reformatters/noaa/hrrr/region_job.py
@@ -43,7 +43,7 @@
 type DownloadSource = Literal["s3", "nomads"]
 
 # Limit concurrent NOMADS requests to avoid overloading their servers
-_nomads_semaphore = threading.Semaphore(4)
+_nomads_semaphore = threading.Semaphore(1)
 
 
 class NoaaHrrrSourceFileCoord(SourceFileCoord):
