diff --git a/assets/js/propagation_map_hook.js b/assets/js/propagation_map_hook.js
index f8118768..dc8c9923 100644
--- a/assets/js/propagation_map_hook.js
+++ b/assets/js/propagation_map_hook.js
@@ -680,6 +680,14 @@ export const PropagationMap = {
       return
     }
 
+    // Hide timeline if all times are within 1 hour (no real forecast spread)
+    const firstDt = new Date(this.timelineData[0].time)
+    const lastDt = new Date(this.timelineData[this.timelineData.length - 1].time)
+    if (lastDt - firstDt < 3600000) {
+      this.timelineEl.style.display = "none"
+      return
+    }
+
     const now = new Date()
     const items = this.timelineData.map((t, idx) => {
       const dt = new Date(t.time)