diff --git a/app/public/dashboard.html b/app/public/dashboard.html
index edc0783..e977ff6 100644
--- a/app/public/dashboard.html
+++ b/app/public/dashboard.html
@@ -1334,6 +1334,11 @@ async function loadAlerts() {
     const r = await fetch('/api/dashboard/alerts');
     if (!r.ok) return;
     const data = await r.json();
+    if (data.noLocation) {
+      section.style.marginBottom = '1rem';
+      section.innerHTML = '<div class="alert-card sev-unknown" style="font-size:0.85rem">⚠ No location set — <a href="/dashboard/settings" style="color:var(--cool)">add your coordinates in Settings</a> to see NWS alerts.</div>';
+      return;
+    }
     const features = data.features || [];
     if (!features.length) { section.innerHTML = ''; section.style.marginBottom = '0'; return; }
     section.style.marginBottom = '1rem';
diff --git a/app/server.js b/app/server.js
index c0b2f71..303ce09 100644
--- a/app/server.js
+++ b/app/server.js
@@ -1344,6 +1344,7 @@ app.post('/api/dashboard/location', requireDashboardAuth, (req, res) => {
     return res.status(400).json({ error: 'Invalid coordinates' });
   dashAuth = { ...dashAuth, stationLat: +lat, stationLon: +lon };
   try { fs.writeFileSync(DASH_AUTH_FILE, JSON.stringify(dashAuth)); } catch {}
+  dashAlertCache.clear();
   res.json({ ok: true });
 });