diff --git a/static/js/add-spot.js b/static/js/add-spot.js
index dec7188..9c187f4 100644
--- a/static/js/add-spot.js
+++ b/static/js/add-spot.js
@@ -150,6 +150,9 @@ function loadCredentials(providerName) {
 // Method called to add a spot to the server
 function addSpot() {
     try {
+        $("#result-bad").empty();
+        setSubmitting(true);
+
         // Save settings (this will save "your call" for future use)
         saveSettings();
 
@@ -214,6 +217,7 @@ function addSpot() {
                 }, 2000);
             },
             error: function (result) {
+                setSubmitting(false);
                 if (window._recaptchaWidgetId !== undefined) {
                     grecaptcha.reset(window._recaptchaWidgetId);
                 }
@@ -225,11 +229,19 @@ function addSpot() {
             }
         });
     } catch (error) {
+        setSubmitting(false);
         showAddSpotError(error);
     }
     return false;
 }
 
+// Show or hide the "in progress" state on the Spot button.
+function setSubmitting(submitting) {
+    $("#add-spot-submit").prop("disabled", submitting);
+    $("#add-spot-spinner").toggle(submitting);
+    $("#add-spot-submit-text").text(submitting ? "Spotting..." : "Spot");
+}
+
 // Show an "add spot" error.
 function showAddSpotError(text) {
     const div = $("<div class='alert alert-danger alert-dismissible fade show mb-0 mt-4' role='alert'></div>");
diff --git a/templates/add-spot.html b/templates/add-spot.html
index 156136c..b509896 100644
--- a/templates/add-spot.html
+++ b/templates/add-spot.html
@@ -72,7 +72,11 @@
                            placeholder="N0CALL" required>
                 </div>
                 <div class="col-auto">
-                    <button type="submit" class="btn btn-primary mt-2em">Spot</button>
+                    <button type="submit" id="add-spot-submit" class="btn btn-primary mt-2em">
+                        <span id="add-spot-spinner" class="spinner-border spinner-border-sm me-1" aria-hidden="true"
+                              style="display:none;"></span>
+                        <span id="add-spot-submit-text" role="status">Spot</span>
+                    </button>
                 </div>
             </form>
 
@@ -138,7 +142,7 @@
     const ALLOW_UPSTREAM_SPOTTING = {% raw safe_json_dumps(web_ui_options["allow_upstream_spotting"]) %};
 </script>
 
-<script src="/static/js/add-spot.js?v=1790503760"></script>
+<script src="/static/js/add-spot.js?v=1790514682"></script>
 <script>$(document).ready(function () {
     $("#nav-link-add-spot").addClass("active");
 }); <!-- highlight active page in nav --></script>
diff --git a/templates/alerts.html b/templates/alerts.html
index 5523f16..45ceed6 100644
--- a/templates/alerts.html
+++ b/templates/alerts.html
@@ -87,7 +87,7 @@
 
 </div>
 
-<script src="/static/js/alerts.js?v=1790503760"></script>
+<script src="/static/js/alerts.js?v=1790514682"></script>
 <script>$(document).ready(function () {
     $("#nav-link-alerts").addClass("active");
 }); <!-- highlight active page in nav --></script>
diff --git a/templates/bands.html b/templates/bands.html
index 25aa23a..1987a87 100644
--- a/templates/bands.html
+++ b/templates/bands.html
@@ -82,8 +82,8 @@
     const BANDS = {% raw safe_json_dumps(options["bands"]) %};
 </script>
 
-<script src="/static/js/spotsbandsandmap.js?v=1790503760"></script>
-<script src="/static/js/bands.js?v=1790503760"></script>
+<script src="/static/js/spotsbandsandmap.js?v=1790514682"></script>
+<script src="/static/js/bands.js?v=1790514682"></script>
 <script>$(document).ready(function () {
     $("#nav-link-bands").addClass("active");
 }); <!-- highlight active page in nav --></script>
diff --git a/templates/base.html b/templates/base.html
index 530b8ea..dab7428 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -1,6 +1,6 @@
 {% extends "skeleton.html" %}
 {% block head_extra %}
-<link rel="stylesheet" href="/static/css/style.css?v=1790503760" type="text/css">
+<link rel="stylesheet" href="/static/css/style.css?v=1790514682" type="text/css">
 <link href="/static/vendor/css/bootstrap-5.3.8.min.css" rel="stylesheet">
 <link href="/static/vendor/css/fontawesome-6.7.2.min.css" rel="stylesheet">
 <link href="/static/vendor/css/solid-6.7.2.min.css" rel="stylesheet">
@@ -16,10 +16,10 @@
     window.fetchEventSource = fetchEventSource;
 </script>
 
-<script src="/static/js/utils.js?v=1790503760"></script>
-<script src="/static/js/ui-ham.js?v=1790503760"></script>
-<script src="/static/js/geo.js?v=1790503760"></script>
-<script src="/static/js/common.js?v=1790503760"></script>
+<script src="/static/js/utils.js?v=1790514682"></script>
+<script src="/static/js/ui-ham.js?v=1790514682"></script>
+<script src="/static/js/geo.js?v=1790514682"></script>
+<script src="/static/js/common.js?v=1790514682"></script>
 {% end %}
 {% block body %}
 <div class="container">
diff --git a/templates/conditions.html b/templates/conditions.html
index 25dbbf2..3dc3791 100644
--- a/templates/conditions.html
+++ b/templates/conditions.html
@@ -284,7 +284,7 @@
 </div>
 
 <script src="/static/vendor/js/chart-4.4.9.umd.min.js"></script>
-<script src="/static/js/conditions.js?v=1790503760"></script>
+<script src="/static/js/conditions.js?v=1790514682"></script>
 <script>$(document).ready(function () {
     $("#nav-link-conditions").addClass("active");
 }); <!-- highlight active page in nav --></script>
diff --git a/templates/map.html b/templates/map.html
index 96d3745..c1d5b08 100644
--- a/templates/map.html
+++ b/templates/map.html
@@ -115,8 +115,8 @@
     const CARTODB_API_KEY = "{{ web_ui_options.get('cartodb_api_key', '') }}";
 </script>
 
-<script src="/static/js/spotsbandsandmap.js?v=1790503760"></script>
-<script src="/static/js/map.js?v=1790503760"></script>
+<script src="/static/js/spotsbandsandmap.js?v=1790514681"></script>
+<script src="/static/js/map.js?v=1790514681"></script>
 <script>$(document).ready(function () {
     $("#nav-link-map").addClass("active");
 }); <!-- highlight active page in nav --></script>
diff --git a/templates/spots.html b/templates/spots.html
index a0cf0e4..b7384af 100644
--- a/templates/spots.html
+++ b/templates/spots.html
@@ -127,8 +127,8 @@
 
 </div>
 
-<script src="/static/js/spotsbandsandmap.js?v=1790503760"></script>
-<script src="/static/js/spots.js?v=1790503760"></script>
+<script src="/static/js/spotsbandsandmap.js?v=1790514681"></script>
+<script src="/static/js/spots.js?v=1790514681"></script>
 <script>$(document).ready(function () {
     $("#nav-link-spots").addClass("active");
 }); <!-- highlight active page in nav --></script>
diff --git a/templates/status.html b/templates/status.html
index 920d60b..af3f137 100644
--- a/templates/status.html
+++ b/templates/status.html
@@ -96,7 +96,7 @@
     </div>
 </div>
 
-<script src="/static/js/status.js?v=1790503760"></script>
+<script src="/static/js/status.js?v=1790514682"></script>
 <script>
     $(document).ready(function () {
         $("#nav-link-status").addClass("active");