diff --git a/code/hooks.js b/code/hooks.js
index 1aff0010..43f4cc35 100644
--- a/code/hooks.js
+++ b/code/hooks.js
@@ -30,11 +30,16 @@
 //              yet been displayed. The data hash contains both the un-
 //              processed raw ajax response as well as the processed
 //              chat data that is going to be used for display.
-
+// portalDataLoaded: callback is passed the argument of
+//              {portals : [portal, portal, ...]} where "portal" is the
+//              data element and not the leaflet object. "portal" is an
+//              array [GUID, time, details]. Plugin can manipulate the
+//              array to change order or add additional values to the
+//              details of a portal.
 
 window._hooks = {}
 window.VALID_HOOKS = ['portalAdded', 'portalDetailsUpdated',
-  'publicChatDataAvailable'];
+  'publicChatDataAvailable', 'portalDataLoaded'];
 
 window.runHooks = function(event, data) {
   if(VALID_HOOKS.indexOf(event) === -1) throw('Unknown event type: ' + event);
diff --git a/code/map_data.js b/code/map_data.js
index dc370cd6..6729c0f0 100644
--- a/code/map_data.js
+++ b/code/map_data.js
@@ -127,6 +127,8 @@ window.handleDataResponse = function(data, textStatus, jqXHR) {
 
   // Preserve and restore "selectedPortal" between portal re-render
   if(portalUpdateAvailable) var oldSelectedPortal = selectedPortal;
+  
+  runHooks('portalDataLoaded', {portals : ppp});
   $.each(ppp, function(ind, portal) { renderPortal(portal); });
 
   var selectedPortalLayer = portals[oldSelectedPortal];