diff --git a/db/xmet.sql b/db/xmet.sql
index 1c800a1..50c93ac 100644
--- a/db/xmet.sql
+++ b/db/xmet.sql
@@ -161,6 +161,8 @@ create table xmet_spc_outlook (
     body             TEXT NOT NULL
 );
 
+create index xmet_spc_outlook_timestamp_start_idx on xmet_spc_outlook (timestamp_start);
+
 create table xmet_spc_outlook_probability_area (
     id          INTEGER PRIMARY KEY NOT NULL,
     outlook_id  INTEGER NOT NULL,