diff --git a/README.md b/README.md
index 96ff8ef..7ad3e62 100644
--- a/README.md
+++ b/README.md
@@ -617,6 +617,17 @@ Admin commands to manage users.
 * !users list [pattern]  - List users matching wildcard pattern (must be owner)
 * !users kick [pattern]  - Kick users matching wildcard pattern from room (must be admin in room)
 
+### RASP (Gliding Weather forecast)
+
+Currently only Finnish RASP supported. Uses data from http://ennuste.ilmailuliitto.fi/
+
+#### Usage
+
+* !rasp [day] [hour]     - Fetch RASP for specified day and hour
+
+Day and hour can be omitted - fetches today's forecast if not set.
+PR welcome for supporting other data sources.
+
 ## Bot setup
 
 * Create a Matrix user
diff --git a/modules/rasp.py b/modules/rasp.py
new file mode 100644
index 0000000..51a7657
--- /dev/null
+++ b/modules/rasp.py
@@ -0,0 +1,19 @@
+from modules.common.module import BotModule
+import urllib.request
+
+class MatrixModule(BotModule):
+    async def matrix_message(self, bot, room, event):
+        args = event.body.split()
+        args.pop(0)
+        day = 0
+        hour = 12
+        if len(args) >= 1:
+            day = int(args[0]) - 1
+        if len(args) == 2:
+            hour = int(args[1])
+
+        imgurl = 'http://ennuste.ilmailuliitto.fi/' + str(day) + '/wstar_bsratio.curr.' + str(hour) + '00lst.d2.png'
+        await bot.upload_and_send_image(room, imgurl, f"RASP Day {day+1} at {hour}:00")
+
+    def help(self):
+        return 'RASP Gliding Weather forecast, Finland only'