diff --git a/weather.py b/weather.py
index 493be0a..8187fb6 100644
--- a/weather.py
+++ b/weather.py
@@ -342,7 +342,19 @@ def get_alert(
                 muted = True
             lines = alert.split("\n")
             import time
-            valid_time = time.strftime("%Y%m%d%H%M")
+            # TODO: make this offset configurable
+            # TODO: adjust offset relative to the difference between the user's
+            #       local time and the zone's local time (will need to extend
+            #       the schema in the zones file to store each tz
+            offset = 86400  # one day
+
+            # report alerts and forecasts that expired less than offset ago;
+            # this is a cheap hack since expiration times seem to be relative
+            # to the zone's local timezone, and converting from the user's
+            # would get complicated, but also there can sometimes be a lag
+            # between expiration and the next update
+            valid_time = time.strftime(
+                "%Y%m%d%H%M", time.localtime(time.time() - offset))
             output = []
             for line in lines:
                 if line.startswith("Expires:") \