Further improvements to the hourly weather report prompt

prompts/pipeline-weather/hourly/hourly_generated_text.user.md

@@ -27,7 +27,16 @@ In the lead, distinguish the main weather outcome from the caveat. If showers an
 
 Example style:
 
-- “The rest of the afternoon is expected to be warm, partly cloudy, and dry. There is a slight chance of isolated showers and thunderstorms from late afternoon into early evening.”
+- “The rest of the afternoon is expected to be warm and dry, with partly cloudy skies. There is a slight chance of isolated showers and thunderstorms from late afternoon into early evening.”
+
+Where the forecast conditions vary over the course of the period, either (a) synthesize them into a single, coherent description where the conditions are similar, or (b) clearly explain a shift in conditions over time.
+
+Examples:
+- Bad: "The remainder of the day and evening will be sunny to mostly clear and dry ..."
+- Good: "The remainder of the day and evening will be clear and dry ..."
+
+- Bad: "The remainder of the day and evening will be partly cloudy to cloudy with showers ..." 
+- Good: "The next few hours will be partly cloudy, then transition to overcast skies with showers likely after 6 PM ..." 
 
 # forecast_discussion