For the next 3-8 days (ld6 +2), starting with the day in question, the temperature will rise at the rate of 4 steps per day until it reaches a high point one step above the normal maximum temperature. Roll on the [[Day-to-Day Change Table]] as usual each day, but disregard the Temperature Change column for the duration of the heat wave. When the temperature rises to one step above the normal maximum, it will remain at that level for the duration of the heat wave. If the normal maximum temperature level is “26” ( on the [[Temp Code]] chart) (high of 115, low of 85), the highest possible temperatures during the heat wave will be 10 degrees hotter (high of 125, low of 95), and the heat wave will only last for at most three days after the temperature rises to this level (counting the day on which the extra-high temperatures first occur). When the heat wave ends, the temperature will automatically fall to the normal maximum on the first day thereafter, and will fall even lower if the [[Day-to-Day Change Table]] roll is 7 or less. For example: It is the first month of spring in a temperate mountain region, and the temperature for the current day is "11" (on the [[Temp Code]] table) (high of 50, low of 30). The tables indicate that a heat wave will begin on the following day, and a roll of 3 on d6 determines that the heat wave will last for 5 days. On the following day the temperature will rise by 4 steps, to "15" (on the [[Temp Code]] chart) (high of 70, low of 55). On the second day of the heat wave, the temperature will rise only 3 more steps, to "18" (on the [[Temp Code]] chart) (high of 80, low of 65) because this is one step higher than the normal maximum temperature at this time of year for this terrain/ climate combination. The temperature will remain at level "18" (on the [[Temp Code]] chart) for two more days thereafter until the heat wave breaks. On the first day after the heat wave, the temperature will automatically fall one step, to "17" (on the [[Temp Code]] chart) . If a 7 or less is rolled on the [[Day-to-Day Change Table]] Table for that day, the temperature will fall an additional 1,2, or 3 steps. If an 8 or greater is rolled, the temperature remains at level "17" (on the [[Temp Code]] chart) , since this is the highest the temperature can be under normal circumstances.