1 inch is good, not the 2-3 inches which would be too much and cause flooding.
This is why I don't find drought maps useful-- they go strictly by numbers. Getting a multi inch monster rainstorm wouldn't solve our drought problem, it's just useless runoff and does more harm in the form of flooding than good. But looks great on drought maps. What we need is smaller rainfalls of around an inch or so once every week or 10 days, that's more beneficial than big rainfall events. This is what we used to get in the past not these big 3 inch rainstorms that became all too common starting about 20 years ago.