Know which US drought product is selected
The Drought.gov current-conditions page presents the US Drought Monitor alongside other information. Its categories run from abnormally dry conditions through increasing drought severity. Read the legend's category names rather than interpreting a darker colour as a measured quantity such as millimetres of missing rain. An assessment category and a rain total are different kinds of information.
The drought-category explanation also helps distinguish maps of individual indicators from the combined assessment. A precipitation-based indicator, an evaporative-demand indicator and the Drought Monitor can describe different time windows and evidence. Similar colours do not make their methods identical. Keep the indicator name attached to every screenshot or numerical comparison.
Separate assessment dates from forecasts
For a current-conditions map, read the assessment period and release date. For a change map, read the two periods being compared. A one-week change layer answers how the category changed between assessments, not what category the location has now. Switching from the current map to a change map without updating the caption can reverse the apparent meaning of its colours.
The National Integrated Drought Information System links conditions, forecasts and regional resources. An outlook concerns possible future development; it is not a revised observation of the same historical week. When comparing an outlook with current conditions, retain the forecast valid period and state explicitly that one product is forward-looking.
Why rain and drought colours can differ
A rainfall episode and a longer-term drought assessment have different scopes. Avoid claiming that one wet day must remove a category from a regional map. Equally, a drought category does not establish the exact condition of every field, reservoir or household water supply inside it. For a local water question, identify the relevant water authority and its current notice instead of treating a national assessment as a restriction order.
The PocketWorld disaster explorer provides available source-labelled drought event context, not the complete US Drought Monitor or every indicator grid. A global event marker cannot be used to recreate D0–D4 boundaries. Use the linked official products when the question depends on a category, date or regional assessment. Our methodology explains how retained and fresh records are distinguished.
A reproducible comparison names the place, product, category, assessment period and forecast horizon where applicable. Link the original source and keep local restrictions separate. That is more informative than describing an entire state as newly dry because a viewer changed its legend, or newly recovered because a weather map happened to show rain.
Data sources
References are linked beside the explanations above. This evergreen guide does not report current incidents.