The U.S. Drought Monitor (USDM) is a resource producers can use to help determine how to best respond and react to a drought as it develops or lingers.
The USDM is an online, weekly map showing the location, extent, and severity of drought across the United States. It categorizes the entire country as being in one of six levels of drought. The map is released on Thursdays and depicts conditions for the week.
The USDM provides producers with the latest information about drought conditions where they live, enabling producers to best respond and react to a drought as it develops or lingers. In some cases, the USDM may help a producer make specific decisions about their operation, such as reducing the stocking rate because forage is not growing. For others, it may provide a convenient big-picture snapshot of broader environmental conditions.
The USDM incorporates varying data – rain, snow, temperature, streamflow, reservoir levels, soil moisture, and more – as well as first-hand information submitted from on-the-ground sources such as photos, descriptions, and experiences. The levels of drought are connected to the frequency of occurrence across several different drought indicators. What makes the USDM unique is that it is not a strictly numeric product. The mapmakers rely on their judgment and a nationwide network of 450-plus experts to interpret conditions for each region. They synthesize their discussion and analysis into a single depiction of drought for the entire country.