What is a mesoanalysis?

It's a map of the weather right now, made from real measurements, so you can see the setup before storms, wind or fire danger develop: where moist air is flowing in, where the pressure is falling, where winds collide and lift the air. The top half of the list is drawn live from about 2,000 airport and city weather stations (updated every few minutes). The storm ingredients in the bottom half can't be measured directly everywhere, so they come from NOAA's HRRR model for the current hour, which starts from the latest observations.

Who uses it: storm-day decisions (plants, utilities, field crews, events), fire danger (low humidity and gusty wind), and anyone planning the next few hours. Forecasters at NOAA's Storm Prediction Center use the same kinds of maps.