SPC storm ingredients: feeds current
SPC storm ingredients: Feed current; checked .
Checked means retrieved, not newly issued. Each graphic retains its issue, observation, initialization or valid time. Site publishing status is separate.
Storm ingredients: SPC’s hourly analysis
Surface moisture: Surface temperature, dew point and sea-level pressure (°F, mb)
Temperature and dew point at the ground, and pressure. Dew points in the 60s °F and higher are the moist air severe storms usually need.
The technical reading
SPC’s objective analysis of the surface: temperature and dew point in °F, dew point shaded from 56 °F, isobars of mean sea-level pressure in millibars, and wind barbs. It blends the hourly observations with a short-range model first guess, so it can differ from a single station.
An ingredient, not a forecast: SPC’s analysis of the hour, from observations and a short-range model’s first guess. No one value is a warning or an outcome; storms need several ingredients together, and something to start them.
SPC mesoanalysis checked · Data: NOAA/SPC
Not an official warning service. Warnings and watches are the National Weather Service’s, outlooks and reports the Storm Prediction Center’s and the Weather Prediction Center’s (Data: NOAA/NWS, NOAA/SPC, NOAA/WPC). When a warning is issued for you, act on it, and use weather.gov or a NOAA Weather Radio for where you are.