There is insufficient evidence to determine whether trends exist in such events as tornadoes, hail, lightning and dust storms which occur at small spatial scales. (ipcc.ch)
Actions occur at a very small spatial scale, where variability is huge and unpredictable. (judithcurry.com)
«It throws into question some [modeling] approaches that [compile an] average over small spatial scales,» he says. (sciencemag.org)