Issued or Partial Issued States: IA, MN, WI – Map inside shows affected state areas.
Site: National Weather Force has issued a Tornado Watch effective now through 10PM Central Tonight …
Date: 5/19/22 at 2:10pm Central Time
Forecast: A surface low will move across the region this afternoon and evening starting in the IA/MN areas of the watch first and moving eastward with time. …and this will bring a corridor of surface instability to the watch area. This, with developing low-level shear will make tornadoes possible.
Given the instability/shear values, notable tornado dynamics will be in the area, enough for a low to medium-grade watch for up to EF1-2 tornadoes, but, I do see on my model a small area of moderate, thus we could have an isolated strong tornado in this watch.
In addition to the tornado risk, large hail and damaging winds will be likely …
A NWF Tornado Watch is issued when notable tornado dynamics exist. Weaker spin-ups can happen in the ‘weak’ category, but boxes for that are usually not issued, therefore the box will only cover the notable and over dynamics in the model below …
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