A strong to severe thunderstorm across northern Graham County, which previously warranted a Severe Thunderstorm Warning for quarter sized or larger hail, was replaced with a Significant Weather Advisory. This was due to a spotter report of dime sized hail as well as evaluation of the MRMS 50 dbZ Echo Height Above the -20C Product. The product showed a rapid decrease from near 20,000 feet to 6,500 feet before the warning expired. Subsequent product updates decreased this to 0 feet following advisory issuance.

Kurtz/Guseman