On April 1st, National Weather Service Offices in the Central Region will be changing its severe weather warning criteria for hail size to one inch and larger (previously was penny sized 0.75). Some details behind the reason for this change can be found with this NWS webinar. The featured pie charts attempt to look forward to one probable outcome of this change, a decrease in the number of warnings. Of the 2200 warnings issued in the past two years, 24% of them were verified by only hail stones that would no longer justify a warning. The lower pie chart details the initial justification for issuing the warning based on product text. Please note the warning may have included a justifcation of damaging wind as well as hail, but this analysis only worries about what hail size was included. Half of the warnings issued mentioned hail sizes that will no longer be severe, again there may have been damaging winds mentioned in those as well.

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Tags:   hail   nws  

Looking at the current map of watches and warmings we see that we have got about everything form of weather shown. A flood warming (in blue), a thunderstorm warming (in red), a wind advisory (in brown), and a frost advisory (in green) are all working to make Friday a wonderful day. You may want to tie down those gnomes in the backyard before the wind carries them away or that angry neighbour takes the opportunity to carry them away and blame the wind!

Tags:   nws