Mesoscale Discussions
Mesoscale discussions (MCDs) generally precede a tornado watch or severe thunderstorm watch, by 1–3 hours when possible. Mesoscale discussions are designed to give local forecasters an update on a region where a severe weather threat is emerging and an indication of whether a watch is likely and details thereof, as well as situations of isolated severe weather when watches are not necessary. MCDs contain meteorological information on what is happening and what is expected to happen in the next few hours, and forecast reasoning in regard to weather watches. Mesoscale discussions are often issued to update information on watches already issued, and sometimes when one is to be canceled. Mesoscale discussions are also issued for winter weather and heavy rainfall events.
Read more about this topic: Storm Prediction Center
Famous quotes containing the word discussions:
“If I tell you that I would be disobeying the god and on that account it is impossible for me to keep quiet, you won’t be persuaded by me, taking it that I am ironizing. And if I tell you that it is the greatest good for a human being to have discussions every day about virtue and the other things you hear me talking about, examining myself and others, and that the unexamined life is not livable for a human being, you will be even less persuaded.”
—Socrates (469–399 B.C.)