Close Encounter?

The Wall Street Journal:

This will be the first open-air acceptance speech for a presidential candidate since John F. Kennedy spoke in the Los Angeles Coliseum in 1960.

It's a gamble in part because of the weather. For now, the forecast looks good: Thursday should be sunny and in the 80s.

"Things can change," said meteorologist Eric Thaler of the National Weather Service. Denver skies, especially in late summer, are notoriously unpredictable. This weekend, five tornados hit surrounding suburbs. Four years ago, the temperature here dipped to 42 degrees on Aug. 28, the date of the speech. That date also has seen gusts of winds as strong as 53 miles per hour, thunderstorms, a lightning strike and hail three-quarters of an inch in diameter.

In 1875, a cloud of locusts descended, so thick that they darkened the sun and so hungry that they destroyed every garden in Denver.

Area Forecast Discussion here.
Less technical Zone Forecast here.