Everything was arranged for the desert
The plan sounded almost impossible to ruin: meet outside Las Vegas, place the chairs against open desert, let the preacher stand beneath the arch and time the vows for golden hour. There would be no ballroom ceiling, no hotel carpet and no city noise in the photographs.
Rain barely entered the conversation. This was the desert. The couple worried about the heat, the drive and whether everybody would find the location. They did not picture dark clouds turning the horizon into a wall or water moving across ground that had looked bone-dry an hour earlier.
Desert does not mean rain cannot become dangerous
Las Vegas has a monsoon season. The City of Las Vegas describes it as generally running from late June into mid-September and warns that its storms can trigger damaging and deadly flash floods. A place can receive little rain overall and still have a serious problem when a great deal arrives quickly.
That is what makes the scenario memorable. The same open land that made the wedding package beautiful offered very little separation between the event and the weather. The chairs, flowers and carefully chosen clothing were built for the photograph. The storm was operating on a different schedule.
The risk was seasonal before it was personal
No website can promise the exact weather for a wedding many months away. Historical weather can still reveal that a date sits inside a season with a particular risk. Later, when the date enters forecast range, the question changes from what has happened around this time to what is expected during the actual ceremony hours.
The desert wedding remains a beautiful idea. The fuller picture simply includes the monsoon that never appeared in the sales photograph.