From the NWS…
RECORD EVENT REPORT
NATIONAL WEATHER SERVICE
LAS VEGAS NV
445 PM PDT
MON JUN 27 2011…ALL-TIME RECORD DEW POINT DEPRESSION SET AT LAS VEGAS TODAY…
AT 432 PM PDT TODAY THE DEW POINT DEPRESSION AT MCCARRAN INTERNATIONAL AIRPORT IN LAS VEGAS REACHED 129 DEGREES. THE DEW POINT DEPRESSION IS DEFINED AS THE DIFFERENCE BETWEEN THE AIR TEMPERATURE AND THE DEW POINT TEMPERATURE.
IN THE CASE OF TODAY THE AIR TEMPERATURE WAS 107 DEGREES AT 432 PM AND THE DEW POINT TEMPERATURE WAS -22 DEGREES. THIS MADE FOR A RELATIVE HUMIDITY OF 1 PERCENT AT THE TIME. THE PREVIOUS ALL-TIME RECORD DEW POINT DEPRESSION FOR LAS VEGAS WAS 120 DEGREES SET ON JULY 2ND 2007.
THE ABOVE INFORMATION IS PRELIMINARY AND IS SUBJECT TO A FINAL REVIEW BEFORE BEING CERTIFIED BY THE NATIONAL CLIMATIC DATA CENTER.
