to have a large amount of associated convection while passing over the Netherlands Antilles, as indicated by satellite images and surface observations. After satellite imagery observed a cyclonic rotation in the low-level convection, the fifth tropical depression of the season developed over the Caribbean around 00:00 UTC on August 4, while located about east of Isla de Providencia. However, this was based on surface observations, and the formation of a tropical cyclone operationally remained unconfirmed until another reconnaissance aircraft flight later that day. The depression initially moved to the northwest under the influence of a mid-level trough. Around 00:00 UTC on August 5, about 24 hours after developing, the cyclone intensified into a tropical storm while offshore northeastern Honduras; the National Hurricane Center assigned the name Diana to the system. Diana would subsequently strengthen further, with winds reaching before the storm made landfall near Felipe Carrillo Puerto, Quintana Roo, around 20:00 UTC later that day. The storm weakened while crossing the Yucatán Peninsula, and emerged into the Bay of Campeche early on August 6 with winds of . Upon entering the Bay of Campeche, Diana began moving nearly due west as a result of a weakening trough of low pressure. With conditions being more favorable in the Bay of Campeche, Diana quickly intensified, becoming a hurricane around 06:00 UTC on August 7. Twelve hours later, the cyclone intensified into a Category 2 hurricane and attained its peak intensity with maximum sustained winds of and a minimum barometric pressure of 980 mbar (hPa; ). At 19:00 UTC on August 7, just one hour after attaining peak intensity, Diana made landfall in Tamiahua, Tamaulipas, at the same intensity. Moving inland, Diana rapidly weakened over the high terrain of Mexico, quickly deteriorating from a low-end Category 2 hurricane to a strong tropical storm by 00:00 UTC on August 8. The system continued westward and weakened to a tropical depression roughly 12 hours later while centered near Mexico City. The weakening tropical depression turned west-northwestward over central Mexico and emerged into the Pacific Ocean on August 9, before dissipating as a tropical cyclone over the Gulf of California. The remnants of Diana curved northward around the eastern periphery of an upper-cyclone and tracked through the Gulf of California. Convection flared up before the remnant disturbance moved ashore in northwestern Sonora. The remnants of Diana entered Arizona and dissipated by early on August 14. Preparations