ALT Graphic showing Earth during the June solstice and September equinox. At the equinox, sunlight is evenly distributed along the equator. Text notes Fall Equinox 2025 occurs Sept 22 at 2:19 pm EDT.
ALT 1. Heavy rainfall associated with Hilary could produce areas of flash flooding and result in landslides over portions of the Baja California Peninsula late tonight through late Sunday. Rainfall impacts from Hilary within the Southwestern United States are expected to peak this weekend into Monday. Flash, urban, and arroyo flooding is expected, with the potential for rare and dangerous impacts. 2. Hurricane conditions are expected within portions of the hurricane warning area along the west-central coast of the Baja California Peninsula on Sunday and are possible in the Hurricane Watch area. 3. Tropical storm conditions are possible on Sunday in portions of southern California where a Tropical Storm Watch has been issued. 4. Large swells from Hilary will spread northward along the coast of southwestern Mexico and the Baja California Peninsula. These swells will reach the Gulf of California and northern portions of the Baja California Peninsula later this weekend.
ALT National Hurricane Center track forecast for Hurricane Hilary
ALT Key Message for Tropical Storm Hilary Advisory 4. Rainfall impacts from Hilary within the Southwestern United States are expected to peak on Sunday and Monday. Large swells from Hilary will spread northward along the coast of Southwestern Mexico and the Baja California Peninsula during the next several days.
ALT Tropical Storm Hilary off the coast of Mexico will come northward toward Southern California this weekend. We know there will be increased surf/swell, gusty winds, and areas of heavy rain Saturday through Monday. Prepare for this system, as localized flooding, wind damage, and coastal erosion are potential impacts.
ALT Uncertainties remain with Tropical Storm Hilary, such as exact timing and degree of impacts, along with the path of the storm. Please follow NWS and NHC pages for the latest info.
ALT The Climate Prediction Center's 6-10 Day Precipitation Outlook, valid August 20-24. There is a 60-70% chance for above normal precipitation across all of Southern California, with much above normal chances extending through much of the Desert Southwest and Intermountain West. Elsewhere, there is above normal chances for below normal precipitation through much of the central and eastern United States.
ALT The Climate Prediction Center's 6-10 Day Temperature Outlook, valid August 20-24. There is a slight chance of below normal temperatures in Southern California. Elsewhere, the vast majority of the central and eastern United States will be above normal.
ALT Map of rainfall chances for southern California today. Chances of 10-15% will be realized across the coastal mountain slopes and the deserts, with chances of 15-25% in the mountains.
