Hurricane Hilary Downgraded to a Tropical Storm, Battered Southern California with Heavy Rain and Flash Flooding: Get Actionable Insights on EigenPrism
Hurricane Hilary weakened to a tropical storm as it made landfall in Southern California on Sunday. This is the first tropical storm to strike the Baja Peninsula and continue north since 1997. The storm brought strong winds and heavy rain, causing power outages, flooded streets, and some rescue operations. In addition, the storm shattered rainfall records in Southern California: Palm Springs received almost a year’s rain at 4.3 inches in 24 hours, among its rainiest days. Death Valley approached a record with 1.68 inches, and Furnace Creek, typically seeing 0.2 inches in August, recorded 0.63 inches.
Through Tuesday morning, rainfall of up to 5 inches is possible across parts of Oregon and Idaho; the impact includes the potential for hazardous flooding and heavy rainfall. Hilary is projected to dissipate over central Nevada by Monday. The storm is now headed to Nevada becoming the first tropical system to impact Nevada, since 1997.
Actionable Insights on EigenPrism
To make timely decisions about this event, EigenPrism® users can assess the impact using the following quick links:
- Tropical Storm Hilary Past Wind Swath – Advisory 19A as of 2023-08-21
- Tropical Storm Hilary 2023 5-day Past Max Winds as of 2023-08-22
Subscribers of reask, ICEYE & KatRisk can assess impact using the following quick links:
- Hurricane Hilary HindCyc Footprint from reask as of 2023-08-23
- TropicalCyclone – Southwest (USA) 2023 – Flood Inundation from ICEYE as of 2023-08-22
- TropicalCyclone – Southwest (USA) 2023 – Flood Extent from ICEYE as of 2023-08-22
- Hilary 2023 Inland Flood Inundation Footprint from KatRisk as of 2023-08-21
August 18, 2023 | Category 4 Hurricane Hilary Approaches Baja California, Raises Flood Concerns for US Southwest: Get Actionable Insights on EigenPrism
Hurricane Hilary, now a Category 4 storm, is moving towards Mexico’s Baja California peninsula. While the storm may briefly intensify on Friday, it is expected to weaken as it encounters colder waters. Over the weekend, there is a growing chance of heavy rain and flooding in Southern California and the Southwest. The peninsula may face flash floods and mudslides.
As of Friday, the storm was located about 425 miles south of Cabo San Lucas, with sustained winds of 140 mph. Mexican authorities have issued hurricane and tropical storm watches for parts of Baja California Sur. Hilary could bring 3 to 6 inches of rain, possibly up to 10 inches, to the region alongside a storm surge causing coastal flooding. The storm’s path could alter intense rain and wind predictions in the US.
Actionable Insights on EigenPrism
To make timely decisions about this event, EigenPrism® users can assess the forecast using the following quick links:
- Hurricane-Force (>64 kt) Wind Probabilities for the 120 hours as of 2023-08-18
- Tropical Storm-Force (>34 kt) Wind Probabilities for the 120 hours as of 2023-08-18
- Hurricane Hilary Forecast Wind Swath – Advisory 07A as of 2023-08-18
- Hurricane Hilary 2023 5-day Forecast Max Winds as of 2023-08-18
- WPC 3-Day Excessive Rainfall Outlook as of 2023-08-18
Impact Summary Report
For EigenPrism users, the forecast report template for Hurricane Hilary is now available:
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