Tropical Storm Mario (2025)

Last updated
Map key
Saffir–Simpson scale
  Tropical depression (≤38 mph, ≤62 km/h)
  Tropical storm (39–73 mph, 63–118 km/h)
  Category 1 (74–95 mph, 119–153 km/h)
  Category 2 (96–110 mph, 154–177 km/h)
  Category 3 (111–129 mph, 178–208 km/h)
  Category 4 (130–156 mph, 209–251 km/h)
  Category 5 (≥157 mph, ≥252 km/h)
  Unknown
Storm type
Disc Plain black.svg Tropical cyclone
Solid black.svg Subtropical cyclone
ArrowUp.svg Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

On September 8, a tropical wave entered the far eastern Pacific from Central America. [1] The disturbance began showing signs of organization on September 10, as it tracked just offshore of the coast of southern Mexico, [2] and was designated Tropical Depression Thirteen-E the following afternoon. [3] As the depression tracked west-northwestward on the morning of September 12, it strengthened into Tropical Storm Mario about 25 mi (35 km) off the coast of Guerrero. [4] When it formed, tropical storm force winds only extended 25 mi (40 km) from its center, prompting the National Hurricane Center to label it "mini". [5] [6] Later that day, a large low-pressure area began developing to the south of Mario, which caused Mario to weaken into a tropical depression. [7] Weakening continued throughout the night, and Mario degenerated into a remnant low early on September 13. [8] The remnants of Mario continued to produce disorganized convection as it moved slowly westward through the day. [9] Convection organized and deepened, and by the next morning, a well-defined circulation had reformed. As a result, Mario redeveloped as a tropical storm just southeast of Socorro Island. [10] During the afternoon of September 15, the storm tracked northwestward, moving between a mid-level ridge over northern Mexico and a mid-level low to its northwest, and attained sustained winds of 65 mph (100 km/h). [11] Later that day, however, a weakening trend began as Mario moved into cooler waters. [12] The storm weakened into a tropical depression on the afternoon of September 16, about 495 mi (800 km) west of the southern point of the Baja California peninsula, [13] and later degenerated into a remnant low. [14]

Preparations and impact

Tropical Storm Mario (2025)
Mario 2025-09-15 2056Z.jpg

Mexico

Prior to the storm approaching, a tropical storm watch was issued for Michoacan. [15] Flooding was reported in Acapulco. [16] The outer rain bands from the system also triggered heavy flash flooding in Baja California Sur. Several homes, vehicles, and roads were damaged by floodwaters. [17] In San Ignacio, a 37-year-old man was electrocuted during the passage of the storm. [18]

United States

Before the storm, parts of the Southwestern United States were placed under a slight risk of excessive rainfall. [19] The remnants of Mario prompted flood and flash flood warnings throughout Central and Southern California. Thunderstorms were also reported, with over nine thousand lightning strikes recorded. Heavy rainfall was also recorded in the state, with precipitation peaking at 4.14 in (105 mm) at Running Springs. [20] [21] Near Forest Falls, 1.77 in (45 mm) of rain fell in a single hour. [22] At San Diego, the rainfall total was 0.45 in (11 mm), well above the monthly average and pushing September to its seventh highest rainfall total. [23] In Barstow, floodwaters swept away a vehicle, killing a toddler. [24] Two others were injured in a seven vehicle pileup on Interstate 10. [25] Across California, heavy rain triggered numerous landslides, leaving several vehicles stranded. [26] This was particuarly severe in areas such as Oak Glen, which was still recovering from the El Dorado Fire. [27] Ten people required rescue after becoming stranded on California State Route 38 in the San Bernardino Mountains. [23] At Death Valley National Park, several roads were closed and there was severe flooding in the park, with a quarter of the park's annual precipitation falling during the storm. [28] [29] Over 7,000 customers lost power in Imperial County alone. [30] However, the rains were noted to have slightly reduced the fire risk in the region. [31] Further north in the Central Valley, 0.81 in (21 mm) of rain poured down in Fresno. [32]

Rainfall at Harry Reid International Airport in Las Vegas reached 0.24 inches (6.1 mm), the wettest day at the airport since May 6. [33] [34] Locally heavy rainfall was recorded in the northern part of the state, but was not universal across the area. [35] Rainfall was also recorded in Arizona, peaking at 0.3 in (7.6 mm) in Tempe. [36]

Aftermath

A local emergency was declared in Imperial County in the aftermath of the storms. [37] A shelter was also opened in Calexico. [30] Congressmen Raul Ruiz visited the Imperial Valley to look at the damage the storm caused in the aftermath. [38] In addition, Caltrans launched a $9.7 million project to restore California State Route 38 through the San Bernardino National Forest. [39]

References

  1. ↑ Papin, Philippe (September 8, 2025). Tropical Weather Outlook (Report). Miami Florida: National Hurricane Center. Retrieved September 10, 2025.
  2. ↑ Jelsema, Jon (September 10, 2025). Tropical Weather Outlook (Report). Miami Florida: National Hurricane Center. Retrieved September 10, 2025.
  3. ↑ Bucci, Lisa; Pasch, Richard (September 11, 2025). Tropical Depression Thirteen-E Discussion Number 1 (Report). Miami, Florida: National Hurricane Center. Retrieved September 11, 2025.
  4. ↑ Berg, Robbie (September 12, 2025). Tropical Storm Mario Discussion Number 4 (Report). Miami, Florida: National Hurricane Center. Retrieved September 12, 2025.
  5. ↑ "https://www.independent.co.uk/news/world/americas/mexico-pacific-coast-storm-mario-b2825542.html". The Independent. September 12, 2025. Retrieved October 16, 2025.{{cite news}}: External link in |title= (help)
  6. ↑ https://www.usatoday.com/story/news/weather/2025/09/12/tropical-storm-mario-path-tracker-spaghetti-models/86119808007/#
  7. ↑ Beven, Jack (September 12, 2025). Tropical Depression Mario Discussion Number 6 (Report). Miami, Florida: National Hurricane Center. Retrieved September 12, 2025.
  8. ↑ Reinhart, Brad (September 13, 2025). Remnants of Mario Special Discussion Number 7 (Report). Miami, Florida: National Hurricane Center. Retrieved September 13, 2025.
  9. ↑ Beven, Jack (September 13, 2025). Tropical Weather Outlook (Report). Miami Florida: National Hurricane Center. Retrieved September 14, 2025.
  10. ↑ Papin, Philippe (September 14, 2025). Tropical Storm Mario Discussion Number 8 (Report). Miami, Florida: National Hurricane Center. Retrieved September 14, 2025.
  11. ↑ Blake, Eric; Putnam, Bryan (September 15, 2025). Tropical Storm Mario Discussion Number 13 (Report). Miami, Florida: National Hurricane Center. Retrieved September 15, 2025.
  12. ↑ Pasch, Richard (September 15, 2025). Tropical Storm Mario Discussion Number 14 (Report). Miami, Florida: National Hurricane Center. Retrieved September 15, 2025.
  13. ↑ Chenard, Marc; Blake, Eric (September 16, 2025). Tropical Depression Mario Advisory Number 17 (Report). Miami, Florida: National Hurricane Center. Retrieved September 16, 2025.
  14. ↑ Hagen, Andrew (September 16, 2025). Post-Tropical Cyclone Mario Discussion Number 18 (Report). Miami, Florida: National Hurricane Center. Retrieved September 16, 2025.
  15. ↑ "Tropical Storm Mario brings wind, rain and heavy waves to southwest Mexico". Mexico News Daily. September 12, 2025. Retrieved October 14, 2025.
  16. ↑ Armas, Yamel (September 12, 2025). "Intensa lluvia deja inundaciones en varias zonas de Acapulco". Quadratín Guerrero (in Spanish). Retrieved September 12, 2025.
  17. ↑ "Weekly Cat Report Review of Global Catastrophe Activity September 19, 2025" (PDF). September 19, 2025. Retrieved September 19, 2025.
  18. ↑ "Hombre de 37 años fallece electrocutado en Baja California Sur durante tormenta "Mario"". San Diego Red via Yahoo News (in Spanish). 2025-09-17. Retrieved 2025-10-14.
  19. ↑ "Flooding from post-tropical Mario prompts water rescues, mud and debris flows in San Bernardino County, California". The Watchers. September 19, 2025. Retrieved October 15, 2025.
  20. ↑ "Remnants of Mario trigger deadly flash flooding, mudslides as rain surged across Southern California". Fox Weather. September 17, 2025. Retrieved October 14, 2025.
  21. ↑ Young, Ophelia (September 18, 2025). "How remnants from Tropical Storm Mario are impacting California weather". KCRA-TV . Retrieved September 18, 2025.
  22. ↑ Dolce, Chris (September 19, 2025). "Mudslides damage homes, bury roads and cars in Southern California". CNN . Retrieved October 15, 2025.
  23. 1 2 "More unseasonable rain eyes California's Central Valley following deadly flash flooding from Mario's remnants". No. Fox Weather. Fox Weather. September 22, 2025. Retrieved October 15, 2025.
  24. ↑ Dennis Romero (September 19, 2025). "2-year-old who was swept away by California floodwaters is found dead". NBC News. Retrieved September 19, 2025.
  25. ↑ "Heavy rains from remnants of Tropical Storm Mario batter Coachella Valley". KESQ. September 18, 2025. Retrieved October 15, 2025.
  26. ↑ Wulfeck, Andrew (2025-09-17). "Remnants of Mario trigger mudslides as rain surges across Southern California, Southwest US". FOX Weather. Retrieved 2025-09-20.
  27. ↑ "Map: Where the Southern California mudslides and flooding are". Mercury News. September 19, 2025. Retrieved October 16, 2025.
  28. ↑ "Remnants of Tropical Storm Mario Closed Roads in Death Valley National Park". NPS.gov. September 19, 2025. Retrieved October 14, 2025.
  29. ↑ "Remnants of Tropical Storm Mario close roads in Death Valley National Park". Las Vegas Review Journal. October 12, 2025. Retrieved October 12, 2025.
  30. 1 2 "Tropical Storm Mario Leaves 7,000 Without Power at Its Height". Calexico Chronicle. September 23, 2025. Retrieved October 14, 2025.
  31. ↑ "Rains are soaking Los Angeles for the first time in months. Is it enough to reduce wildfire risks?". LA Times. September 18, 2025. Retrieved October 16, 2025.
  32. ↑ "Mario's ghost unloads rain, sets off flash flooding in Southern California, southwestern US". AccuWeather. September 20, 2025. Retrieved October 15, 2025.
  33. ↑ Argier, Sam (September 18, 2025). "Wettest day in months for Las Vegas". KVVU-TV . Retrieved September 18, 2025.
  34. ↑ "Dry streak ends: Mario's remnants soak Las Vegas Valley". Las Vegas Review Journal. September 18, 2025. Retrieved October 15, 2025.
  35. ↑ "Rain reports and why some got more than others". 2News Nevada. September 20, 2025. Retrieved October 15, 2025.
  36. ↑ "Isolated showers hit Phoenix as remnants of tropical storm move into Arizona". AZ Family. September 19, 2025. Retrieved October 15, 2025.
  37. ↑ "IID declares local emergency in wake of Tropical Storm Mario, seeks state disaster aid". IV Press Online. October 1, 2025. Retrieved October 14, 2025.
  38. ↑ "Congressman Raul Ruiz sees impact of Tropical Storm Mario in Imperial Valley". KYMA. September 25, 2025. Retrieved October 15, 2025.
  39. ↑ "Highway 38 Remains Closed and Emergency Repairs are Underway". KBHR Big Bear News. October 14, 2025. Retrieved October 15, 2025.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.