The 2025 season

Tropical Storm Mario (2025)

Tropical Storm Mario peaked at 55 kt in the Eastern Pacific between September 11, 2025 and September 18, 2025, with a lowest pressure of 994 mb. It killed 1 people in the United States, by the National Weather Service’s record.

Track and intensity

The whole track of Tropical Storm Mario, colored by strength, with the other storms of the 2025 season in the same basin behind it, and its wind and pressure hour by hour. Every fix is in the track table below.

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The storm

Basin
Eastern Pacific
Dates
September 11, 2025 to September 18, 2025
Peak strength
Tropical Storm, 55 kt (63 mph)
Lowest pressure
994 mb (29.35 inHg)
Landfall
No; closest approach 44 km (27 mi)
Accumulated cyclone energy
2.2
Tropical-storm-force wind reached
40 nmi (74 km, 46 mi) from the center at its widest
Eyewall radius at its peak
15 nmi (28 km, 17 mi)
Overall size
180 nmi (333 km, 207 mi) to the outermost closed isobar
Peak gust in the best track
65 kt (75 mph)
Fastest the center moved
15 kt (17 mph)
Identifier
EP132025

Deaths and damage

The sources count different things and are not added together.

National Hurricane Center

0 direct deathsnone recorded in the United States

The season table in NHC’s report archive, final report. Direct deaths are those caused by the storm’s own wind, water or surge, anywhere in the world.

NOAA Storm Events

1 deaths (1 direct, 0 indirect)$61,000

What National Weather Service offices recorded county by county in 2 states and marine areas, in the United States only. Property and crop damage as each office estimated it, which is not a national loss total.

In the United States

NOAA’s Storm Events database, the record National Weather Service offices compile months after a storm, as compiled August 2026.

Deaths
1 (1 direct, 0 indirect)
Injuries
1
Property damage
$61,000
Crop damage
none recorded
Events recorded
10 in 2 reports from 2 states and marine areas

State by state

State or marine areaDeathsInjuriesDamageEvents
California11$56,0009
Nevada00$5,0001

What was recorded

7 flash flood, 1 flood, 1 hail, 1 thunderstorm wind.

Wind reports

The strongest winds National Weather Service offices recorded with this storm. An estimated figure is a forecaster’s judgment from the damage, not an instrument reading.

WindHowWhereStateTime (UTC)
35 kt (40 mph)Estimated4.1 WNW of LAS VEGAS N AIR TERMNevadaSep 18, 19:30

What forecast offices wrote

From the Storm Events narratives, unedited.

There were two feet of standing water at the intersection of Highways 190 and 127, water and debris over Highway 190 at Furnace Creek, and the following roads were closed: Badwater Road from Jubilee Road to Highway 190, all of West Side Road, and all of Twenty Mule Team Road.

Inyo, California · Flash Flood · Sep 19, 08:00 UTC

Flash flooding on Main Street between Lenwood Road and Sweeten Lane swept away a car, killing a two-year old boy and injuring his father.

San Bernardino, California · Flash Flood · Sep 20, 02:12 UTC

Track

Time (UTC)PositionWindPressureStatus
Sep 11, 00:0014.0N 97.9W25 kt1009 mbLow
Sep 11, 06:0014.7N 98.0W25 kt1009 mbTropical depression
Sep 11, 12:0015.3N 98.1W30 kt1008 mbTropical depression
Sep 11, 18:0015.5N 98.3W30 kt1007 mbTropical depression
Sep 12, 00:0016.0N 99.1W35 kt1006 mbTropical storm
Sep 12, 06:0016.5N 100.2W35 kt1006 mbTropical storm
Sep 12, 12:0017.0N 101.4W35 kt1006 mbTropical storm
Sep 12, 18:0017.3N 102.5W30 kt1007 mbTropical depression
Sep 13, 00:0017.8N 104.0W25 kt1009 mbDisturbance
Sep 13, 06:0018.3N 105.4W25 kt1009 mbDisturbance
Sep 13, 12:0018.5N 106.6W25 kt1009 mbLow
Sep 13, 18:0018.4N 107.6W30 kt1008 mbLow
Sep 14, 00:0018.1N 108.4W30 kt1008 mbLow
Sep 14, 06:0018.1N 109.1W30 kt1007 mbTropical depression
Sep 14, 12:0018.4N 109.7W35 kt1005 mbTropical storm
Sep 14, 18:0018.7N 110.3W40 kt1003 mbTropical storm
Sep 15, 00:0019.1N 111.0W45 kt1000 mbTropical storm
Sep 15, 06:0019.4N 111.8W50 kt996 mbTropical storm
Sep 15, 12:0019.9N 112.8W55 kt994 mbTropical storm
Sep 15, 18:0020.6N 113.9W55 kt994 mbTropical storm
Sep 16, 00:0021.1N 114.7W50 kt996 mbTropical storm
Sep 16, 06:0021.6N 115.5W45 kt1000 mbTropical storm
Sep 16, 12:0022.0N 116.3W35 kt1003 mbLow
Sep 16, 18:0022.6N 117.3W30 kt1004 mbLow
Sep 17, 00:0023.3N 118.0W25 kt1006 mbLow
Sep 17, 06:0023.9N 118.6W25 kt1008 mbLow
Sep 17, 12:0024.5N 119.1W20 kt1009 mbLow
Sep 17, 18:0024.8N 119.4W20 kt1010 mbLow
Sep 18, 00:0024.9N 119.5W15 kt1010 mbLow
Sep 18, 06:0025.0N 119.6W15 kt1010 mbLow

Other Eastern Pacific storms of 2025

What this means

A best track is the record a warning agency settles on after the storm, not what it said at the time: position, maximum sustained wind and central pressure every six hours, revised against every observation that came in later. Category is the Saffir-Simpson scale, which runs from Category 1 at 64 kt to Category 5 at 137 kt and reads wind only, so it says nothing about surge or rain. Accumulated cyclone energy adds up the square of the wind through the storm's life, so it counts strength and duration together.

Sources

Storm history from NOAA NCEI’s International Best Track Archive for Climate Stewardship (IBTrACS), which merges the official best track of every warning agency. Live storms, cones, watches and warnings from the National Hurricane Center and the Central Pacific Hurricane Center. Archived radar from NOAA’s Level II archive.