Hurricane Miriam (2012)

Basin

Eastern Pacific

Dates

September 22, 2012 to October 2, 2012

Peak strength

Category 3, 105 kt (121 mph)

Lowest pressure

959 mb (28.32 inHg)

Landfall

No; closest approach 439 km (273 mi)

Accumulated cyclone energy

9.8

Tropical-storm-force wind reached

110 nmi (204 km, 127 mi) from the center at its widest

Hurricane-force wind reached

30 nmi (56 km, 35 mi) from the center at its widest

Eyewall radius at its peak

10 nmi (19 km, 12 mi)

Overall size

300 nmi (556 km, 345 mi) to the outermost closed isobar

Peak gust in the best track

130 kt (150 mph)

Fastest the center moved

11 kt (13 mph)

Identifier

EP132012

The sources count different things and are not added together.

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

Deaths

0 (0 direct, 0 indirect)

Injuries

1

Property damage

$759,200

Crop damage

none recorded

Events recorded

31 in 5 reports from 1 states and marine areas

State by state

What was recorded

13 thunderstorm wind, 9 flash flood, 6 heavy rain, 2 tornado, 1 funnel cloud.

2 tornadoes recorded in the United States, strongest first.

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.

From the Storm Events narratives, unedited.

Decaying thunderstorms located just south of a mesoscale convective vortex produced an intense downburst in extreme southwest Cottle County. A Texas Tech University West Texas Mesonet site located ten miles west-southwest of Paducah measured severe winds from 1725 CST to 1735 CST with a peak gust of 96 mph recorded at 1730 CST. Despite the ferocious winds, only one power pole was downed in the area. Although NWS Lubbock radar indicated only marginal storm intensities during this time, the high winds were deemed legitimate based on the fact that cable ties to the mesonet tower were snapped. Farther southeast, a NWS COOP observer about ten miles south of Paducah reported a couple large tree limbs had snapped and damaged a fence.

Cottle, Texas · Thunderstorm Wind · Sep 27, 00:30 UTC

A small EF-0 tornado was seen on video from a school campus in Sweet Home. The survey concluded that the small tornado began just down the road from the school on FM 531 and then traveled northwest hitting the school playground area at approximately 5:02 PM. The video showed the small tornado moving through the playground damaging the playground and the school gymnasium door. The tornado then moved northwest behind the school and into an open field behind a nearby church. The tornado crossed County Road 378 and produced some minor tree damage before dissipating near FM 318. Special thanks go out to Sweet Home Independent School District and KSAT-12 TV in San Antonio for providing information and video of this tornado event.

Lavaca, Texas · Tornado · Sep 29, 22:02 UTC

• Tropical Storm AlettaEastern Pacific · 2012Tropical Storm45 kt · 1000 mb
• Hurricane BudEastern Pacific · 2012Cat 3100 kt · 961 mb
• Hurricane CarlottaEastern Pacific · 2012Cat 295 kt · 973 mb
• Hurricane DanielEastern Pacific · 2012Cat 3100 kt · 961 mb
• Hurricane EmiliaEastern Pacific · 2012Cat 4120 kt · 945 mb
• Hurricane FabioEastern Pacific · 2012Cat 295 kt · 966 mb
• Hurricane GilmaEastern Pacific · 2012Cat 170 kt · 984 mb
• Tropical Storm HectorEastern Pacific · 2012Tropical Storm45 kt · 995 mb
• Hurricane IleanaEastern Pacific · 2012Cat 175 kt · 978 mb
• Tropical Storm JohnEastern Pacific · 2012Tropical Storm40 kt · 1000 mb
• Tropical Storm KristyEastern Pacific · 2012Tropical Storm50 kt · 998 mb
• Hurricane LaneEastern Pacific · 2012Cat 175 kt · 985 mb
• Tropical Storm NormanEastern Pacific · 2012Tropical Storm45 kt · 997 mb
• Tropical Storm OliviaEastern Pacific · 2012Tropical Storm50 kt · 997 mb
• Hurricane PaulEastern Pacific · 2012Cat 3105 kt · 959 mb
• Tropical Storm RosaEastern Pacific · 2012Tropical Storm45 kt · 1001 mb

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.

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.

• Tropical cyclone report, National Hurricane Center
• Every advisory and discussion NHC issued while it was live
• Best track as KMZ, National Hurricane Center