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NORTH ATLANTIC · 2017 SEASON

Hurricane Irma (2017)

Recorded track and intensity · 30 Aug 2017–13 Sept 2017

PEAK INTENSITYCategory 5
THE COMPLETE TRACKOpen in the explorer
IRMA: complete recorded track, 30 Aug 2017–13 Sept 2017Recorded track from 30 Aug 2017 to 13 Sept 2017. Colors show the recorded wind category. The highlighted position follows the replay controls.Atlantic Ocean30 Aug, 00:00 UTC31 Aug, 00:00 UTC1 Sep, 00:00 UTC2 Sep, 00:00 UTC3 Sep, 00:00 UTC4 Sep, 00:00 UTC5 Sep, 00:00 UTC6 Sep, 00:00 UTC7 Sep, 00:00 UTC8 Sep, 00:00 UTC9 Sep, 00:00 UTC10 Sep, 00:00 UTC11 Sep, 00:00 UTC12 Sep, 00:00 UTC13 Sep, 00:00 UTCPeak · Category 530 AUG13 SEP

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DepressionTropical stormCat 1Cat 2Cat 3Cat 4Cat 5Post-tropical
All times UTC

Wind speed & pressure

5 Sep, 18:00 UTC
Wind speed 155 ktPressure 926 hPa
0900809601601020kthPa30 Aug3 Sep8 Sep13 Sep

Forward speed & ACE

5 Sep, 18:00 UTC
Forward speed 14 ktCumulative ACE 27.13 10⁴ kt²
001032.52065kt10⁴ kt²30 Aug3 Sep8 Sep13 Sep

Hover or tap either graph to follow the track. The slider controls both graphs. Each line uses its matching colored axis.

Forward speed measures the center’s motion. ACE accumulates squared one-minute winds at 00, 06, 12 and 18 UTC during tropical or subtropical stages at 34 kt or above. Missing measurements remain gaps.

Maximum sustained wind155 kt

178 mph / 287 km/h

Minimum recorded pressure914 hPa

6 Sept 2017 · tropical stage

Recorded track duration14.5 days

Full archive record, including non-tropical stages if present

Approximate track distance7,710 km

Along the recorded center positions

STORM HISTORY

Track and intensity summary

Irma is listed in the North Atlantic basin for the 2017 season. Its archived track begins on 30 Aug 2017, 00:00 UTC at 16.1°N, 26.9°W. The first observation lists sustained winds of 30 knots. These dates describe the available observations, which may include stages before and after the tropical cyclone phase.

The first Category 5 observation appears on 5 Sept 2017, 09:00 UTC. The highest recorded tropical-stage one-minute sustained wind is 155 knots (178 mph / 287 km/h), first recorded on 5 Sept 2017, 18:00 UTC at 16.9°N, 59.2°W. The minimum recorded tropical-stage central pressure is 914 hPa on 6 Sept 2017, 03:00 UTC.

The full record spans 348 hours and approximately 7,710 kilometers along the recorded center positions. The last recorded position is 36.8°N, 90.1°W on 13 Sept 2017, 12:00 UTC. The final tropical-stage observation is earlier, on 12 Sept 2017, 03:00 UTC.

This summary is calculated from the NOAA IBTrACS archive. Category 5 describes the storm’s peak recorded wind intensity, not its intensity at landfall or the severity of impacts at any location. Landfall times, damage and casualties have not been independently reviewed for this page.

METHODOLOGY

Data sources and limitations

The map and summary are generated from NOAA’s IBTrACS v04r01 archive. Wind and category use US-agency records; minimum pressure is calculated during the tropical stage, with the archive’s pressure source retained. Category 5 refers to the Saffir–Simpson one-minute wind scale; local agencies may use different classifications. Coastlines use Natural Earth’s 1:10m land data.

Track distance adds great-circle distances between consecutive observations, excluding gaps over 12 hours. This track has no gaps over 12 hours. The line shows the storm’s center, not its size, rainfall or flood extent. Converted wind speeds are rounded to the nearest whole unit.

Archive retrieved

NOAA IBTrACS archive · Field documentation

Sources & methodology

Browse all Category 5 storm pages