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Irene — 2011

Peak intensity: Cat 3 (121 mph). Active August 21–August 30, 2011 (10 days). Made 9 landfalls.

On this page
  1. By the numbers
  2. Storm summary
  3. Track and observations
  4. Location-specific summary

By the numbers

Peak winds
121 mph
Cat 3
Min pressure
942 mb
at peak intensity
Observations
43
6-hourly fixes
ACE
18.8
accumulated cyclone energy

Storm summary

A plain-language narrative summary for this storm is on the way. In the meantime, the key statistics above and the full observation log below come directly from HURDAT2, NOAA's official Atlantic hurricane database. Where the National Hurricane Center has published a Tropical Cyclone Report, a link to the official PDF will appear here.

Track and observations

The complete observation log below lists all 43 fixes from HURDAT2 — position, status, wind, and pressure at each interval over the storm's lifetime.

Show first 12 observations
Time Status Lat / Lon Winds Pressure
2011-08-21 00:00Z TS 15.0, -59.0 52 mph 1006 mb
2011-08-21 06:00Z TS 16.0, -60.6 52 mph 1006 mb
2011-08-21 12:00Z TS 16.8, -62.2 52 mph 1005 mb
2011-08-21 18:00Z TS 17.5, -63.7 57 mph 999 mb
2011-08-21 23:00Z TSlandfall 17.8, -64.6 69 mph 993 mb
2011-08-22 00:00Z TS 17.9, -65.0 69 mph 993 mb
2011-08-22 05:25Z TSlandfall 18.1, -65.8 69 mph 990 mb
2011-08-22 06:00Z HU 18.2, -65.9 75 mph 990 mb
2011-08-22 12:00Z HU 18.9, -67.0 80 mph 989 mb
2011-08-22 18:00Z HU 19.3, -68.0 86 mph 988 mb
2011-08-23 00:00Z HU 19.7, -68.8 92 mph 981 mb
2011-08-23 06:00Z HU 20.1, -69.7 92 mph 978 mb
Source: HURDAT2 — NOAA Atlantic Hurricane Database, public domain. Storm ID: AL092011