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SOUTH INDIAN · 1999 SEASON

Cyclone Evrina:Frederic (1999)

Recorded track and intensity · 25 Mar 1999–10 Apr 1999

PEAK INTENSITYCategory 5
THE COMPLETE TRACKOpen in the explorer
EVRINA:FREDERIC: complete recorded track, 25 Mar 1999–10 Apr 1999Recorded track from 25 Mar 1999 to 10 Apr 1999. Colors show the recorded wind category. The highlighted position follows the replay controls.Indian Ocean25 Mar, 00:00 UTC26 Mar, 00:00 UTC27 Mar, 00:00 UTC28 Mar, 00:00 UTC29 Mar, 00:00 UTC30 Mar, 00:00 UTC31 Mar, 00:00 UTC1 Apr, 00:00 UTC2 Apr, 00:00 UTC3 Apr, 00:00 UTC4 Apr, 00:00 UTC5 Apr, 00:00 UTC6 Apr, 00:00 UTC7 Apr, 00:00 UTC8 Apr, 00:00 UTC9 Apr, 00:00 UTC10 Apr, 00:00 UTCPeak · Category 525 MAR10 APR

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

Wind speed & pressure

31 Mar, 12:00 UTC
Wind speed 140 ktPressure 920 hPa
0920809701601020kthPa25 Mar30 Mar5 Apr10 Apr

Forward speed & ACE

31 Mar, 12:00 UTC
Forward speed 8 ktCumulative ACE 14.19 10⁴ kt²
0010152030kt10⁴ kt²25 Mar30 Mar5 Apr10 Apr

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 observations make ACE partial. Missing measurements remain gaps.

Maximum sustained wind140 kt

161 mph / 259 km/h

Minimum recorded pressure920 hPa

31 Mar 1999 · tropical stage

Recorded track duration16.75 days

Full archive record, including non-tropical stages if present

Approximate track distance7,270 km

Along the recorded center positions

STORM HISTORY

Track and intensity summary

Evrina:Frederic is listed in the South Indian basin for the 1999 season. Its archived track begins on 25 Mar 1999, 00:00 UTC at 11.9°S, 119.3°E. The first observation lists sustained winds of 15 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 31 Mar 1999, 12:00 UTC. The highest recorded tropical-stage one-minute sustained wind is 140 knots (161 mph / 259 km/h), first recorded on 31 Mar 1999, 12:00 UTC at 17.6°S, 91.9°E. The minimum recorded tropical-stage central pressure is 920 hPa on 31 Mar 1999, 04:00 UTC.

The full record spans 402 hours and approximately 7,270 kilometers along the recorded center positions. The last recorded position is 22°S, 65.8°E on 10 Apr 1999, 18:00 UTC. The final tropical-stage observation is earlier, on 9 Apr 1999, 09:00 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

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