Observed and Forecast Tracks: Northern Hemisphere 2011
All tropical cyclones in the northern hemisphere season in 2011 are listed below including details of their start and end dates and maximum sustained wind (MSW). Qualitative comments are included on the performance of the Met Office global model in predicting the track of each tropical cyclone. Click on the name of the tropical cyclone to see a chart of the observed track and forecast tracks from the Met Office global model. Verification statistics on each tropical cyclone are available upon request from tropical_cyclones@metoffice.gov.uk. At the end of the season a verification report on the performance of the Met Office global model will be published.
| Name & ID | Start & end dates | 1-/10-minute MSW | Comments on Met Office global model forecasts |
|---|---|---|---|
| 01W | 02-03 April | 30/- knots | 01W did not attain tropical storm status and no forecasts were verified. |
| 02W | 05-06 April | 30/- knots | 02W did not attain tropical storm status and no forecasts were verified. |
North-West Pacific observed tracks in 2011
North-West Pacific tropical
cyclone names
| Name & ID | Start & end dates | 1-minute MSW | Comments on Met Office global model forecasts |
|---|
| Name & ID | Start & end dates | 1-minute MSW | Comments on Met Office global model forecasts |
|---|
North-east Pacific tropical cyclone names
Central North Pacific tropical cyclone names
| Name & ID | Start & end dates | 1-minute MSW | Comments on Met Office global model forecasts |
|---|
North Atlantic tropical
cyclone names
| Name & ID | Start & end dates | 1-/10-minute MSW | Comments on Met Office global model forecasts |
|---|
North Indian tropical cyclone
names
Note on estimated wind speeds
1-minute MSW: Maximum sustained wind (knots) averaged over 1 minute (JTWC Hawaii, NHC Miami, CPHC Hawaii)
10-minute MSW: Maximum sustained wind (knots) averaged over 10 minutes (JMA
Japan, IMD New Delhi)
Note: Although 1-minute average winds should be stronger than 10-minute average,
this may not be the case here since estimates are obtained from different warning
centres.
| Tropical Depression | Less than 35 knots |
| Tropical Storm | 35-60 knots |
| Hurricane/Typhoon | 65-95 knots |
| Major Hurricane/Typhoon | 100 knots and above |
