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depressions (<34 knots) 7 (3) 1 (5) 1 (1) 0 (0) 9 (9) Tropical storms (34-63 knots) 11 (7) 8 (9) 8 (7) 4 (3) 31 (26) Hurricanes/typhoons (>63 knots) 13 (19) 13 (17) 7 (4) 1 (2) 34 (42) Total 31 (29) 22 (31) 16 (12) 5 (5) 74 (77) Categories assigned based on 1-minute averaged winds Basin name

, 85 knots Track forecast errors were low for Francine. Gordon (07L) 11-17 September 1004 mb, 40 knots Track forecast errors were mixed for this storm. Helene (09L) 24-27 September 938 mb, 120 knots Track forecast errors were low and skill scores very high for forecasts for Hurricane Helene

(12) 3(4) 21(39) Hurricanes/typhoons (>63 knots) 11(15) 16(9) 6(2) 2(3) 35(29) Total 24(34) 23(21) 9(15) 5(7) 60(77) Categories assigned based on 1-minute averaged winds Basin name abbreviations: NWP : North-west Pacific (west of 180° E) NEP : North-east Pacific (east of 180° E) NAT : North Atlantic

is a tropical cyclone with mean wind speeds of at least 39 m.p.h. The terms hurricane and typhoon are region-specific names for strong tropical cyclones with wind speeds more than 73 m.p.h. The number of tropical storms forming over the North Atlantic is influenced by sea surface temperatures (SST), over

progressed northwards over Britain from Cornwall to the Yorkshire Coast and the strongest winds in the system developed as a rather narrow stream from the N or NNE over the Irish Sea. The winds reached hurricane force 12 on the Beaufort Scale and were estimated at well over 100mph. Wind speeds recorded

and Tuesday had a different origin as it developed from a hurricane in the tropical Atlantic. Therefore, Ophelia’s original name was continued rather than using the next predetermined name from the UK and Ireland’s storm-naming process. You can find out the current forecast in your area using our forecast

are strengthening further north in the western North Pacific Ocean region. Over the United States, tropical cyclones (known locally as Hurricanes) progress slower over the country compared the early 20th century. The mechanics of tropical cyclones and how they interact with our changing climate

in the northern hemisphere (clockwise in the southern hemisphere). A tropical storm is a tropical cyclone with mean wind speeds of at least 39 mph The terms hurricane and typhoon are region-specific names for strong tropical cyclones with wind speeds of more than 73 mph The North Atlantic tropical storm

the year for some of its more notable weather events. Events like ex-hurricane Ophelia, which in October brought high winds and disruption to parts of Ireland and the UK, and memorably for some drew up dust from the Sahara and smoke from the wildfires in Iberia, giving us the appearance of sunset

as a storm in the east Pacific, but developed into a strong Hurricane as it neared and crossed the Dateline into the western Pacific. Track forecast errors were near to or below last season's average and skill scores against CLIPER were high. Hernan (08E) 26-29 July 65 knots Track forecast errors