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monsoon season. This call for research invites contributions that will advance understanding of the representation and predictability of monsoon extreme rainfall events at different scales, and their associated interactions and feedback. Timeline: Stage Target Times The deadline for submitting

. December average temperatures 6 o C above the long-term mean in England from the Midlands southwards, and 5 o C above the long-term mean elsewhere. Average seasonal temperatures 3 o C above the long-term mean across the UK. Compound months and seasons November to April Wet (rainfall 2.5 times

. Floating islands of plants in Loktak Lake Manipur India during monsoon season. Image: Shutterstock. Harnessing the extensive weather and climate scientific expertise of over 700 researchers from more than 50 institutes around the world, projects range from the development of solar radiation forecasts

‘Wet’ days: greater than the 1981-2010 90 th percentile daily precipitation ‘Windy’ days: greater than the 1981-2010 90 th percentile daily mean windspeed The thresholds are calculated separately by month and region, and the frequencies of exceedance averaged by nation and season. Based on UKCP18

events in Nepal Studying past extreme rainfall events in South Asia has highlighted the importance of the timing and location of monsoon rainfall. Extreme events often occur during years with high variability in monsoon rains, and not necessarily years with above average seasonal rainfall. Extreme

and the Environment, University of Oxford, UK Dry-to-wet transition Two-tier approach: (1) climatologial envelope when the transition should occur (2) dry-to-wet transition in each year/season (1) Gradient (x100) Filtered precipitation Filtered Precipitation (60-points second order Butterworth filter

the implementation of the new service will be shared through workshops to benefit other developing countries across Southern Africa, supporting the WMO’s ambition of a global rollout of IbF. WCSSP Southeast Asia The damage and loss of life caused by severe weather in Southeast Asia is a significant barrier

but probabilities of a wetter season than last year and of 10-year extremes are presented. A wetter season than 2018 is favoured in most boxes east of 30E and between 10N and 10S. Elsewhere a drier season than 2018 is likely in most grid boxes. Probabilities of a season drier than any in the past 10 years (2009

Forecasts for the north-east part of Brazil between 0° S to 10° S and east of 50° W for the February to May wet season.

The wet season is between February and May with considerable year-to-year and decade-to-decade variability. The forecasts are produced using a combination of dynamical forecast models and statistical predictions and include predictions of the most likely of five rainfall categories (very wet, wet

coast, but elsewhere in the UK, summer is typically the most thundery season. This variability means that maps showing thunderstorm frequency can differ depending on the period of record used. What causes lightning? Lightning is the precursor to thunder and forms within storm clouds through