OP GRITROCK Monday 04th May 2015 SIERRA LEONE MET ASSESSMENT

SATELLITE IMAGE Valid at 031300 Z Commentary Remnants of last night’s deep convective activity now well out to the W/SW of Sierra Leone, over the ocean, and continuing to move W. Areas of medium and high cloud continue to stream E from these cells though, over Sierra Leone. Relatively shallow convection has developed over S parts of Sierra Leone, Liberia, parts of N and SE Guinea and Ivory Coast. Deeper convection, producing heavy showers and thunderstorms, will develop later today over Guinea and move W into Sierra Leone. Note: Any crosses indicate recent thunderstorm activity – red being from the last 10 minutes.

Coastal (including FREETOWN) Sierra Leone Forecast Valid: 0600 Z to 2359 Z Fronts / boundaries valid at 1200Z Issued by the JOMOC Inland SL 0600-1200 Z 1200-1800 Z 1800-2359 Z Rotary C/V TS / V Trafficability Wet/Damp ground Damp ground Wet ground Personnel T R Areas of heavy showers and thunderstorms moving W across many parts of the country during the early hours of the morning and gradually decaying, clearing into the ocean by mid-morning. Areas of low cloud, mist and haze developing behind the showers and storms, this clearing during the morning. Most parts then having a quieter spell with some sunshine, but further showers and storms developing to the N and E of Sierra Leone, over Guinea, during the afternoon and evening, these then moving W across Sierra Leone during the evening and overnight. Areas of low cloud, mist and haze redeveloping behind the showers and storms overnight. Coastal (including FREETOWN) 0600-1200 Z 1200-1800 Z 1800-2359 Z Rotary TS (RED), V/C (AMB) Airlift Operations Trafficability Wet/Damp ground Damp ground Personnel R T Maritime/ Amphibious 0600-1200 Z 1200-1800 Z 1800-2359 Z Sea and Swell Wind/Visibility V Personnel R Millilux levels are given using clear sky values, with no cultural light and given as upward illumination, and should only be used for situational awareness and not tactical flying. Illumination data is for the upcoming night. General 06 Z 12 Z 18 Z 24 Z Illumination Moon/Sun rise/set Sunrise: 040637 Z Sunset: 041903 Z Moonrise: 041934 Z Moonset: 050738 Z Min/Max mlx between ECT and MCT Min/Time: 14.4 ( at 041950 Z) Max/Time: 209 (050100 Z) (>100 TL 041935 Z and FM 042140 Z TL 050530 Z) Moon Phase Phase: 100 % becoming 99 % (Waning) Favourable Marginal Unfavourable

Meteorological Impact Matrix Sierra Leone Tue 05th MAY Wed 06th MAY Thu 7th MAY Areas of heavy showers and thunderstorms moving W across many parts of the country during the early hours of the morning, slowly decaying and clearing into the ocean by mid-morning. Areas of low cloud, mist and haze developing behind the showers and storms, this clearing during the morning. Most parts then having a quieter spell with some sunshine, but further showers and storms developing to the N and E of Sierra Leone during the afternoon and evening, over Guinea, these then moving W across Sierra Leone during the evening and overnight. Areas of low cloud, mist and haze redeveloping behind the showers and storms overnight. Similar to Tuesday. Similar to Wednesday. Meteorological Impact Matrix Sierra Leone 04/05 Darkness Tue 05 Daylight 05/06 Wed 06 06/07 Thu 07 Rotary TS/V/(AMB C) Airlift Operations Trafficability Wet Personnel R R T Maritime V/TS 4

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