1. UNCLASSIFIED OP GRITROCK SIERRA LEONE MET ASSESSMENT Monday 6 th April 2015

2. UNCLASSIFIED 051400 Z SATELLITE IMAGE Valid at Commentary Convective cloud across the coastal fringe and south. Thunderstorms across the neighbouring country (crosses indicated recent thunderstorm activity).

3. Forecast Valid: 0600 Z to 2359 Z Fronts / boundaries valid at 1200Z Issued by the JOMOC Sierra Leone Coastal (including FREETOWN) 0600-1200 Z1200-1800 Z1800-2359 ZRotary C/V Airlift Operations C/V Trafficability Personnel T Inland SL 0600-1200 Z1200-1800 Z1800-2359 ZRotary C/V TS TS C/V Trafficability TS TS C/V Personnel T / R R Maritime/Amphibious 0600-1200 Z1200-1800 Z1800-2359 Z Sea and Swell Wind/Visibility V V Personnel General 0600 Z 1200 Z 1800 Z 2400 ZIllumination Moon/Sunrise/set Sunrise: 060648 Z Sunset: 061903 Z Moonrise: 062048 Z Moonset: 070854 Z Min/Max mlx between ECT and MCT Min/Time: 1.46 (062005-2045 Z) Max/Time: 131 (070300 Z) > 100 at 070005-0525 Z Moon Phase Phase: 97% becoming 93% (Waning) FavourableMarginalUnfavourable Mist, low cloud and hill fog slow to lift through the morning. Becoming hot inland but cloud and showers developing, mainly away from the coastal fringe with the risk of some heavy/thundery showers most likely across the south and east. Showers/thunderstorms lingering into the night with mist/low cloud reforming. -1945 -1955 -2110 -2145

4. Meteorological Impact Matrix Sierra Leone 06/07 Darkness Tue 07 Daylight 07/08 Darkness Wed 08 Daylight 08/09 Darkness Thu 09 Daylight Rotary TS/V C/V C/V TS/V TS/V C/V C/V TS/V TS/V C/V C/V TS/V Airlift Operations TS/V C/V C/V TS/V TS/V C/V C/V TS/V TS/V C/V C/V TS/V Trafficability R (SE) Personnel T (inland) / R (SE) Maritime VVVVVV Tue 07 APR Low cloud and mist at first, with sunny spells developing. Risk of showers and thunderstorms developing during the afternoon and lingering into evening most likely across the south and east. Mist and low cloud reforming overnight. Thu 09 APRWed 08 APR Low cloud and mist at first, with sunny spells developing. Risk of showers and thunderstorms developing during the afternoon and lingering into evening most likely across the south and east. Mist and low cloud reforming overnight. Low cloud and mist at first, with sunny spells developing. Risk of showers and thunderstorms developing during the afternoon and lingering into evening most likely across the south and east. Mist and low cloud reforming overnight.

5. UNCLASSIFIED Joint Operations Meteorology and Oceanography Centre Web www.jomoc.net RLI SLI www.jomoc.r.mil.uk www.jomoc.s.mil.uk Phone 01923958100 Email NAVYOPS-JOMOCGROUP@mod.uk Address JOMOC, Northwood HQ, Middx, HA6 3HP, UK Please leave any feedback regarding this product in the space below and return to us at JOMOC and we will endeavour to use this feedback to improve our services to you: