unclassified op gritrock sierra leone met assessment monday 27 july 2015
DESCRIPTION
Forecast Valid: 0600 Z to 2359 Z Fronts / boundaries valid at 1200Z Issued by the JOMOC Sierra Leone Coastal (including FREETOWN) Z Z ZRotary V / C TS / VTS / VTS / V / C Airlift Operations V / C TS / VTS / VTS / V / C Trafficability Locally wet groundWet ground Personnel RRR Inland SL Z Z ZRotary V / C TS / VTS / VTS / V C Trafficability Locally wet groundWet ground Personnel RR R Maritime/Amphibious Z Z Z Sea and Swell Wind/Visibility V TS / VTS / V Personnel RRR General 06 Z 12 Z 18 Z24 ZIllumination Moon/Sunrise/set Sunrise: 0644 Z Sunset: 1915 Z Moonrise: Z Moonset: Z Min/Max mlx between ECT and MCT Min/Time: 1.7 ( Z – Z) Max/Time: Z Moon Phase Phase: 79% becoming 87% (Waxing) FavourableMarginalUnfavourable Any lingering overnight heavy showers and storms initially affecting Sierra Leone will mostly die out or clear away W before daybreak, leaving areas of low cloud, haze and mist, which will mostly clear through the morning. However, an organised area of heavy showers and thunderstorms, with squally winds, will move W across the area during the morning and into the afternoon. Behind this, further showers and storms are likely to develop, lasting through the evening before decaying or clearing W overnight. More low cloud, haze and mist will develop overnight.TRANSCRIPT
UNCLASSIFIED
UNCLASSIFIED
OP GRITROCKSIERRA LEONE MET ASSESSMENT
Monday 27 July 2015
UNCLASSIFIED
261400 ZSATELLITE IMAGE Valid at
Note:Crosses indicate recent thunderstorm activity – red being from the last 10 minutes.
CommentaryLast night’s storms now well out to the W over the ocean.
New showers and storms have developed over the Guinea coast.
Showers and storms have developed over SE Guinea, and locally deep convection is also now developing over Sierra Leone, Liberia, inland N Guinea and NW Ivory Coast.
Extensive medium cloud over S Sierra Leone and to the SW, extending out over the ocean.
Forecast Valid: 0600 Z to 2359 ZFronts / boundaries valid at 1200Z
Issued by the JOMOCSierra Leone
Coastal (including Coastal (including FREETOWN)FREETOWN) 0600-1200 Z 1200-1800 Z 1800-2359 Z
RotaryRotary V / C TS / V TS / V TS / V / C
Airlift OperationsAirlift Operations V / C TS / V TS / V TS / V / C
TrafficabilityTrafficability Locally wet ground Wet ground Wet ground
PersonnelPersonnel R R R
Inland SLInland SL 0600-1200 Z 1200-1800 Z 1800-2359 Z
RotaryRotary V / C TS / V TS / V TS / V C
Trafficability Trafficability Locally wet ground Wet ground Wet ground
PersonnelPersonnel R R R
Maritime/Maritime/AmphibiousAmphibious
0600-1200 Z 1200-1800 Z 1800-2359 Z
Sea and SwellSea and SwellWind/VisibilityWind/Visibility V TS / V TS / V TS / V
PersonnelPersonnel R R R
GeneralGeneral 06 Z 12 Z 18 Z 24 Z
IlluminationIllumination
Moon/SunMoon/Sunrise/setrise/set
Sunrise: 0644 Z Sunset: 1915 ZMoonrise: 271541 Z Moonset: 280343 Z
Min/Max mlx between Min/Max mlx between ECT and MCT ECT and MCT
Min/Time: 1.7 (270300 Z – 270540 Z) Max/Time: 87 @ 272200 Z
Moon PhaseMoon Phase Phase: 79% becoming 87% (Waxing)
Favourable Marginal Unfavourable
Any lingering overnight heavy showers and storms initially affecting Sierra Leone will mostly die out or clear away W before daybreak, leaving areas of low cloud, haze and mist, which will mostly clear through the morning.
However, an organised area of heavy showers and thunderstorms, with squally winds, will move W across the area during the morning and into the afternoon. Behind this, further showers and storms are likely to develop, lasting through the evening before decaying or clearing W overnight.
More low cloud, haze and mist will develop overnight.
Meteorological Impact Matrix
Tue 28th JUL Thu 30th JUL
A similar day to Monday (27th) is expected.
Low cloud, haze and mist gradually clearing through the morning, along with any lingering overnight showers and storms. However, another large storm system is expected to move W across the area during the day, followed by scattered showers and storms, these lasting into the evening/night.
More low cloud, mist and haze forming overnight.
Sierra LeoneSierra Leone 28/0700-06Z
28/0706-12Z
28/0712-18Z
28/0718-00Z
29/0700-06Z
29/0706-12Z
29/0712-18Z
29/0718-00Z
30/0700-06Z
30/0706-12Z
30/0712-18Z
30/0718-00Z
RotaryRotary TS/V/C V/C TS/V TS/V TS/V TS/V/C V/C TS/V TS/V TS/V/C V/C TS/V TS/V
Airlift OperationsAirlift Operations TS/V/C V/C TS/V TS/V TS/V TS/V/C V/C TS/V TS/V TS/V/C V/C TS/V TS/V
TrafficabilityTrafficability Wet Wet Wet Wet Wet Wet Wet Wet Wet Wet Wet Wet
PersonnelPersonnel R R R R R R T T R R R R T T R R
MaritimeMaritime V V V V V V V V V V V V
Similar to Wednesday.
Wed 29th JUL
Low cloud, haze and mist gradually clearing through the morning, along with any lingering overnight showers and storms.
More showers and storms will develop through the afternoon and evening, possibly merging to form more organised systems, these lasting into the night before slowly decaying or clearing W.
Low cloud, haze and mist reforming overnight.
UNCLASSIFIED
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