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  • ALERT RANGES
  • RISKMAP HELP


    		•

    ALERT RANGES

    Alerts are issued for nine seperate sub-areas as indicated in the figure below.


    Depending on the magnitude of the meteorological parameters and the intensity of the associated events, three categories (colors) of alerts are introduced:
    .....1). Yellow (low level warning)
    .....2). Orange (medium level warning)
    .....3). Red (high level warning)

    The table shows the different threshold values for each parameter for the nine sub-areas.

    • Area 1
    • Area 2
    • Area 3
    • Area 4
    • Area 5
    • Area 6
    • Area 7
    • Area 8
    • Area 9

    Area 1 - Malta Inland
    Parameter
    Yellow
    Orange
    Red
    Wind Speed
    11 - 14 ms-1
    14 - 17 ms-1
    > 17 ms-1
    Rain
    8 - 15 mm / 6hr
    15 - 30 mm / 6hr
    > 30 mm / 6hr
    High Air Temperature
    36 - 38 ˚C
    38 - 41 ˚C
    > 41 ˚C
    Low Air Temperature
    4 - 6 ˚C
    2 - 4 ˚C
    < 2 ˚C
    Wave Height
    Not Applicable
    Not Applicable
    Not Applicable

    Area 2 - Maltese Waters
    Parameter
    Yellow
    Orange
    Red
    Wind Speed
    14 - 17 ms-1
    17 - 21 ms-1
    > 21 ms-1
    Rain
    8 - 15 mm / 6hr
    15 - 30 mm / 6hr
    > 30 mm / 6hr
    High Air Temperature
    34 - 37 ˚C
    37 - 39 ˚C
    > 39 ˚C
    Low Air Temperature
    5 -7 ˚C
    3 - 5 ˚C
    < 3 ˚C
    Wave Height
    2 - 3 m
    3 - 4.5 m
    > 4.5 m

    Area 3 - Western Malta Approaches
    Parameter
    Yellow
    Orange
    Red
    Wind Speed
    14 - 17 ms-1
    17 - 21 ms-1
    > 21 ms-1
    Rain
    7 - 14 mm / 6hr
    14 - 27 mm / 6hr
    > 27 mm / 6hr
    High Air Temperature
    32 - 34 ˚C
    34 - 36 ˚C
    > 36 ˚C
    Low Air Temperature
    6 - 9 ˚C
    4 - 6 ˚C
    < 4 ˚C
    Wave Height
    2 - 3 m
    3 - 4.5 m
    > 4.5 m

    Area 4 - Malta Channel
    Parameter
    Yellow
    Orange
    Red
    Wind Speed
    14 - 17 ms-1
    17 - 21 ms-1
    > 21 ms-1
    Rain
    11 - 21 mm / 6hr
    21 - 37 mm / 6hr
    > 37 mm / 6hr
    High Air Temperature
    33 - 36 ˚C
    36 - 39 ˚C
    > 39 ˚C
    Low Air Temperature
    6 - 8 ˚C
    3 - 6 ˚C
    < 3 ˚C
    Wave Height
    2 - 3 m
    3 - 4.5 m
    > 4.5 m

    Area 5 - Eastern Malta Approaches
    Parameter
    Yellow
    Orange
    Red
    Wind Speed
    17 - 21 ms-1
    21 -25 ms-1
    > 25 ms-1
    Rain
    13 - 21 mm / 6hr
    21 - 33 mm / 6hr
    > 33 mm / 6hr
    High Air Temperature
    33 - 36 ˚C
    36 - 38 ˚C
    > 38 ˚C
    Low Air Temperature
    6 - 9 ˚C
    3 - 6 ˚C
    < 3 ˚C
    Wave Height
    2 - 3 m
    3 - 4.5 m
    > 4.5 m

    Area 6 - Southern Malta Approaches
    Parameter
    Yellow
    Orange
    Red
    Wind Speed
    14 - 17 ms-1
    17 - 21 ms-1
    > 21 ms-1
    Rain
    8 - 12 mm / 6hr
    12 - 27 mm / 6hr
    > 27 mm / 6hr
    High Air Temperature
    33 - 35 ˚C
    35 - 39 ˚C
    > 39 ˚C
    Low Air Temperature
    6 - 9 ˚C
    3 - 6 ˚C
    < 3 ˚C
    Wave Height
    2 - 3 m
    3 - 4.5 m
    > 4.5 m

    Area 7 - Medina
    Parameter
    Yellow
    Orange
    Red
    Wind Speed
    14 - 17 ms-1
    17 - 21 ms-1
    > 21 ms-1
    Rain
    11 - 18 mm / 6hr
    18 - 33 mm / 6hr
    > 33 mm / 6hr
    High Air Temperature
    34 - 38 ˚C
    38 - 42 ˚C
    > 42 ˚C
    Low Air Temperature
    7 - 10 ˚C
    4 - 7 ˚C
    < 4 ˚C
    Wave Height
    2 - 3 m
    3 - 4.5 m
    > 4.5 m

    Area 8 - Central Mediterranean Basin
    Parameter
    Yellow
    Orange
    Red
    Wind Speed
    17 - 21 ms-1
    21 - 24 ms-1
    > 24 ms-1
    Rain
    5 - 12 mm / 6hr
    12 - 23 mm / 6hr
    > 23 mm / 6hr
    High Air Temperature
    30 - 32 ˚C
    32 - 34 ˚C
    > 34 ˚C
    Low Air Temperature
    6 - 9 ˚C
    3 - 6 ˚C
    < 3 ˚C
    Wave Height
    2 - 3 m
    3 - 4.5 m
    > 4.5 m

    Area 9 - Strait of Sicily
    Parameter
    Yellow
    Orange
    Red
    Wind Speed
    14 - 17 ms-1
    17 - 21 ms-1
    > 21 ms-1
    Rain
    5 - 12 mm / 6hr
    12 - 20 mm / 6hr
    > 20 mm / 6hr
    High Air Temperature
    32 - 34 ˚C
    34 - 37 ˚C
    > 37 ˚C
    Low Air Temperature
    5 - 7 ˚C
    3 - 5 ˚C
    < 3 ˚C
    Wave Height
    2 - 3 m
    3 - 4.5 m
    > 4.5 m

     
     

    RISKMAP HELP

    The Atmospheric Alert screen is divided into:
    .....- MAP AREA
    .....- ALERT DESCRIPTION LEGEND
    .....- TIME SELECTION BUTTONS

    1. Map Area
    The Map Area is divided into nine geographical sub-areas.

    Blue sub-areas are those for which there is no alert. Coloured sub-areas indicate the level of alert: yellow to orange to red in order of increasing intensity. The icon on the sub-area indicates whether the alert is for (a) strong winds, (b) heavy precipitation or (c) high/low air temperature. To view details on the alert click on the sub-area.

    2. Alert Description Legend
    The details of an alert are shown in the legend at the top of the screen.
    .....- The ‘Area ID:' gives the name of the chosen sub-area.
    .....- The ‘Alert for:' gives the parameter for which there is an alert
    .....- The ‘Valid for:' gives the date and time (in 3-hour slots) of the alert
    Successive alerts can be viewed by the time selection buttons

    3. Time Selection Buttons
    If there is more than one alert in a given sub-area the time selection buttons on the top right hand corner of the screen will be enabled.
    .....- The arrow pointing right switches to the next alert ahead in time.
    .....- The arrow pointing left switches to the previous alert in time.



    Disclaimer: IOI-MOC and the PO Unit is not officially responsible to issue warnings and this free service is conducted on a best effort basis. We give no warranty, express or implied, as to the accuracy, reliability, utility or completeness of this information. Alerts are issued by an online automated system on the basis of forecasts generated by numerical models. Alerts should only be considered as indicative of meteo-marine events; interpretation and analysis is left completely in the hands of the user. The user of this system assumes all responsibility and risk for the use of any information and data from this service.
    RISKMED- Weather Risk Reduction for the Mediterannean - A mediamax production