if CLIENT then
    tornado = {
        position = Vector(41.5240, -2247.3965, -11035.9688),
        direction = Vector(0, 0, 1),
    }

        local function calc_velocity(particle)
            particle:SetVelocity(particle:GetVelocity()+VectorRand()*10)
        end

    tornado.smoke =
    {
        "particle/smokesprites_0001",
        "particle/smokesprites_0002",
        "particle/smokesprites_0003",
        "particle/smokesprites_0004",
        "particle/smokesprites_0005",
        "particle/smokesprites_0006",
        "particle/smokesprites_0007",
        "particle/smokesprites_0008",
        "particle/smokesprites_0009",
        "particle/smokesprites_0010",
        "particle/smokesprites_0012",
        "particle/smokesprites_0013",
        "particle/smokesprites_0014",
        "particle/smokesprites_0015",
        "particle/smokesprites_0016"
    }

    local emitter = ParticleEmitter(EyePos())

    local function particle_think(particle)
        calc_velocity(particle)

                particle:SetNextThink(CurTime()+0.1)
                return particle
    end

    hook.Add("Think", "tornado", function()

        local particle = emitter:Add(table.Random(tornado.smoke), tornado.position)

                --particle_think(particle) -- init

        particle:SetDieTime(3)
        particle:SetLifeTime(0) -- ???

        particle:SetStartSize(50)
        particle:SetEndSize(50)

        particle:SetStartAlpha(255)
        particle:SetEndAlpha(0)

        particle:SetThinkFunction(particle_think)
                particle:SetNextThink(CurTime()+0.1)

    end)
end