Jump to content
  • Member Statistics

    17,502
    Total Members
    7,904
    Most Online
    Weathernoob335
    Newest Member
    Weathernoob335
    Joined

Why all the L's on SLA


 Share

Recommended Posts

In looking at today's NOAA Surface Analysis issued 1645Z Sat Jan 11 2020, there are six Ls notated on the front stretching from above NY down to the Gulf.

I am trying to learn something here.  Is there a reason / criteria for all of them?  I would think from the Iso countour that yea, that is all low pressure.  And in general, often I see on SLA the pressure system notated multiple times close to one another.  Must be a reason.

 

Jonathan

Link to comment
Share on other sites

  • 2 months later...

I often wonder the same thing - were you looking at the unified surface analysis?

I think that they put them any where that MSLP contours close - it may however be a contour level that's not plotted

besides front's, i also sometimes see many L's plotted in regions with very weak gradients - a relatively flat but undulating surface could have many places where contours close

it might also be be a because they see an area of convection on a satellite

i think it varies from forecaster to forecaster - some probably put more than others.., although i understand this is becoming automated, so it could be the computer that's doing it sometimes.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...