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Domain 9: Central South America
Chile, Central and Northern Argentina, Uruguay, Paraguay and Southern Brazil
Graphics use 1° GFS Model Output


Terrain elevation in meters above sea level. Source: GFS0.25°(NOMADS-NOAA).

ALGORITHM GFS 00Z GFS 12Z
Identification of Surface Fronts - FRONT.CMD
Highlights the positions surface fronts based on horizontal gradients of thickness and dewpoint in the lower troposphere, and precipitable water to a lesser extent. If present, surface fronts are usually positioned in the warm edge of the gradient (thick black contours).
Idle
Idle
Potential for severity and hail - GR02T.CMD
GR02T highlights regions with the potential for severe weather using shades of color, and specifically, detects a potential for hail where colored boxes appear inside colored contours.
Idle
Idle
Potential for severity and hail - GR02.CMD
Highlights regions with the potential for severe convection, and specifically hail in Central South America. The potential increases when red (fuscia) contours appear with red (fuscia) boxes inside.
Idle
Idle
Enhanced GDI and flow - EGDI.CMD
Very similar to the GDI, the Enhanced GDI (EGDI) diagnoses the potential for convection and rainfall accumulations. Loops include low- and upper-tropospheric flow and other variables to evaluate if atmospheric dynamics are favorable for triggering and/or sustaining convection.
Being restored
Being restored

Note: These algorithms are only forecast tools, not official forecasts. For information on the algorithms, click on the red text.

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Page last modified: Wednesday, 06-Jan-2021 12:57:37 UTC