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The Weather Prediction Center

Domain 8. Southeast South America
Graphics use 1° GFS Model Output


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

ALGORITHM GFS 00Z GFS 12Z
Potential for severity and hail (Trial) - 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
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
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.
Idle
(NE South America)

Idle
(Central South America)
Idle
(NE South America)

Idle
(Central South America)

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: Thursday, 12-May-2022 19:51:38 UTC