SOUTH AMERICA FORECAST DISCUSSION - INTERNATIONAL DESKS
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
239 PM EDT TUE JUL 16 2024

GFS DATA AT FTPPRD.NCEP.NOAA.GOV/PUB/DATA/NCCF/COM/GFS/PROD/

SOUTH AMERICAN FORECAST BULLETIN FOR 16 JUL 2024 AT 1845 UTC:

THE CONDITIONS OVER SOUTH AMERICA ARE EXPECTED TO REMAIN DRY OVER
THE NEXT SEVERAL DAYS. A HIGH PRESSURE SYSTEM IN THE MID TO UPPER
LEVELS IS LOCATED OVER EASTERN BRASIL AND EXTENDS INTO BOLIVIA AND
PARAGUAY. THIS WILL FAVOR THE DRY CONDITIONS IN THE REGION...WHILE
IN THE LOWER LEVELS THE TRADE WINDS ARE ADVECTING DRY AIR OVER
BRASIL. MOST OF THE HEAVIER PRECIPITATION IN TROPICAL SOUTH
AMERICA WILL REMAIN TO THE NORTH WITH THE PASSING OF EASTERLY AND
TROPICAL WAVES. THE HEAVIEST PRECIPITATION IS EXPECTED ON TUESDAY
IN SOUTHERN VENEZUELA WITH MAXIMA OF 20-35MM. ON WEDNESDAY AND
THURSDAY AMOUNTS ARE EXPECTED TO REMAIN BELOW 25MM IN THE
NORTHERN-MOST PORTION OF THE DOMAIN. 

IN THE SOUTHERN PORTION OF THE CONTINENT...SIMILAR DRY CONDITIONS
ARE EXPECTED. A POTENT HIGH PRESSURE SYSTEM IN THE LOWER LEVELS
OVER THE WESTERN ATLANTIC EXTENDS INTO ARGENTINA ON TUESDAY. A
WEAK UPPER LEVEL TROUGH IS LOCATED OVER THE CENTRAL REGION OF THE
CONTINENT BUT IT IS NOT EXPECTED TO PROVIDE ENHANCEMENT OVER THE
REGION. ON WEDNESDAY...A FRONTAL SYSTEM IS EXPECTED TO CROSS OVER
SOUTHERN CHILE INTO ARGENTINA WITH COLD AIR. ALTHOUGH THE AMOUNT
OF PRECIPITATION REMAINS LOW...CENTRAL TO SOUTHERN CHILE CAN
EXPECT MAXIMA OF 15-30MM WITH MOUNTAIN SNOW...AND THE
CENTRAL...WEST...AND NORTHWEST OF SANTA CRUZ IN ARGENTINA CAN
EXPECT MAXIMA OF 15MM WITH THE CHANCE OF SNOW. BY THURSDAY...THE
FRONT IS EXPECTED OVER CENTRAL CHILE AND ARGENTINA....WHERE THE
MOUNTAIN REGION BETWEEN METROPOLITAN AND O'HIGGINS IN CHILE CAN
EXPECT MAXIMA OF 15-20MM WITH A CHANCE OF SNOW RANGING FROM
05-10CM IN THE HIGHER ELEVATIONS. TO THE SOUTH...MOUNTAIN SNOW IS
EXPECTED FROM LOS RIOS INTO AYSEN...WHERE IT WILL TRANSITION TO
MOSTLY RAIN INTO MAGALLANES...WHERE EXPECT MAXIMA OF 20-35MM.

ACOSTA...(WPC)
PALAVECINO...(SMN-ARGENTINA)
SARABIA...(DMC-CHILE)