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SECURITE
WEATHER AND SEA BULLETIN ISSUED 17/AUG/2026 1200Z
DATE AND TIME UTC
PRESSURE HPA
WINDS BEAUFORT SCALE
WAVES HEIGHT METER
PART ONE WARNINGS
WARNING NR 537/2026
NEAR GALE/GALE WARNING
ISSUED AT 1400 FRI 14/AUG/2026
COASTAL AREA BETWEEN CHUI/RS AND LAGUNA/SC TO 300 NM
OFFSHORE STARTING AT 151200. WIND E/NE 7 WITH GUSTS 8.
VALID UNTIL 180000.
THIS WARNING REPLACES THE WARNING NR 531/2026.
WARNING NR 542/2026
NEAR GALE WARNING
ISSUED AT 1300 SUN 16/AUG/2026
OCEANIC AREA BETWEEN 29S049W, 31S043W, 26S038W, 23S042W
AND 24S045W. WIND E/NE 7 WITH GUSTS.
VALID UNTIL 181200.
THIS WARNING REPLACES THE WARNING NR 540/2026.
WARNING NR 544/2026
GALE WARNING
ISSUED AT 1300 SUN 16/AUG/2026
OCEANIC AREA BETWEEN 30S042W, 30S030W, 36S030W AND
36S048W. WIND NE/NW BACK TO NW/W, 8 WITH GUSTS.
VALID UNTIL 190000.
THIS WARNING REPLACES THE WARNING NR 541/2026.
WARNING NR 545/2026
GALE WARNING
ISSUED AT 1300 SUN 16/AUG/2026
OCEANIC AREA BETWEEN 30S030W, 30S020W, 36S020W AND
36S030W STARTING AT 181200. WIND NW/W 8 WITH GUSTS.
VALID UNTIL 200000.
WARNING NR 546/2026
VERY ROUGH SEA WARNING
ISSUED AT 1300 SUN 16/AUG/2026
OCEANIC AREA BETWEEN 36S035W, 36S020W, 30S020W AND
30S030W STARTING AT 181200. WAVES NW/W 4.0/5.0 .
VALID UNTIL 201200.
WARNING NR 547/2026
LOW VISIBILITY WARNING
ISSUED AT 1300 MON 17/AUG/2026
COASTAL AREA BETWEEN ITAJAI (SC) AND SANTOS (SP) TO 50
NM OFFSHORE STARTING AT 180300. PATCHES OF FOG.
VALID UNTIL 181500.
PART TWO WEATHER ANALYSIS AT 171200
HIGH 1034 31S030W. TROUGH 25S058W, 28S056W AND 31S049W.
C-FRONT 34S052W AND 35S048W MOVING TO E/NE AT 5 KT.
FRENTE FRIA 15S021W AND 16S019W. TROPICAL WAVE 19N018W,
12N019W AND 04N018W MOVING TO W AT 10/15 KT. TROPICAL
WAVE 17N036W, 12N037W AND 04N036W MOVING TO W AT 15/20
KT. TROPICAL WAVE 20N057W, 11N058W AND 03N056W MOVING
TO W AT 15 KT. INTERTROPICAL CONVERGENCE ZONE (ITCZ)
09N020W, 07N030W, 09N040W AND 08N050W.
PART THREE WEATHER FCST VALID FM 180000 TO 190000
AREA ALFA (FM CHUI TO LAGUNA)
OCNL HVY SHWRS AND ISOL THUNDERSTORMS S OF 31S. WIND
NE/NW 5/6 WITH GUSTS 7 BACK S/SE 3/4. WAVES E/NE
1.5/2.5. VIS MOD/POOR DURING SHWRS.
AREA BRAVO (FM LAGUNA TO ARRAIAL DO CABO OCEANIC)
WIND NE/N 5/6 WITH GUSTS 7/8. WAVES SE/NE 1.5/2.5. VIS
GOOD.
AREA CHARLIE (FM LAGUNA TO ARRAIAL DO CABO SHORE)
MIST/FOG NEAR THE COAST S OF SANTOS/SP. WIND NE/NW 2/3.
WAVES E/NE 1.5/2.5. VIS POOR/VERY POOR DURING MIST/FOG.
AREA DELTA (FM ARRAIAL DO CABO TO CARAVELAS)
WIND E/NE 3/5. WAVES S/SE 1.5/2.0. VIS GOOD.
AREA ECHO (FM CARAVELAS TO SALVADOR)
ISOL SHWRS N OF 15S. WIND SE/E 3/5 WITH GUSTS 6/7 E OF
035W. WAVES SW/SE 1.5/2.5. VIS MOD DURING SHWRS.
AREA FOXTROT (FM SALVADOR TO NATAL)
ISOL SHWRS. WIND SE/E 4/5, WITH GUSTS 6/7 S OF 10S.
WAVES SW/SE 1.5/3.0. VIS MOD DURING SHWRS.
AREA GOLF (FM NATAL TO SAO LUIS)
ISOL SHWRS. WIND SE/NE 4/6, WITH GUSTS 7 NEAR THE
COAST. WAVES SE/NE 1.5/2.5. VIS MOD DURING SHWRS.
AREA HOTEL (FM SAO LUIS TO OIAPOQUE)
WIND SE/NE 3/4 WITH GUSTS. WAVES SE/NE 1.0/2.0. VIS
GOOD.
SOUTH OCEANIC AREA
S OF 30S W OF 030W
OCNL HVY SHWRS AND ISOL THUNDERSTORMS S OF 33S. WIND
N/NW 6/7 WITH GUSTS 8 BACK SW/S 3/4. WAVES NE/NW
2.5/3.5. VIS MOD/POOR DURING SHWRS.
S OF 30S E OF 030W
WIND NW/W 3/4 BECMG 6/7 WITH GUSTS 8/9. WAVES W/SW
1.5/2.0. VIS GOOD.
BETWEEN 30S AND 25S
WIND SE/NE 3/5. WAVES SW/S 1.5/2.5. VIS GOOD.
N OF 25S
ISOL SHWRS E OF 030W. WIND SE/E 4/6 WITH GUSTS 7. WAVES
SW/SE 2.0/3.5 BECMG S/SE 2.0/3.0. VIS MOD DURING SHWRS.
NORTH OCEANIC AREA
ISOL SHWRS. WIND S/SE 4/5 WITH GUSTS 6/7 S OF 10S.
WAVES SW/SE 1.5/2.5. VIS MOD DURING SHWRS.
WEATHER FCST VALID FM 190000 TO 200000
AREA ALFA (FM CHUI TO LAGUNA)
WIND SE/NE 3/4. WAVES SE/NE 1.0/2.0.
AREA BRAVO (FM LAGUNA TO ARRAIAL DO CABO OCEANIC)
WIND NE/NW BACK SE/NE, 3/4. WAVES NE/N 1.5/2.0.
AREA CHARLIE (FM LAGUNA TO ARRAIAL DO CABO SHORE)
WIND SE/NE 2/3. WAVES E/NE 0.5/1.5.
AREA DELTA (FM ARRAIAL DO CABO TO CARAVELAS)
WIND E/NE 3/5. WAVES E/NE 1.0/2.0.
AREA ECHO (FM CARAVELAS TO SALVADOR)
WIND SE/NE 2/3. WAVES S/SE 1.5/2.0.
AREA FOXTROT (FM SALVADOR TO NATAL)
WIND SE/E 4/5. WAVES SW/SE 1.5/2.5.
AREA GOLF (FM NATAL TO SAO LUIS)
WIND SE/NE 4/6, WITH GUSTS 7 NEAR THE COAST. WAVES
SE/NE 1.2/2.5.
AREA HOTEL (FM SAO LUIS TO OIAPOQUE)
WIND SE/NE 3/4 WITH GUSTS. WAVES SE/NE 1.0/2.0.
SOUTH OCEANIC AREA
S OF 30S W OF 030W
WIND N/NW 6/7 WITH GUSTS 8, BACK SW/SE 3/5. WAVES NW/SW
2.0/3.5.
S OF 30S E OF 030W
WIND NW/W 6/7 WITH GUSTS 8/9. WAVES SW/S 1.5/2.5, BECMG
NW/W 2.5/5.0.
BETWEEN 30S AND 25S
WIND SE/NE BACK NE/NW, 3/5. WAVES SW/S 1.5/2.5.
N OF 25S
WIND SE/NE 3/5. WAVES S/SE 2.0/3.0 BECMG 1.5/2.5.
NORTH OCEANIC AREA
WIND S/SE 4/5 WITH GUSTS 6/7 S OF 10S. WAVES SW/SE
1.5/2.5.=