ZCZC MIATCMEP4 ALL
TTAA00 KNHC DDHHMM

HURRICANE WILLA FORECAST/ADVISORY NUMBER  13
NWS NATIONAL HURRICANE CENTER MIAMI FL       EP242018
0900 UTC TUE OCT 23 2018

CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...

NONE.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

A HURRICANE WARNING IS IN EFFECT FOR...
* SAN BLAS TO MAZATLAN... INCLUDING LAS ISLAS MARIAS

A TROPICAL STORM WARNING IS IN EFFECT FOR...
* PLAYA PERULA TO SAN BLAS
* NORTH OF MAZATLAN TO BAHIA TEMPEHUAYA

A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED
SOMEWHERE WITHIN THE WARNING AREA...IN THIS CASE WITHIN THE NEXT
6 TO 12 HOURS FOR ISLA MARIAS...AND WITHIN 12 TO 18 HOURS FOR
MAINLAND MEXICO. PREPARATIONS TO PROTECT LIFE AND PROPERTY SHOULD
BE RUSHED TO COMPLETION.

A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE
EXPECTED SOMEWHERE WITHIN THE WARNING AREA.

INTERESTS ELSEWHERE ALONG THE COASTS OF WEST-CENTRAL AND
SOUTHWESTERN MAINLAND MEXICO SHOULD MONITOR THE PROGRESS OF WILLA.

HURRICANE CENTER LOCATED NEAR 20.8N 107.3W AT 23/0900Z
POSITION ACCURATE WITHIN  15 NM

PRESENT MOVEMENT TOWARD THE NORTH OR 360 DEGREES AT   4 KT

ESTIMATED MINIMUM CENTRAL PRESSURE  945 MB
MAX SUSTAINED WINDS 115 KT WITH GUSTS TO 140 KT.
64 KT....... 30NE  30SE  20SW  25NW.
50 KT....... 50NE  50SE  40SW  50NW.
34 KT.......110NE 100SE  80SW  90NW.
12 FT SEAS..150NE 210SE 180SW 180NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT.  RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.

REPEAT...CENTER LOCATED NEAR 20.8N 107.3W AT 23/0900Z
AT 23/0600Z CENTER WAS LOCATED NEAR 20.6N 107.3W

FORECAST VALID 23/1800Z 22.0N 106.5W
MAX WIND 100 KT...GUSTS 120 KT.
64 KT... 30NE  30SE  20SW  20NW.
50 KT... 60NE  50SE  40SW  40NW.
34 KT...100NE 100SE  70SW  80NW.

FORECAST VALID 24/0600Z 23.8N 104.5W...INLAND
MAX WIND  40 KT...GUSTS  50 KT.
34 KT... 50NE  60SE  40SW  40NW.

FORECAST VALID 24/1800Z 25.8N 102.3W...POST-TROP/REMNT LOW INLAND
MAX WIND  20 KT...GUSTS  30 KT.

FORECAST VALID 25/0600Z...DISSIPATED INLAND

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 20.8N 107.3W

NEXT ADVISORY AT 23/1500Z

$$
FORECASTER STEWART


NNNN