000
AXPZ20 KNHC 261506
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1605 UTC WED AUG 26 2015

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM  
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS 
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND 
METEOROLOGICAL ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC. 

...SPECIAL FEATURES...

TROPICAL STORM IGNACIO CENTERED NEAR 12.2N 135.1W AT 26/1500 UTC 
IS MOVING W OR 265 DEG AT 8 KT. ESTIMATED MINIMUM CENTRAL PRES 
IS 999 MB. MAXIMUM SUSTAINED WINDS ARE 50 KT WITH GUSTS TO 60 
KT. SCATTERED TO NUMEROUS STRONG CONVECTION WAS NOTED WITHIN 60 
NM W AND 20 NM E SEMICIRCLES. SCATTERED MODERATE ISOLATED STRONG 
CONVECTION WAS NOTED FROM 09N TO 16N W OF 132W. IGNACIO IS 
FORECAST TO REACH HURRICANE INTENSITY BY THU MORNING. THE SYSTEM 
IS EXPECTED TO MOVE W OF THE FORECAST AREA BY THU NIGHT. PLEASE 
SEE LATEST NHC FORECAST/ADVISORY UNDER AWIPS/WMO HEADERS 
MIATCMEP2/WTPZ22 KNHC FOR MORE DETAILS.

LOW PRES OF 1007 MB IS CENTERED NEAR 10N112W WITH PRES OF 1007 
MB. SCATTERED MODERATE ISOLATED STRONG CONVECTION WAS NOTED FROM 
09N TO 14N BETWEEN 110W AND 115W. THE SYSTEM CONTINUES TO BECOME 
BETTER ORGANIZED AND THERE IS A HIGH CHANCE THAT IT WILL DEVELOP 
INTO A TROPICAL CYCLONE. 

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...           
THE MONSOON TROUGH EXTENDS FROM 08N83W TO 10N111W. SCATTERED 
MODERATE CONVECTION WAS NOTED WITHIN 120 NM N OF THE TROUGH 
BETWEEN 87W AND 95W. 

...DISCUSSION... 

HIGH PRESSURE CENTERED N OF THE AREA NEAR 34N130W EXTENDS A 
RIDGE SE TO NEAR 20N112W. OUTSIDE OF TROPICAL STORM 
IGNACIO...GENTLE TO MODERATE TRADE WINDS ARE NOTED ON THE 
SOUTHERN PERIPHERY OF THE RIDGE. LONG PERIOD CROSS EQUATORIAL SW 
SWELL WITH PERIODS IN THE 17-18 SECOND RANGE WILL CONTINUE TO 
PROPAGATE NORTHEASTWARD ACROSS THE SOUTH CENTRAL 
WATERS...REACHING THE MEXICAN AND CENTRAL AMERICAN COASTS THIS 
AFTERNOON. THESE SWELLS WILL CREATE DANGEROUS LIFE THREATENING 
SURF ALONG THESE COASTS. 
 
GAP WINDS...                                                     
GULF OF TEHUANTEPEC...STRONG TO NEAR GALE WINDS ARE FUNNELING 
INTO THE GULF OF TEHUANTEPEC. WINDS WILL BRIEFLY WEAKEN THIS 
AFTERNOON BEFORE ONCE AGAIN REACHING NEAR GALE FORCE LATER THIS 
EVENING AND OVERNIGHT. 

$$
AL