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AXPZ20 KNHC 010959
TWDEP

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC WED APR 1 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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 0930 UTC.


...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

THE ITCZ EXTENDS FROM 04N125W TO 07N139W BEYOND 06N140W. NO SIGNIFICANT CONVECTIVE PRECIPITATION IS RELATED TO THE ITCZ.

A SURFACE TROUGH IS ALONG 09N122W TO 03N123W. CONVECTIVE PRECIPITATION...NUMEROUS STRONG FROM 09N TO 11N BETWEEN 122W AND 123W. SCATTERED MODERATE TO ISOLATED STRONG FROM 12N TO 14N BETWEEN 114W AND 120W...FROM 09N TO 12N BETWEEN 121W AND 125W...AND FROM 08N TO 10N BETWEEN 126W AND 129W.

OTHER AREAS OF CONVECTIVE PRECIPITATION...

BROAD SURFACE LOW PRESSURE COVERS THE AREA THAT IS FROM 14N SOUTHWARD FROM 103W EASTWARD.

NUMEROUS STRONG FROM 03N TO 05N BETWEEN 86W AND 89W...AND FROM 02S TO 03S BETWEEN 109W AND 111W.

SCATTERED MODERATE ISOLATED STRONG FROM 01N TO 05N BETWEEN 95W AND 103W.


.SCATTERED MODERATE FROM 09N TO 12N BETWEEN 121W AND 127W.


...DISCUSSION...

A MIDDLE LEVEL TO UPPER LEVEL TROUGH EXTENDS FROM A 17N126W CYCLONIC CIRCULATION CENTER...TO 11N129W AND TO 3N132W. THE CONVECTIVE PRECIPITATION THAT IS TO THE NORTH OF 09N122W 03N123W SURFACE TROUGH IS BEING ENHANCED BY THIS MIDDLE LEVEL TO UPPER LEVEL FEATURE.

A SURFACE RIDGE PASSES THROUGH 32N137W TO 25N130W TO 19N116W. A 1035 MB HIGH PRESSURE CENTER THAT IS NEAR 38N146W WILL SHIFT EASTWARD DURING THE NEXT 24 HOURS. THE PRESSURE GRADIENT THAT IS TO THE WEST OF SOUTHERN CALIFORNIA WILL BE TIGHTENED. GALE-FORCE WINDS WILL BE INDUCED TO THE NORTH OF THE AREA OF THIS BULLETIN. EXPECT WINDS TO REACH 20 TO 25 KNOTS FROM 28N/29N NORTHWARD BETWEEN 119W AND 126W. THE MOST SIGNIFICANT MARINE FACTOR WILL BE NORTHWEST SWELL REACHING 12 TO 13 FEET...DURING THE NEXT 24 HOURS.

A LARGER AREA OF SWELL WITH HEIGHTS FROM 8 FEET TO 10 FEET WILL BE ELSEWHERE TO THE NORTH OF THE LINE 30N116W 27N118W 22N132W 20N140W. TRADE WIND FLOW WILL REACH 20 KNOTS OR LESS WITH 8 FOOT SEA HEIGHTS FROM 13N TO 18N FROM 134W WESTWARD.


...GAP WINDS...

THE GULF OF TEHUANTEPEC...

NO SIGNIFICANT WIND EVENT IS EXPECTED FOR THE NEXT FEW DAYS. 2O TO 25 KNOT WIND SPEEDS ARE EXPECTED AROUND NOONTIME ON SATURDAY. THE WIND SPEEDS INCREASE DURING THE LATE NIGHT AND EARLY MORNING HOURS OF SUNDAY...REACHING NORTHERLY AT 25 TO 30 KNOTS BY SUNRISE ON SUNDAY...AND POSSIBLY REACHING GALE-FORCE BY SUNDAY INTO THE AFTERNOON HOURS.

THE GULF OF PAPAGAYO...

EXPECT NORTHEAST TO EAST 20 TO 25 KNOT WIND SPEEDS TODAY FOR THE NEXT 12 HOURS OR SO. THE WIND SPEEDS WILL DECREASE FOR ABOUT 12 HOURS OR SO...INTO WEDNESDAY AND EARLY THURSDAY MORNING. THE WIND SPEEDS WILL INCREASE AGAIN TO 25 TO 30 KNOTS AT THE 30 HOUR TIME IN THE FORECAST...AND THEN DECREASE IN SPEED AGAIN SIX HOURS LATER.

OFF THE COAST OF PENINSULA DEL AZUERO OF PANAMA...

EXPECT NORTHEAST WINDS 20 TO 25 KNOTS AND SEA HEIGHTS LOWER THAN 8 FEET FROM 05N TO 07N BETWEEN 79W AND 81W FOR THE NEXT 12 HOURS OR SO.

$$ MT

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