Skip Navigation Links weather.gov   
NOAA logo - Click to go to the NOAA homepage National Weather Service   NWS logo - Click to go to the NWS homepage
National Hurricane Center
Local forecast by
"City, St" or "ZIP"

 
Alternate Formats
   Text     |   Mobile
   Email   |   RSS XML/RSS logo
   About Alternates
Cyclone Forecasts
   Latest Advisory
   Past Advisories
   Audio/Podcasts
   About Advisories
Marine Forecasts
   Atlantic & E Pacific
   Gridded Marine
   About Marine
Tools & Data
   Satellite | Radar
   Analysis Tools
   Aircraft Recon
   GIS Datasets
   Data Archive
Development
   Experimental
   Research
   Forecast Accuracy
Outreach & Education
   Prepare
   Storm Surge
   About Cyclones
   Cyclone Names
   Wind Scale
   Most Extreme
   Forecast Models
   Breakpoints
   Resources
   Glossary | Acronyms
   Frequent Questions
Our Organization
   About NHC
   Mission & Vision
   Staff | Q&A
   Visitors | Virtual Tour
   Library Branch
   NCEP | Newsletter
Contact Us
   Comments
Follow the National Hurricane Center on Facebook Follow the National Hurricane Center on Twitter
Subscribe the National Hurricane Center on YouTube Read the National Hurricane Center Inside the Eye blog on WordPress
FirstGov.gov is the U.S. Government's official Web portal to all Federal, state and local government Web resources and services.
 
 

Eastern Pacific Tropical Weather Discussion



000
AXPZ20 KNHC 041545
TWDEP 

TROPICAL WEATHER DISCUSSION                                 
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1605 UTC MON MAY 04 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. 

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

MONSOON TROUGH FROM 07N88W TO A 1009 MB LOW PRESSURE CENTER THAT 
IS NEAR 05N96W...TO 08N110W...TO A 1009 MB LOW PRESSURE CENTER 
THAT IS NEAR 08N116W... TO 03N122W. THE ITCZ CONTINUES FROM 
03N122W TO 04N140W. CONVECTIVE PRECIPITATION...SCATTERED 
MODERATE TO STRONG FROM 06N TO 09N BETWEEN 111W AND 113W...AND 
FROM 11N TO 14N BETWEEN 110W AND 115W. SCATTERED MODERATE TO 
ISOLATED STRONG FROM 01S TO 02N BETWEEN 94W AND 104W. WIDELY 
SCATTERED MODERATE FROM 01S TO 06N BETWEEN 83W AND 90W...AND 
FROM 10N TO 14N BETWEEN 88W AND 93W. 

...DISCUSSION...    

AN UPPER LEVEL TROUGH PASSES THROUGH 32N119W TO 26N126W. 
COMPARATIVELY DRIER AIR IN SUBSIDENCE IS APPARENT IN WATER VAPOR 
IMAGERY WITHIN 300 TO 400 NM TO THE NORTH AND NORTHWEST OF THE 
LINE THAT PASSES THROUGH 29N106W IN MEXICO...TO 23N120W TO 
21N133W...BEYOND 21N140W.

AN UPPER LEVEL ANTICYCLONIC CIRCULATION CENTER IS NEAR 14N112W. 
BROAD UPPER LEVEL ANTICYCLONIC WIND FLOW COVERS THE EASTERN 
PACIFIC OCEAN TO THE SOUTHEAST OF THE 29N106W-TO-21N140W LINE. A 
SURFACE RIDGE IS ALONG 16N103W 22N110W 25N125W BEYOND 30N140W. 

LARGE SOUTHWEST SOUTHERN HEMISPHERIC LONG-PERIOD SWELL...THAT 
HAS BEEN MOVING ACROSS MUCH OF THE AREA DURING THE LAST FEW 
DAYS...HAS BROUGHT 8 TO 14 FOOT SEA HEIGHTS TO THE WATERS THAT 
ARE FROM 120W EASTWARD. LARGE AND DANGEROUS SURF ALONG THE 
PACIFIC COASTLINES FROM PERU TO COLOMBIA TO MEXICO WILL BEGIN TO 
SUBSIDE GRADUALLY TODAY...BEFORE THIS CURRENT SWELL EVENT ENDS 
LATER TONIGHT. SIGNIFICANT SWELL ALSO IS ENTERING THE SOUTHERN 
SECTIONS OF THE GULF OF CALIFORNIA...WHERE THE MAXIMUM SEA 
HEIGHTS ARE EXPECTED TO BUILD TO 7 TO 10 FEET. 

$$
MT


Quick Navigation Links:
Tropical Cyclone Forecasts  -  Tropical Marine Forecasts  -  Data Archive
Outreach  -  Prepare  -  About Cyclones  -  About NHC  -  Contact Us

NOAA/ National Weather Service
National Centers for Environmental Prediction
National Hurricane Center
11691 SW 17th Street
Miami, Florida 33165 USA
nhcwebmaster@noaa.gov
Disclaimer
Credits
Information Quality
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities
Page last modified: Monday, 04-May-2015 15:45:48 UTC