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 Cent
er on Facebook Follow the National Hurricane Center on Twitter
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 190912
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SAT APR 19 2014

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 
0900 UTC. 

...SPECIAL FEATURE...

GALE WARNING FOR THE GULF OF TEHUANTEPEC... 

HIGH PRES BUILDING BEHIND A COLD FRONT MOVING THROUGH THE GULF 
OF MEXICO HAS TIGHTENED THE PRES GRADIENT ACROSS SOUTHERN 
MEXICO RESULTING IN MINIMAL GALE FORCE WINDS THROUGH THE GULF 
OF TEHUANTEPEC. WINDS WILL QUICKLY DIMINISH THROUGHOUT THE DAY 
WITH ONLY N-NE 20-25 KT WINDS EXPECTED THIS EVENING THROUGH 
EARLY SUN...THEN 20 KT OR LESS BY SUN AFTERNOON.

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

MONSOON TROUGH FROM 10N85W TO 6N90W. ITCZ FROM 6N90W TO 4N110W 
TO 5N122W TO 5N140W. SCATTERED MODERATE TO STRONG CONVECTION 
FROM 4N-11N BETWEEN 116W-124W. 

...DISCUSSION...                                                

AN UPPER LEVEL RIDGE IS OVER THE FAR NW PORTION OF THE 
DISCUSSION AREA FROM 32N130W TO 20N140W. DOWNSTREAM UPPER LEVEL 
TROUGH EXTENDS FROM A CYCLONIC CIRCULATION CENTERED NEAR THE 
CALIFORNIA/MEXICO BORDER TO 18N127W. SW WINDS E OF THE TROUGH 
AXIS IS ADVECTING ABUNDANT MIDDLE AND UPPER LEVEL MOISTURE INTO 
NW MEXICO. A 95-100 KT JETSTREAM EXTENDS FROM 22N113W INTO 
NORTHERN MEXICO. IN THE DEEP AN UPPER LEVEL TROUGH EXTENDS FROM 
10N105W TO THE EQUATOR AT 106W.

SURFACE RIDGE IS N OF 15 W OF 111W. THE PRES GRADIENT BETWEEN 
THE RIDGE AND THE ITCZ IS SUPPORTING TRADES IN THE 15-20 KT 
RANGE WITH SEAS TO 8 FT IN MIXED NE AND S SWELL FROM 7N-20N W OF 
134W. THESE CONDITIONS ARE EXPECTED TO CONTINUE THROUGH THE NEXT 
DAY OR TWO. AN AREA OF NW SWELL 8 TO 10 FT IS FORECAST TO MOVE 
INTO THE FAR NW PORTION OF THE AREA SUN AND SPREAD SE ON MON.

$$
DGS



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 33165-2149 USA
nhcwebmaster@noaa.gov
Disclaimer
Credits
Information Quality
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities
Page last modified: Saturday, 19-Apr-2014 09:12:50 UTC