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 270835
TWDEP 

TROPICAL WEATHER DISCUSSION                                     
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1005 UTC FRI MAR 13 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 
0300 UTC. 

...SPECIAL FEATURES...  

HIGH PRES BUILDING BEHIND A STRONG COLD FRONT MOVING THROUGH THE 
GULF OF MEXICO THIS WILL TIGHTEN THE PRES GRADIENT ACROSS 
SOUTHERN MEXICO RESULTING GALE FORCE WINDS THROUGH THE GULF OF 
TEHUANTEPEC LATER TODAY. WITH WINDS INCREASE TO AROUND 40 KT AND 
SEAS BUILDING TO 17 FT BY EARLY SAT. WINDS WILL LIKELY REMAIN 
NEAR GALE FORCE SAT NIGHT BEFORE SLOWLY DIMINISHING BELOW GALE 
FORCE SUNDAY MORNING...WITH WIND AND SEAS THEN SUBSIDING QUICKLY 
SUN AFTERNOON AND EVENING.

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

MONSOON TROUGH FROM 06N93W TO 1013 MB LOW PRES 06N111W 05N123W. 
ITCZ EXTENDS FROM 05N123W TO 05N140W. SCATTERED MODERATE 
ISOLATED STRONG CONVECTION NOTED WITHIN 120 NM EITHER SIDE OF 
TROUGH FROM 06N90W TO 05N102W. SCATTERED MODERATE ISOLATED 
STRONG FROM 04N TO 11N BETWEEN 110W AND 117W.

...DISCUSSION...                                                

AN UPPER LEVEL TROUGH HAS MOVED INTO THE FAR NW PORTION OF THE 
DISCUSSION AREA EXTENDING FROM 32N138W TO 25N140W. AN UPPER 
LEVEL RIDGE E OF THE TROUGH EXTENDS FROM 32N122W TO 20N125W. AN 
EAST TO WEST UPPER LEVEL TROUGH WITH AXIS FROM NORTHERN MEXICO 
ACROSS NORTHERN BAJA CALIFORNIA TO 28N120W. A 90 TO 100 KT 
JETSTREAM IS S OF THE TROUGH FROM 21N118W INTO CENTRAL MEXICO. 
IN THE DEEP TROPICS AN UPPER LEVEL RIDGE EXTENDS FROM AN 
ANTICYCLONIC CIRCULATION NEAR 9N18W WITH RIDGE TO 15116W.

A COLD FRONT IN THE NW PORTION OF THE AREA EXTENDING FROM 
32N134W TO 27N140W. NW SWELL TO 9 FT WILL BUILD NW OF THE FRONT. 
THE FRONT WILL DISSIPATE SAT. OTHERWISE A SURFACE RIDGE IS N OF 
15N W OF 115W. CROSS EQUATORIAL SW SWELL IS S OF 15N BETWEEN 95W-
120W.

$$ 
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 USA
nhcwebmaster@noaa.gov
Disclaimer
Credits
Information Quality
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities
Page last modified: Friday, 27-Mar-2015 08:35:12 UTC