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.
 
 

Atlantic Tropical Weather Discussion



000
AXNT20 KNHC 270548
TWDAT 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
205 AM EDT FRI MAR 27 2015

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL  
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS OF 
SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE 
EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE 
IMAGERY...WEATHER OBSERVATIONS...RADAR...AND METEOROLOGICAL 
ANALYSIS.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0515 UTC.

...SPECIAL FEATURES...                                          
A COLD FRONT IS ANALYZED FROM SE LOUISIANA NEAR 29N91W INTO THE 
GULF TO THE EASTERN COAST OF MEXICO NEAR 23N98W. THE FRONT IS 
FORECAST TO PROGRESS SOUTHEASTWARD ACROSS THE WESTERN GULF OF 
MEXICO OVERNIGHT WITH NEAR GALE TO GALE FORCE NORTHERLY WINDS 
EXPECTED TO MATERIALIZE BY 27/1200 UTC ACROSS PORTIONS OF THE SW 
GULF WATERS S OF 21N W OF 95W. SEE LATEST NWS HIGH SEAS FORECAST 
UNDER AWIPS/WMO HEADERS MIAHSFAT2/FZNT02 KNHC FOR MORE DETAILS.

...ITCZ/MONSOON TROUGH...                                     
THE MONSOON TROUGH EXTENDS FROM THE AFRICAN COAST NEAR 08N13W TO 
THE EQUATOR NEAR 16W. ISOLATED MODERATE CONVECTION IS FROM THE 
EQUATOR TO 10N BETWEEN 03W-11W.

...DISCUSSION...

GULF OF MEXICO...                                               
SOUTHWESTERLY MIDDLE TO UPPER LEVEL FLOW ALOFT IS NOTED ON WATER 
VAPOR IMAGERY TO THE EAST OF AN UPPER LEVEL TROUGH WITH AXIS 
EXTENDING FROM OVER THE GREAT LAKES REGION S-SW TO SW TEXAS AND 
NW MEXICO. THE TROUGHING SUPPORTS A 1010 MB LOW CENTERED ACROSS 
SE LOUISIANA AND THE ASSOCIATED COLD FRONT ANALYZED FROM THE LOW 
CENTER SW TO THE EAST COAST OF MEXICO NEAR 23N98W. TWO MAIN AREA 
OF PRECIPITATION ARE OCCURRING WITH THE FRONT...THE FIRST IS 
SCATTERED TO NUMEROUS SHOWERS AND SCATTERED TSTMS EAST OF THE 
FRONT ACROSS THE NE GULF WATERS N OF 25N...INCLUDING INLAND 
PORTIONS OF THE FLORIDA PANHANDLE AND INTERIOR ALABAMA AND 
GEORGIA. THE OTHER AREA OF SCATTERED SHOWERS AND TSTMS IS 
OCCURRING ACROSS THE SW GULF FROM 19N-23N BETWEEN 93W-99W. 
OTHERWISE...EAST OF THE FRONT GENTLE TO MODERATE S-SW WINDS WERE 
NOTED ON EARLIER ASCAT PASSES AND FRESH TO STRONG NORTHERLY 
WINDS ARE OCCURRING WEST OF THE FRONT. THESE STRONGER NORTHERLY 
WINDS WILL SWEEP ACROSS THE GULF THROUGH LATE FRIDAY INTO EARLY 
SATURDAY AS THE COLD FRONT CLEARS THE BASIN BY SATURDAY. 
THEREAFTER...A STRONG SURFACE RIDGE WILL REMAIN IN PLACE FOR THE 
REMAINDER OF THE UPCOMING WEEKEND.

CARIBBEAN SEA...                                            
WATER VAPOR IMAGERY INDICATES AN UPPER LEVEL RIDGE AXIS EXTENDS 
OVER THE CARIBBEAN FROM WESTERN VENEZUELA N-NW TO CENTRAL CUBA 
NEAR 22N80W. MUCH OF THE RIDGING INFLUENCES THE BASIN WITH 
STRONG SUBSIDENCE IN DRY AIR AND OVERALL STABLE CONDITIONS AT 
THE SURFACE. SATELLITE IMAGERY CONFIRMS THE STABLE CONDITIONS 
WITH VERY LITTLE CLOUDINESS UNDER MOSTLY CLEAR SKIES AS AN 
OVERALL WEAK SURFACE PRESSURE GRADIENT IS LENDING TO MODERATE TO 
OCCASIONAL FRESH TRADES FOR THE OVERNIGHT PERIOD.

...HISPANIOLA...                                                
ISOLATED SHOWERS CONTINUE ACROSS THE ISLAND THIS EVENING... 
HOWEVER SURFACE RIDGING AND DRY AIR ALOFT CONTINUE TO PROMOTE 
OVERALL FAIR CONDITIONS FOR THE REGION. THIS OVERALL SYNOPTIC 
ENVIRONMENT IS EXPECTED TO PERSIST FOR THE NEXT FEW DAYS.

ATLANTIC OCEAN...                                            
WEST-SOUTHWESTERLY FLOW ALOFT IS NOTED ON WATER VAPOR IMAGERY 
OVER MUCH OF THE SW NORTH ATLC AHEAD OF AN APPROACHING MIDDLE TO 
UPPER LEVEL TROUGH CURRENTLY EXTENDING FROM THE GREAT LAKES 
REGION S-SW TO WESTERN TEXAS. WHILE THE ASSOCIATED FRONT REMAINS 
WELL TO THE WEST...SOUTHERLY PRE-FRONTAL MOISTURE AND LOW-LEVEL 
CONVERGENCE IS GENERATING SCATTERED SHOWERS AND ISOLATED TSTMS N 
OF 27N W OF 73W. FARTHER EAST...ANOTHER MIDDLE TO UPPER LEVEL 
TROUGH IS NOTED OVER THE CENTRAL ATLC WITH AXIS EXTENDING FROM 
26N41W TO A BASE NEAR 24N52W THAT SUPPORTS A COLD FRONT ANALYZED 
FROM 32N39W TO 25N45W TO 22N55W AND THEN BECOMES DIFFUSE TO THE 
W-NW TO 27N72W. SCATTERED SHOWERS AND TSTMS ARE OCCURRING WITHIN 
120 NM EAST AND 90 NM WEST OF THE FRONT E OF 49W...WITH 
LINGERING SCATTERED SHOWERS OCCURRING WITHIN 90 NM EITHER SIDE 
OF THE BOUNDARY W OF 49W. OTHERWISE...A SURFACE RIDGE ANCHORED 
BY A 1031 MB HIGH CENTERED NEAR 24N57W IS PROVIDING MOSTLY FAIR 
WEATHER OUTSIDE OF THE INFLUENCE OF THE FRONT BETWEEN 40W-75W. 
FINALLY...ACROSS THE EASTERN ATLC...ANOTHER SURFACE RIDGE 
ANCHORED BY A 1034 MB HIGH CENTERED NEAR 38N17W IS PROVIDING 
FAIR WEATHER GENERALLY E OF 40W.

FOR ADDITIONAL INFORMATION PLEASE VISIT 
WWW.HURRICANES.GOV/MARINE

$$
HUFFMAN


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 05:48:28 UTC