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.
 
 

Hurricane KATIA


ZCZC MIATCDAT2 ALL
TTAA00 KNHC DDHHMM CCA
 
HURRICANE KATIA DISCUSSION NUMBER  49...CORRECTED
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL122011
500 AM AST SAT SEP 10 2011
 
CORRECTED STATUS IN TABLE AT 12-HOUR FORECAST TIME

KATIA APPEARS TO BE GRADUALLY LOSING ITS TROPICAL CHARACTERISTICS.
THE ASSOCIATED CLOUD PATTERN IS BECOMING INCREASINGLY ELONGATED...
WITH THE LOW-LEVEL CENTER ON THE SOUTHERN EDGE OF THE 
CONVECTION. THE LATEST SATELLITE CLASSIFICATIONS SUGGEST THAT KATIA
HAS WEAKENED A LITTLE...AND THAT IS THE BASIS FOR THE SLIGHTLY
LOWER INITIAL INTENSITY OF 70 KT. STRONG SOUTHWESTERLY SHEAR
ASSOCIATED WITH A DEEP-LAYER TROUGH AND SEA SURFACE TEMPERATURES
COLDER THAN 20C...SHOULD CAUSE KATIA TO BECOME EXTRATROPICAL IN
ABOUT 12 HOURS. HOWEVER...THE CYCLONE IS EXPECTED TO REMAIN QUITE
STRONG AS AN EXTRATROPICAL SYSTEM WHILE MOVING QUICKLY ACROSS THE
FAR NORTH ATLANTIC....APPROACHING THE BRITISH ISLES AND NORTHERN
EUROPE IN A COUPLE OF DAYS.
  
THE HURRICANE IS EMBEDDED IN THE STRONG MID-LATITUDE WESTERLIES...
AND THE LATEST INITIAL MOTION ESTIMATE IS 060/38. THE CYCLONE IS
EXPECTED TO ACCELERATE DURING THE NEXT 12 TO 24 HOURS WITHIN THE
STRONG FLOW TO THE EAST OF A HIGH LATITUDE DEEP-LAYER TROUGH. THE
FORECAST TRACK IS SIMILAR TO THE PREVIOUS ONE AND CLOSE TO THE
GUIDANCE PROVIDED BY THE OCEAN PREDICTION CENTER.
 
INTERESTS IN AND AROUND THE BRITISH ISLES AND NORTHERN EUROPE SHOULD
MONITOR PRODUCTS ISSUED BY THE UKMET OFFICE AT
WWW.METOFFICE.GOV.UK/WEATHER
 
NO 96-HOUR FORECAST POINT HAS BEEN PROVIDED DUE TO SOFTWARE
ISSUES WHEN SYSTEMS MOVE EAST OF ZERO DEGREES LONGITUDE. THE 34- AND
50-KT WIND RADII WERE EXPANDED OUTWARD OVER THE WESTERN SEMICIRCLE
BASED ON A 0144 UTC ASCAT PASS.
 
FORECAST POSITIONS AND MAX WINDS
 
INIT  10/0900Z 43.3N  53.4W   70 KT  80 MPH
 12H  10/1800Z 46.0N  44.7W   65 KT  75 MPH...POST-TROP/EXTRATROP
 24H  11/0600Z 50.2N  32.2W   65 KT  75 MPH...POST-TROP/EXTRATROP
 36H  11/1800Z 53.9N  21.6W   65 KT  75 MPH...POST-TROP/EXTRATROP
 48H  12/0600Z 57.3N  13.7W   60 KT  70 MPH...POST-TROP/EXTRATROP
 72H  13/0600Z 61.3N   1.3W   45 KT  50 MPH...POST-TROP/EXTRATROP
 96H  14/0600Z...EAST OF ZERO DEGREES LONGITUDE
 
$$
FORECASTER CANGIALOSI
 
NNNN


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: Tuesday, 17-Jul-2012 13:43:55 UTC