Skip Navigation Links weather.gov 
NOAA logo-Select to go to the NOAA homepage NOAA's National Weather Service   Select to go to the NWS homepage
Storm Prediction Center
navigation bar left  
  navigation bar end cap


 
USA.gov is the U.S. Government's official Web portal to all Federal, state and local government Web resources and services.

    Day 2 Outlook >
Nov 21, 2018 1300 UTC Day 1 Convective Outlook
Updated: Wed Nov 21 12:47:39 UTC 2018 (Print Version | 20181121 1300Z Day 1 shapefile | 20181121 1300Z Day 1 KML)
Probabilistic to Categorical Outlook Conversion Table
Categorical Tornado Wind Hail
 Population  Cities/Towns  CWAs  Interstates  Counties  ARTCC  FEMA Regions

 Forecast Discussion
   SPC AC 211247

   Day 1 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0647 AM CST Wed Nov 21 2018

   Valid 211300Z - 221200Z

   ...NO SEVERE THUNDERSTORM AREAS FORECAST...

   ...SUMMARY...
   Isolated thunderstorms are possible today from coastal into central
   California, and across parts of southeast Texas.

   ...Synopsis...
   No changes to the previous outlook.  A weak southern-stream
   shortwave trough will move eastward to the northwest Gulf Coast by
   tonight, in advance of a larger-scale trough that will progress
   inland over CA.  Steepening low-midlevel lapse rates with the CA
   trough, as evidenced by the area of convection and isolated
   lightning strikes near 130 W, will support a threat for isolated
   thunderstorms from about midday into tonight.  Along the TX coast, a
   modifying low-level air mass and a low-level warm advection regime
   will contribute to weak destabilization atop a coastal front.  A few
   elevated thunderstorms will be possible from this afternoon into
   tonight.

   ..Thompson/Peters.. 11/21/2018

   CLICK TO GET WUUS01 PTSDY1 PRODUCT

   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 1630Z

        
Top/Latest Day 2 Outlook/Today's Outlooks/Forecast Products/Home
Weather Topics:
Watches, Mesoscale Discussions, Outlooks, Fire Weather, All Products, Contact Us

NOAA / National Weather Service
National Centers for Environmental Prediction
Storm Prediction Center
120 David L. Boren Blvd.
Norman, OK 73072 U.S.A.
spc.feedback@noaa.gov
Page last modified: November 21, 2018
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities