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 >
Oct 20, 2014 0600 UTC Day 1 Convective Outlook
Updated: Mon Oct 20 05:42:59 UTC 2014 (Print Version | 20141020 1200Z Day 1 shapefile | 20141020 1200Z 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 200542

   DAY 1 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1242 AM CDT MON OCT 20 2014

   VALID 201200Z - 211200Z

   ...NO SVR TSTM AREAS FORECAST...

   ...SUMMARY...
   ISOLATED THUNDERSTORMS WILL BE POSSIBLE TODAY AND TONIGHT IN AREAS
   INCLUDING THE SOUTHERN ROCKIES AND SOUTHERN PLAINS...IN ADDITION TO
   THE OHIO VALLEY AND PACIFIC NORTHWEST.

   ...SYNOPSIS...
   SEMI-AMPLIFIED WESTERLIES WILL EXIST OVER THE NORTHERN HALF OF THE
   CONUS THROUGH TONIGHT/EARLY TUESDAY. ONE SHORTWAVE TROUGH WILL MOVE
   INLAND/EASTWARD OVER NORTHERN CA/ORE LATE THIS AFTERNOON AND
   TONIGHT...WHILE AN ADDITIONAL SHORTWAVE TROUGH AMPLIFIES OVER THE
   GREAT LAKES VICINITY. WHILE SEVERE THUNDERSTORMS ARE NOT
   EXPECTED...MULTIPLE AREAS OF AT LEAST A LOW THUNDERSTORM POTENTIAL
   ARE EXPECTED ACROSS THE CONUS.

   ...SOUTHERN ROCKIES/SOUTHERN PLAINS...
   A WEAKENING/SLOW-MOVING UPPER LOW OVER NORTHERN MEXICO WILL CONTINUE
   TO INFLUENCE SHOWER/THUNDERSTORM POTENTIAL ACROSS PARTS OF THE
   REGION...BUT ESPECIALLY ACROSS PARTS OF NM/FAR WEST TX THIS
   AFTERNOON AND EVENING. SEVERE THUNDERSTORMS ARE NOT ANTICIPATED
   GIVEN LIMITED BUOYANCY AND VERY WEAK EFFECTIVE SHEAR /15 KT OR
   LESS/.

   ...OH VALLEY...
   LOW-TOPPED CONVECTION IS EXPECTED TODAY IN VICINITY OF A
   SOUTHEASTWARD-MOVING COLD FRONT. THERMODYNAMIC PROFILES MAY BE
   MARGINALLY SUPPORTIVE OF LIGHTNING/FEW THUNDERSTORMS...PRIMARILY
   ACROSS PARTS OF OH AND THE LAKE ERIE VICINITY THIS AFTERNOON/EARLY
   EVENING.

   ...PACIFIC NORTHWEST...
   A FEW THUNDERSTORMS WILL BE POSSIBLE IN OFFSHORE/NEAR-COASTAL AREAS
   OF THE PACIFIC NORTHWEST VIA LOW-TOPPED CONVECTION NEAR/BEHIND AN
   INLAND-MOVING FRONTAL BAND.

   ..GUYER/JIRAK.. 10/20/2014

   CLICK TO GET WUUS01 PTSDY1 PRODUCT

   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 1300Z

        
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: October 20, 2014
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities