2009 National Severe Weather Workshop is scheduled for March 5-7, 2009 in Norman, OK. Visit http://www.norman.noaa.gov/nsww2009/ for details.

MD LAT/LON points format changed effective 10/21/2008. The change standardizes the format for LAT/LON data within SPC products.

Click here then click on the FNUS38 KWNS PFWF38 link close to the bottom of the page to see the LAT/LON points product for Day 3-8 Fire Weather Outlook. (effective May 20, 2008)

Click here then click on the WWUS48 PTSD48 link to see the LAT/LON points product for Day 4-8 Convective Outlook. (effective March 25, 2008)

2008 National Severe Weather Workshop is scheduled for March 6-8, 2008 in Norman, Oklahoma. Visit http://www.norman.noaa.gov/ nsww2008/ for details.

Click here to see the SPC Preliminary Severe Weather Database Summary.

The day 3-8 fire weather outlook became an official product June 12, 2007.

The day 4-8 convective outlooks became an official product March 22, 2007.

2007 National Severe Weather Workshop is scheduled for March 1-3, 2007. Visit http://www.norman.noaa.gov/nsww2007/ for details.

The SPC has updated the Short-Range Ensemble (SREF) guidance page.

Go to http://www.wdtb.noaa.gov/courses/EF-scale/index.html for more information regarding EF-Scale training by the WDTB.

Mesoscale Analysis now has 6 sectors.

PNS announcement for new Convective Watch Hazard Probabilities Product in effect on April 25, 2006.

PNS announcement for new Fire Weather Outlook Areal Outline Products in effect on May 2, 2006.

SPC Historical Storm Report Archives page has been created/reorganized March, 2006.

SPC Product & Report Archives page has been reorganized March, 2006.

SPC Probabilistic Outlook information page has been updated on February 24, 2006.

Enhanced Fujita Scale Page is available here.

Information regarding changes to the SPC probabilistic convective outlooks (in effect on Feb. 14th, 2006) is available here.

2006 National Severe Weather Workshop is scheduled for March 2, 3 and 4, 2006. Visit http://www.norman.noaa.gov/nsww2006/ for details.

PNS announcement for Lat/Lon addition to SAW and removal from SEL in effect on Feb 14, 2006.

PNS announcement regarding removal of areal description relative to anchor points in SWODY[1-2] in effect on Feb 14, 2006.

The day 4-8 severe thunderstorm outlooks are experimental and opened to the public from October 3, 2005 for comments through July 28, 2006. Product Definition Document (PDD) in HTML or MS-Word. Please send your comments for this product to spc.feedback@noaa.gov.

The 2005 National Severe Weather Workshop was held March 3-5, 2005. Workshop presentations can be found at http://www.spc.noaa.gov/misc/NSWW05/.

The National Weather Service is undertaking research on how satisfied customers are with the weather products and services provided to the general public. We would appreciate your feedback by completing the survey. Click on http://www.cfigroup.net/NOAANWS2005 to begin the survey.

Monitor the number of tornadoes during the year compared to normal and other years at www.spc.noaa.gov/climo/torn/monthlytornstats.html.

Short-Range Ensemble Forecast (SREF) based on postprocessing the 15 member NCEP SREF plus the 3-hour time lagged, operational (12 km grid spacing) NCEP Eta for a total of 16 members, is now available.

May 4, 2003 tornado outbreak links.

Updated: January 7, 2009