Welcome to the CAPS ARPS user web pages. The spring experiments are over. Normal runs are resumed. The CAPS realtime system will be running on "auto pilot" thru the first part of July due to vacations. Note that all runs, with the exception of LEAD10, are missing a lot of radar data. This is due to a change in NEXRAD format. The code to get the rest of the runs using radar data will be added in July. Click here to learn about the *Tropical Storm* that affected Oklahoma on August 19th, 2007. Watch for extra run with names that start with "mesoh" during hurricane season. CAPS is now located in the National Weather Center. Daily ARPS and WRF forecasts are run on the OSCER supercomputers. Some of the forecasts run are in support of LEAD - "Linked Environments for Atmospheric Discovery". OU Supercomputers have routine maintenance scheduled on Wednesdays from 8am to 8pm. On these days, forecasts will be cut short, though they may eventually run. LEAD10 analyses are moved to a LEAD computer system during the weekly maintenance slot. Bookmarking favorite images, animation loops, and multipanels is possible, though the URL's aren't obviously from the web pages. Please send email to realtime@caps.ou.edu for more information. Analysis and forecasts history files are available for ftp in both HDF4 and netCDF format. HDF4 may be discontinued in the future, however, there are no immediate plans. The data is at ftp://caps.ou.edu/pub/arpsdata. Both HDF4 and netCDF format are supported. Analysis and Forecast regions: CONUS - CONtinental U.S. (analysis only), 27km grid. CONUS20 - CONtinental U.S., 00Z run, 00Z NAM boundary data, 84 hours, 20km grid, ARPS and WRF. SPMESO - Southern Plains MESOscale, 12Z run, CONUS boundary data, 24 hours, 9km grid, ARPS. SPSTORM - Southern Plains STORMscale, SPMESO boundary data, 3km grid, ARPS. The 00Z run is 6 hours. The 12Z run is 12 hours. SPSTORM2 - Southern Plains STORMscale, 2km NAM data. Current run is 18Z and run to 12 hours. CASA radar data used when available. NEUS - NorthEastern U.S. (analysis only), 9km grid. LEAD10 - LEAD 10km analysis over the U.S., every hour. LEAD20 - LEAD 20km forecast over the U.S, initialized with LEAD10 data. Runs are 12 hours in length, and are run at 06Z, 12Z, and 18Z. Other temporary regions are added as interesting weather occurs. Hourly objective analysis runs: CONUS and SPMESO are ready about 30 minutes past the hour, CASA4 (uses CASA radars when available) is ready about 45 minutes past the while, while the the NEUS is ready about 60 minutes past the hour. LEAD10 is now ready about 30 minutes past the run hour. OSCER Supercomputers are a big part of the CAPS forecasts. Thanks go to the System Admins who work to keep the systems running! We would like your feedback. Send email to realtime@caps.ou.edu. If there is a problem, we would like to know. Thanks for visiting the CAPS ARPS user web pages. KWT...06/12/08...3:50pm CDT.