ZCZC SPCSWODY1 ALL ACUS01 KWNS 181930 SPC AC 181930 DAY 1 CONVECTIVE OUTLOOK NWS STORM PREDICTION CENTER NORMAN OK 0230 PM CDT SAT OCT 18 2003 VALID 182000Z - 191200Z. ...NO TSTM AREAS FORECAST... ...SYNOPSIS... UPPER PATTERN FEATURING A TROUGH OFF THE W COAST...A RIDGE OVER THE CENTRAL AND WRN CONUS...AND A TROUGH IN THE EAST WILL PERSIST THROUGH THE PERIOD. ALTHOUGH A FEW LIGHTNING STRIKES WILL BE POSSIBLE OVER THE PAC NW AS SHORTWAVE APPROACHES LATE IN THE PERIOD...AIRMASS ACROSS THE COUNTRY REMAINS GENERALLY STABLE PRECLUDING APPRECIABLE THUNDERSTORM DEVELOPMENT. ..GOSS.. 10/18/2003 ...NOTICE... FOR USERS DECODING THE POINTS PARAGRAPH HEREIN...LATITUDE AND LONGITUDE POINTS FOR THE CATEGORICAL AND PROBABILISTIC OUTLOOK GRAPHICS ALSO ARE LOCATED IN A SEPARATE PRODUCT UNDER THE WMO HEADINGS WUUS01 PTSDY1...WUUS02 PTSDY2...AND WUUS03 PTSDY3. THE INCLUSION OF POINTS IN THIS PRODUCT WILL EVENTUALLY BE DISCONTINUED. $$ |