Storm Prediction Center ForecastSPC - No watches are valid as of Fri Nov 21 13:02:04 UTC 2008 No watches are valid as of Fri Nov 21 13:02:04 UTC 2008.SPC - No MDs are in effect as of Fri Nov 21 13:02:04 UTC 2008 No Mesoscale Discussions are in effect as of Fri Nov 21 13:02:04 UTC 2008.SPC Nov 21, 2008 1300 UTC Day 1 Convective Outlook SPC 1300Z Day 1 Outlook![]() DAY 1 CONVECTIVE OUTLOOK NWS STORM PREDICTION CENTER NORMAN OK 0657 AM CST FRI NOV 21 2008 VALID 211300Z - 221200Z ...NO SVR TSTM AREAS FORECAST... ...SYNOPSIS... DEEP BUT PROGRESSIVE TROUGH WILL CONTINUE E FROM THE OH VLY TO OFF THE MID ATLANTIC CST THIS PERIOD AS UPSTREAM DISTURBANCE NOW OVER MT AMPLIFIES SE INTO THE LWR MO VLY. DRY AND/OR COOL AIR WILL PREVAIL AT LWR LVLS ACROSS MOST OF THE CONUS. ...GRT LKS... CONVECTION WILL CONTINUE OVER THE WARMER WATERS OF THE GRT LKS TODAY...WITH THE DEEPEST ACTIVITY SHIFTING TO LKS HURON...ERIE AND ONTARIO AS UPR SYSTEM CONTINUES EWD. FORECAST SOUNDINGS SHOW SIGNIFICANT LWR TROPOSPHERIC COOLING OVER THE NEXT 24 HR BEFORERead more
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