National Weather Service United States Department of Commerce

Active Weather for the Plains and Mississippi Valley

A developing storm across the Southern Plains is forecast to bring severe weather that includes large hail and damaging wind gusts, heavy rainfall that could result in flash flooding across portions of the Plains and Mississippi Valley. The effects of this storm will continue through the middle of this week. The Four Corners area will continue to see elevated to critical fire weather conditions. Read More >

12-hour helicity forecast

 

Figure 7: ETA 12 Hour Forecast of 250-850 mb Qn vectors,
thickness and isotachs valid 1200 UTC May 12, 1997.

 

18-hour helicity forecast

 

Figure 8: ETA 18 Hour Forecast of 250-850 mb Qn vectors,
thickness and isotachs valid 1800 UTC May 12, 1997.