SPC Mesoscale Discussion 0390

Mesoscale Discussion 0390 NWS Storm Prediction Center Norman OK  1037 AM CDT Fri Mar 31 2023 Areas affected...portions of southeastern Iowa...northwestern Illinois...and far northeastern Missouri Concerning...Outlook upgrade Valid 311537Z - 311630Z SUMMARY...Portions of the Moderate Risk over southeastern IA, northwestern IL, and far northeastern MO will be upgraded to a  categorical High Risk in the 1630 UTC Convective outlook. DISCUSSION...An upgrade to a tornado-driven High Risk (30%  probability) is expected for the 1630 UTC outlook. Environmental conditions are quickly becoming favorable to support the potential for numerous strong to potentially violent and long-track tornadoes across portions of southeastern IA, northwestern IL, and far northeastern MO. Please see the forthcoming Day 1 outlook update for more information. ..Lyons/Smith.. 03/31/2023   ...Please see www.spc.noaa.gov for graphic product...    ATTN...WFO...ILX...LSX...DVN...DMX...    LAT...LON   39879141 40699241 41549220 41989172 42009085 41118967 40618964 39969001 39789064 39879141