Mesoscale Discussion 1745
Issued: · Valid: –
Summary
A few supercells capable of producing large hail and damaging wind gusts are possible across eastern Iowa this afternoon and evening.
Product Text
000 ACUS11 KWNS 262055 SWOMCD SPC MCD 262054 IAZ000-MOZ000-262230- Mesoscale Discussion 1745 NWS Storm Prediction Center Norman OK 0354 PM CDT Sun Jul 26 2026 Areas affected...eastern Iowa Concerning...Severe potential...Watch unlikely Valid 262054Z - 262230Z Probability of Watch Issuance...20 percent SUMMARY...A few supercells are possible this afternoon/evening. DISCUSSION...A few weak cells have been moving slowly eastward across northern Iowa this morning in vicinity of the a weak MCV moving across the area. Within the last 20 minutes, convective intensity has started to increase somewhat. Given the weak forcing, it is is not clear whether these storms will mature, but if they do, 4000-5000 J/kg MLCAPE and 45 to 50 knots of effective shear will support supercells capable of large hail and severe wind gusts. ..Bentley/Leitman.. 07/26/2026 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...DVN...ARX...DMX...EAX... LAT...LON 42459354 43379386 43259268 43019136 41079120 40599170 40549245 41579309 42459354 MOST PROBABLE PEAK WIND GUST...55-70 MPH MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN