Subj : MESO: Mesoscale Discussion 1768 To : wx-storm@lists.illinois.edu From : COD Weather Processor Date : Wed Jul 31 2024 18:39:38 ACUS11 KWNS 311839 SWOMCD SPC MCD 311838=20 WIZ000-MNZ000-SDZ000-NDZ000-312015- Mesoscale Discussion 1768 NWS Storm Prediction Center Norman OK 0138 PM CDT Wed Jul 31 2024 Areas affected...central MN and far northwest WI Concerning...Severe Thunderstorm Watch 579... Valid 311838Z - 312015Z The severe weather threat for Severe Thunderstorm Watch 579 continues. SUMMARY...A well developed bow echo will continue to produce damaging gusts in the 60-80 mph range across west-central MN. This activity will likely remain severe into portions of northeast/east-central MN and perhaps far northwest WI, and a new severe thunderstorm watch will likely be needed downstream from WW 579. DISCUSSION...A well developed bow echo is moving across west-central MN within a strongly unstable airmass characterized by dewpoints in the low 70s F and steep midlevel lapse rates. While vertical shear weakens with northward extent, latest mesoanalysis and region VWP data suggest effective shear magnitudes have increased across northeast/east-central MN. Furthermore, VWP data from KABR has measured rear-inflow around 55-70 kt between 3-6 km. Given favorable low-level moisture, strong instability and at least modestly favorable vertical shear, expect this bow echo will continue east/northeast and a downstream watch will likely be needed. ...Leitman.. 07/31/2024 ....Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!5gyBnyfcz0-TtbbYCmbz8zp5H6dSSMsxex7pAOCHqz4Ow5I_lRVRl45b6b9UCzBxyuSe32AuI= PefQQCQkjuvhMIFOlk$ for graphic product... ATTN...WFO...DLH...MPX...FGF...ABR... LAT...LON 46539681 47369472 47269299 46629205 46149208 45789246 45469365 45299505 45239639 45349678 45869706 46539681=20 =3D =3D =3D To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM. --- SBBSecho 3.20-Linux * Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105) .