Mesoscale Discussion 0463
   NWS Storm Prediction Center Norman OK
   0336 PM CDT Tue Apr 16 2024

   Areas affected...Northern Iowa

   Concerning...Tornado Watch 118...

   Valid 162036Z - 162130Z

   The severe weather threat for Tornado Watch 118 continues.

   SUMMARY...The tornado threat within watch 118 is now confined to
   northern Iowa.

   DISCUSSION...As the Pacific front interacted with convection across
   eastern Nebraska around 19Z, a strong outflow boundary pushed well
   ahead of convection which has essentially ended the severe weather
   threat for the western half of watch 118. In addition, this outflow
   boundary has recently collided with the warm front near the
   intersection of MN/IA/SD and thus, expect the storm which moved
   north of the boundary to continue to weaken. 

   Therefore, the only remaining favorable airmass is northeast of the
   dryline across north-central Iowa. In this region, a few tornadoes
   have been confirmed with the low-topped supercell in Pocahontas
   county at 2030Z. Visible satellite and radar trends show additional
   storms developing southeast of this storm which may also pose a
   tornado threat this afternoon and into the early evening as they
   move north.

   ..Bentley.. 04/16/2024

   ...Please see www.spc.noaa.gov for graphic product...

   ATTN...WFO...MPX...DMX...FSD...OAX...

   LAT...LON   41609365 41729530 41839642 42379699 43279660 43529626
               43559523 43429408 42869354 42369339 42089329 41649317
               41609365