Storm Prediction Center Mesoscale Discussion 288

   Mesoscale Discussion 0288
   NWS Storm Prediction Center Norman OK
   0832 PM CDT Sat Mar 29 2025

   Areas affected...East-central Minnesota and northern Wisconsin

   Concerning...Freezing rain 

   Valid 300132Z - 300630Z

   SUMMARY...Freezing rain will increase in intensity and coverage over
   the next few hours and persist into the early morning hours.
   Freezing rain rates of 0.05-0.1 inch per 3 hours are possible in
   some locations.

   DISCUSSION...The latest water-vapor imagery loop indicates a
   negatively tilted midlevel shortwave trough tracking northeastward
   into southwestern MN this evening. An expansive precipitation shield
   preceding this feature will continue overspreading central MN into
   northern WI into the early morning hours. Here, surface temperatures
   in the lower 30s F beneath a substantial warm nose (around 6-7C
   around 800-850 mb per 00Z soundings) will generally support freezing
   rain. A strengthening low-level jet (and related frontogenesis)
   combined with ascent preceding the midlevel wave will favor freezing
   rain rates of 0.05-0.1 inch per 3 hours in some locations. The
   heaviest rates will generally spread from west to east into the
   morning hours, with the longest duration of freezing rain expected
   over northern WI.

   ..Weinman.. 03/30/2025

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

   ATTN...WFO...MQT...GRB...DLH...ARX...MPX...

   LAT...LON   45289336 45029416 44819494 44969523 45319528 45699474
               45999395 46199237 46269094 46318993 46188852 46018780
               45738751 45198772 44598855 44538909 44708978 45349071
               45499135 45549204 45289336