Click-to-scroll-up Image
Skip Navigation Links 
NOAA logo-Select to go to the NOAA homepage NOAA's National Weather Service   Select to go to the NWS homepage
Storm Prediction Center
navigation bar left  
  navigation bar end cap is the U.S. Government's official Web portal to all Federal, state and local government Web resources and services.

Mesoscale Discussion 102
< Previous MD         Next MD >
MD 102 graphic

   Mesoscale Discussion 0102
   NWS Storm Prediction Center Norman OK
   1144 PM CST Tue Jan 24 2023

   Areas affected...southern portions of IL...IN...and OH

   Concerning...Heavy snow 

   Valid 250544Z - 251145Z

   SUMMARY...Broad precipitation will continue to overspread the region
   from around 06-12z. Localized heavy snowfall rates greater than
   1"/hr will be possible.

   DISCUSSION...The low-level precipitation field continues to expand
   in advance of a negatively tilted upper-level trough ejecting over
   the central CONUS. Snowfall rates of 1"/hr have been reported from
   eastern OK northeastward through southeastern MO, and in some areas
   localized snowfall rates around 2"/hr have been observed. The broad
   precipitation band responsible for these snowfall rates continues to
   translate northeastward in tandem with 700-mb frontogenesis and
   mesoscale isentropic ascent. These features are expected to persist
   for the next several hours and produce 1"/hr snowfall rates through
   12z, generally advancing from west to east across the outlined area.
   Snowfall rates of 2"/hr or greater will be possible in localized
   areas where enhanced forcing overlaps non-zero potential buoyancy
   (10-20 J/kg MUCAPE) in the dendritic growth zone.

   ..Flournoy/Moore.. 01/25/2023

   ...Please see for graphic product...


   LAT...LON   37198956 37399036 37929051 38469002 39188841 39818684
               40478462 40608266 40298174 39718176 39148221 38908311
               38748421 38478545 38188653 37648835 37198956 

Top/All Mesoscale Discussions/Forecast Products/Home
Weather Topics:
Watches, Mesoscale Discussions, Outlooks, Fire Weather, All Products, Contact Us

NOAA / National Weather Service
National Centers for Environmental Prediction
Storm Prediction Center
120 David L. Boren Blvd.
Norman, OK 73072 U.S.A.
Page last modified: January 25, 2023
Information Quality
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities