Click-to-scroll-up Image
Skip Navigation Links weather.gov 
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


 
USA.gov is the U.S. Government's official Web portal to all Federal, state and local government Web resources and services.

Mesoscale Discussion 557
< Previous MD         Next MD >
MD 557 graphic

   Mesoscale Discussion 0557
   NWS Storm Prediction Center Norman OK
   1232 AM CDT Sun Apr 28 2024

   Areas affected...northwest AR and eastern OK into north TX

   Concerning...Severe potential...Watch likely 

   Valid 280532Z - 280700Z

   Probability of Watch Issuance...95 percent

   SUMMARY...A QLCS will continue to gradually shift east with time
   overnight. A new watch or two will likely be needed in the next hour
   for parts of northwest Arkansas, eastern Oklahoma and north Texas.

   DISCUSSION...A mature QLCS extending from northeast OK into central
   TX is gradually shifting east, though individual convective elements
   within the line are moving more northeast. Most discrete supercells
   ahead of the line earlier this evening have now merged with the
   QLCS, though some potential still exists for an isolated pre-QLCS
   supercell to develop from far north TX into southeast OK.  A strong
   southerly low-level jet is contributing to enlarged, curved
   hodographs and 0-1 km SRH around 200-400 m2/s2. This should continue
   to support rotation/mesovortex development and tornado potential the
   next several hours. Damaging wind to 70 mph also will be possible in
   additional to tornado potential.

   ..Leitman/Thompson.. 04/28/2024

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

   ATTN...WFO...LZK...SHV...TSA...FWD...OUN...SJT...

   LAT...LON   36489347 35049415 33279539 32339638 31979720 31809834
               31969896 33059792 34489579 36499457 36489347 

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.
spc.feedback@noaa.gov
Page last modified: May 27, 2024
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities