SPC MD 1502



MD 1502 CONCERNING SEVERE POTENTIAL…WATCH UNLIKELY FOR A LARGE PORTION OF ILLINOIS

MD 1502 Image


Mesoscale Discussion 1502
NWS Storm Prediction Center Norman OK
0440 PM CDT Sat Aug 15 2020

Areas affected...A large portion of Illinois

Concerning...Severe potential...Watch unlikely 

Valid 152140Z - 152315Z

Probability of Watch Issuance...20 percent

SUMMARY...Isolated damaging wind gusts are possible for a few hours
this evening.

DISCUSSION...Storms have started to form along a cold front moving
through Illinois. Temperatures are in the mid 80s with dewpoints in
the upper 60s to near 70 ahead of this line yielding MLCAPE around
1500 to 2500 J/kg. Storms will likely remain cellular along the
front given the weak convergence along the boundary. The KILX VWP
shows around 30 knots of westerly flow at 5km which yields effective
shear around 25 to 30 kts. This should be sufficient for multicell
and marginal supercell storm mode. Weak flow should limit the
overall wind threat, but an occasional damaging wind gust cannot be
ruled out.

..Bentley/Guyer.. 08/15/2020

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

ATTN...WFO...LOT...ILX...MKX...LSX...DVN...

LAT...LON   39599087 40918956 41918881 42538819 42668783 42148762
            41858756 41618727 39988787 38748879 38578991 38959074
            39599087 

Read more



Source link

Editor
  • Editor
  • Website is owned by STL.News, LLC, but hosted, designed and maintained by WebTech Group (WTG). WTG is a St. Louis based web designed firm offering digital marketing services and news sites. We created RSSWX.News to help the major search engines easily find news direct from the source, which is the National Weather Service.