Severe Storm Outlook Narrative (AC)
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000
ACUS11 KWNS 241548
SWOMCD
SPC MCD 241547
OHZ000-KYZ000-INZ000-241645-

Mesoscale Discussion 0827
NWS Storm Prediction Center Norman OK
1047 AM CDT Wed May 24 2017

Areas affected...Portions of eastern Indiana and western Ohio

Concerning...Severe potential...Watch unlikely

Valid 241547Z - 241645Z

Probability of Watch Issuance...5 percent

SUMMARY...Scattered thunderstorms are developing in the discussion
area at this time and may pose a very isolated severe threat over
the course of the afternoon.  A WW issuance is unlikely at this
time.

DISCUSSION...Scattered thunderstorms have developed in response to
surface convergence along a trough across central Indiana southward
into central Kentucky.  These storms are in an environment
containing marginal lapse rates and fairly moist thermodynamic
profiles, although breaks in the cloud cover (noted on satellite
imagery) and resultant insolation is aiding in surface temperatures
nearing 70F while resulting in 500-1250 J/kg MUCAPE.  Low-level
shear is very weak in the region, although some veering of the flow
with height may aid in storm organization and brief rotation, with
perhaps an isolated tornado in/near any updraft that can sustain
rotation.  This threat will be very isolated - and a WW issuance is
not anticipated for this activity.

..Cook/Kerr.. 05/24/2017

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

ATTN...WFO...CLE...ILN...IWX...IND...

LAT...LON   40338588 40748575 41188539 41358484 41298418 40808357
            39988355 39458367 39048390 38898439 38918494 39058537
            39528570 40338588



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