Day 1 Outlook Day 2 Outlook Day 3 Outlook Days 4-8 Outlook

Day 1 Outlook Convective Tornado
Hail Wind
Categorical Day1 0100Z Outlook
  
Images courtesy of the NWS Storm Prediction Center
 Forecast Discussion

  
189 
ACUS01 KWNS 190054
SWODY1
SPC AC 190053

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
0753 PM CDT Mon Jun 18 2018

Valid 190100Z - 191200Z

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF
THE CENTRAL PLAINS AND MID MO VALLEY...

...SUMMARY...
Isolated severe thunderstorms are expected this evening across the
central High Plains, Mid-Missouri Valley, and portions of southern
New England and the northern Middle Atlantic.

...Central High Plains...

Deep convection is finally developing along the Front Range of CO
where moist upslope flow has persisted for much of the day. Delayed
heating has slowed this development but 19/00z sounding from DNR
suggests ample buoyancy and shear exists for sustained rotating
updrafts. Isolated supercells are expected across portions of
northeast CO into southeast WY and hail is the primary threat.

...Mid-MO Valley...

Complex convective scenario continues across eastern NE into western
IA ahead of a weak mid-level short-wave trough that is ejecting
northeast into this region. Considerable amount of precipitation and
convective outflow has overturned much of the instability across
this part of the country, although strong instability persists in
the wake of the short wave immediately ahead of the surface front.
Frontal convergence, aided by outflow interactions may contribute to
isolated severe across this area.

...Northern Middle Atlantic and southern New England...

Pre-frontal bands of convection have migrated across much of the
Northeast, overturning the buoyancy necessary for severe
thunderstorms. While synoptic front will soon advance south of the
international border, severe thunderstorms are not expected along
this boundary as it surges southeast. Strongest convection over the
next few hours will be along the southern New England coast, arcing
into central PA where instability is currently sufficient for the
maintenance of robust updrafts.

..Darrow.. 06/19/2018

$$