A few rounds of strong to marginally-severe thunderstorms affected this six-county North Central Kansas area between the pre-dawn and late afternoon hours on this Sunday. However, this event fell short of forecast expectations in terms of potential coverage/intensity of severe weather, yielding only a few reports of quarter size hail at Ionia (mid-morning) and near Natoma (mid-afternoon). As for how the day played out, this seemed to be a case where factors such as the presence of stubborn early-day convection, along with afternoon development initiating fairly early and in widespread fashion, combined to hinder appreciable airmass destabilization/recovery and thus tempered the magnitude of the potential severe threat (SPC assigned Enhanced Risk to North Central Kansas on Day 1 outlooks).
The first sign of potential complications showed its hand well-before sunrise, as a long-lived round of at least slightly-elevated storms initiated between 2-3 a.m. CDT over Phillips/Rooks/Osborne counties. Over the course of the next 11 hours or so (all the way into early afternoon) this activity evolved into a narrow/broken, north-south oriented band that slid eastward at a snail's pace as new cells continuously regenerated on its western flank. The majority of these storms were sub-severe, producing only small hail, but between 9 a.m. and noon CDT a few cores over Jewell/Mitchell counties pulsed up to severe levels per radar data and the lone ground-truth report of quarters at Ionia. At long last, this early-day convection finally (mostly) exited the local area around 1 p.m. CDT. However, because it had persisted so long into the day, it laid out an outflow boundary/effective warm front near the far southern edges of the local area. Thanks to afternoon heating and meager capping, it did not take long for several strong/severe storms to erupt within a few counties either side of the Interstate 70 corridor between 2-4 p.m. CDT. This resulted in considerable storm coverage across mainly Rooks/Osborne/Mitchell counties, but the only ground-truth severe report was quarter size hail near Natoma. Between 4-6 p.m. CDT, other strong storms moved up into Phillips County from the southwest. However, given that so much convection developed over the local area in a short time, along with the fact that a large severe complex had taken center stage in central/southwestern KS, storm intensity/coverage within North Central Kansas steadily dwindled and the area was all but storm-free by 7 p.m. CDT. Not surprisingly given the forecast expectations, the general synoptic setup appeared rather potent for severe storms. In the mid-upper levels, broad west-northwest flow prevailed over the Central Plains as a series of embedded disturbances rotated around the south side of a large-scale trough/closed low over south central Canada. At the surface, North Central Kansas resided southeast of a quasi-stationary front draped from northwest KS into northern NE. Prior to the eruption of mid-afternoon convection, mixed-layer CAPE reached 2000-4000 J/kg in the presence of 30-40 knots of deep-layer wind shear.

Hail in JEWELL, KANSAS
From 21-JUN-20 09:15:00 to 21-JUN-20 09:15:00 (CST-6)
Location: IONIA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Hail in OSBORNE, KANSAS
From 21-JUN-20 13:52:00 to 21-JUN-20 13:52:00 (CST-6)
Location: NATOMA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public