DENVER, CO — A supercell thunderstorm producing large hail is being tracked near Kim, Colorado, as forecasters report an overall increase in shower and storm activity across the high mountains and southeast Wyoming today. This uptick in convective weather is occurring as moisture slowly increases from the southwest ahead of a cold front expected to move through the region tomorrow.
Supercell Near Kim Produces Large Hail
Radar imagery shows a well-defined supercell thunderstorm positioned near Kim, in southeastern Colorado, displaying the kind of intense, organized structure typically associated with large hail production. This storm appears as a distinct, more concentrated cell compared to the broader scattered activity affecting other parts of the region, consistent with a mature supercell capable of sustaining severe hail production over an extended period.
The storm’s position near Kim places it within a broader zone of active weather extending from La Junta southward toward the Colorado-New Mexico-Oklahoma border region, an area highlighted as seeing some of the day’s more organized and potentially severe storm activity.
Mountain Areas See Increasing Shower and Storm Coverage
Beyond the supercell near Kim, forecasters noted a broader increase in shower and thunderstorm activity across the high mountains of Colorado, with radar showing scattered cells developing near Aspen, Paonia, Montrose, and Telluride in the southwestern mountain region. This mountain activity appears more scattered and isolated compared to the more organized supercell farther east, consistent with typical afternoon convective development driven by terrain-based lift.
Additional mountain activity is visible near Steamboat Springs and Kremmling, suggesting the increase in shower and storm coverage extends across a fairly broad swath of Colorado’s higher terrain rather than being confined to a single mountain range or region.
Southeast Wyoming Also Sees Elevated Activity
The zone of increasing storm activity extends north into southeast Wyoming, with radar showing organized storm cells near Wheatland, Glendo, and Scottsbluff, some displaying lightning strike indicators suggesting these cells have developed sufficient intensity to produce active thunderstorms. This activity appears concentrated in a corridor stretching from the Wyoming-Nebraska border area southward toward Cheyenne and the northern Colorado Front Range.
The presence of multiple areas of organized storm development, both in the mountains and across southeast Wyoming, reflects the broader atmospheric pattern favoring increased convective activity as moisture continues advecting into the region ahead of tomorrow’s approaching front.
Southwest Moisture Surge Fuels Today’s Activity
Forecasters specifically attributed today’s increase in shower and storm activity to moisture slowly increasing from the southwest, a pattern that is providing the atmospheric fuel necessary for the scattered mountain storms, the southeast Wyoming activity, and the more organized supercell near Kim. This gradual moisture increase is occurring specifically ahead of a cold front forecast to move through the region tomorrow.
The timing of this moisture surge, arriving a day ahead of the frontal passage, is a common precursor pattern that often sets the stage for increasingly active weather as the atmosphere becomes progressively more unstable and moisture-rich in the hours before a front’s arrival.
Tomorrow’s Cold Front Looms on the Horizon
With a cold front expected to move through the region tomorrow, today’s increasing shower and storm activity may represent just the beginning of a more significant multi-day period of unsettled weather across Colorado and Wyoming. The frontal passage itself often brings its own distinct round of weather impacts, separate from the pre-frontal activity currently being observed today.
Residents across the region should anticipate that today’s pattern of scattered mountain storms, southeast Wyoming activity, and the organized supercell near Kim could evolve further as the approaching front interacts with the moisture already in place across the area.
What Residents Should Expect
Residents across southeastern Colorado, particularly near Kim and La Junta, should remain alert for the possibility of large hail given the confirmed supercell in that area, while those across the mountain regions and southeast Wyoming should expect continued scattered shower and thunderstorm activity through the remainder of the day. With a cold front approaching for tomorrow, continued monitoring of forecast updates will be important as the broader weather pattern continues to evolve.
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