Alert archive / Colorado / Tornado Warnings in 2026
Tornado Warning 23, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jun 24, 2026, 6:13 PM MDT for Logan County, Colorado. It was in force for 32 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 24, 2026, 6:13 PM MDT (00:13 UTC)
- Expired
- Jun 24, 2026, 6:45 PM MDT
- In force
- 32 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Tornado
- Observed
- Hail
- 2.75 in
County Logan County, CO
The radar
The Cheyenne radar (KCYS), 172 km from the middle of the area, began a volume at 00:12 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 24, 6:13 PM MDT | TORNADO | 2 Se Proctor, CO | |
| Jun 24, 6:25 PM MDT | TORNADO | 2 Nnw Fleming, CO | Tornado confirmed by the fire department. |
| Jun 24, 6:30 PM MDT | TORNADO | Fleming, CO |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched 3 storm reports to this tornado warning; the first came 0 minutes after it went out.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 24, 3:50 PM MDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.2 hours before the alert went out and 192 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 688 J/kg
- Mixed-layer CIN
- -58 J/kg
- Mixed-layer LCL
- 1325 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- -57 m²/s²
- 0-3 km storm-relative helicity
- 206 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 6.4
The text
As transmitted.
326
WFUS55 KBOU 250013
TORBOU
COC075-250045-
/O.NEW.KBOU.TO.W.0023.260625T0013Z-260625T0045Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Denver CO
613 PM MDT Wed Jun 24 2026
The National Weather Service in Denver has issued a
* Tornado Warning for...
East Central Logan County in northeastern Colorado...
* Until 645 PM MDT.
* At 613 PM MDT, a confirmed tornado was located 5 miles northwest of
Fleming, or 19 miles northeast of Sterling, moving southeast at 15
mph.
HAZARD...Damaging tornado and baseball size hail.
SOURCE...Law enforcement confirmed tornado.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows and vehicles will occur. Tree damage is
likely.
* Locations impacted include...
Fleming and Crook.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to an interior room on the lowest floor of a well-built building
away from windows. If you are outdoors, in a mobile home, or in a
vehicle, move to the closest substantial shelter and protect yourself
from flying debris.
&&
LAT...LON 4077 10298 4086 10281 4077 10265 4075 10265
4061 10289
TIME...MOT...LOC 0013Z 321DEG 12KT 4075 10288
TORNADO...OBSERVED
MAX HAIL SIZE...2.75 IN
$$
633 follow-up statements
968
WWUS55 KBOU 250024
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
624 PM MDT Wed Jun 24 2026
COC075-250045-
/O.CON.KBOU.TO.W.0023.000000T0000Z-260625T0045Z/
Logan CO-
624 PM MDT Wed Jun 24 2026
...TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM MDT FOR EAST
CENTRAL LOGAN COUNTY...
At 624 PM MDT, a confirmed tornado was located near Fleming, or 19
miles east of Sterling, moving southeast at 15 mph.
HAZARD...Damaging tornado and three inch hail.
SOURCE...Law enforcement confirmed tornado.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Fleming and Crook.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to an interior room on the lowest floor of a well-built building
away from windows. If you are outdoors, in a mobile home, or in a
vehicle, move to the closest substantial shelter and protect yourself
from flying debris.
&&
LAT...LON 4077 10298 4086 10281 4077 10265 4075 10265
4061 10289
TIME...MOT...LOC 0013Z 324DEG 11KT 4075 10288
TORNADO...OBSERVED
MAX HAIL SIZE...3.00 IN
$$
63471
WWUS55 KBOU 250030
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
630 PM MDT Wed Jun 24 2026
COC075-250045-
/O.CON.KBOU.TO.W.0023.000000T0000Z-260625T0045Z/
Logan CO-
630 PM MDT Wed Jun 24 2026
...TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM MDT FOR EAST
CENTRAL LOGAN COUNTY...
At 630 PM MDT, a confirmed tornado was located near Fleming, or 20
miles east of Sterling, moving southeast at 15 mph.
HAZARD...Damaging tornado and tennis ball size hail.
SOURCE...Weather spotters confirmed tornado.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Fleming and Crook.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to an interior room on the lowest floor of a well-built building
away from windows. If you are outdoors, in a mobile home, or in a
vehicle, move to the closest substantial shelter and protect yourself
from flying debris.
&&
LAT...LON 4077 10298 4086 10281 4077 10265 4075 10265
4061 10289
TIME...MOT...LOC 0024Z 324DEG 11KT 4072 10285
TORNADO...OBSERVED
MAX HAIL SIZE...2.50 IN
$$
63749
WWUS55 KBOU 250038
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
638 PM MDT Wed Jun 24 2026
COC075-250048-
/O.EXP.KBOU.TO.W.0023.000000T0000Z-260625T0045Z/
Logan CO-
638 PM MDT Wed Jun 24 2026
...TORNADO WARNING WILL EXPIRE AT 645 PM MDT FOR EAST CENTRAL LOGAN
COUNTY...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
A Tornado Watch remains in effect until 1100 PM MDT Wednesday for a
portion of northeast Colorado.
&&
LAT...LON 4077 10298 4086 10281 4077 10265 4075 10265
4061 10289
TIME...MOT...LOC 0030Z 324DEG 11KT 4070 10284
$$
63What forecasters said that day
The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Denver/Boulder, CO wrote its last area forecast discussion before this tornado warning went out at Jun 24, 6:06 PM MDT, 7 minutes earlier. Its key messages:
- Numerous strong to severe thunderstorms expected today for the lower elevations, particularly late afternoon through tonight. Strongest storms may produce very large hail exceeding 2-3" in diameter.
- Additional round of strong to severe thunderstorms possible Thursday. Localized flash flood concerns will exist both Wednesday and Thursday.
- Critical fire weather conditions this afternoon in the mountains given warm, dry and breezy weather and the potential for isolated dry thunderstorms. Notably higher fire danger will develop this weekend as hotter and windier weather returns.
Area forecast discussion, Jun 24, 6:06 PM MDT, 7 minutes before
Area Forecast Discussion National Weather Service Denver/Boulder CO 606 PM MDT Wed Jun 24 2026 .KEY MESSAGES... - Numerous strong to severe thunderstorms expected today for the lower elevations, particularly late afternoon through tonight. Strongest storms may produce very large hail exceeding 2-3" in diameter. - Additional round of strong to severe thunderstorms possible Thursday. Localized flash flood concerns will exist both Wednesday and Thursday. - Critical fire weather conditions this afternoon in the mountains given warm, dry and breezy weather and the potential for isolated dry thunderstorms. Notably higher fire danger will develop this weekend as hotter and windier weather returns. && .DISCUSSION /Through Wednesday/... Issued at 147 PM MDT Wed Jun 24 2026 A rather conditional severe weather threat still exists across most of the I-25 corridor and eastern plains this afternoon. A broad belt of westerly/west-northwesterly flow aloft is evident via GOES water vapor imagery and recent RAP analysis data. Meanwhile, a well-defined surface boundary stretching from KAPA through KDEN and into southeastern Weld County. While this boundary has produced more of a shear zone than a true convergence zone, there's been plenty of differential heating along the boundary. With the DEN ASOS on the "warm" side of the boundary, we've seen T/Td reach 89/55F, with temperatures in the upper 70s to low 80s across the western Denver metro. At this point, it appears likely that we'll see a first attempt at convective initiation somewhere along the surface boundary in the next couple of hours, with better probabilities of sustained convection closer to Fort Morgan/Sterling. A recent ACARS sounding, modified to the latest DEN observation suggest only meager capping at 700-600mb remains, with ACARS and RAP Mesoanalysis showing a fairly broad area of >3000 MLCAPE stretching along and south of I-76. Combined with impressive deep layer shear, any thunderstorms that can develop this afternoon should quickly become strong to severe, with primarily a large hail threat. Hodographs have slowly become more curved as the low-level flow has increased, though overall hodographs are still relatively straight-line and would favor splitting supercells with the initial round of convection today. Still, there would be at least a brief tornado threat, especially closer to any boundary where sfc vorticity and effective SRH would be maximized. A second round of thunderstorms is expected to develop in Wyoming and move into our forecast area sometime between about 6-10 PM. This should primarily be north and east of the metro (where SPC's enhanced risk is). I would expect this to be the more significant of the two waves of convection given a weakening cap and rather impressive skew-t/hodograph combinations advertised by the WoFS. While again this threat appears to be mainly north/east of the I-25 corridor, we can't completely rule out strong to severe storms this far west. Any sort of additional push of moist outflow may be enough to break the remaining cap here, which has been shown on and off by various high resolution models. We'll see if any more meaningful trends emerge this afternoon but the threat in the Denver metro is highly conditional. A more organized round of sub-severe showers and thunderstorms is likely overnight tonight as a shortwave moves across the region. There could still be a strong storm or two left depending on how much instability lingers overnight, but the severe threat should diminish quickly after midnight. A combination of some showers, stratus, fog/mist, and haze from wildfire smoke will likely develop overnight and linger into Thursday morning. The shortwave should move across the area through Thursday, with a cooler/more stable airmass behind it. There should still be widely scattered showers and thunderstorms in the afternoon, though any severe potential will be determined by how quickly things can destabilize following the morning stratus/fog. Drier southwesterly flow aloft should develop by Friday, leading to less convection across the region. The warming/drying trend is likely to continue into the weekend as a strong upper trough advances into the Pacific Northwest region during the weekend. Strengthening mid/upper level flow is expected to bring gusty winds to most of the forecast area, with the strongest winds over the higher elevations. The combination of above normal temperatures, a dry airmass, and gusty winds will likely lead to critical fire weather conditions across a large portion of the forecast area... and Fire Weather Watches may be necessary soon. Little change is expected in the longer term forecast period as dry southwesterly flow aloft continues. && .AVIATION /00Z TAFS through 00Z Friday/... Issued at 552 PM MDT Wed Jun 24 2026 The DCVZ has been setup near KDEN for the entire afternoon and has now sloshed back to the east and northeast of KDEN bringing northwest winds for the time being. Some northeast winds could start to make it into KDEN in the next hour or so given the cyclone's movement. Short-term models remain in pretty good agreement that precipitation will likely occur at least near all three sites this evening. The latest WoFS runs and CAMs show rapid thunderstorm development between now and 2z just to the north of KDEN and moving to the south. Thus, we have now added a tempo group between 1z and 4z at KDEN and KAPA (with slightly later timing) to show the increasing confidence of thunderstorms during this time period. Thunderstorms could linger and/or redevelop through at least 8z. Gusty outflow winds of at least 30 kts will continue to remain possible with any storms near KDEN and KAPA especially. Low ceilings/fog/haze/light rain are likely to develop overnight and could last well into tomorrow morning. Ceilings could drop to as low as about 005 generally after 10z. By tomorrow afternoon, showers and thunderstorms should return to the area, but questions remain on how unstable the atmosphere will be given the low clouds likely keeping temperatures at bay at least in the morning. Have added in a prob30 for -tsra the early afternoon for now at all three sites. && .BOU WATCHES/WARNINGS/ADVISORIES... Red Flag Warning until 6 PM MDT this evening for COZ211>214-217- 218. && DISCUSSION...Hiris AVIATION...MV
In the hours before
Local storm report, Jun 24, 4:47 PM MDT, 1 hour 26 minutes before
Preliminary Local Storm Report
National Weather Service Denver CO
447 PM MDT Wed Jun 24 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0441 PM Hail 5 N Adena School 40.19N 103.79W
06/24/2026 E2.00 Inch Morgan CO Public
Report from mPING: Hen Egg (2.00 in.).
&&
AALocal storm report, Jun 24, 4:48 PM MDT, 1 hour 25 minutes before
Preliminary Local Storm Report
National Weather Service Denver CO
448 PM MDT Wed Jun 24 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0414 PM Hail 1 SW Fort Morgan 40.25N 103.80W
06/24/2026 E1.75 Inch Morgan CO Public
Report from mPING: Golf Ball (1.75 in.) Time
estimated from radar.
&&
AALocal storm report, Jun 24, 5:06 PM MDT, 1 hour 7 minutes before
Preliminary Local Storm Report
National Weather Service Denver CO
506 PM MDT Wed Jun 24 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0426 PM Tstm Wnd Gst 3 N Messex 40.46N 103.43W
06/24/2026 M61 MPH Logan CO Public
&&
AALocal storm report, Jun 24, 5:15 PM MDT, 58 minutes before
Preliminary Local Storm Report
National Weather Service Denver CO
515 PM MDT Wed Jun 24 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0508 PM Hail 1 SW Gary 40.06N 103.60W
06/24/2026 M1.50 Inch Morgan CO Public
Report from mPING: Ping Pong Ball (1.50
in.).
&&
AALocal storm report, Jun 24, 5:54 PM MDT, 19 minutes before
Preliminary Local Storm Report
National Weather Service Denver CO
554 PM MDT Wed Jun 24 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0529 PM Tstm Wnd Gst 1 NNW Akron 40.17N 103.22W
06/24/2026 M63 MPH Washington CO AWOS
AWOS station KAKO Akron.
&&
AALocal storm report, Jun 24, 5:57 PM MDT, 16 minutes before
Preliminary Local Storm Report
National Weather Service Denver CO
557 PM MDT Wed Jun 24 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0538 PM Tstm Wnd Gst 1 W Akron 40.16N 103.23W
06/24/2026 M81 MPH Washington CO Public
&&
AAThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 6:00 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 30 min |
| Jun 24, 6:17 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 43 min |
| Jun 24, 6:35 PM MDT | Tornado Warning | BOU | Weld | 40 min |
| Jun 24, 6:37 PM MDT | Tornado Warning | BOU | Logan, Phillips | 38 min |
| Jun 24, 6:54 PM MDT | Tornado Warning | BOU | Washington | 36 min |
| Jun 24, 6:58 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 31 min |
| Jun 24, 7:06 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Phillips | 17 min |
| Jun 24, 7:24 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 36 min |
| Jun 24, 7:27 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 33 min |
| Jun 24, 7:44 PM MDT | Tornado Warning | BOU | Weld | 31 min |
| Jun 24, 7:47 PM MDT | Severe Thunderstorm Warning | BOU | Boulder, Larimer, Weld | 32 min |
| Jun 24, 7:48 PM MDT | Severe Thunderstorm Warning | BOU | Sedgwick | 21 min |
| Jun 24, 8:07 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 38 min |
| Jun 24, 8:26 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 34 min |
| Jun 24, 8:35 PM MDT | Severe Thunderstorm Warning | BOU | Douglas | 29 min |
| Jun 24, 8:51 PM MDT | Severe Thunderstorm Warning | BOU | Phillips, Sedgwick | 39 min |
| Jun 24, 8:54 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 51 min |
| Jun 24, 8:59 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Washington | 33 min |
| Jun 24, 9:06 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 39 min |
| Jun 24, 9:07 PM MDT | Areal Flood Advisory | BOU | Logan, Morgan, Washington | 2 hr |
| Jun 24, 9:18 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 42 min |
| Jun 24, 9:26 PM MDT | Severe Thunderstorm Warning | BOU | Clear Creek, Jefferson | 49 min |
| Jun 24, 9:26 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 34 min |
| Jun 24, 9:30 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe | 45 min |
| Jun 24, 9:31 PM MDT | Severe Thunderstorm Warning | BOU | Adams | 24 min |
| Jun 24, 9:36 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Washington | 39 min |
| Jun 24, 9:59 PM MDT | Areal Flood Advisory | BOU | Morgan, Washington | 3 hr |
| Jun 24, 10:01 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Denver, Douglas, Jefferson | 29 min |
| Jun 24, 10:03 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln, Washington | 42 min |
| Jun 24, 10:08 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert | 35 min |
| Jun 24, 10:11 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 33 min |
| Jun 24, 11:01 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe | 21 min |
| Jun 25, 12:18 AM MDT | Fire Weather Watch | BOU | Boulder, Clear Creek, Gilpin, Grand, Jackson, Larimer and 2 more | 24 hr |
| Jun 25, 2:15 AM MDT | Areal Flood Advisory | BOU | Jefferson | 65 min |
| Jun 25, 2:54 AM MDT | Areal Flood Warning | BOU | Jefferson | 3 hr |
| Jun 25, 1:35 PM MDT | Special Weather Statement | BOU | Douglas | 40 min |
| Jun 25, 2:16 PM MDT | Special Weather Statement | BOU | Elbert | 44 min |
| Jun 25, 5:55 PM MDT | Severe Thunderstorm Warning | BOU | Larimer, Weld | 50 min |
Nearby
Tornado Warnings in Colorado, 2026Every tornado warning in 2026Tornadoes in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.