Alert archive / Colorado / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 284, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Aug 4, 2025, 7:58 PM MDT for Lincoln County, Colorado. It was in force for 20 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 4, 2025, 7:58 PM MDT (01:58 UTC)
- Expired
- Aug 4, 2025, 8:18 PM MDT
- In force
- 20 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Lincoln County, CO
The radar
The Pueblo radar (KPUX), 82 km from the middle of the area, began a volume at 01:58 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 4, 3:03 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Dodge City, (KDDC), launched 00:00Z, 2.0 hours before the alert went out and 343 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
- 924 J/kg
- Mixed-layer CIN
- -138 J/kg
- Mixed-layer LCL
- 1630 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.2
What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Aug 4, 5:19 PM MDT, 2 hours 39 minutes earlier.
Area forecast discussion, Aug 4, 5:19 PM MDT, 2 hours 39 minutes before
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</html>Hazardous weather outlook, Aug 4, 9:05 AM MDT, 10 hours 53 minutes before
Hazardous Weather Outlook National Weather Service Denver/Boulder CO 905 AM MDT Mon Aug 4 2025 COZ030>051-051515- Jackson County Below 9000 Feet- West Jackson and West Grand Counties Above 9000 Feet- Grand and Summit Counties Below 9000 Feet- South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Central and Southeast Park County- Larimer County Below 6000 Feet/Northwest Weld County- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Elbert/Central and East Douglas Counties Above 6000 Feet- Northeast Weld County-Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- Logan County-Washington County-Sedgwick County-Phillips County- 905 AM MDT Mon Aug 4 2025 This hazardous weather outlook is for northeast and north central Colorado. .DAY ONE...Today and Tonight A couple severe thunderstorms will be possible over the northeast plains of Colorado late this afternoon and evening. The main threat will be along and east of a line from Sterling to Akron. Severe storms would be capable of producing damaging winds up to 70 mph and large hail. Fire danger will be elevated today due to hot and dry weather, and breezy winds at times. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Critical fire weather conditions will be possible over the mountains and high valleys Tuesday as winds increase in a hot and dry airmass. That hot and dry airmass will remain over the area through most of this week. .SPOTTER INFORMATION STATEMENT... Spotter activation may be required over the northeast plains 5 pm to 9 pm this evening.
In the hours before
Local storm report, Aug 4, 6:17 PM MDT, 1 hour 41 minutes before
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</html>Local storm report, Aug 4, 6:23 PM MDT, 1 hour 35 minutes before
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</html>Local storm report, Aug 4, 6:50 PM MDT, 1 hour 8 minutes before
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</html>Local storm report, Aug 4, 7:11 PM MDT, 47 minutes before
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</html>Local storm report, Aug 4, 7:15 PM MDT, 43 minutes before
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</html>Local storm report, Aug 4, 7:40 PM MDT, 18 minutes before
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</html>The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 6:01 PM MDT | Areal Flood Advisory | BOU | Washington | 3 hr |
| Aug 4, 6:31 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 44 min |
| Aug 4, 7:15 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 45 min |
| Aug 4, 8:13 PM MDT | Areal Flood Advisory | BOU | Lincoln | 3 hr |
| Aug 4, 8:43 PM MDT | Special Weather Statement | BOU | Broomfield, Denver | 47 min |
| Aug 5, 1:45 PM MDT | Heat Advisory | BOU | Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 3 more | 53 hr |
| Aug 5, 2:04 PM MDT | Red Flag Warning | BOU | Boulder, Grand, Jackson, Larimer, Summit | 30 hr |
Nearby
Severe Thunderstorm Warnings in Colorado, 2025Every severe thunderstorm warning in 2025
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.