Alert archive / Colorado / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 242, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 9, 2026, 3:45 PM MDT for 4 counties in Colorado. It was in force for 45 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
- Jul 9, 2026, 3:45 PM MDT (21:45 UTC)
- Expired
- Jul 9, 2026, 4:30 PM MDT
- In force
- 45 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Hail
- 0.0 in
- Wind
- 60.0 mph
Counties Adams County, CO, Arapahoe County, CO, Denver County, CO, Weld County, CO
The radar
The Denver radar (KFTG), 20 km from the middle of the area, began a volume at 21:47 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 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 Jul 8, 5:48 PM MDT, 21 hours 57 minutes earlier.
Area forecast discussion, Jul 8, 5:48 PM MDT, 21 hours 57 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 |
|---|---|---|---|---|
| Jul 8, 6:05 PM MDT | Special Weather Statement | BOU | Washington | 40 min |
| Jul 8, 6:22 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 38 min |
| Jul 8, 6:26 PM MDT | Areal Flood Advisory | BOU | Adams, Arapahoe | 2 hr |
| Jul 8, 6:59 PM MDT | Special Weather Statement | BOU | Washington | 31 min |
| Jul 8, 7:07 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 38 min |
| Jul 8, 10:49 PM MDT | Special Weather Statement | BOU | Sedgwick | 26 min |
| Jul 9, 2:21 PM MDT | Special Weather Statement | BOU | Boulder | 24 min |
| Jul 9, 2:30 PM MDT | Special Weather Statement | BOU | Gilpin | 45 min |
| Jul 9, 2:56 PM MDT | Special Weather Statement | BOU | Weld | 34 min |
| Jul 9, 2:59 PM MDT | Special Weather Statement | BOU | Denver | 31 min |
| Jul 9, 3:18 PM MDT | Special Weather Statement | BOU | Broomfield | 27 min |
| Jul 9, 3:40 PM MDT | Special Weather Statement | BOU | Denver | 50 min |
| Jul 9, 3:53 PM MDT | Special Weather Statement | BOU | Weld | 37 min |
| Jul 9, 4:05 PM MDT | Special Weather Statement | BOU | Arapahoe | 40 min |
| Jul 9, 4:10 PM MDT | Special Weather Statement | BOU | Lincoln | 50 min |
| Jul 9, 4:37 PM MDT | Special Weather Statement | BOU | Logan | 38 min |
| Jul 9, 4:43 PM MDT | Special Weather Statement | BOU | Lincoln | 47 min |
| Jul 9, 4:54 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 36 min |
| Jul 9, 5:23 PM MDT | Special Weather Statement | BOU | Morgan | 52 min |
| Jul 9, 5:26 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Morgan, Washington | 34 min |
| Jul 9, 5:32 PM MDT | Special Weather Statement | BOU | Logan | 43 min |
| Jul 9, 5:41 PM MDT | Special Weather Statement | BOU | Washington | 49 min |
| Jul 9, 5:44 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 31 min |
| Jul 9, 5:48 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Washington | 42 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 2026Every severe thunderstorm warning 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; radar from the NEXRAD Level II archive.