Alert archive / Colorado / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 209, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 10, 2025, 1:51 PM MDT for 6 counties in Colorado. It was in force for 39 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 10, 2025, 1:51 PM MDT (19:51 UTC)
- Expired
- Jul 10, 2025, 2:30 PM MDT
- In force
- 39 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, Boulder County, CO, Broomfield County, CO, Denver County, CO, Jefferson County, CO
The radar
The Denver radar (KFTG), 28 km from the middle of the area, began a volume at 19:53 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 10, 12:55 PM MDT, 56 minutes earlier.
Area forecast discussion, Jul 10, 12:55 PM MDT, 56 minutes before
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</html>Hazardous weather outlook, Jul 10, 11:52 AM MDT, 1 hour 59 minutes before
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</html>In the hours before
Special weather statement, Jul 10, 11:59 AM MDT, 1 hour 52 minutes before
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The site you requested is temporarily down for maintenance or an unexpected outage.
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Please try again in a few minutes.
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</html>Special weather statement, Jul 10, 12:43 PM MDT, 1 hour 8 minutes before
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The site you requested is temporarily down for maintenance or an unexpected outage.
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If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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</html>Special weather statement, Jul 10, 12:45 PM MDT, 1 hour 6 minutes before
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
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If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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</html>Special weather statement, Jul 10, 1:14 PM MDT, 37 minutes before
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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</html>Special weather statement, Jul 10, 1:32 PM MDT, 19 minutes before
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<body>
<main class="wrap">
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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</html>Special weather statement, Jul 10, 1:42 PM MDT, 9 minutes before
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<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
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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 9, 7:01 PM MDT | Special Weather Statement | BOU | Broomfield | 29 min |
| Jul 9, 7:27 PM MDT | Special Weather Statement | BOU | Broomfield | 48 min |
| Jul 10, 1:36 AM MDT | Red Flag Warning | BOU | Park | 18 hr |
| Jul 10, 4:06 AM MDT | Severe Thunderstorm Warning | BOU | Adams, Denver | 24 min |
| Jul 10, 11:59 AM MDT | Special Weather Statement | BOU | Arapahoe | 31 min |
| Jul 10, 12:43 PM MDT | Special Weather Statement | BOU | Douglas | 32 min |
| Jul 10, 12:45 PM MDT | Special Weather Statement | BOU | Denver | 30 min |
| Jul 10, 1:14 PM MDT | Special Weather Statement | BOU | Arapahoe | 31 min |
| Jul 10, 1:32 PM MDT | Special Weather Statement | BOU | Broomfield, Gilpin, Jefferson | 28 min |
| Jul 10, 1:42 PM MDT | Special Weather Statement | BOU | Elbert | 33 min |
| Jul 10, 2:03 PM MDT | Special Weather Statement | BOU | Elbert | 42 min |
| Jul 10, 2:12 PM MDT | Special Weather Statement | BOU | Lincoln | 48 min |
| Jul 10, 2:28 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 47 min |
| Jul 10, 3:00 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Elbert | 45 min |
| Jul 10, 4:06 PM MDT | Special Weather Statement | BOU | Logan | 24 min |
| Jul 10, 4:08 PM MDT | Special Weather Statement | BOU | Lincoln | 52 min |
| Jul 10, 4:17 PM MDT | Special Weather Statement | BOU | Weld | 28 min |
| Jul 10, 4:54 PM MDT | Special Weather Statement | BOU | Weld | 51 min |
| Jul 10, 4:56 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 34 min |
| Jul 10, 5:27 PM MDT | Special Weather Statement | BOU | Morgan | 33 min |
| Jul 10, 5:47 PM MDT | Special Weather Statement | BOU | Washington | 28 min |
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; radar from the NEXRAD Level II archive.