Alert archive / Colorado / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 256, NWS Denver/Boulder, CO

September 5, 2019Weld County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Sep 5, 2019, 9:18 PM MDT for Weld County, Colorado. It was in force for 27 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: Sep 5, 2019, 9:18 PM MDT (03:18 UTC)
Expired: Sep 5, 2019, 9:45 PM MDT
In force: 27 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Weld County, CO

The radar

The Cheyenne radar (KCYS), 75 km from the middle of the area, began a volume at 03:17 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 Sep 5, 8:36 PM MDT, 42 minutes earlier.

Area forecast discussion, Sep 5, 8:36 PM MDT, 42 minutes before

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Hazardous weather outlook, Sep 5, 11:13 AM MDT, 10 hours 5 minutes before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 5, 9:41 PM MDT	Severe Thunderstorm Warning	BOU	Weld	34 min
Sep 5, 9:44 PM MDT	Special Weather Statement	BOU	Weld	46 min
Sep 5, 10:28 PM MDT	Special Weather Statement	BOU	Weld	47 min
Sep 5, 10:50 PM MDT	Special Weather Statement	BOU	Morgan	40 min
Sep 5, 11:27 PM MDT	Special Weather Statement	BOU	Morgan	48 min
Sep 6, 1:40 PM MDT	Special Weather Statement	BOU	Gilpin	50 min
Sep 6, 2:02 PM MDT	Severe Thunderstorm Warning	BOU	Clear Creek, Gilpin, Jefferson	43 min
Sep 6, 2:09 PM MDT	Areal Flood Advisory	BOU	Larimer	81 min
Sep 6, 2:44 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe, Denver, Jefferson	46 min
Sep 6, 3:26 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe, Douglas, Jefferson	34 min
Sep 6, 3:42 PM MDT	Special Weather Statement	BOU	Douglas	33 min
Sep 6, 3:59 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe, Denver, Douglas	46 min
Sep 6, 4:01 PM MDT	Flash Flood Warning	BOU	Arapahoe, Douglas	89 min
Sep 6, 4:10 PM MDT	Tornado Warning	BOU	Arapahoe	21 min
Sep 6, 4:13 PM MDT	Areal Flood Advisory	BOU	Douglas, Jefferson	92 min
Sep 6, 4:43 PM MDT	Areal Flood Advisory	BOU	Adams, Arapahoe	68 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2019 Every severe thunderstorm warning in 2019

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.