Alert archive / Colorado / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 285, NWS Denver/Boulder, CO

September 15, 2024Weld County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Sep 15, 2024, 3:02 PM MDT for Weld County, Colorado. It was in force for 28 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 15, 2024, 3:02 PM MDT (21:02 UTC)
Expired: Sep 15, 2024, 3:30 PM MDT
In force: 28 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 21:06 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 15, 12:30 PM MDT, 2 hours 32 minutes earlier.

Area forecast discussion, Sep 15, 12:30 PM MDT, 2 hours 32 minutes before

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Hazardous weather outlook, Sep 15, 10:43 AM MDT, 4 hours 19 minutes before

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1043 AM MDT Sun Sep 15 2024

COZ030>051-161645-
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-
1043 AM MDT Sun Sep 15 2024

This hazardous weather outlook is for northeast and north central
Colorado.

.DAY ONE...Today and Tonight

Scattered to isolated high-based showers and thunderstorms with
gusty winds up to 45 mph are possible this afternoon and early
evening, mainly over the higher terrain and adjacent plains.
There is a low chance that the isolated storms over the far
northeast corner could produce severe wind gusts and some hail.
Rainfall will be light with the showers and thunderstorms.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

There will be a slight chance for a strong to severe thunderstorm
over far northeast Colorado Monday. It will be windy across parts
of the plains Monday and on Tuesday widespread windy conditions
are expected. A storm system increases moisture over the area
Tuesday with scattered thunderstorms expected. Some of the storms
could produce strong to severe winds, mainly over the plains.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 15, 3:21 PM MDT	Special Weather Statement	BOU	Adams	39 min
Sep 15, 3:28 PM MDT	Severe Thunderstorm Warning	BOU	Weld	32 min
Sep 15, 3:59 PM MDT	Special Weather Statement	BOU	Weld	46 min
Sep 15, 5:10 PM MDT	Special Weather Statement	BOU	Weld	50 min
Sep 15, 5:11 PM MDT	Special Weather Statement	BOU	Weld	49 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2024 Every severe thunderstorm warning in 2024

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.