Alert archive / Colorado / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 232, NWS Denver/Boulder, CO

July 14, 2025Adams County, Arapahoe County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 14, 2025, 4:04 PM MDT for Adams County, Arapahoe County, Colorado. It was in force for 41 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 14, 2025, 4:04 PM MDT (22:04 UTC)
Expired: Jul 14, 2025, 4:45 PM MDT
In force: 41 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Adams County, CO, Arapahoe County, CO

The radar

The Denver radar (KFTG), 18 km from the middle of the area, began a volume at 22:08 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 nearest sounding before it

Dodge City, (KDDC), launched 12:00Z, 10.1 hours before the alert went out and 444 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 14 J/kg
Mixed-layer CIN: -507 J/kg
Mixed-layer LCL: 1682 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 82 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

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 14, 2:39 PM MDT, 1 hour 25 minutes earlier.

Area forecast discussion, Jul 14, 2:39 PM MDT, 1 hour 25 minutes before

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Hazardous weather outlook, Jul 14, 7:36 AM MDT, 8 hours 28 minutes before

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
736 AM MDT Mon Jul 14 2025

COZ030>051-151345-
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-
736 AM MDT Mon Jul 14 2025

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

.DAY ONE...Today and Tonight

It will be another hot day today with scattered showers and storms
expected across the higher elevations this afternoon, spreading
across the I-25 corridor into the evening. Storms will be capable
of producing small hail, lightning, and gusty outflow winds up to
50 mph.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

An active pattern will continue through the long term period,
with afternoon showers and storms developing over the high country
each afternoon, and hot temperatures across the plains. By
Wednesday, a brief cooldown is expected as a shortwave and
associated cold front pass across the forecast area. Widespread
showers and storms will be possible with this system, and with
increasing westerly flow aloft and PWATs expected to increase to
between 130%-160% above normal, some of these storms will be
capable of producing heavy rainfall, with an isolated threat for
some becoming severe.

High temperatures will return to the 90s on Friday, remaining
there through the forecast period.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

In the hours before

Special weather statement, Jul 14, 2:39 PM MDT, 1 hour 25 minutes before

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Special weather statement, Jul 14, 2:51 PM MDT, 1 hour 13 minutes before

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Local storm report, Jul 14, 2:59 PM MDT, 1 hour 5 minutes before

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Special weather statement, Jul 14, 3:14 PM MDT, 50 minutes before

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Special weather statement, Jul 14, 3:21 PM MDT, 43 minutes before

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Special weather statement, Jul 14, 3:42 PM MDT, 22 minutes before

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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
Jul 13, 6:24 PM MDT	Special Weather Statement	BOU	Park	36 min
Jul 13, 7:31 PM MDT	Areal Flood Advisory	BOU	Grand	3 hr
Jul 13, 10:47 PM MDT	Special Weather Statement	BOU	Broomfield, Denver	28 min
Jul 14, 12:23 PM MDT	Special Weather Statement	BOU	Park	37 min
Jul 14, 1:47 PM MDT	Special Weather Statement	BOU	Douglas	28 min
Jul 14, 2:39 PM MDT	Special Weather Statement	BOU	Douglas	36 min
Jul 14, 2:51 PM MDT	Special Weather Statement	BOU	Arapahoe	24 min
Jul 14, 3:14 PM MDT	Special Weather Statement	BOU	Arapahoe	31 min
Jul 14, 3:21 PM MDT	Special Weather Statement	BOU	Elbert	39 min
Jul 14, 3:42 PM MDT	Special Weather Statement	BOU	Arapahoe	48 min
Jul 14, 3:46 PM MDT	Severe Thunderstorm Warning	BOU	Elbert	44 min
Jul 14, 4:18 PM MDT	Special Weather Statement	BOU	Weld	42 min
Jul 14, 4:25 PM MDT	Severe Thunderstorm Warning	BOU	Elbert	50 min
Jul 14, 4:35 PM MDT	Severe Thunderstorm Warning	BOU	Weld	40 min
Jul 14, 5:09 PM MDT	Severe Thunderstorm Warning	BOU	Weld	36 min
Jul 14, 5:33 PM MDT	Special Weather Statement	BOU	Denver	27 min
Jul 14, 5:46 PM MDT	Severe Thunderstorm Warning	BOU	Weld	44 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2025 Every 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.