Alert archive / Colorado / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 177, NWS Denver/Boulder, CO

June 24, 2025Morgan County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 24, 2025, 3:25 PM MDT for Morgan County, Colorado. It was in force for 50 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
Jun 24, 2025, 3:25 PM MDT (21:25 UTC)
Expired
Jun 24, 2025, 4:15 PM MDT
In force
50 min
Issued by
NWS Denver/Boulder, CO
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Morgan County, CO

The radar

The Denver radar (KFTG), 82 km from the middle of the area, began a volume at 21:26 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 24, 1:09 PM MDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Grand Junction, CO (KGJT), launched 12:00Z, 9.4 hours before the alert went out and 421 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-pSkew-T log-p diagram, Grand Junction, CO at 12:00Z on 2025-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Grand Junction, CO at 12:00Z on 2025-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 263 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3379 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
263 m²/s²
0-3 km storm-relative helicity
261 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jun 24, 2:46 PM MDT, 39 minutes earlier.

Area forecast discussion, Jun 24, 2:46 PM MDT, 39 minutes before
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Hazardous weather outlook, Jun 24, 5:41 AM MDT, 9 hours 44 minutes before
Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
541 AM MDT Tue Jun 24 2025

COZ030>051-251145-
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-
541 AM MDT Tue Jun 24 2025

...SEVERE STORMS EXPECTED IN EASTERN COLORADO THIS AFTERNOON AND
EVENING...

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

.DAY ONE...Today and Tonight

Thunderstorms will develop over the Front Range mountains and in
the I-25 corridor this afternoon and move east across the plains
through this evening. Some of the storms are expected to be
severe. The main threat today will be large hail up to 2 inches in
diameter. There is also a threat of wind gusts up to 70 mph and
heavy rain producing localized flooding, especially over the
eastern portion of the plains. Isolated tornadoes are also
possible. Along the I-25 corridor, the threat is mainly between 2
PM and 5 PM, and between 4 PM and 8 PM over the eastern plains.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Another round of thunderstorms is expected Wednesday afternoon and
evening, with a lower threat of severe storms mainly in the
northeast corner of Colorado.

Warmer and drier conditions are expected to return Thursday and
into the weekend.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is likely after noon.

Gimmestad

In the hours before

Local storm report, Jun 24, 2:22 PM MDT, 1 hour 3 minutes before
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Local storm report, Jun 24, 2:35 PM MDT, 50 minutes before
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Local storm report, Jun 24, 2:36 PM MDT, 49 minutes before
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Local storm report, Jun 24, 2:46 PM MDT, 39 minutes before
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Local storm report, Jun 24, 3:03 PM MDT, 22 minutes before
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Special weather statement, Jun 24, 3:07 PM MDT, 18 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 1:14 PM MDTSpecial Weather StatementBOUDouglas31 min
Jun 24, 1:34 PM MDTSevere Thunderstorm WarningBOUDouglas26 min
Jun 24, 1:45 PM MDTAreal Flood AdvisoryBOUDouglas97 min
Jun 24, 1:58 PM MDTTornado WarningBOUArapahoe, Elbert18 min
Jun 24, 2:07 PM MDTSevere Thunderstorm WarningBOUArapahoe30 min
Jun 24, 2:15 PM MDTTornado WarningBOUAdams, Arapahoe30 min
Jun 24, 2:34 PM MDTSevere Thunderstorm WarningBOUAdams, Arapahoe41 min
Jun 24, 3:07 PM MDTSpecial Weather StatementBOUMorgan38 min
Jun 24, 4:14 PM MDTSevere Thunderstorm WarningBOULogan, Morgan, Washington, Weld46 min
Jun 24, 5:04 PM MDTSpecial Weather StatementBOULogan41 min
Jun 24, 5:41 PM MDTSpecial Weather StatementBOUBroomfield49 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.