Alert archive / Colorado / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 147, NWS Denver/Boulder, CO

June 23, 2026Phillips County, Sedgwick County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 23, 2026, 10:05 PM MDT for Phillips County, Sedgwick County, Colorado. It was in force for 25 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 23, 2026, 10:05 PM MDT (04:05 UTC)
Expired: Jun 23, 2026, 10:30 PM MDT
In force: 25 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Phillips County, CO, Sedgwick County, CO

The radar

The Goodland radar (KGLD), 162 km from the middle of the area, began a volume at 04:07 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 4.1 hours before the alert went out and 154 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: 720 J/kg
Mixed-layer CIN: -84 J/kg
Mixed-layer LCL: 1189 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 27 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.3

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 23, 5:55 PM MDT, 4 hours 10 minutes earlier.

Area forecast discussion, Jun 23, 5:55 PM MDT, 4 hours 10 minutes before

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In the hours before

Local storm report, Jun 23, 8:52 PM MDT, 1 hour 13 minutes before

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Local storm report, Jun 23, 8:55 PM MDT, 1 hour 10 minutes before

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Local storm report, Jun 23, 9:09 PM MDT, 56 minutes before

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Local storm report, Jun 23, 9:14 PM MDT, 51 minutes before

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Local storm report, Jun 23, 9:17 PM MDT, 48 minutes before

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Local storm report, Jun 23, 9:41 PM MDT, 24 minutes before

Preliminary Local Storm Report
National Weather Service Denver CO
941 PM MDT Tue Jun 23 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0925 PM     Hail             1 SSW Wiggins           40.21N 104.08W
06/23/2026  E1.75 Inch       Morgan             CO   Law Enforcement

            Vehicle and camper destroyed by large hail
            in the Kiowa Park Subdivision.

&&

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 6:09 PM MDT	Severe Thunderstorm Warning	BOU	Washington	22 min
Jun 23, 6:19 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe, Elbert, Lincoln	41 min
Jun 23, 6:51 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOU	Arapahoe, Elbert, Lincoln, Washington	38 min
Jun 23, 7:12 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOU	Washington	18 min
Jun 23, 7:29 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOU	Washington	27 min
Jun 23, 8:31 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOU	Morgan, Weld	44 min
Jun 23, 8:34 PM MDT	Severe Thunderstorm Warning	BOU	Elbert	41 min
Jun 23, 8:45 PM MDT	Severe Thunderstorm Warning	BOU	Morgan, Washington	25 min
Jun 23, 8:52 PM MDT	Severe Thunderstorm Warning Destructive damage threat	BOU	Morgan	38 min
Jun 23, 8:58 PM MDT	Severe Thunderstorm Warning Destructive damage threat	BOU	Morgan, Weld	47 min
Jun 23, 9:02 PM MDT	Severe Thunderstorm Warning	BOU	Elbert	43 min
Jun 23, 9:16 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOU	Morgan	32 min
Jun 23, 9:37 PM MDT	Severe Thunderstorm Warning	BOU	Morgan, Weld	25 min
Jun 23, 9:38 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	9 min
Jun 23, 9:42 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	17 min
Jun 23, 9:46 PM MDT	Severe Thunderstorm Warning	BOU	Phillips	44 min
Jun 23, 10:27 PM MDT	Severe Thunderstorm Warning	BOU	Phillips	23 min
Jun 23, 10:39 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe, Elbert, Lincoln, Washington	42 min
Jun 23, 11:48 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	27 min
Jun 23, 11:59 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	46 min
Jun 24, 12:26 AM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	31 min
Jun 24, 12:40 AM MDT	Severe Thunderstorm Warning	BOU	Elbert	25 min
Jun 24, 12:42 AM MDT	Severe Thunderstorm Warning	BOU	Lincoln	48 min
Jun 24, 12:47 AM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	43 min
Jun 24, 1:02 AM MDT	Flash Flood Warning	BOU	Lincoln	3 hr
Jun 24, 1:21 AM MDT	Severe Thunderstorm Warning	BOU	Logan, Morgan, Weld	39 min
Jun 24, 1:22 AM MDT	Flash Flood Warning	BOU	Arapahoe, Elbert, Lincoln	3 hr
Jun 24, 3:21 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOU	Morgan, Weld	39 min
Jun 24, 3:38 PM MDT	Severe Thunderstorm Warning Destructive damage threat	BOU	Morgan, Weld	33 min
Jun 24, 3:46 PM MDT	Special Weather Statement	BOU	Adams	44 min
Jun 24, 3:59 PM MDT	Severe Thunderstorm Warning	BOU	Logan, Morgan, Washington	46 min
Jun 24, 4:06 PM MDT	Severe Thunderstorm Warning Destructive damage threat	BOU	Morgan	21 min
Jun 24, 4:21 PM MDT	Tornado Warning	BOU	Logan, Morgan, Washington	39 min
Jun 24, 4:26 PM MDT	Tornado Warning	BOU	Morgan	34 min
Jun 24, 4:52 PM MDT	Severe Thunderstorm Warning	BOU	Morgan, Washington	38 min
Jun 24, 4:55 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOU	Washington	35 min
Jun 24, 5:15 PM MDT	Severe Thunderstorm Warning	BOU	Washington	45 min
Jun 24, 5:38 PM MDT	Severe Thunderstorm Warning	BOU	Logan, Sedgwick	24 min
Jun 24, 5:42 PM MDT	Severe Thunderstorm Warning	BOU	Washington	33 min
Jun 24, 5:48 PM MDT	Tornado Warning	BOU	Logan	42 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2026 Every severe thunderstorm warning in 2026

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.