Alert archive / Colorado / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 337, NWS Denver/Boulder, CO

August 19, 2026Lincoln County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Aug 19, 2026, 12:57 AM MDT for Lincoln County, Colorado. It was in force for 48 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
Aug 19, 2026, 12:57 AM MDT (06:57 UTC)
Expired
Aug 19, 2026, 1:45 AM MDT
In force
48 min
Issued by
NWS Denver/Boulder, CO
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Lincoln County, CO

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 7.0 hours before the alert went out and 343 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, Dodge City, at 00:00Z on 2026-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 939 joules per kilogram.LCLLFCEL10008507005003002001001 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, Dodge City, at 00:00Z on 2026-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 square meters per square second.1939Sfc1 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
939 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
3354 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
114 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.6

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 Aug 19, 12:13 AM MDT, 44 minutes earlier.

Area forecast discussion, Aug 19, 12:13 AM MDT, 44 minutes before
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In the hours before

Special weather statement, Aug 18, 10:01 PM MDT, 2 hours 56 minutes before
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Special weather statement, Aug 18, 10:33 PM MDT, 2 hours 24 minutes before
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Special weather statement, Aug 18, 10:45 PM MDT, 2 hours 12 minutes before
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</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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      <p id="message2">
        Please try again in a few minutes.
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Local storm report, Aug 18, 11:18 PM MDT, 1 hour 39 minutes before
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<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 10:01 PM MDTSpecial Weather StatementBOUWeld29 min
Aug 18, 10:33 PM MDTSpecial Weather StatementBOUMorgan42 min
Aug 18, 10:45 PM MDTSpecial Weather StatementBOUMorgan30 min
Aug 18, 10:51 PM MDTSevere Thunderstorm WarningBOUWashington39 min
Aug 18, 11:41 PM MDTSevere Thunderstorm WarningBOUElbert35 min
Aug 19, 12:14 AM MDTSevere Thunderstorm Warning Considerable damage threatBOUElbert, Lincoln46 min
Aug 19, 12:42 AM MDTSevere Thunderstorm WarningBOUElbert, Lincoln23 min
Aug 19, 3:02 AM MDTSpecial Weather StatementBOULincoln28 min
Aug 19, 6:13 AM MDTSpecial Weather StatementBOUElbert32 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2026Every 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.