Alert archive / Colorado / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 137, NWS Denver/Boulder, CO

July 29, 1998Lincoln County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 29, 1998, 7:13 PM MDT for Lincoln County, Colorado. It was in force for 32 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 29, 1998, 7:13 PM MDT (01:13 UTC)
Expired: Jul 29, 1998, 7:45 PM MDT
In force: 32 min
Issued by: NWS Denver/Boulder, CO
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Lincoln County, CO

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 1.2 hours before the alert went out and 101 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: 147 J/kg
Mixed-layer CIN: -67 J/kg
Mixed-layer LCL: 1563 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: 115 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.4

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Special weather statement, Jul 29, 2:55 PM MDT, 4 hours 18 minutes before

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Special weather statement, Jul 29, 5:00 PM MDT, 2 hours 13 minutes before

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Special weather statement, Jul 29, 5:00 PM MDT, 2 hours 13 minutes before

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Special weather statement, Jul 29, 5:20 PM MDT, 1 hour 53 minutes before

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Special weather statement, Jul 29, 5:20 PM MDT, 1 hour 53 minutes before

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<head>
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<body>
  <main class="wrap">
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      <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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Special weather statement, Jul 29, 5:46 PM MDT, 1 hour 27 minutes before

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      <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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        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.

Issued	Product	Office	Counties	Lasted
Jul 29, 6:01 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe, Elbert	29 min
Jul 29, 6:32 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	43 min
Jul 29, 7:39 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	36 min
Jul 30, 1:41 PM MDT	Severe Thunderstorm Warning	BOU	Douglas, Jefferson, Park	34 min
Jul 30, 3:00 PM MDT	Flash Flood Warning	BOU	Arapahoe, Douglas	3 hr
Jul 30, 4:22 PM MDT	Flash Flood Warning	BOU	Elbert, Lincoln	2 hr
Jul 30, 4:24 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	51 min
Jul 30, 5:00 PM MDT	Flash Flood Warning	BOU	Park	2 hr
Jul 30, 5:14 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	46 min
Jul 30, 5:25 PM MDT	Flash Flood Warning	BOU	Elbert, Lincoln	2 hr

Nearby

Severe Thunderstorm Warnings in Colorado, 1998 Every severe thunderstorm warning in 1998

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.