Alert archive / Colorado / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 126, NWS Denver/Boulder, CO

June 29, 2013Elbert County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 29, 2013, 3:38 PM MDT for Elbert County, Colorado. It was in force for 52 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 29, 2013, 3:38 PM MDT (21:38 UTC)
Expired
Jun 29, 2013, 4:30 PM MDT
In force
52 min
Issued by
NWS Denver/Boulder, CO
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

County Elbert County, CO

The radar

The Denver radar (KFTG), 66 km from the middle of the area, began a volume at 21:38 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

Denver, CO (KDNR), launched 12:00Z, 9.6 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-pSkew-T log-p diagram, Denver, CO at 12:00Z on 2013-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 160 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, Denver, CO at 12:00Z on 2013-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 square meters per square second.193958Sfc1 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
160 J/kg
Mixed-layer CIN
-400 J/kg
Mixed-layer LCL
1719 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
34 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 29, 3:24 PM MDT, 14 minutes earlier.

Area forecast discussion, Jun 29, 3:24 PM MDT, 14 minutes before
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Hazardous weather outlook, Jun 29, 10:56 AM MDT, 4 hours 42 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.
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        Please try again in a few minutes.
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 28, 6:14 PM MDTSevere Thunderstorm WarningBOUBoulder, Gilpin46 min
Jun 28, 6:58 PM MDTSevere Thunderstorm WarningBOUClear Creek, Gilpin47 min
Jun 28, 7:26 PM MDTSevere Thunderstorm WarningBOUBoulder, Larimer, Weld49 min
Jun 28, 7:30 PM MDTSevere Thunderstorm WarningBOUArapahoe, Douglas, Elbert45 min
Jun 28, 7:31 PM MDTSevere Thunderstorm WarningBOULarimer, Weld44 min
Jun 28, 7:49 PM MDTSevere Thunderstorm WarningBOULarimer41 min
Jun 28, 8:07 PM MDTSevere Thunderstorm WarningBOUDouglas23 min
Jun 28, 8:12 PM MDTSevere Thunderstorm WarningBOUBoulder, Broomfield33 min
Jun 28, 8:23 PM MDTSevere Thunderstorm WarningBOULarimer, Weld37 min
Jun 28, 8:27 PM MDTAreal Flood AdvisoryBOULarimer, Weld2 hr
Jun 28, 8:47 PM MDTSevere Thunderstorm WarningBOUWeld43 min
Jun 28, 8:56 PM MDTSevere Thunderstorm WarningBOUWeld49 min
Jun 28, 8:57 PM MDTSevere Thunderstorm WarningBOUElbert48 min
Jun 28, 9:00 PM MDTSevere Thunderstorm WarningBOUBoulder, Larimer45 min
Jun 28, 9:07 PM MDTSevere Thunderstorm WarningBOUWeld23 min
Jun 28, 9:22 PM MDTSevere Thunderstorm WarningBOUMorgan38 min
Jun 28, 9:26 PM MDTSevere Thunderstorm WarningBOUMorgan, Weld49 min
Jun 28, 9:32 PM MDTSevere Thunderstorm WarningBOUAdams, Boulder, Broomfield, Jefferson28 min
Jun 28, 9:52 PM MDTSevere Thunderstorm WarningBOUBoulder, Jefferson23 min
Jun 28, 10:03 PM MDTSevere Thunderstorm WarningBOUMorgan42 min
Jun 28, 10:12 PM MDTSevere Thunderstorm WarningBOUMorgan48 min
Jun 28, 10:15 PM MDTAreal Flood AdvisoryBOUBoulder90 min
Jun 29, 12:11 AM MDTSpecial Weather StatementBOUDouglas34 min
Jun 29, 12:14 AM MDTSevere Thunderstorm WarningBOUDouglas, Elbert31 min
Jun 29, 4:07 AM MDTSpecial Weather StatementBOUPhillips23 min
Jun 29, 4:49 PM MDTSevere Thunderstorm WarningBOULincoln26 min
Jun 29, 5:12 PM MDTSevere Thunderstorm WarningBOULincoln33 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2013Every severe thunderstorm warning in 2013

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.