Alert archive / Colorado / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 184, NWS Goodland, KS

July 4, 2019Yuma County, Colorado; Dundy County, Nebraska

NWS Goodland, KS issued this severe thunderstorm warning at Jul 4, 2019, 9:57 PM MDT for Yuma County, Colorado; Dundy County, Nebraska. It was in force for 63 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 4, 2019, 9:57 PM MDT (03:57 UTC)
Expired: Jul 4, 2019, 11:00 PM MDT
In force: 63 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Hail: 1.75 in
Wind: 60.0 mph

Counties Yuma County, CO, Dundy County, NE

The radar

The Goodland radar (KGLD), 86 km from the middle of the area, began a volume at 03:59 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.

Issued	Product	Office	Lasted
Jul 4, 3:01 PM MDT	Tornado Watch	SPC	7 hr
Jul 4, 9:08 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 4.0 hours before the alert went out and 103 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: 1008 J/kg
Mixed-layer CIN: -120 J/kg
Mixed-layer LCL: 2132 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 3 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

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.

Hazardous weather outlook, Jul 4, 9:29 PM MDT, 28 minutes before

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In the hours before

Special weather statement, Jul 4, 7:05 PM MDT, 2 hours 52 minutes before

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Special weather statement, Jul 4, 7:32 PM MDT, 2 hours 25 minutes before

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Special weather statement, Jul 4, 7:33 PM MDT, 2 hours 24 minutes before

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Special weather statement, Jul 4, 8:28 PM MDT, 1 hour 29 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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Special weather statement, Jul 4, 8:40 PM MDT, 1 hour 17 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.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
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The office that day

Everything else NWS Goodland, KS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 5, 5:35 PM MDT	Severe Thunderstorm Warning	GLD	Graham, Sheridan	40 min
Jul 5, 5:48 PM MDT	Severe Thunderstorm Warning	GLD	Graham	42 min
Jul 4, 7:05 PM MDT	Special Weather Statement	GLD	Kit Carson	25 min
Jul 4, 7:32 PM MDT	Special Weather Statement	GLD	Lincoln	28 min
Jul 4, 7:33 PM MDT	Special Weather Statement	GLD	Washington	27 min
Jul 4, 7:49 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	41 min
Jul 4, 8:28 PM MDT	Special Weather Statement	GLD	Yuma	32 min
Jul 4, 8:40 PM MDT	Special Weather Statement	GLD	Kit Carson	20 min
Jul 4, 9:24 PM MDT	Severe Thunderstorm Warning	GLD	Yuma	36 min
Jul 4, 10:08 PM MDT	Special Weather Statement	GLD	Yuma	37 min
Jul 4, 10:55 PM MDT	Severe Thunderstorm Warning	GLD	Dundy	35 min
Jul 5, 6:38 AM MDT	Special Weather Statement	GLD	Red Willow	37 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2019 Severe Thunderstorm Warnings in Nebraska, 2019 Every severe thunderstorm warning in 2019

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.