Alert archive / Nebraska / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 171, NWS North Platte, NE

July 28, 2019Sheridan County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 28, 2019, 2:31 PM MDT for Sheridan County, Nebraska. It was in force for 44 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 28, 2019, 2:31 PM MDT (20:31 UTC)
Expired: Jul 28, 2019, 3:15 PM MDT
In force: 44 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

County Sheridan County, NE

The radar

The North Platte radar (KLNX), 163 km from the middle of the area, began a volume at 20:30 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

Rapid City, SD (KUNR), launched 12:00Z, 8.5 hours before the alert went out and 178 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: 144 J/kg
Mixed-layer CIN: -175 J/kg
Mixed-layer LCL: 1720 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -34 m²/s²
0-3 km storm-relative helicity: -29 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 North Platte, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 28, 1:58 PM MDT, 33 minutes earlier.

Area forecast discussion, Jul 28, 1:58 PM MDT, 33 minutes before

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Hazardous weather outlook, Jul 28, 2:18 PM MDT, 13 minutes before

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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
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        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 North Platte, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 27, 7:02 PM MDT	Special Weather Statement	LBF	Sheridan	28 min
Jul 27, 7:27 PM MDT	Special Weather Statement	LBF	Sheridan	18 min
Jul 27, 7:29 PM MDT	Special Weather Statement	LBF	Sheridan	46 min
Jul 27, 7:37 PM MDT	Special Weather Statement	LBF	Garden	38 min
Jul 27, 7:54 PM MDT	Special Weather Statement	LBF	Deuel	36 min
Jul 27, 8:20 PM MDT	Special Weather Statement	LBF	Deuel, Garden	40 min
Jul 27, 8:55 PM MDT	Special Weather Statement	LBF	Sheridan	35 min
Jul 27, 9:25 PM MDT	Special Weather Statement	LBF	Sheridan	35 min
Jul 27, 9:34 PM MDT	Special Weather Statement	LBF	Arthur, Chase, Keith, McPherson, Perkins	41 min
Jul 27, 10:12 PM MDT	Special Weather Statement	LBF	Hooker, McPherson	48 min
Jul 27, 10:15 PM MDT	Special Weather Statement	LBF	Hayes, Lincoln	45 min
Jul 27, 10:34 PM MDT	Special Weather Statement	LBF	Cherry	41 min
Jul 27, 10:50 PM MDT	Special Weather Statement	LBF	Logan, Thomas	40 min
Jul 28, 3:13 PM MDT	Special Weather Statement	LBF	Sheridan	47 min
Jul 28, 3:57 PM MDT	Special Weather Statement	LBF	Sheridan	48 min
Jul 28, 4:28 PM MDT	Special Weather Statement	LBF	Grant	47 min

Nearby

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.