Alert archive / Nebraska / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 125, NWS North Platte, NE

June 21, 2020Custer County, Lincoln County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 21, 2020, 9:11 PM CDT for Custer County, Lincoln County, Nebraska. It was in force for 49 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 21, 2020, 9:11 PM CDT (02:11 UTC)
Expired: Jun 21, 2020, 10:00 PM CDT
In force: 49 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Custer County, NE, Lincoln County, NE

The radar

The North Platte radar (KLNX), 87 km from the middle of the area, began a volume at 02:14 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
Jun 21, 3:19 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 2.2 hours before the alert went out and 294 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3130 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 87 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 Jun 21, 6:28 PM CDT, 2 hours 43 minutes earlier.

Area forecast discussion, Jun 21, 6:28 PM CDT, 2 hours 43 minutes before

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Hazardous weather outlook, Jun 21, 3:13 PM CDT, 5 hours 58 minutes before

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In the hours before

Special weather statement, Jun 21, 4:15 PM CDT, 4 hours 56 minutes before

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Special weather statement, Jun 21, 6:06 PM CDT, 3 hours 5 minutes before

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Special weather statement, Jun 21, 6:09 PM CDT, 3 hours 2 minutes before

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Special weather statement, Jun 21, 6:36 PM CDT, 2 hours 35 minutes before

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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
Jun 21, 7:08 PM CDT	Special Weather Statement	LBF	Arthur, Grant, Hooker, McPherson	52 min
Jun 21, 7:46 PM CDT	Special Weather Statement	LBF	Hooker, Logan, McPherson, Thomas	59 min
Jun 21, 8:28 PM CDT	Special Weather Statement	LBF	Lincoln	47 min
Jun 21, 9:57 PM CDT	Special Weather Statement	LBF	Frontier	48 min
Jun 21, 10:46 PM CDT	Special Weather Statement	LBF	Lincoln	44 min
Jun 22, 12:24 AM CDT	Special Weather Statement	LBF	Frontier	66 min
Jun 22, 1:22 PM CDT	Special Weather Statement	LBF	Holt	53 min
Jun 22, 2:32 PM CDT	Special Weather Statement	LBF	Wheeler	28 min
Jun 22, 6:57 PM CDT	Special Weather Statement	LBF	Sherman	48 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2020 Every severe thunderstorm warning in 2020

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.