Alert archive / Nebraska / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 50, NWS North Platte, NE

May 10, 2023Custer County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 10, 2023, 6:43 AM CDT for Custer County, Nebraska. It was in force for 34 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: May 10, 2023, 6:43 AM CDT (11:43 UTC)
Expired: May 10, 2023, 7:17 AM CDT
In force: 34 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Custer County, NE

The radar

The North Platte radar (KLNX), 94 km from the middle of the area, began a volume at 11:46 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 11.7 hours before the alert went out and 79 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: 1613 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: -55 m²/s²
0-3 km storm-relative helicity: -78 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

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 May 10, 6:16 AM CDT, 27 minutes earlier.

Area forecast discussion, May 10, 6:16 AM CDT, 27 minutes before

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Hazardous weather outlook, May 10, 3:27 AM CDT, 3 hours 16 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
May 10, 5:10 AM CDT	Areal Flood Warning	LBF	Custer	7 hr
May 10, 5:18 AM CDT	Areal Flood Warning	LBF	Lincoln	5 hr
May 10, 7:24 AM CDT	Areal Flood Warning	LBF	Custer	5 hr
May 10, 8:04 AM CDT	Areal Flood Advisory	LBF	Lincoln	3 hr
May 10, 12:07 PM CDT	Areal Flood Advisory	LBF	Custer	5 hr
May 10, 1:55 PM CDT	Flood Watch	LBF	Chase, Custer, Deuel, Frontier, Garden, Hayes and 4 more	47 hr
May 10, 5:26 PM CDT	Special Weather Statement	LBF	Frontier	34 min
May 10, 5:34 PM CDT	Severe Thunderstorm Warning	LBF	Chase	41 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2023 Every severe thunderstorm warning in 2023

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.