Alert archive / Nebraska / Frost Advisories in 2026

Frost Advisory 1, NWS North Platte, NE

May 18, 202610 counties in Nebraska

NWS North Platte, NE issued this frost advisory at May 18, 2026, 1:07 PM CDT for 10 counties in Nebraska. It took effect at May 19, 2026, 1:00 AM CDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: May 18, 2026, 1:07 PM CDT (18:07 UTC)
In effect from: May 19, 2026, 1:00 AM CDT
Expired: May 19, 2026, 8:15 AM CDT
In force: 7 hr
Issued by: NWS North Platte, NE

Counties Blaine County, NE, Brown County, NE, Chase County, NE, Cherry County, NE, Hayes County, NE, Keya Paha County, NE, Lincoln County, NE, Logan County, NE, Perkins County, NE, Thomas County, NE

The radar

The North Platte radar (KLNX), 39 km from the middle of the area, began a volume at 18:11 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

Omaha, NE (KOAX), launched 12:00Z, 6.1 hours before the alert went out and 362 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: 871 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 271 m²/s²
0-3 km storm-relative helicity: 220 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 frost advisory 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 frost advisory went out at May 18, 12:42 PM CDT, 25 minutes earlier.

Area forecast discussion, May 18, 12:42 PM CDT, 25 minutes before

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Hazardous weather outlook, May 18, 3:38 AM CDT, 9 hours 29 minutes before

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In the hours before

Local storm report, May 18, 9:06 AM CDT, 4 hours 1 minute before

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Local storm report, May 18, 9:17 AM CDT, 3 hours 50 minutes before

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Local storm report, May 18, 9:24 AM CDT, 3 hours 43 minutes before

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Local storm report, May 18, 9:39 AM CDT, 3 hours 28 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 18, 1:07 PM CDT	Freeze Warning	LBF	Arthur, Cherry, Deuel, Garden, Grant, Hooker and 3 more	19 hr

Nearby

Frost Advisories in Nebraska, 2026 Every frost advisory in 2026

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.