Alert archive / Nebraska / Frost Advisories in 2024

Frost Advisory 3, NWS Cheyenne, WY

October 3, 2024Albany County, Wyoming; Cheyenne County, Morrill County, Nebraska

NWS Cheyenne, WY issued this frost advisory at Oct 3, 2024, 1:18 PM MDT for Albany County, Wyoming; Cheyenne County, Morrill County, Nebraska. It took effect at Oct 4, 2024, 12:00 AM MDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Oct 3, 2024, 1:18 PM MDT (19:18 UTC)
In effect from: Oct 4, 2024, 12:00 AM MDT
Expired: Oct 4, 2024, 7:32 AM MDT
In force: 8 hr
Issued by: NWS Cheyenne, WY

Counties Cheyenne County, NE, Morrill County, NE, Albany County, WY

The radar

The Cheyenne radar (KCYS), 86 km from the middle of the area, began a volume at 19:23 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 12:00Z, 7.3 hours before the alert went out and 280 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: 2642 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 142 m²/s²
0-3 km storm-relative helicity: 205 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 Cheyenne, WY wrote its last area forecast discussion before this frost advisory went out at Oct 3, 11:11 AM MDT, 2 hours 7 minutes earlier.

Area forecast discussion, Oct 3, 11:11 AM MDT, 2 hours 7 minutes before

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Hazardous weather outlook, Oct 3, 5:16 AM MDT, 8 hours 2 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 3, 1:22 AM MDT	Fire Weather Watch	CYS	Albany, Carbon, Converse, Goshen, Laramie, Niobrara and 1 more	24 hr
Oct 3, 1:35 PM MDT	Fire Weather Watch	CYS	Goshen, Laramie	23 hr
Oct 3, 1:35 PM MDT	Red Flag Warning	CYS	Albany, Carbon, Converse, Goshen, Laramie, Niobrara and 1 more	53 hr

Nearby

Frost Advisories in Nebraska, 2024 Frost Advisories in Wyoming, 2024 Every frost advisory in 2024

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.