Alert archive / Nebraska / Freeze Warnings in 2008

Freeze Warning 1, NWS North Platte, NE

May 10, 200816 counties in Nebraska

NWS North Platte, NE issued this freeze warning at May 10, 2008, 3:03 PM MDT for 16 counties in Nebraska. It took effect at May 10, 2008, 9:00 PM MDT. It was in force for 11 hr. 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, 2008, 3:03 PM MDT (21:03 UTC)
In effect from: May 10, 2008, 9:00 PM MDT
Expired: May 11, 2008, 8:00 AM MDT
In force: 11 hr
Issued by: NWS North Platte, NE

Counties Arthur County, NE, Chase County, NE, Cherry County, NE, Deuel County, NE, Frontier County, NE, Garden County, NE, Grant County, NE, Hayes County, NE, Hooker County, NE, Keith County, NE, Lincoln County, NE, Logan County, NE, McPherson County, NE, Perkins County, NE, Sheridan County, NE, Thomas County, NE

The radar

The North Platte radar (KLNX), 89 km from the middle of the area, began a volume at 21:05 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

Denver, CO (KDNR), launched 12:00Z, 9.1 hours before the alert went out and 233 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: 2 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 894 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: -163 m²/s²
0-3 km storm-relative helicity: -81 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 freeze 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 freeze warning went out at May 10, 2:47 PM MDT, 16 minutes earlier.

Area forecast discussion, May 10, 2:47 PM MDT, 16 minutes before

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Hazardous weather outlook, May 10, 2:56 PM MDT, 7 minutes before

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In the hours before

Local storm report, May 10, 9:15 AM MDT, 5 hours 48 minutes before

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Local storm report, May 10, 10:21 AM MDT, 4 hours 42 minutes before

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Local storm report, May 10, 10:43 AM MDT, 4 hours 20 minutes before

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Local storm report, May 10, 11:02 AM MDT, 4 hours 1 minute before

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Local storm report, May 10, 11:51 AM MDT, 3 hours 12 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 9, 6:13 PM MDT	Severe Thunderstorm Warning	LBF	Chase, Hayes	32 min
May 9, 6:25 PM MDT	Severe Thunderstorm Warning	LBF	Hayes, Lincoln	50 min
May 9, 10:03 PM MDT	Severe Thunderstorm Warning	LBF	Chase, Perkins	42 min
May 10, 2:52 AM MDT	Freeze Watch	LBF	Arthur, Chase, Cherry, Deuel, Frontier, Garden and 10 more	12 hr

Nearby

Freeze Warnings in Nebraska, 2008 Every freeze warning in 2008

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.