Alert archive / Nebraska / Winter Weather Advisories in 2016

Winter Weather Advisory 2, NWS North Platte, NE

January 31, 201616 counties in Nebraska

NWS North Platte, NE issued this winter weather advisory at Jan 31, 2016, 1:50 PM MST for 16 counties in Nebraska. It took effect at Feb 1, 2016, 11:00 AM MST. It was in force for 35 hr.

The area

The counties it named.

The facts

Issued: Jan 31, 2016, 1:50 PM MST (20:50 UTC)
In effect from: Feb 1, 2016, 11:00 AM MST
Expired: Feb 2, 2016, 9:59 PM MST
In force: 35 hr
Issued by: NWS North Platte, NE

Counties Arthur County, NE, Blaine County, NE, Boyd County, NE, Brown County, NE, Cherry County, NE, Garden County, NE, Grant County, NE, Holt County, NE, Hooker County, NE, Keya Paha County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Rock County, NE, Sheridan County, NE, Thomas County, NE

The radar

The North Platte radar (KLNX), 19 km from the middle of the area, began a volume at 20:54 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, 8.8 hours before the alert went out and 111 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: 1148 m above ground
0-6 km bulk shear: 72 kt
0-1 km storm-relative helicity: -172 m²/s²
0-3 km storm-relative helicity: -194 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 winter weather 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 winter weather advisory went out at Jan 31, 11:20 AM MST, 2 hours 30 minutes earlier.

Area forecast discussion, Jan 31, 11:20 AM MST, 2 hours 30 minutes before

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Hazardous weather outlook, Jan 31, 3:18 AM MST, 10 hours 32 minutes before

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In the hours before

Local storm report, Jan 31, 8:43 AM MST, 5 hours 7 minutes before

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Local storm report, Jan 31, 9:16 AM MST, 4 hours 34 minutes before

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Local storm report, Jan 31, 9:37 AM MST, 4 hours 13 minutes before

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Local storm report, Jan 31, 9:48 AM MST, 4 hours 2 minutes before

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Local storm report, Jan 31, 11:54 AM MST, 1 hour 56 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
Jan 31, 1:50 PM MST	Winter Storm Warning	LBF	Arthur, Blaine, Chase, Custer, Deuel, Frontier and 11 more	57 hr

Nearby

Winter Weather Advisories in Nebraska, 2016 Every winter weather advisory in 2016

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.