Alert archive / Nebraska / Winter Storm Warnings in 2018

Winter Storm Warning 1, NWS Hastings, NE

January 20, 201814 counties in Nebraska

NWS Hastings, NE issued this winter storm warning at Jan 20, 2018, 4:02 AM CST for 14 counties in Nebraska. It took effect at Jan 21, 2018, 12:00 PM CST. It was in force for . No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jan 20, 2018, 4:02 AM CST (10:02 UTC)
In effect from: Jan 21, 2018, 12:00 PM CST
Expired: Jan 21, 2018, 3:52 AM CST
In force
Issued by: NWS Hastings, NE

Counties Buffalo County, NE, Dawson County, NE, Furnas County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Harlan County, NE, Howard County, NE, Kearney County, NE, Merrick County, NE, Nance County, NE, Phelps County, NE, Sherman County, NE, Valley County, NE

The radar

The Grand Island radar (KUEX), 80 km from the middle of the area, began a volume at 10:01 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, 10.0 hours before the alert went out and 137 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: 2677 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: -180 m²/s²
0-3 km storm-relative helicity: -39 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 storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Hastings, NE wrote its last area forecast discussion before this winter storm warning went out at Jan 20, 12:15 AM CST, 3 hours 47 minutes earlier.

Area forecast discussion, Jan 20, 12:15 AM CST, 3 hours 47 minutes before

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The office that day

Everything else NWS Hastings, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 20, 2:52 PM CST	Winter Weather Advisory	GID	Adams, Buffalo, Clay, Dawson, Fillmore, Franklin and 18 more	51 hr

Nearby

Winter Storm Warnings in Nebraska, 2018 Every winter storm warning in 2018

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.