Alert archive / Nebraska / Snow Advisories in 2007

Snow Advisory 2, NWS Hastings, NE

January 20, 200724 counties in Nebraska; 6 counties in Kansas

NWS Hastings, NE issued this snow advisory at Jan 20, 2007, 3:45 AM CST for 24 counties in Nebraska; 6 counties in Kansas. It took effect at Jan 20, 2007, 12:00 PM CST. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued: Jan 20, 2007, 3:45 AM CST (09:45 UTC)
In effect from: Jan 20, 2007, 12:00 PM CST
Expired: Jan 20, 2007, 9:44 PM CST
In force: 10 hr
Issued by: NWS Hastings, NE

All 30 counties

Jewell County, KS, Mitchell County, KS, Osborne County, KS, Phillips County, KS, Rooks County, KS, Smith County, KS, Adams County, NE, Buffalo County, NE, Clay County, NE, Dawson County, NE, Fillmore County, NE, Franklin County, NE, Furnas County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Howard County, NE, Kearney County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Phelps County, NE, Polk County, NE, Sherman County, NE, Thayer County, NE, Valley County, NE, Webster County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 27 km from the middle of the area, began a volume at 09:47 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, 9.8 hours before the alert went out and 179 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: 1890 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 8 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 snow advisory 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 snow advisory went out at Jan 19, 2:17 PM CST, 13 hours 28 minutes earlier.

Area forecast discussion, Jan 19, 2:17 PM CST, 13 hours 28 minutes before

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Hazardous weather outlook, Jan 19, 4:10 AM CST, 23 hours 35 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, 2:34 PM CST	Heavy Snow Warning	GID	Adams, Buffalo, Clay, Dawson, Fillmore, Franklin and 18 more	17 hr

Nearby

Snow Advisories in Nebraska, 2007 Snow Advisories in Kansas, 2007 Every snow advisory in 2007

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.