Alert archive / Nebraska / Frost Advisories in 2011

Frost Advisory 6, NWS Hastings, NE

October 17, 201124 counties in Nebraska; Phillips County, Kansas

NWS Hastings, NE issued this frost advisory at Oct 17, 2011, 2:22 PM CDT for 24 counties in Nebraska; Phillips County, Kansas. It took effect at Oct 18, 2011, 1:00 AM CDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Oct 17, 2011, 2:22 PM CDT (19:22 UTC)
In effect from: Oct 18, 2011, 1:00 AM CDT
Expired: Oct 18, 2011, 9:00 AM CDT
In force: 8 hr
Issued by: NWS Hastings, NE

All 25 counties

Phillips 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), 46 km from the middle of the area, began a volume at 19:24 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, 7.4 hours before the alert went out and 172 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: 1070 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 179 m²/s²
0-3 km storm-relative helicity: 192 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 Hastings, NE wrote its last area forecast discussion before this frost advisory went out at Oct 17, 12:30 PM CDT, 1 hour 52 minutes earlier.

Area forecast discussion, Oct 17, 12:30 PM CDT, 1 hour 52 minutes before

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Hazardous weather outlook, Oct 17, 4:58 AM CDT, 9 hours 24 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
Oct 17, 2:22 PM CDT	Freeze Watch	GID	Adams, Buffalo, Clay, Dawson, Fillmore, Franklin and 18 more	24 hr

Nearby

Frost Advisories in Nebraska, 2011 Frost Advisories in Kansas, 2011 Every frost advisory in 2011

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.