Alert archive / Nebraska / Frost Advisories in 2009

Frost Advisory 2, NWS Hastings, NE

October 2, 200917 counties in Nebraska; 6 counties in Kansas

NWS Hastings, NE issued this frost advisory at Oct 2, 2009, 3:00 AM CDT for 17 counties in Nebraska; 6 counties in Kansas. It took effect at Oct 3, 2009, 1:00 AM CDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Oct 2, 2009, 3:00 AM CDT (08:00 UTC)
In effect from: Oct 3, 2009, 1:00 AM CDT
Expired: Oct 3, 2009, 8:00 AM CDT
In force: 7 hr
Issued by: NWS Hastings, NE

All 23 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, Franklin County, NE, Furnas County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Harlan County, NE, Howard County, NE, Kearney County, NE, Nuckolls County, NE, Phelps County, NE, Sherman County, NE, Thayer County, NE, Valley County, NE, Webster County, NE

The radar

The Grand Island radar (KUEX), 31 km from the middle of the area, began a volume at 08:00 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, 8.0 hours before the alert went out and 174 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: 4 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 2122 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: -15 m²/s²
0-3 km storm-relative helicity: 11 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 1, 6:27 PM CDT, 8 hours 33 minutes earlier.

Area forecast discussion, Oct 1, 6:27 PM CDT, 8 hours 33 minutes before

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Hazardous weather outlook, Oct 1, 6:59 PM CDT, 8 hours 1 minute 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 2, 3:00 AM CDT	Freeze Warning	GID	Dawson, Gosper	29 hr

Nearby

Frost Advisories in Nebraska, 2009 Frost Advisories in Kansas, 2009 Every frost advisory in 2009

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.