Alert archive / Wyoming / Freeze Watches in 2012

Freeze Watch 1, NWS Cheyenne, WY

October 3, 20127 counties in Wyoming; 5 counties in Nebraska

NWS Cheyenne, WY issued this freeze watch at Oct 3, 2012, 2:49 AM MDT for 7 counties in Wyoming; 5 counties in Nebraska. It took effect at Oct 3, 2012, 9:00 PM MDT. It was in force for .

The area

The counties it named.

The facts

Issued: Oct 3, 2012, 2:49 AM MDT (08:49 UTC)
In effect from: Oct 3, 2012, 9:00 PM MDT
Expired: Oct 3, 2012, 2:20 PM MDT
In force
Issued by: NWS Cheyenne, WY

Counties Banner County, NE, Cheyenne County, NE, Kimball County, NE, Morrill County, NE, Scotts Bluff County, NE, Albany County, WY, Carbon County, WY, Converse County, WY, Goshen County, WY, Laramie County, WY, Niobrara County, WY, Platte County, WY

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 8.8 hours before the alert went out and 334 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: 3853 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 150 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 freeze watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Cheyenne, WY wrote its last area forecast discussion before this freeze watch went out at Oct 2, 11:23 PM MDT, 3 hours 26 minutes earlier.

Area forecast discussion, Oct 2, 11:23 PM MDT, 3 hours 26 minutes before

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Hazardous weather outlook, Oct 2, 7:38 PM MDT, 7 hours 11 minutes before

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The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 3, 2:20 PM MDT	Freeze Warning	CYS	Albany, Carbon, Converse, Goshen, Laramie, Niobrara and 1 more	19 hr
Oct 3, 2:49 AM MDT	Wind Advisory	CYS	Banner, Box Butte, Cheyenne, Dawes, Kimball, Morrill and 2 more	18 hr
Oct 3, 10:45 AM MDT	Red Flag Warning	CYS		5 hr

Nearby

Freeze Watches in Wyoming, 2012 Freeze Watches in Nebraska, 2012 Every freeze watch in 2012

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.