Alert archive / Kansas / Dense Fog Advisories in 2021

Dense Fog Advisory 8, NWS Goodland, KS

May 12, 2021Decatur County, Rawlins County, Kansas; Hitchcock County, Red Willow County, Nebraska

NWS Goodland, KS issued this dense fog advisory at May 12, 2021, 7:27 AM CDT for Decatur County, Rawlins County, Kansas; Hitchcock County, Red Willow County, Nebraska. It was in force for 86 min.

The area

The counties it named.

The facts

Issued: May 12, 2021, 7:27 AM CDT (12:27 UTC)
Expired: May 12, 2021, 8:53 AM CDT
In force: 86 min
Issued by: NWS Goodland, KS

Counties Decatur County, KS, Rawlins County, KS, Hitchcock County, NE, Red Willow County, NE

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 0.5 hours before the alert went out and 129 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: 1040 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: 0 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 dense fog advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Goodland, KS wrote its last area forecast discussion before this dense fog advisory went out at May 12, 6:30 AM CDT, 57 minutes earlier.

Area forecast discussion, May 12, 6:30 AM CDT, 57 minutes before

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Hazardous weather outlook, May 12, 5:41 AM CDT, 1 hour 46 minutes before

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In the hours before

Local storm report, May 12, 4:26 AM CDT, 3 hours 1 minute before

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Local storm report, May 12, 4:42 AM CDT, 2 hours 45 minutes before

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Local storm report, May 12, 6:13 AM CDT, 1 hour 14 minutes before

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Local storm report, May 12, 7:08 AM CDT, 19 minutes before

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Local storm report, May 12, 7:10 AM CDT, 17 minutes before

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The office that day

Everything else NWS Goodland, KS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 12, 5:31 PM CDT	Special Weather Statement	GLD	Yuma	59 min

Nearby

Dense Fog Advisories in Kansas, 2021 Dense Fog Advisories in Nebraska, 2021 Every dense fog advisory in 2021

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.