Alert archive / Kansas / Dense Fog Advisories in 2021

Dense Fog Advisory 13, NWS Goodland, KS

July 15, 202111 counties in Kansas; Kit Carson County, Yuma County, Colorado; Dundy County, Hitchcock County, Red Willow County, Nebraska

NWS Goodland, KS issued this dense fog advisory at Jul 15, 2021, 11:20 PM CDT for 11 counties in Kansas; Kit Carson County, Yuma County, Colorado; Dundy County, Hitchcock County, Red Willow County, Nebraska. It took effect at Jul 16, 2021, 2:37 AM CDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Jul 15, 2021, 11:20 PM CDT (04:20 UTC)
In effect from: Jul 16, 2021, 2:37 AM CDT
Expired: Jul 16, 2021, 10:00 AM CDT
In force: 7 hr
Issued by: NWS Goodland, KS

Counties Kit Carson County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Gove County, KS, Graham County, KS, Logan County, KS, Norton County, KS, Rawlins County, KS, Sheridan County, KS, Sherman County, KS, Thomas County, KS, Wallace County, KS, Dundy County, NE, Hitchcock County, NE, Red Willow County, NE

The radar

The Goodland radar (KGLD), 55 km from the middle of the area, began a volume at 04:18 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

Denver, CO (KDNR), launched 00:00Z, 4.3 hours before the alert went out and 184 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: 97 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 2986 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: -29 m²/s²
0-3 km storm-relative helicity: 83 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

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 Jul 15, 11:10 PM CDT, 10 minutes earlier.

Area forecast discussion, Jul 15, 11:10 PM CDT, 10 minutes before

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Hazardous weather outlook, Jul 15, 9:35 PM CDT, 1 hour 45 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
Jul 16, 6:25 PM CDT	Special Weather Statement	GLD	Cheyenne	50 min
Jul 16, 5:15 PM CDT	Special Weather Statement	GLD	Kit Carson	30 min
Jul 16, 5:44 PM CDT	Special Weather Statement	GLD	Yuma	46 min
Jul 16, 6:02 PM CDT	Special Weather Statement	GLD	Cheyenne	28 min
Jul 16, 6:29 PM CDT	Flash Flood Warning	GLD	Kit Carson	87 min
Jul 16, 6:34 PM CDT	Severe Thunderstorm Warning	GLD	Kit Carson	56 min
Jul 16, 6:37 PM CDT	Special Weather Statement	GLD	Cheyenne	23 min
Jul 16, 6:39 PM CDT	Flash Flood Warning	GLD	Cheyenne	58 min
Jul 16, 6:42 PM CDT	Severe Thunderstorm Warning	GLD	Cheyenne	14 min

Nearby

Dense Fog Advisories in Kansas, 2021 Dense Fog Advisories in Nebraska, 2021 Dense Fog Advisories in Colorado, 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; radar from the NEXRAD Level II archive.