Alert archive / Nebraska / Dense Fog Advisories in 2021

Dense Fog Advisory 8, NWS North Platte, NE

May 31, 20214 counties in Nebraska

NWS North Platte, NE issued this dense fog advisory at May 31, 2021, 3:32 AM MDT for 4 counties in Nebraska. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: May 31, 2021, 3:32 AM MDT (09:32 UTC)
Expired: May 31, 2021, 8:00 AM MDT
In force: 4 hr
Issued by: NWS North Platte, NE

Counties Deuel County, NE, Keith County, NE, Lincoln County, NE, Perkins County, NE

The radar

The North Platte radar (KLNX), 132 km from the middle of the area, began a volume at 09:33 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, 9.5 hours before the alert went out and 191 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: 8 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 558 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 70 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 North Platte, NE wrote its last area forecast discussion before this dense fog advisory went out at May 31, 2:55 AM MDT, 37 minutes earlier.

Area forecast discussion, May 31, 2:55 AM MDT, 37 minutes before

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Hazardous weather outlook, May 31, 2:14 AM MDT, 1 hour 18 minutes before

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In the hours before

Special weather statement, May 31, 12:57 AM MDT, 2 hours 35 minutes before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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Nearby

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; radar from the NEXRAD Level II archive.