Alert archive / Nebraska / Dense Fog Advisories in 2021
Dense Fog Advisory 7, NWS North Platte, NE
NWS North Platte, NE issued this dense fog advisory at Mar 5, 2021, 3:54 AM CST for 4 counties in Nebraska. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Mar 5, 2021, 3:54 AM CST (09:54 UTC)
- Expired
- Mar 5, 2021, 11:00 AM CST
- In force
- 7 hr
- Issued by
- NWS North Platte, NE
Counties Boyd County, NE, Garfield County, NE, Holt County, NE, Wheeler County, NE
The radar
The North Platte radar (KLNX), 154 km from the middle of the area, began a volume at 09:58 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, 9.9 hours before the alert went out and 200 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2902 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- 16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Mar 5, 3:38 AM CST, 16 minutes earlier.
Area forecast discussion, Mar 5, 3:38 AM CST, 16 minutes before
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</html>Hazardous weather outlook, Mar 4, 3:17 PM CST, 12 hours 37 minutes before
Hazardous Weather Outlook National Weather Service North Platte NE 317 PM CST Thu Mar 4 2021 NEZ004>010-022>029-035>038-056>059-069>071-094-052130- Sheridan-Eastern Cherry-Keya Paha-Boyd-Brown-Rock-Holt-Garden- Grant-Hooker-Thomas-Blaine-Loup-Garfield-Wheeler-Arthur-McPherson- Logan-Custer-Deuel-Keith-Perkins-Lincoln-Chase-Hayes-Frontier- Western Cherry- 317 PM CST Thu Mar 4 2021 /217 PM MST Thu Mar 4 2021/ This Hazardous Weather Outlook is for portions of western and north central Nebraska. .DAY ONE...TONIGHT. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. Fire weather conditions will be elevated for Friday afternoon across the eastern Panhandle with minimum humidity around 20 percent. Saturday near critical fire weather conditions possible across all of western and north central Nebraska. Minimum RH values around 20 percent or below. Winds out of the southwest with gust up to 35 mph. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed through tonight. && Get your weather, hydrological, and climate information at http://www.weather.gov/northplatte
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 5, 3:28 AM CST | Fire Weather Watch | LBF | Arthur, Blaine, Boyd, Brown, Chase, Cherry and 20 more | 10 hr |
| Mar 5, 1:25 PM CST | Red Flag Warning | LBF | Arthur, Blaine, Boyd, Brown, Chase, Cherry and 20 more | 31 hr |
Nearby
Dense Fog Advisories in Nebraska, 2021Every 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.