Alert archive / Nebraska / Dense Fog Advisories in 2017
Dense Fog Advisory 13, NWS North Platte, NE
NWS North Platte, NE issued this dense fog advisory at Aug 13, 2017, 6:09 AM MDT for 7 counties in Nebraska. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Aug 13, 2017, 6:09 AM MDT (12:09 UTC)
- Expired
- Aug 13, 2017, 8:41 AM MDT
- In force
- 3 hr
- Issued by
- NWS North Platte, NE
Counties Chase County, NE, Deuel County, NE, Frontier County, NE, Hayes County, NE, Keith County, NE, Lincoln County, NE, Perkins County, NE
The radar
The North Platte radar (KLNX), 142 km from the middle of the area, began a volume at 12:07 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 12:00Z, 0.2 hours before the alert went out and 72 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
- 439 J/kg
- Mixed-layer CIN
- -191 J/kg
- Mixed-layer LCL
- 890 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 96 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
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 Aug 13, 5:23 AM MDT, 46 minutes earlier.
Area forecast discussion, Aug 13, 5:23 AM MDT, 46 minutes before
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</html>Hazardous weather outlook, Aug 13, 5:39 AM MDT, 30 minutes before
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</html>In the hours before
Local storm report, Aug 13, 12:20 AM MDT, 5 hours 49 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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The site you requested is temporarily down for maintenance or an unexpected outage.
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Please try again in a few minutes.
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</html>The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 6:00 PM MDT | Severe Thunderstorm Warning | LBF | Brown | 45 min |
| Aug 12, 6:05 PM MDT | Tornado Warning | LBF | Custer | 25 min |
| Aug 12, 6:14 PM MDT | Severe Thunderstorm Warning | LBF | Loup, Rock | 31 min |
| Aug 12, 6:23 PM MDT | Special Weather Statement | LBF | Keith, Lincoln | 52 min |
| Aug 12, 6:25 PM MDT | Severe Thunderstorm Warning | LBF | Custer | 50 min |
| Aug 12, 6:40 PM MDT | Severe Thunderstorm Warning | LBF | Blaine, Brown | 50 min |
| Aug 12, 6:44 PM MDT | Tornado Warning | LBF | Perkins | 17 min |
| Aug 12, 6:52 PM MDT | Special Weather Statement | LBF | Hayes | 53 min |
| Aug 12, 7:06 PM MDT | Severe Thunderstorm Warning | LBF | Custer | 39 min |
| Aug 12, 7:08 PM MDT | Severe Thunderstorm Warning | LBF | Lincoln | 52 min |
| Aug 12, 7:13 PM MDT | Areal Flood Advisory | LBF | Lincoln | 2 hr |
| Aug 12, 7:15 PM MDT | Areal Flood Advisory | LBF | Custer | 2 hr |
| Aug 12, 7:18 PM MDT | Special Weather Statement | LBF | Loup | 42 min |
| Aug 12, 7:23 PM MDT | Flash Flood Warning | LBF | Hayes | 6 hr |
| Aug 12, 7:30 PM MDT | Areal Flood Advisory | LBF | Custer | 2 hr |
| Aug 12, 7:37 PM MDT | Areal Flood Advisory | LBF | Custer | 113 min |
| Aug 12, 7:41 PM MDT | Severe Thunderstorm Warning | LBF | Custer | 49 min |
| Aug 12, 7:50 PM MDT | Special Weather Statement | LBF | Loup | 40 min |
| Aug 12, 7:53 PM MDT | Special Weather Statement | LBF | Lincoln | 52 min |
| Aug 12, 8:08 PM MDT | Severe Thunderstorm Warning | LBF | Custer | 39 min |
| Aug 12, 8:19 PM MDT | Severe Thunderstorm Warning | LBF | Blaine, Custer, Loup | 41 min |
| Aug 12, 8:24 PM MDT | Flash Flood Warning | LBF | Custer | 6 hr |
| Aug 13, 3:17 PM MDT | Special Weather Statement | LBF | Blaine | 43 min |
| Aug 13, 3:33 PM MDT | Severe Thunderstorm Warning | LBF | Blaine, Custer | 42 min |
| Aug 13, 3:37 PM MDT | Special Weather Statement | LBF | Logan | 38 min |
| Aug 13, 3:56 PM MDT | Severe Thunderstorm Warning | LBF | Custer | 49 min |
| Aug 13, 3:58 PM MDT | Severe Thunderstorm Warning | LBF | Blaine, Loup | 47 min |
| Aug 13, 4:02 PM MDT | Flash Flood Warning | LBF | Custer | 6 hr |
| Aug 13, 4:28 PM MDT | Special Weather Statement | LBF | Perkins | 47 min |
| Aug 13, 4:37 PM MDT | Special Weather Statement | LBF | Logan | 38 min |
| Aug 13, 4:40 PM MDT | Special Weather Statement | LBF | Loup | 50 min |
| Aug 13, 4:43 PM MDT | Severe Thunderstorm Warning | LBF | Custer | 47 min |
| Aug 13, 4:56 PM MDT | Special Weather Statement | LBF | Loup | 49 min |
| Aug 13, 5:02 PM MDT | Special Weather Statement | LBF | Logan | 43 min |
| Aug 13, 5:23 PM MDT | Severe Thunderstorm Warning | LBF | Custer | 52 min |
| Aug 13, 5:26 PM MDT | Special Weather Statement | LBF | Loup | 49 min |
| Aug 13, 5:30 PM MDT | Severe Thunderstorm Warning | LBF | Custer | 45 min |
| Aug 13, 5:32 PM MDT | Flash Flood Warning | LBF | Custer | 8 hr |
| Aug 13, 5:39 PM MDT | Severe Thunderstorm Warning | LBF | Custer | 51 min |
| Aug 13, 5:44 PM MDT | Severe Thunderstorm Warning | LBF | Blaine, Loup | 46 min |
| Aug 13, 5:49 PM MDT | Special Weather Statement | LBF | Boyd | 41 min |
Nearby
Dense Fog Advisories in Nebraska, 2017Every dense fog advisory in 2017
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.