Alert archive / Louisiana / Dense Fog Advisories in 2021
Dense Fog Advisory 7, NWS Lake Charles, LA
NWS Lake Charles, LA issued this dense fog advisory at Jan 27, 2021, 3:28 AM CST for Lafayette Parish, Saint Landry Parish, Saint Martin Parish, Louisiana. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jan 27, 2021, 3:28 AM CST (09:28 UTC)
- Expired
- Jan 27, 2021, 6:00 AM CST
- In force
- 3 hr
- Issued by
- NWS Lake Charles, LA
Counties Lafayette Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA
The radar
The Lake Charles radar (KLCH), 129 km from the middle of the area, began a volume at 09:32 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
Slidell Radar S, LA (KSIL), launched 00:00Z, 9.5 hours before the alert went out and 211 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
- 664 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 325 m²/s²
- 0-3 km storm-relative helicity
- 351 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.0
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 Lake Charles, LA wrote its last area forecast discussion before this dense fog advisory went out at Jan 26, 11:54 PM CST, 3 hours 34 minutes earlier.
Area forecast discussion, Jan 26, 11:54 PM CST, 3 hours 34 minutes before
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</html>Hazardous weather outlook, Jan 26, 3:44 PM CST, 11 hours 44 minutes before
Hazardous Weather Outlook National Weather Service Lake Charles LA 344 PM CST Tue Jan 26 2021 LAZ027>033-041>045-052>055-073-074-TXZ180-201-215-216-259>262-271200- Vernon-Rapides-Avoyelles-Beauregard-Allen-Evangeline-St. Landry- Calcasieu-Jefferson Davis-Acadia-Lafayette-Upper St. Martin- Vermilion-Iberia-St. Mary-Lower St. Martin-West Cameron-East Cameron- Tyler-Hardin-Jefferson-Orange-Northern Jasper-Northern Newton- Southern Jasper-Southern Newton- 344 PM CST Tue Jan 26 2021 This Hazardous Weather Outlook is for central Louisiana, south central Louisiana, southwest Louisiana, west central Louisiana and southeast Texas. .DAY ONE...This afternoon and tonight. Scattered showers and isolated thunderstorms are expected across South Central Louisiana. No severe thunderstorms are expected at this time. Patchy fog is expected tonight mainly along and south of the I-10 corridor. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. A stronger cold front is forecast to push through the area early Wednesday. Brisk and gusty north winds are expected in the wake of the front Wednesday afternoon, with cooler and drier weather expected through Friday. Small rain chances return Saturday into Sunday with the passage of another front. No severe weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. GMZ455-472-475-271200- Coastal waters from Lower Atchafalaya River to Intracoastal City LA out 20 NM- Waters from Intracoastal City to Cameron LA from 20 to 60 NM- Waters from Lower Atchafalaya River to Intracoastal City LA from 20 to 60 NM- 344 PM CST Tue Jan 26 2021 ...DENSE FOG ADVISORY IN EFFECT UNTIL 6 AM CST WEDNESDAY... This Hazardous Weather Outlook is for the Gulf of Mexico. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Dense Fog Advisory. PAreas of dense marine fog will continue today along and south of a stalled frontal boundary. Scattered showers and isolated thunderstorms are also possible near the front. No severe thunderstorms are expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. A stronger cold front will move through the area late tonight into Wednesday morning. Strong and gusty north winds are expected Wednesday and Wednesday night in the wake of this front. Small craft advisories are likely to be needed over the Gulf waters. Otherwise, no hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. GMZ430-432-435-450-452-470-271200- Sabine Lake-Calcasieu Lake-Vermilion Bay- Coastal waters from Cameron LA to High Island TX out 20 NM- Coastal waters from Intracoastal City to Cameron LA out 20 NM- Waters from Cameron LA to High Island TX from 20 to 60 NM- 344 PM CST Tue Jan 26 2021 This Hazardous Weather Outlook is for the Gulf of Mexico and the coastal lakes and bays of the Gulf of Mexico. .DAY ONE...This afternoon and tonight. Scattered showers and isolated thunderstorms are possible near a stalled frontal boundary. No severe thunderstorms are expected. Patchy fog is also possible across the Gulf waters today, especially near and to the south of the front. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. A stronger cold front will move through the area late tonight into Wednesday morning. Strong and gusty north winds are expected Wednesday and Wednesday night in the wake of this front. Small craft advisories are likely to be needed over the Gulf waters. Otherwise, no hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The office that day
Everything else NWS Lake Charles, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 26, 8:34 PM CST | Small Craft Advisory | LCH | 36 hr |
Nearby
Dense Fog Advisories in Louisiana, 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.