Alert archive / Missouri / Dense Fog Advisories in 2019
Dense Fog Advisory 13, NWS St. Louis, MO
NWS St. Louis, MO issued this dense fog advisory at Aug 8, 2019, 3:29 AM CDT for 6 counties in Missouri. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Aug 8, 2019, 3:29 AM CDT (08:29 UTC)
- Expired
- Aug 8, 2019, 7:44 AM CDT
- In force
- 4 hr
- Issued by
- NWS St. Louis, MO
Counties Crawford County, MO, Iron County, MO, Madison County, MO, Reynolds County, MO, Saint Francois County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 113 km from the middle of the area, began a volume at 08:33 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
Springfield, MO (KSGF), launched 00:00Z, 8.5 hours before the alert went out and 281 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
- 1618 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 204 m²/s²
- 0-3 km storm-relative helicity
- 236 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
Nearby
Dense Fog Advisories in Missouri, 2019Every dense fog advisory in 2019
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.