Alert archive / Missouri / Dense Fog Advisories in 2016

Dense Fog Advisory 13, NWS St. Louis, MO

September 19, 201612 counties in Missouri; 9 counties in Illinois

NWS St. Louis, MO issued this dense fog advisory at Sep 19, 2016, 2:44 AM CDT for 12 counties in Missouri; 9 counties in Illinois. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued: Sep 19, 2016, 2:44 AM CDT (07:44 UTC)
Expired: Sep 19, 2016, 9:00 AM CDT
In force: 6 hr
Issued by: NWS St. Louis, MO

All 21 counties

Bond County, IL, Clinton County, IL, Fayette County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Randolph County, IL, Saint Clair County, IL, Washington County, IL, City of Saint Louis, MO, Crawford County, MO, Franklin County, MO, Iron County, MO, Jefferson County, MO, Madison County, MO, Reynolds County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Washington County, MO

The radar

The St Louis radar (KLSX), 64 km from the middle of the area, began a volume at 07:46 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.

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 St. Louis, MO wrote its last area forecast discussion before this dense fog advisory went out at Sep 18, 6:28 PM CDT, 8 hours 16 minutes earlier.

Area forecast discussion, Sep 18, 6:28 PM CDT, 8 hours 16 minutes before

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Hazardous weather outlook, Sep 18, 3:25 PM CDT, 11 hours 19 minutes before

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Nearby

Dense Fog Advisories in Missouri, 2016 Dense Fog Advisories in Illinois, 2016 Every dense fog advisory in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.