Dense Fog in Missouri, September 26, 2009

Name: Dense Fog in Missouri, September 26, 2009
Start: 2009-09-26T00:00
End: 2009-09-26T05:00
Location: Missouri

September 26, 2009 · NWS PAH · 7 events in 7 counties and zones

Dense fog formed as a result of calm winds and moist air under a high pressure system. Rain during the previous 24 hours moistened the ground, contributing to high humidity.

Where it happened

Every event with a place to put it; 7 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 7

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS PAH wrote it up.

Dense fog formed as a result of calm winds and moist air under a high pressure system. Rain during the previous 24 hours moistened the ground, contributing to high humidity. Visibility was below a quarter mile during the late night hours.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Paducah, KY wrote its last area forecast discussion before the first event at Sep 25, 8:10 PM CST, 3 hours 50 minutes earlier.

Area forecast discussion, Sep 25, 8:10 PM CST, 3 hours 50 minutes before

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Hazardous weather outlook, Sep 25, 7:32 PM CST, 4 hours 28 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PADUCAH KY
832 PM CDT FRI SEP 25 2009

ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087-
100-107>112-114-261000-
JEFFERSON-WAYNE IL-EDWARDS-WABASH-PERRY IL-FRANKLIN-HAMILTON-
WHITE-JACKSON-WILLIAMSON-SALINE-GALLATIN-UNION IL-JOHNSON-POPE-
HARDIN-ALEXANDER-PULASKI-MASSAC-GIBSON-PIKE-POSEY-VANDERBURGH-
WARRICK-SPENCER-FULTON-HICKMAN-CARLISLE-BALLARD-MCCRACKEN-GRAVES-
LIVINGSTON-MARSHALL-CALLOWAY-CRITTENDEN-LYON-TRIGG-CALDWELL-
UNION KY-WEBSTER-HOPKINS-CHRISTIAN-HENDERSON-DAVIESS-MCLEAN-
MUHLENBERG-TODD-PERRY MO-BOLLINGER-CAPE GIRARDEAU-WAYNE MO-CARTER-
RIPLEY-BUTLER-STODDARD-SCOTT-MISSISSIPPI-NEW MADRID-
832 PM CDT FRI SEP 25 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHERN
ILLINOIS...SOUTHWEST INDIANA...WESTERN KENTUCKY AND SOUTHEAST
MISSOURI.

.DAY ONE...TONIGHT

THERE IS A SMALL RISK OF THUNDERSTORMS TONIGHT...MAINLY ACROSS THE
PENNYRILE REGION OF WESTERN KENTUCKY EAST OF THE LAND BETWEEN THE
LAKES. SEVERE WEATHER IS NOT EXPECTED...BUT LOCALLY HEAVY RAINFALL
CANNOT BE RULED OUT.

IN ADDITION...AREAS OF DENSE FOG WILL BE POSSIBLE LATE
TONIGHT...ESPECIALLY ALONG AND NORTHWEST OF THE OHIO RIVER.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A SMALL CHANCE OF THUNDERSTORMS IS FORECAST SATURDAY MORNING EAST
OF A LINE FROM MT CARMEL ILLINOIS TO SIKESTON MISSOURI. SEVERE
WEATHER IS NOT EXPECTED...BUT ANY THUNDERSTORM WILL LIKELY CONTAIN
LOCALLY HEAVY RAINFALL.

FOR SATURDAY AFTERNOON THE CHANCE OF THUNDERSTORMS SHIFTS TO THE
NORTHWEST ACROSS SOUTHEAST MISSOURI...SOUTHERN ILLINOIS AND
SOUTHWEST INDIANA. AT THIS TIME...WIDESPREAD SEVERE WEATHER IS NOT
ANTICIPATED...BUT ISOLATED STORMS MAY BE CAPABLE OF PRODUCING HALF
INCH TO ONE INCH HAIL AND DAMAGING WIND GUSTS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

In the hours before

Special weather statement, Sep 25, 9:42 PM CST, 2 hours 18 minutes before

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The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

7 dense fog. Local standard time, as filed.

Dense Fog, Bollinger

When: September 26, 12:00 AM CST to 5:00 AM CST
Where: Bollinger forecast zone
Reported by: AWOS
Coordinates: 37.322, -90.026 (the zone’s center; the record gives no point)

Dense Fog, Cape Girardeau

When: September 26, 12:00 AM CST to 5:00 AM CST
Where: Cape Girardeau forecast zone
Reported by: ASOS
Coordinates: 37.384, -89.684 (the zone’s center; the record gives no point)

Dense Fog, Mississippi

When: September 26, 12:00 AM CST to 5:00 AM CST
Where: Mississippi forecast zone
Reported by: AWOS
Coordinates: 36.828, -89.291 (the zone’s center; the record gives no point)

Dense Fog, New Madrid

When: September 26, 12:00 AM CST to 5:00 AM CST
Where: New Madrid forecast zone
Reported by: AWOS
Coordinates: 36.595, -89.652 (the zone’s center; the record gives no point)

Dense Fog, Perry

When: September 26, 12:00 AM CST to 5:00 AM CST
Where: Perry forecast zone
Reported by: AWOS
Coordinates: 37.707, -89.824 (the zone’s center; the record gives no point)

Dense Fog, Scott

When: September 26, 12:00 AM CST to 5:00 AM CST
Where: Scott forecast zone
Reported by: AWOS
Coordinates: 37.053, -89.568 (the zone’s center; the record gives no point)

Dense Fog, Stoddard

When: September 26, 12:00 AM CST to 5:00 AM CST
Where: Stoddard forecast zone
Reported by: AWOS
Coordinates: 36.856, -89.944 (the zone’s center; the record gives no point)

What these are

Dense Fog: Fog reducing visibility to a quarter mile or less, filed where it caused accidents or disruption.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Missouri in 2009 Every state in 2009 This day in weather history Warnings in Missouri, September 2009

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-30. Each event’s entry at NCEI: 194409, 194410, 194411, 194412, 194413, 194414, 194415.