Dense Fog in Indiana, March 10 to 11, 2015

Name: Dense Fog in Indiana, March 10 to 11, 2015
Start: 2015-03-10T22:00
End: 2015-03-11T11:00
Location: Indiana

March 10 to 11, 2015 · NWS IWX · 1 event in 1 county or zone

Widespread dense fog, with visibilities reduced to as low as 20 feet, created hazardous driving conditions during the morning hours of March 11th. The fog was partially blamed for a 22 car accident that killed 2 people on I-65 in White County.

Where it happened

Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

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Open the live radar over this ground

The toll

Deaths: 2
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 1

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 IWX wrote it up.

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 Northern Indiana wrote its last area forecast discussion before the first event at Mar 10, 8:56 PM EST, 1 hour 4 minutes earlier.

Area forecast discussion, Mar 10, 8:56 PM EST, 1 hour 4 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

1 dense fog. Local standard time, as filed.

Dense Fog, White

When: March 10, 10:00 PM EST to March 11, 11:00 AM EST
Where: White forecast zone
Deaths: 0 direct, 2 indirect
Reported by: Law Enforcement
Coordinates: 40.750, -86.865 (the zone’s center; the record gives no point)

Dense fog played havoc from the late evening hours of March 10th to shortly after sunrise on March 11th, contributing to several accidents and numerous school closings. This dense fog was a factor in 2 separate accidents, the first occurring around 10 pm local time on Interstate 65 near mile marker 188, with a second in the early morning hours of the 11th. A car and semi collided, resulting in the death of a passenger in the car. Other vehicles became involved in the accident with additional injuries reported. A second accident occurred in the same area, likely due to traffic stopping for the first accident, causing yet another fatality as well as several injuries.

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

Event	Date	Age	Sex	Where	Kind
Dense Fog, White	2015-03-10	22	Male	Vehicle/Towed Trailer	Indirect
Dense Fog, White	2015-03-11		Male	Vehicle/Towed Trailer	Indirect

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 Indiana in 2015 Every state in 2015 This day in weather history Warnings in Indiana, March 2015

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 2026-09-24. Each event’s entry at NCEI: 555817.