Colorado, 2015Dense Fog in Colorado, April 18, 2015
April 18, 2015 · NWS GJT · 1 event in 1 county or zone
Rain and snow fell the day before and as temperatures dropped overnight, widespread fog formed across the Grand Valley.
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- Deaths
- 0
- 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.
Rain and snow fell the day before and as temperatures dropped overnight, widespread fog formed across the Grand Valley.
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 Grand Junction, CO wrote its last area forecast discussion before the first event at Apr 18, 5:27 AM MST, 33 minutes earlier.
Area forecast discussion, Apr 18, 5:27 AM MST, 33 minutes before
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</html>Hazardous weather outlook, Apr 18, 3:43 AM MST, 2 hours 17 minutes before
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</html>Dense Fog, Grand Valley
- When
- April 18, 6:00 AM MST to 9:00 AM MST
- Where
- Grand Valley forecast zone
- Reported by
- ASOS
- Coordinates
- 39.308, -108.185 (the zone’s center; the record gives no point)
Grand Junction Airport visibility dropped down to 1/4 mile for 1 hour. NWS employee also reported dense fog at their house.
- 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.
- Tornado and Flash Flood in Texas, April 18, 2015$352,000 · EF0 · 47 events
- Hail in Nebraska, April 18, 2015$350,000 · 2 in hail · 6 events
- Tornado and Hail in Mississippi, April 18 to 19, 2015$160,000 · EF0 · 21 events
- Tornado and Hail in Oklahoma, April 18, 2015EF1 · 34 events
- Hail and Damaging Winds in Texas, April 18, 2015$21,000 · 2 in hail · 22 events
- Hail and Damaging Wind in Iowa, April 18, 2015$51,000 · 1 in hail · 2 events
- Hail in Kansas, April 18, 20151.5 in hail · 15 events
- Flood and Hail in Kansas, April 18 to 19, 20151.75 in hail · 15 events
- Flash Flooding and Hail in Texas, April 18, 2015$10,000 · 1.75 in hail · 11 events
- Flash Flooding and Hail in Texas, April 18, 20150.75 in hail · 3 events
- Wildfire in Pennsylvania, April 18 to 20, 20153 events
- Hail in Kansas, April 18, 20151 in hail · 3 events
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 2026-10-01. Each event’s entry at NCEI: 655085.