Winter Storm, Monona
- When
- April 9, 5:00 PM CST to April 10, 10:00 AM CST
- Where
- Monona forecast zone
- Coordinates
- 42.052, -95.960 (the zone’s center; the record gives no point)
Winter Storm in Iowa, April 9 to 10, 1997
Warm, moist air was lifted over top of an arctic frontal boundary which extended from southeast Colorado to northern Oklahoma. This combined with an upper level disturbance which moved through the central plains to generate widespread snow.
Where it happened
Every event with a place to put it; 4 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
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 4
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 OAX wrote it up.
Warm, moist air was lifted over top of an arctic frontal boundary which extended from southeast Colorado to northern Oklahoma. This combined with an upper level disturbance which moved through the central plains to generate widespread snow. Snowfall of 4 to 6 inches was common.
The radar
The national radar mosaic for the moment the first event began.
Event by event
4 winter storm. Local standard time, as filed.
Winter Storm, Harrison
- When
- April 9, 5:00 PM CST to April 10, 10:00 AM CST
- Where
- Harrison forecast zone
- Coordinates
- 41.683, -95.817 (the zone’s center; the record gives no point)
Winter Storm, Pottawattamie
- When
- April 9, 5:00 PM CST to April 10, 10:00 AM CST
- Where
- Pottawattamie forecast zone
- Coordinates
- 41.337, -95.542 (the zone’s center; the record gives no point)
Winter Storm, Shelby
- When
- April 9, 5:00 PM CST to April 10, 10:00 AM CST
- Where
- Shelby forecast zone
- Coordinates
- 41.685, -95.310 (the zone’s center; the record gives no point)
What these are
- Winter Storm
- A storm that brought snow, sleet or freezing rain at warning levels, usually over several hours or days.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Cold in Pennsylvania, April 9 to 11, 1997
- Cold in Pennsylvania, April 9 to 11, 1997
- Flood in Minnesota, April 9 to 12, 1997
- Cold in Virginia, April 9, 1997
- Cold in Virginia, April 9, 1997
- Cold in North Carolina, April 9, 1997
- Winter Storm in Nebraska, April 9 to 11, 1997
- Heavy Snow in Utah, April 9 to 10, 1997
- Cold in New Jersey, April 9 to 11, 1997
- Winter Storm in South Dakota, April 9 to 10, 1997
- Cold in Kansas, April 9 to 13, 1997
- Heavy Snow in South Dakota, April 9 to 10, 1997
More
Every storm in Iowa in 1997Every state in 1997This day in weather historyWarnings in Iowa, April 1997
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: 5594582, 5594583, 5594584, 5594585.