Heavy Snow, St. Clair
- When
- March 20, 7:00 PM EST to March 21, 7:00 AM EST
- Where
- St. Clair forecast zone
- Coordinates
- 42.931, -82.664 (the zone’s center; the record gives no point)
Heavy Snow in Michigan, March 20 to 21, 1998
A low pressure area moved east across the Tennessee Valley on the 20th, and proceeded across the southern Appalachians on the 21st. Southeast Michigan was on the northern fringe of the precipitation area from this low.
Where it happened
Every event with a place to put it; 2 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
- 2
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 DTX wrote it up.
A low pressure area moved east across the Tennessee Valley on the 20th, and proceeded across the southern Appalachians on the 21st. Southeast Michigan was on the northern fringe of the precipitation area from this low. It appears that some lake enhancement took place along the east shore of the Thumb, as this was where the heaviest snowfall occurred. The road commissions of both Sanilac and St. Clair Counties reported accumulations of up to 6 inches. Further south across Metro Detroit, 2 to 5 inch accumulations were common.
The radar
The national radar mosaic for the moment the first event began.
Event by event
2 heavy snow. Local standard time, as filed.
Heavy Snow, Sanilac
- When
- March 20, 8:00 PM EST to March 21, 8:00 AM EST
- Where
- Sanilac forecast zone
- Coordinates
- 43.443, -82.646 (the zone’s center; the record gives no point)
What these are
- Heavy Snow
- Snowfall reaching the local warning threshold without the other hazards of a winter storm.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornadoes in Georgia, March 20, 1998
- Tornadoes and Hail in North Carolina, March 20, 1998
- Tornadoes in North Carolina, March 20, 1998
- Tornado in North Carolina, March 20, 1998
- Tornado in North Carolina, March 20, 1998
- Tornadoes and Flash Flooding in Virginia, March 20, 1998
- Flood in Florida, March 20 to 31, 1998
- Storm Surge in Ohio, March 20 to 21, 1998
- Damaging Wind in Tennessee, March 20, 1998
- Flood in Florida, March 20, 1998
- Flash Flooding in Virginia, March 20 to 21, 1998
- Tornado in North Carolina, March 20, 1998
More
Every storm in Michigan in 1998Every state in 1998This day in weather historyWarnings in Michigan, March 1998
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: 5633042, 5633043.