Michigan, 2001

Heavy Snow in Michigan, December 23 to 24, 2001

December 23 to 24, 2001 · NWS IWX · 2 events in 2 counties and zones

2 heavy snow, as filed by the National Weather Service.

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.

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

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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 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 Dec 23, 9:30 PM EST, 30 minutes earlier.

Area forecast discussion, Dec 23, 9:30 PM EST, 30 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
930 PM EST SUN DEC 23 2001

NO CHANGES PLANNED THIS EVE TO GOING FCST/HEADLINES. 00Z UPR AIR
ANLYSIS SHOWING DEEP MOISTURE REMAINING OVR GRTLKS REGION. S/WV
WHICH MOVED THRU THIS AFTN PRODUCED A BAND OF SNOW SHOWERS WITH
BRIEF HEAVY SNOW RESULTING IN MINOR ACCUM. ANOTHER S/WV MOVG INTO
THE MID MS VLY WAS CAUSING AN AREA OF LIGHT SNOW OVER SE WI, NE IL,
AND NW IN WHICH WILL MOVE ACRS OUR CWA OVRNGT. NRN BERRIEN COUNTY
SHD RECEIVE A LTL MORE SNOW WITH THIS TROF THAN REST OF AREA DUE TO
LAKE ENHANCEMENT WITH 250DEG LOW LVL FLOW. LOW LVL WINDS BEHIND THE
TROF WL VEER FM WSW TO WNW SHIFTING MULTIPLE BANDS OF LES SOUTH THRU
BERRIEN, AND INTO CASS MI, NRN ST JOSEPH IN, AND NE LAPORTE COUNTIES
BY MON MORNING. ACARS SHOWING INVERSION OVR SRN LM 4-5KFT THIS
EVE...A LTL LWR THAN FCST, BUT, STILL SUFFICIENT FOR DECENT LAKE
EFFECT SNOW ACCUM.

.IWX...WINTER STORM WARNING MONDAY AND MONDAY NIGHT MIZ077-078
       WINTER STORM WATCH MONDAY AND MONDAY NIGHT INZ003-004.

JT

The radar

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

Open the radar archive at this moment

Event by event

2 heavy snow. Local standard time, as filed.

Heavy Snow, Cass

When
December 23, 10:00 PM EST to December 24, 10:00 PM EST
Where
Cass forecast zone
Reported by
EMERGENCY MANAGER
Coordinates
41.915, -85.993 (the zone’s center; the record gives no point)

Heavy Snow, Berrien

When
December 23, 10:00 PM EST to December 24, 10:00 PM EST
Where
Berrien forecast zone
Reported by
LAW ENFORCEMENT

Heavy lake effect snow began falling across Cass and Berrien counties the evening of December 23rd and continued throughout the day and night of the 24th. Snow accumulations in 24 hrs averaged one foot across the region. Niles in Berrien county reported 8 inches, with 14 inches in Dowagiac the greatest 24 hour total reported. This event was the first major lake effect snow of the season.

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

More

Every storm in Michigan in 2001Every state in 2001This day in weather historyWarnings in Michigan, December 2001

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: 5274727, 5274728.