3 marine thunderstorm wind, as filed by the National Weather Service.
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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.
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 Gaylord, MI wrote its last area forecast discussion before the first event at Sep 23, 9:37 PM EST, 21 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GAYLORD MI 1037 PM EDT MON SEP 23 2002 THE LATEST APX 88D SHOWS SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS MOVING OVER NORTHWEST LOWER MICHIGAN AND EAST UPPER MICHIGAN. THE REGIONAL RADAR DATA SHOWS SCATTERED SHOWERS OVER LAKE SUPERIOR AND CENTRAL/EASTERN UPPER MICHIGAN...WITH THE REST OF THE GREAT LAKES REGION UNDER GENERALLY DRY CONDITIONS. ALL RADAR DATA HAS BEEN SHOWING A CONSISTENT DECREASE IN REF TRENDS AND AREAL COVERAGE OVER THE PAST HOUR. THE LATEST SURFACE CHART SHOWS AN AREA OF LOW PRESSURE OVER THE NORTHERN LAKES...WITH A TROUGH STRETCHING SOUTH OVER LAKE MICHIGAN. THE LATEST RUC DATA SHOWS THE SURFACE LOW TO MOVE INTO THE NORTHEAST GREAT LAKES BETWEEN 06Z AND 09Z. AT 500 MB...A VORT MAX AND UPPER TROUGH WILL MOVE OVER THE WESTERN LAKES THIS EVENING...BEFORE MOVING INTO THE EASTERN LAKES BETWEEN 06Z AND 09Z. THE LATEST RUC DATA SHOWS THE CONVECTION CURRENTLY FIRING OVER THE WESTERN LAKES... HAS FORMED IN A WEAK THTE RIDGE WHICH HAS COMBINED WITH COLD TEMPERATURES ALOFT. 500 MB TEMPERATURES ARE AROUND 25C AND ARE FORECAST TO REMAIN AROUND -25C INTO THE EARLY MORNING HOURS. THIS WILL CREATE A 700/500MB LAPSE RATE AROUND 8C/KM. THE LATEST MODEL DATA SHOWS THE THTE RIDGE TO MOVE EAST THIS EVENING...BECOMING LOCATED OVER LAKE HURON AROUND 06Z...WHICH WILL HINDER CONVECTION DURING THE OVERNIGHT HOURS. THE LATEST IR SATELLITE LOOP AND RADAR TRENDS SHOW WARMING CLOUD TOPS...DIMINISHING REF TRENDS AND DECREASING VILS...AND WOULD EXPECT THAT TREND TO CONTINUE AS THE THTE RIDGE PUSHES EAST. ALSO THE INCREASE IN THUNDERSTORM ACTIVITY THIS EVENING OVER THE NORTHWEST...WAS DUE TO THE INCREASE IN OVER WATER INSTABILITY. 850 MB TEMPERATURES WERE AROUND 2C ON THE APX EVENING SOUNDINGS...WHILE THE NORTHERN LAKE MICHIGAN WATER TEMPERATURES WERE AROUND 19C. THIS HELPED TO INCREASE THE AREAL COVERAGE OF THE THUNDERSTORMS AS THE PASSED OVER LAKE MICHIGAN. HOWEVER MUCH MORE STABLE CONDITIONS ARE EXPECTED OVER LAND INTO THE OVERNIGHT HOURS. THEREFORE WILL MENTION MOSTLY CLOUDY...WITH A FEW LINGERING SHOWERS OVERNIGHT NORTH. .APX...NONE. SWR
The NCL Michigan radar (KAPX), 103 km away, was scanning. The volume nearest the first event began at 02:56 UTC.
3 marine thunderstorm wind. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Lake Huron in 2002Every state in 2002This day in weather history
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: 5321251, 5321252, 5321253.