1 marine thunderstorm wind, as filed by the National Weather Service.
Every event with a place to put it. Tap one for its entry below.
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 Detroit, MI wrote its last area forecast discussion before the first event at Jun 21, 9:40 AM EST, 1 hour 50 minutes earlier.
SOUTHEAST MICHIGAN AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 1040 AM EDT FRI JUN 21 2002 ...THUNDERSTORMS PRODUCING HEAVY RAINFALL THE MAIN CONCERN... FRONTAL BOUNDARY WAS JUST TO THE NORTH OF FLINT EXTENDING TO THE COUNTY BORDERS OF ST CLAIR AND SANILAC. PLENTY OF CONVECTION FIRING ALONG THE BOUNDARY WITH MOVEMENT QUITE SLOW TO THE EAST. LATEST 88D PRECIP RATES NEAR 1 PER HOUR IN SPOTS TO THE WEST WITH METARS SHOWING ABOUT HALF AS MUCH (RAINFALL AMOUNTS LIKELY HIGHER OUTSIDE OF METAR REPORTS). 88D CROSS SECTIONS SHOW THE HIGHEST REFLECTIVITIES CLOSER TO THE SURFACE WHICH INDICATES PLENTY OF WATER FALLING...NOT MUCH IF ANY HAIL. WIND PROFILES ARE ALSO QUITE WEAK HENCE THE SLOW MOVEMENT AND MINIMAL WIND DAMAGE POTENTIAL. QUESTION FOR THE AFTERNOON IS THUNDERSTORMS. AFOREMENTIONED BOUNDARY ACROSS THE NORTH WITH ANOTHER WEAK AREA OF CONVERGENCE ACROSS NORTHERN INDIANA AND NORTHWEST OHIO. HIGH THETA-E AIR OVER THE STATE WITH PWATS OVER 1.75 PER RAOBS AND LAPS SOUNDINGS. LAPS INFORMATION ALSO CONTINUES WITH LI/S NEAR -4C WITH CAPES AROUND 1K J/KG. BASED ON 850-300MB THICKNESS SCHEME AND THE THERMAL WIND...THESE STORMS WILL BE SLOW MOVERS...EAST BETWEEN 10-15 MPH. FAVORABLE THICKNESS DIFLUENCE OVER SOUTHEAST LOWER AND K INDEX VALUES INTO THE LOWER 30S C. FFG FROM THIS MORNING POINTS TO AROUND 2.5 OF RAIN WITHIN 3-6 HOUR TIME FRAME...SO THIS WILL HAVE TO BE CLOSELY MONITORED. WE WILL UPDATE THE CURRENT FORECAST TO SCATTERED AND WATCH SHORT TERMS VERY CLOSELY. NOW WITH SEVERAL OUTFLOW BOUNDARIES INTERACTING WITH DAYTIME HEATING...THUNDERSTORMS WILL BE SCATTERED CWA-WIDE THANKS TO DIFFERENTIAL HEATING. WARM AND MUGGY CONDITIONS WILL PREVAIL WITH DEWPOINTS NEAR 70F. .DTX...NONE. BGM
MIZ047>049-053>055-060>063-068>070-075-076-082-083-220200- HAZARDOUS WEATHER OUTLOOK FOR SOUTHEAST MICHIGAN NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 1105 AM EDT FRI JUN 21 2002 ...SEVERE WEATHER POTENTIAL STATEMENT FOR SOUTHEAST MICHIGAN... DISPATCHERS...PLEASE NOTIFY YOUR EMERGENCY MANAGERS IMMEDIATELY. HAZARD... SCATTERED THUNDERSTORMS ARE EXPECTED ACROSS ALL OF SOUTHEAST LOWER MICHIGAN THIS AFTERNOON. THE MAIN HAZARD WITH THESE THUNDERSTORMS WILL BE HEAVY RAINFALL...WITH SMALL HAIL ALSO POSSIBLE. DISCUSSION... A FRONTAL BOUNDARY JUST NORTH OF INTERSTATE 69 WILL BE THE MAIN FOCUS FOR THUNDERSTORMS THIS AFTERNOON. THE WINDS IN THE UPPER LEVELS OF THE ATMOSPHERE ARE WEAK WHICH WILL RESULT IN SLOW MOVEMENT OF THUNDERSTORMS. WITH THE WATER CONTENT IN THE ATMOSPHERE QUITE HIGH...THUNDERSTORMS WILL PRODUCE HEAVY RAINFALL RATES. SOME OF THESE RAINFALL RATES WILL BE NEAR 1 INCH PER HOUR...CAUSING LOCALIZED FLOODING...ESPECIALLY IN LOW LYING AND POOR DRAINAGE AREAS. ADDITIONAL BOUNDARIES SOUTH OF INTERSTATE 69 WILL AID IN THE CONTINUED DEVELOPMENT OF THUNDERSTORMS THIS AFTERNOON. AGAIN...THE MAIN HAZARD HERE WILL CONTINUE TO BE HEAVY RAINFALL WITH PEA SIZE HAIL POSSIBLE. THUNDERSTORM MOVEMENT WILL BE TO THE EAST AT 10 AND 15 MPH. SPOTTER ACTIVATION... SPOTTER ACTIVATION IS NOT ANTICIPATED. OUTLOOK FOR SATURDAY AND SUNDAY... ADDITIONAL THUNDERSTORMS ARE EXPECTED ON SATURDAY WITH MAIN HAZARD FROM HEAVY RAINFALL. DRY WEATHER IS FORECAST FOR SUNDAY. STAY TUNED TO NOAA WEATHER RADIO...OR LOCAL MEDIA OUTLETS...FOR THE LATEST FORECAST INFORMATION FROM YOUR NATIONAL WEATHER SERVICE. YOU CAN ALSO OBTAIN THE LATEST FORECAST ON OUR NATIONAL WEATHER SERVICE WEB SITE. HTTP://WWW.CRH.NOAA.GOV/DTX/ (ALL LOWER CASE) BGM
The Detroit radar (KDTX), 110 km away, was scanning. The volume nearest the first event began at 16:29 UTC.
1 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: 5302675.