1 lightning, as filed by the National Weather Service.
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.
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 Jul 21, 2:00 PM EST, 3 hours 20 minutes earlier.
SOUTHEAST MICHIGAN AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 300 PM EDT MON JUL 21 2003 FOCUS IS ON THE SHORT TERM AS CONVECTION CONTINUES TO BREAK OUT AHEAD OF ADVANCING SHORT WAVE AND SURFACE FRONT THIS AFTERNOON. EAST WEST SURFACE BOUNDARY ACROSS SOUTHERN LOWER WITH BETTER THAN 2K J/KG POOLING ALONG THE BOUNDARY AS DEW POINTS START TO CLIMB TOWARD 70. MID LEVEL WIND FIELDS ARE ALSO GRADUALLY INCREASING AS SHORT WAVE AXIS APPROACHES... INCREASING CHANCES THAT CONVECTION WILL BECOME MORE ORGANIZED WITH TIME. CONVECTION HAS BEEN RELATIVELY SLOW MOVING THIS AFTERNOON.. AND SOME ALIGNMENT ALONG THE BOUNDARY HINTING TOWARD THE POSSIBILITY OF SOME TRAIN ECHOING. THUS HAVE OPTED TO BUMP UP QPF... AND MENTION POSSIBILITY OF HEAVY RAIN IN THE FORECAST. LOOKS LIKE CONVECTION WILL CONTINUE ACROSS MOST OF THE CWA... PARTICULARLY IN THE SOUTH HALF... WELL INTO THE EVENING HOURS. AFTER THAT WILL CUT BACK DRAMATICALLY ON POPS... AND THINGS SHOULD PRETTY MUCH BE OVER BY 06 UTC. MAIN QUESTION AFTER THAT FOR TUESDAY AND WEDNESDAY WILL BE ABILITY TO KICK OFF SCATTERED SHOWERS UNDER THE UPPER COLD POOL. BOTH DAYS... AFTERNOON STABILITY INDICES POINT TOWARD UNSTABLE ENOUGH PROFILES TO JUSTIFY SMALL POPS... ALTHOUGH A FOCUSING MECHANISM WILL BE SOMEWHAT LACKING. HAVE OPTED TO CONTINUE/INCLUDE SMALL POPS EACH AFTERNOON... AND REMOVE POPS FOR THE MORE STABLE OVERNIGHT/MORNING PERIODS. LITTLE CHANGE TO LATER PERIODS OF THE FORECAST... WITH A GENERALLY COOLER THAN NORMAL TREND THROUGH THE WEEKEND. .DTX...NONE. EXPERIMENTAL GRAPHICAL FORECASTS ARE AVAILABLE ONLINE AT HTTP://WWW.CRH.NOAA.GOV/DTX (ALL LOWER CASE)
MIZ047>049-053>055-060>063-068>070-075-076-082-083-221000- HAZARDOUS WEATHER OUTLOOK...CORRECTED NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 1210 PM EDT MON JUL 21 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST LOWER MICHIGAN .DAY ONE...THIS AFTERNOON AND TONIGHT NUMEROUS THUNDERSTORMS ARE EXPECTED ACROSS ALL OF SOUTHEAST MICHIGAN THIS AFTERNOON. LOCATIONS NEAR FLINT...OWOSSO AND THE TRI CITIES WILL SEE THESE THUNDERSTORMS MOVE IN FROM THE WEST SHORTLY AFTER 1 PM. MEANWHILE...LOCATIONS ACROSS THE THUMB AND AROUND THE METRO DETROIT AREA WILL SEE MORE NUMEROUS THUNDERSTORMS AFTER 3 PM. THUNDERSTORMS WILL DIMINISH ACROSS THE AREA BY 8 PM THIS EVENING. SOME OF THE STRONGER STORMS THIS AFTERNOON AND EARLY THIS EVENING MAY PRODUCE WIND GUSTS TO 60 MPH AND HAIL TO 1 INCH IN DIAMETER. FREQUENT LIGHTNING AND TORRENTIAL RAINFALL CAN BE EXPECTED WITH ANY THUNDERSTORM THAT DEVELOPS THIS AFTERNOON. THIS MAY LEAD TO SOME LOCALIZED FLOODING IN LOCATIONS ALONG AND SOUTH OF AN ANN ARBOR TO DETROIT LINE DUE TO THE RAINFALL RECEIVED LAST NIGHT. THE THUNDERSTORMS WILL MOVE EAST AT 20 MPH. THESE THUNDERSTORMS ARE ASSOCIATED WITH A COLD FRONT AND WEAK LOW PRESSURE SYSTEM THAT WILL SLOWLY BE MOVING EAST ACROSS THE STATE THIS AFTERNOON AND EVENING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY ISOLATED THUNDERSTORMS ARE POSSIBLE TUESDAY AFTERNOON AND WEDNESDAY AFTERNOON...BUT SEVERE WEATHER IS NOT EXPECTED. THERE IS A CHANCE OF THUNDERSTORMS AGAIN ON SUNDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EARLY THIS EVENING. && STAY TUNED TO NOAA WEATHER RADIO...OR LOCAL MEDIA OUTLETS...FOR THE LATEST FORECAST INFORMATION FROM THE NATIONAL WEATHER SERVICE. YOU CAN ALSO OBTAIN THE LATEST FORECAST ON THE NATIONAL WEATHER SERVICE WEB SITE HTTP://WWW.CRH.NOAA.GOV/DTX/ (ALL LOWER CASE) CONSIDINE
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
447 PM EDT MON JUL 21 2003
TIME(EDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0335 PM HADLEY MI .75 INCH HAIL
07/21/03 LAPEER REPORTED BY GOLF COURSE
EMPLOYEE.
0355 PM ALMONT MI WIND DAMAGE
07/21/03 LAPEER SEVERAL LARGE TREE
BRANCHES WERE BLOWN DOWN.
REPORTED BY SPOTTERS.
0355 PM ALMONT MI 1.00 INCH HAIL
07/21/03 LAPEER REPORTED BY SPOTTERS
0315 PM 3 S DAVISON MI .75 INCH HAIL
07/21/03 GENESEE REPORTED BY SPOTTERS
SCThe Detroit radar (KDTX), 87 km away, was scanning. The volume nearest the first event began at 22:19 UTC.
1 lightning. Local standard time, as filed.
Emergency management reported a female struck by lightning on Meanwell road. The female was conscious at the time.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2003Every state in 2003This day in weather historyWarnings in Michigan, July 2003
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: 5367123.