2 hail, 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 Grand Rapids, MI wrote its last area forecast discussion before the first event at Apr 30, 8:33 PM EST, 1 hour 31 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND RAPIDS MI 933 PM EDT WED APR 30 2003 INGREDIENTS ARE STILL THERE FOR A STRONG RETURN OF THE CONVECTION ...BEGINNING AROUND MIDNIGHT. ALOFT OVER MI...THERE IS THE RIGHT ENTRANCE REGION OF A 250 MB JET...PROVIDING FAVORABLE UPPER LEVEL DIVERGENCE. FURTHER DOWN THROUGH THE ATMOSPHERE...A 40 TO 50 KNOT 850 MB JET IS EXPECTED TO FORM UPSTREAM THIS EVENING...AND THEN ARRIVE IN SOUTHWEST LOWER MICHIGAN AFTER MIDNIGHT. ALREADY THIS FEATURE WAS HELPING TO TRIGGER THE STORMS UPSTREAM ACROSS EASTERN IA AND THE WINCHESTER IL PROFILER HAS PICKED IT UP WITH 850 MB WINDS FROM THE SOUTHWEST AT 40 KNOTS. WITH A LOW LEVEL NORTHEAST FLOW ACROSS THE AREA TONIGHT...THE ARRIVAL OF THE LOW LEVEL JET WILL BRING ON HIGH HELICITY VALUES. HOWEVER THE CONVECTION IS EXPECTED TO BECOME MORE ELEVATED AS IT APPROACHES SOUTHWEST LOWER MI AND THEREFORE THE PRIMARY THREATS WOULD BE HAIL AND SOME HIGH WIND. IN ADDITION...HEAVY RAIN IS EXPECTED. THE LATEST RUC SHOWS DIFFLUENT 1000/500 MB THICKNESS VALUES AFTER MIDNIGHT WITH NEARLY UNIDIRECTIONAL FLOW THROUGH A DEEP LAYER. A SHARP 850 MB THETA E RIDGE ARRIVES AS WELL SO RAINFALL AMOUNTS OF 2 INCHES IN A FEW PLACES APPEARS LIKELY FLASH FLOOD GUIDANCE FROM THE RIVER FORECAST CENTER SUGGESTS AMOUNTS OF AROUND 3 INCHES IN 3 HOURS ARE NEED TO INITIATE SOME FLASH FLOODING SO NO WATCH WILL BE ISSUED AT THIS TIME. .GRR...NONE. MJS
MIZ037>040-043>046-050>052-056>059-064>067-071>074-011000- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND RAPIDS MI 845 PM EDT WED APR 30 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE SOUTHWEST QUARTER OF LOWER MICHIGAN. .DAY ONE....TONIGHT THE STORM PREDICTION CENTER HAS PLACED MOST OF SOUTHWEST LOWER MICHIGAN IN THE SLIGHT RISK OF SEVERE THUNDERSTORMS TONIGHT. SPECIFICALLY...THIS AREA IS SOUTH OF A WHITEHALL TO MOUNT PLEASANT LINE. WHILE THE THUNDERSTORMS HAVE DIMINISHED EARLY THIS EVENING ...THEY ARE EXPECTED TO REDEVELOP AROUND MIDNIGHT FROM THE SOUTHWEST. THE STRONGEST STORMS COULD PRODUCE HAIL UP TO AN INCH IN DIAMETER AND WINDS TO 60 MPH. ALSO...WHERE THE STORMS PERSIST...LOCALLY EXCESSIVE RAIN COULD RESULT IN URBAN AND POOR DRAINAGE FLOODING. LOCALLY 2 INCHES OF RAIN COULD FALL. THE STORMS WILL BE MOVING EAST NORTHEAST AT 35 MPH. ONCE THE STORMS RETURN...THEY ARE EXPECTED TO PERSIST THROUGH MUCH OF THE NIGHT. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A FEW THUNDERSTORMS MAY LINGER ON THURSDAY MORNING...BUT THESE STORMS ARE NOT EXPECTED TO BE SEVERE. HIGH PRESSURE WILL BRING A DRY WEEKEND...ALTHOUGH FROST AND FREEZING TEMPERATURES WILL BE POSSIBLE AT NIGHT. A CHANCE OF SHOWERS AND THUNDERSTORMS WILL RETURN EARLY NEXT WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS A DISTINCT POSSIBILITY AFTER MIDNIGHT. MORE INFORMATION MAY BE OBTAINED AT THE FOLLOWING URL: WWW.CRH.NOAA.GOV/GRR MJS
The Grand Rapids radar (KGRR), 100 km away, was scanning. The volume nearest the first event began at 03:03 UTC.
2 hail. Local standard time, as filed.
A severe thunderstorm produced three quarters inch hail 5 miles west of Tekonsha.
One inch diameter hail was reported one mile north of Jackson.
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, April 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: 5349683, 5349684.