2 marine thunderstorm wind, as filed by the National Weather Service.
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 May 23, 3:45 PM EST, 3 hours 45 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 445 PM EDT SUN MAY 23 2004 .DISCUSSION... WILL MAKE THIS QUICK. 2500+ CAPE THIS EVENING WITH INCREASING WIND FIELDS. 18Z SOUNDING SUGGESTED 250 FOR 0-3 KM HELICITY AND THAT WILL CONTINUE TO INCREASE ACROSS SOUTHEAST MICHIGAN. EXPECT AS STORMS ACROSS IN MOVE INTO SOUTHERN LOWER MICHIGAN...WE SHOULD SEE THE STORMS INCREASE IN BOTH COVERAGE AND STRENGTH. THEN NEXT WAVE SHOULD MOVE THROUGH WITH THE COLD FRONT CLOSER TO 06Z. ALSO THERE IS THAT POTENT SHORTWAVE THAT WILL MOVE THROUGH OVERNIGHT. MODELS SUGGEST STILL IN EXCESS OF 1500 J/KG AT 06Z OVER SOUTHEAST LOWER MICHIGAN. PRECIPITABLE WATERS WILL STILL HANG AROUND 1.5 INCHES...AND 850 THETA-E RIDGE IS AROUND THIS EVENING...SO HEAVY RAIN IS STILL LIKELY. WILL FOLLOW THE ETA MORE THAN GFS...AS THERE IS SOME CONVECTIVE FEEDBACK ON THE GFS...ESPECIALLY TUESDAY. MONDAY WILL QUIET DOWN A BIT AS WE GET SOME WEAK 500 MB RIDGING AND SURFACE RIDGE BUILD INTO SE MI. MAY HAVE SOME LEFT OVER SHOWERS IN THE MORNING IN THE SAGINAW VALLEY AND THUMB. WILL LOOK FOR TUESDAY FOR THE NEXT CHANCE OF STORMS AND HEAVY RAIN. BY MONDAY NIGHT 40 TO 50 KTS AT 850 FEED MCS FORMATION OVER IA/WI/IL. THIS SHOULD MOVE INTO SOUTHERN LOWER MICHIGAN ON TUESDAY MORNING. THEN AS ANOTHER FRONT MOVES THROUGH THE REGION...MAY SEE ADDITIONAL DEVELOPMENT TUESDAY AFTERNOON. CERTAINLY GOOD ENOUGH TO KEEP LIKELY POPS FOR TUESDAY. PRECIP WATERS INCREASE AGAIN TO 1.5 INCHES WITH AN 850 THETA-E RIDGE OVER LOWER MICHIGAN MOST OF THE DAY. WILL INCLUDE THE CHANCE OF HEAVY RAIN. AFTER TUESDAY...NEXT CHANCE WILL BE ON THURSDAY. BUT THAT SHOULD BE MUCH MORE SCATTERED AND NOT THE SAME POTENTIAL OF HEAVY RAIN GIVEN THE NW FLOW. COLD FRONT MOVES THROUGH THE REGION WITH 500 TEMPS -15C TO NEAR -20C. THIS SHOULD BE ENOUGH FOR A CHANCE OF THUNDERSTORM TOO. BY THEN END OF THE WEEK...A WAVE WILL BE MOVING TOWARD MICHIGAN FROM THE SOUTHWEST. WILL KEEP THE CHANCE OF THUNDERSTORMS FROM FRIDAY AFTERNOON THROUGH SATURDAY. THEN SUNDAY SHOULD BE DRY. BIG TEMP DIFFERENCES IN MOS GUIDANCE. BASICALLY WENT FOR A COMPROMISE FOR ALL PERIODS. && .DTX WATCHES/WARNINGS/ADVISORIES... FLOOD WARNING FOR ALL OF SOUTHEAST MICHIGAN THROUGH NOON MONDAY. TORNADO WATCH FOR MOST OF SOUTHEAST MICHIGAN...EXCEPT MIDLAND...BAY AND HURON COUNTIES...THROUGH 11 PM && RBP EXPERIMENTAL GRAPHICAL FORECASTS ARE AVAILABLE ONLINE AT HTTP://WWW.CRH.NOAA.GOV/DTX (ALL LOWER CASE)
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 450 PM EDT SUN MAY 23 2004 MIZ053>055-060>063-068>070-075-076-082-083-241200- GENESEE-LAPEER-LENAWEE-LIVINGSTON-MACOMB-MONROE-OAKLAND-SAGINAW- SANILAC-SHIAWASSEE-ST. CLAIR-TUSCOLA-WASHTENAW-WAYNE- 450 PM EDT SUN MAY 23 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF SOUTHEAST MICHIGAN .DAY ONE...THIS AFTERNOON AND TONIGHT A TORNADO WATCH IS IN EFFECT THROUGH 11 PM EDT THIS AFTERNOON. REFER TO THE LATEST WATCH STATEMENT FOR ADDITIONAL INFORMATION. A FLOOD WARNING IS IN EFFECT THROUGH NOON ON MONDAY. PLEASE REFER TO THE LATEST FLOOD WARNING STATEMENTS ISSUED BY YOUR NATIONAL WEATHER SERVICE FOR FURTHER DETAILS. THUNDERSTORMS ARE LIKELY THIS AFTERNOON AND TONIGHT...SOME OF WHICH MAY BE SEVERE. THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING. LARGE HAIL OVER 1 INCH IN DIAMETER...DAMAGING WIND GUSTS TO 80 MPH...AND TORNADOES ARE ALL POSSIBLE. THUNDERSTORM MOVEMENT WILL BE EAST AT AROUND 35 MPH. THE CHANCE FOR SEVERE WEATHER SHOULD END BY MIDNIGHT...WITH JUST A CHANCE OF THUNDERSTORMS THE REST OF THE NIGHT. A NEARLY STATIONARY FRONTAL BOUNDARY OVER SOUTHEAST MICHIGAN WILL CONTINUE TO FOCUS SHOWER AND THUNDERSTORM ACTIVITY OVER THE REGION TODAY. THIS FRONTAL BOUNDARY WILL FINALLY EXIT THE AREA MONDAY MORNING. .DAY TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THUNDERSTORMS ARE POSSIBLE AGAIN ON TUESDAY...WITH HEAVY RAINFALL ONCE AGAIN POSSIBLE. THESE THUNDERSTORMS WILL RESULT FROM A LOW PRESSURE SYSTEM TRACKING INTO THE AREA ALONG THIS EXISTING FRONT. THERE WILL BE A CHANCE OF THUNDERSTORMS FROM FRIDAY AFTERNOON INTO SUNDAY MORNING AS ANOTHER LOW PRESSURE SYSTEM TRACKS INTO THE GREAT LAKES. .SPOTTER INFORMATION STATEMENT... PLEASE NOTIFY YOUR EMERGENCY MANAGERS IMMEDIATELY. SPOTTER ACTIVATION WILL LIKELY BE NEEDED THIS AFTERNOON AND EVENING. MIZ047>049-241200- BAY-HURON-MIDLAND- 450 PM EDT SUN MAY 23 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF THE SAGINAW VALLEY AND NORTHERN THUMB REGIONS. .DAY ONE...THIS AFTERNOON AND TONIGHT A FLOOD WARNING IS IN EFFECT THROUGH NOON ON MONDAY. PLEASE REFER TO THE LATEST FLOOD WARNING STATEMENTS ISSUED BY YOUR NATIONAL WEATHER SERVICE FOR FURTHER DETAILS. THUNDERSTORMS ARE LIKELY THIS AFTERNOON INTO TONIGHT...WITH AREAS OF HEAVY RAINFALL AGAIN POSSIBLE. THERE IS ALSO A SLIGHT CHANCE OF SEVERE THUNDERSTORMS. HOWEVER...THE BETTER CHANCE OF SEVERE STORMS EXISTS FURTHER SOUTH. NONETHELESS...HAIL TO 1 INCH IN DIAMETER AND DAMAGING WINDS UP TO 70 MPH WILL BE POSSIBLE WITH A FEW STORMS. THUNDERSTORM MOVEMENT WILL BE EAST AT 35 MPH. THE POTENTIAL FOR SEVERE THUNDERSTORMS WILL DIMINISH SIGNIFICANTLY AFTER MIDNIGHT. A NEARLY STATIONARY FRONTAL BOUNDARY OVER SOUTHEAST MICHIGAN WILL CONTINUE TO FOCUS SHOWER AND THUNDERSTORM ACTIVITY OVER THE REGION TODAY. THIS FRONTAL BOUNDARY WILL FINALLY EXIT THE AREA MONDAY MORNING. .DAY TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THUNDERSTORMS ARE POSSIBLE AGAIN ON TUESDAY...WITH HEAVY RAINFALL ONCE AGAIN POSSIBLE. THESE THUNDERSTORMS WILL RESULT FROM A LOW PRESSURE SYSTEM TRACKING INTO THE AREA ALONG THIS EXISTING FRONT. THERE WILL BE A CHANCE OF THUNDERSTORMS FROM FRIDAY AFTERNOON INTO SUNDAY MORNING AS ANOTHER LOW PRESSURE SYSTEM TRACKS INTO THE GREAT LAKES. .SPOTTER INFORMATION STATEMENT... PLEASE NOTIFY YOUR EMERGENCY MANAGERS IMMEDIATELY. SPOTTER ACTIVATION WILL LIKELY BE NEEDED THIS AFTERNOON AND EVENING. GURNEY
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
804 PM EDT SUN MAY 23 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0715 PM TSTM WND DMG FERNDALE 42.46N 83.13W
05/23/2004 OAKLAND MI TRAINED SPOTTER
NUMEROUS TREES DOWN IN SOUTHEASTERN OAKLAND COUNTY. WINDS
ESTIMATED BY TRAINED SPOTTER OF AT LEAST 60 MPH.
0716 PM TSTM WND DMG ST. CLAIR SHORES 42.49N 82.89W
05/23/2004 MACOMB MI TRAINED SPOTTER
75 MPH WIND...TREE DOWN ON POWER LINES.
0720 PM TSTM WND GST 1 N LENNON 43.00N 83.93W
05/23/2004 65 MPH SHIAWASSEE MI TRAINED SPOTTER
0720 PM TSTM WND GST STERLING HEIGHTS 42.58N 83.03W
05/23/2004 65 MPH MACOMB MI TRAINED SPOTTER
0735 PM TSTM WND GST 2 N UTICA 42.66N 83.02W
05/23/2004 72 MPH MACOMB MI TRAINED SPOTTER
0742 PM TSTM WND GST 2 N UTICA 42.66N 83.02W
05/23/2004 74 MPH MACOMB MI TRAINED SPOTTER
NUMEROUS BRANCHES DOWN. MEASURED AT 22 MILE ROAD AND
SCHOENHERR.
0746 PM TSTM WND GST 7 NW GRAND BLANC 43.00N 83.72W
05/23/2004 0 MPH GENESEE MI TRAINED SPOTTER
UP TO 80 MPH WIND GUSTS ALONG WITH HALF INCH HAIL
REPORTED BY TRAINED SPOTTER.
0746 PM TSTM WND GST 1 N BURTON 43.01N 83.62W
05/23/2004 80 MPH GENESEE MI TRAINED SPOTTER
AT GENESEE AND LAPEER RD.
&&
SHULERPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
813 PM EDT SUN MAY 23 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0742 PM TSTM WND GST 3 N TROY 42.62N 83.14W
05/23/2004 53 MPH OAKLAND MI TRAINED SPOTTER
WIND BURSTS WITH CLOUDS ROTATING AND MOVING EAST RAPIDLY
AT APPROXIMATELY 50 MPH.
&&
SHULERPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
816 PM EDT SUN MAY 23 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0732 PM TSTM WND DMG ALGONAC 42.62N 82.53W
05/23/2004 ST. CLAIR MI LAW ENFORCEMENT
NUMEROUS TREES DOWN...ONE ON A HOUSE.
&&
SHULERPRELIMINARY LOCAL STORM REPORT ... CORRECTION
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
823 PM EDT SUN MAY 23 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0746 PM TSTM WND GST 7 NW GRAND BLANC 43.00N 83.72W
05/23/2004 80 MPH GENESEE MI TRAINED SPOTTER
UP TO 80 MPH WIND GUSTS ALONG WITH HALF INCH HAIL
REPORTED BY TRAINED SPOTTER.
&&
CORRECTED EVENT TO A TSTM WND GST...AND CORRECTED ESTIMATED WIND
SPEED.
SHULERPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
826 PM EDT SUN MAY 23 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0814 PM TSTM WND GST 7 NE LAPEER 43.12N 83.23W
05/23/2004 80 MPH LAPEER MI TRAINED SPOTTER
UP TO 80 MPH WIND GUST ESTIMATED AT FISH LAKE AND DALEY
RD.
&&
SHULERPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
830 PM EDT SUN MAY 23 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0715 PM TSTM WND DMG FRASER 42.54N 82.95W
05/23/2004 MACOMB MI TRAINED SPOTTER
60 MPH WIND GUSTS ESTIMATED...DAMAGE TO VERTICAL AMATEUR
RADIO ANTENNA AND POWER WIRES DOWN THROUGHOUT MACOMB
COUNTY.
&&
SHULER2 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 2004Every state in 2004This 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: 5399915, 5399916.