4 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 Gaylord, MI wrote its last area forecast discussion before the first event at Sep 30, 3:00 PM EST, 3 hours 52 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GAYLORD MI 400 PM EDT TUE SEP 30 2003 .SHORT TERM...STRONG COLD SURFACE LOW CONTINUES TO SPIN NORTH OF MICHIGAN THIS AFTERNOON...WITH GENERAL SURFACE TROUGHING EXTENDING WEST AND SOUTH THROUGHOUT THE GREAT LAKES REGION. LATEST SURFACE ANALYSIS REVEALS SOME LAKE AGGREGATE TROUGHING EMBEDDED WITHIN THE OVERALL SURFACE PRESSURE PATTERN...RESULTING FROM SUFFICIENTLY COLD AIR IN PLACE. 850 MB TEMPS CURRENTLY RANGE FROM -8 C ACROSS ERN UPR MI TO -5C ACROSS SE SECTIONS OF THE CWA. INVERSION HEIGHTS HAVE RISEN TO AROUND 9000 FT IN RESPONSE TO A RATHER STRONG SHORT WAVE ROTATING THRU THE BASE OF THE 500 MB TROUGH THRU NRN MICHIGAN. LAKE ENHANCED RAIN SHOWERS CONTINUE BOTH THROUGHOUT THE CWA AND UPSTREAM ACROSS UPPER MICHIGAN. SHOWERS ARE ALSO DIURNALLY ENHANCED. MAIN FORECAST CONCERNS FOR TONIGHT ARE POPS AND THE POTENTIAL FOR SNOW ACCUMULATION. TONIGHT...SHORT WAVE CURRENTLY MAKING ITS WAY THRU THE CWA WILL EXIT THE REGION EARLY THIS EVENING. ANOTHER VIGOROUS SHORT WAVE WILL SLOWLY DROP SE THRU THE BASE OF THE 500 MB TROUGH INTO THE CWA OVERNIGHT. EXPECT ONLY A BRIEF LULL IN THE ACTION THIS EVENING IN BETWEEN THE TWO SYSTEMS. OVERALL...LIKELY POPS ARE EXPECTED THROUGHOUT THE NIGHT AS INVERSION HEIGHTS RISE WELL ABOVE 20 KFT AND 850 MB TEMPS HOLD AROUND -6 TO -8 C. EXPECT MOST LOCATIONS WILL SEE A MIX OF RAIN AND SNOW...WITH HIGHER ELEVATIONS SEEING THE BEST CHANCE OF SNOW. WITH GROUND STILL RELATIVELY WARM...SIGNIFICANT ACCUMULATION WILL BE HARD TO COME BY. HOWEVER...EXPECT LOCATIONS TARGETED BY W/NW FLOW (ESPECIALLY WITHIN THE HIGHER ELEVATIONS) COULD SEE UP TO 2 INCHES OR SO. EME .LONG TERM...A STORM SYSTEM WILL BE LOCATED EAST OF JAMES BAY WITH A TROUGH MOVING OVER THE STATE IN THE MORNING. SURFACE CYCLONIC FLOW WILL INFLUENCE THE UPPER LAKES REGION IN THE MORNING AND THROUGH THE AFTERNOON. AT UPPER LEVELS A 500MB LOW WILL BE CENTERED OVER NRN LAKE SUPERIOR IN THE MORNING...MOVING EAST OF ONTARIO BY THE EVENING. AN ASSOCIATED STRONG VORT WILL MOVE OVER THE FORECAST AREA IN THE MORNING...EXITING EAST OF THE LAKES REGION BY THE EVENING. STRONG CAA WILL BE EVIDENT OVER THE STATE BEGINNING WEDNESDAY MORNING AND LINGERING INTO THE WEEKEND. 500 MB TEMPERATURES WILL DROP TO AROUND -37C WHILE 850MB TEMPS DROP TO AROUND -8C. LAKE EFFECTS WILL CONTINUE TO BECOME MORE DOMINATE ACROSS THE NRN LAKES TONIGHT. NRN LAKE MICHIGAN WATER TEMPS WILL BE AROUND 14C...WHILE LAKE SUPERIOR WATER TEMPS WILL BE AROUND 10C. THIS WILL GENERATE DELTA TS BETWEEN 18C AND 22C TONIGHT. MODEL SOUNDINGS AND MOISTURE PROGS SHOW GOOD LOW LEVEL MOISTURE TO REMAIN OVER THE FORECAST AREA TONIGHT...AS 900/700 RH LINGERS AROUND 70/80 PERCENT. 1000/850 MB WINDS WILL BE FROM THE NW WITH MODEL SOUNDINGS SHOWING INVERSION HEIGHTS AROUND 9K FT...WITH THE DEPTH OF THE SURFACE BASED COLD AIR TO REMAIN BTW 1000 AND 1400 FEET. OVERALL WILL MENTION A MIX OF RAIN/SNOW TONIGHT...AND WILL ONLY MENTION SOME HIGHER ELEVATION SNOW ACCUMULATIONS AS GROUND TEMPS REMAIN IN THE 40S AND LOWER 50S. WILL ISSUE A FREEZE WARNING TONIGHT AS STRONG CAA OVERNIGHT HELPS LOWS DROP INTO THE LOWER 30S MOST ZONES. WEDNESDAY NIGHT...SURFACE AND UPPER LEVEL CYCLONIC FLOW WILL LINGER OVER THE NRN LAKES THROUGH THE EVENING BEFORE DIMINISHING DURING THE OVERNIGHT...AS THE SURFACE AND UPPER LOWS MOVE TOWARD THE NORTHEAST ATLANTIC. LAKE EFFECTS WILL CONTINUE TO BE A CONCERN AS 850MB TEMPS WILL BE AROUND -8C GENERATING DELTA TS BETWEEN 18C AND 22C...900/700 RH WILL BE AROUND 80 PERCENT...1000/850 WINDS WILL BE FROM THE NORTHWEST AND MODEL SOUNDINGS SHOW INVERSIONS REMAINING AROUND 9K FT. ADDITIONAL SUPPORT FOR PCPN THROUGH THE OVERNIGHT HOURS WILL BE LINGERING UPPER LEVEL CYCLONIC FLOW...AS THE 500 MB LOWS CONTINUES TO MOVE EASTWARD FORM THE UPPER LAKES. AGAIN WILL NOT MENTION EXTREMELY HIGH SNOWFALL ACCUMULATIONS WEDNESDAY NIGHT...BUT 2 TO 3 INCHES IN HIGHER ELEVATIONS IN LAKE AREAS IS IN LINE. THURSDAY THROUGH TUESDAY...EXTENDED MODELS IN SIMILAR AGREEMENT WITH THE UPCOMING WEEKEND HAVING BLOW NORMAL TEMPERATURES AND A CHANCE OF MIXED RAIN AND SNOW INTO EARLY NEXT WEEK. BOARD UPPER TROUGHING WILL MOVE OVER THE NRN LAKES REGION THURSDAY NIGHT AND FRIDAY AND LINGER OVER THE UPPER LAKES REGION INTO MONDAY. 850 MB TEMPERATURES WILL CONTINUE TO COOL THROUGH THE WEEKEND COOLING FROM AROUND -0C THURSDAY TO AROUND -6C/-7C BY SUNDAY AND MONDAY. ALSO THE 500MB COLD POOL WILL MOVE OVER THE UPPER LAKES SATURDAY AND SUNDAY AS 500 MB TEMPERATURES DROP TO BETWEEN -27C AND -31C. AT THE SURFACE A STORM SYSTEM WILL MOVE OVER WESTERN ONTARIO FRIDAY...MOVING EAST TO JAMES BAY/EASTERN HUDSON BAY SATURDAY NIGHT AND SUNDAY. THEREFORE SURFACE AND UPPER LEVEL CYCLONIC FLOW WILL INFLUENCE THE ENTIRE UPPER LAKES REGION FRIDAY NIGHT AND INTO MONDAY. THIS WILL KEEP A CHANCE OF PCPN IN THE FORECAST THIS WEEKEND...MIXING WITH SNOW OVER EAST UPPER AND EXTREME NRN LOWER MICHIGAN AS THE COLDEST AIR OF THE SEASON PUSHES SOUTH. WILL LEAVE THE REGION DRY TUESDAY AS THE COLDEST AIR PASSES EAST OF THE LAKES...AND SURFACE AND UPPER RIDGING PUSHES EAST OVER THE WESTERN LAKES REGION. && .APX WATCHES/WARNINGS/ADVISORIES...FREEZE WARNING TONIGHT FOR NORTHEAST AND NORTH CENTRAL LOWER MICHIGAN. SWR
MIZ008-015>036-041-042-011100- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GAYLORD MI 500 PM EDT TUE SEP 30 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN LOWER AND EASTERN UPPER MICHIGAN. .DAY ONE...TONIGHT OVERNIGHT TEMPERATURES WILL FALL INTO THE LOWER 30S OVER MUCH OF NORTHERN MICHIGAN...AS COLD AIR RUSHES IN FROM CENTRAL CANADA. THEREFORE A FREEZE WARNING HAS BEEN ISSUED FOR MUCH OF NORTHERN LOWER MICHIGAN...SEE EXISTING WARNINGS FOR FURTHER DETAILS. WATERSPOUTS ARE POSSIBLE TONIGHT ACROSS THE U.S WATERS OF WHITEFISH BAY...THE STRAITS OF MACKINAC AND ACROSS NORTHERN LAKE MICHIGAN INCLUDING GRAND TRAVERSE BAY. MIXED SNOW SHOWERS AND SLEET WILL AFFECT INLAND LOCATIONS OF NORTHERN LOWER MICHIGAN. SNOW MAY ACCUMULATE AROUND ONE INCH ACROSS HIGHER INLAND TERRAIN. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY WATERSPOUTS ARE POSSIBLE WEDNESDAY ON NEARSHORE WATERS AROUND NORTHERN MICHIGAN. SNOW SHOWERS MAY ACCUMULATE AROUND AN INCH OR TWO ACROSS THE HIGHEST INLAND TERRAIN OF EASTERN UPPER AND NORTHWEST LOWER MICHIGAN WEDNESDAY. ACCUMULATING SNOW SHOWERS ARE ALSO POSSIBLE ACROSS INTERIOR SECTIONS OF EASTERN UPPER AND NORTHWEST LOWER MICHIGAN WEDNESDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. && MORE INFORMATION MAY BE OBTAINED AT THE FOLLOWING URL: HTTP://WWW.CRH.NOAA.GOV/APX (ALL LOWER CASE) SWR
4 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 2003Every state in 2003This 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: 5337768, 5337769, 5337770, 5337771.