Marine Thunderstorm Wind, Lake St Clair (U.S. Portion)
- When
- September 10, 6:01 PM EST
- Where
- Lake St Clair (U.S. Portion) marine zone, 20 mi SW of Grosse Pointe
- Measured
- 38 kt (44 mph)
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 42.067, -83.217
Marine Thunderstorm Wind in Lake St. Clair, September 10, 2002
1 marine thunderstorm wind, as filed by the National Weather Service.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
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.
What forecasters said that day
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 Sep 10, 2:42 PM EST, 3 hours 19 minutes earlier.
Area forecast discussion, Sep 10, 2:42 PM EST, 3 hours 19 minutes before
SOUTHEAST MICHIGAN AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 340 AM EDT TUE SEP 10 2002 CONVECTIVE POTENTIAL WILL BE THE FIRST CONCERN FOR THIS FORECAST FOLLOWED BY DETAILS ON A DRAMATIC COOLING TREND FOR TOMORROW AND THURSDAY. NO ADDITIONAL PRECIPITATION IS EXPECTED UNTIL THIS WEEKEND WHEN THE NEXT FRONTAL SYSTEM MOVES INTO SE MICHIGAN. SATELLITE AND RADAR TRENDS SHOW CONVECTION TRYING TO BREAK LOOSE FROM NE TO SW ALONG THE PREFRONTAL TROF AS MORE AND MORE OF THE LINE BREAKS THROUGH A MODEST LOW LEVEL CAP. FORECAST SOUNDINGS MODIFIED FOR 90/68 SHOW CAPE AROUND 2800 J/KG BUT WITH A WEAK HODOGRAPH. WITHOUT A GOOD WIND FIELD IT WILL BE DIFFICULT TO GET ANY ORGANIZED CONVECTION, BUT THE RELATIVELY HIGH CAPE ENVIRONMENT AND DEEP MID LEVEL MOISTURE (PW=1.7,KINX=38 AT 00Z) WILL MAKE PRECIP LOADED WIND GUSTS A CONCERN. CONTRIBUTING TO THAT WILL BE RELATIVELY WIDE T/TD SPREADS BELOW CLOUD BASE. PLAN TO CONTINUE WITH SCATTERED COVERAGE BUT TREND TOWARD NUMEROUS COVERAGE AS POST FRONTAL SHOWERS WORK INTO THE AREA. SUPPORT FOR THIS INCLUDES A BEEFED UP MODEL QPF OVER THE LAST COUPLE OF RUNS, WHICH SEEMS JUSTIFIED AS UPPER SUPPORT ARRIVES IN THE FORM OF QVECTOR CONVERGENCE AND 850 TO 700 MB LAYER FGEN. PRECIP WILL BE OUT OF SE MICHIGAN BY MIDNIGHT WITH CLOUDS AND COOLER TEMPS THE ONLY CONCERN FOR OVERNIGHT AND WEDNESDAY. AFTER A PERIOD OF PARTLY CLOUDY SKIES OVERNIGHT, COLD AIR INSTABILITY CU WILL BE AUGMENTED BY LAKE CLOUDS OVER SE MICHIGAN WITH A MAINLY NORTH WIND FLOW DURING WEDNESDAY. AFTERNOON TEMPS OVER MN AND WI SUPPORT GUIDANCE TEMPS IN THE LOWER 70S, ESPECIALLY WITHOUT FULL SUN. CLEAR SKIES WILL BE COUNTERED BY A STEADY NORTH WIND WEDNESDAY NIGHT WHICH WILL KEEP TEMPS FROM REALLY DROPPING OFF A LOT. THE BEST COOLING NIGHT LOOKS TO BE THURSDAY NIGHT AS HIGH PRESSURE SETTLES OVER THE AREA AND ALLOWS LOW TEMPS TO RADIATE A LITTLE FARTHER INTO THE UPPER 40S AT MOST LOCATIONS. WITH HIGH PRESSURE IN CONTROL, EXPECT CLEAR CONDITIONS THURSDAY AND THURSDAY NIGHT. HIGH CLOUDS WILL BE ON THE INCREASE ON FRIDAY AS RETURN FLOW AND MID LEVEL WARM ADVECTION SETS UP IN THE PLAINS. THE SYSTEM FOR SATURDAY IS A LITTLE SLOWER ON THE LATEST RUNS OF THE AVN/MRF BUT STILL LOOKS ON TARGET FOR SATURDAY AND SATURDAY NIGHT. THE AVN NOW SHOWS THE SYSTEM NEAR THE FOUR CORNERS REGION GETTING ABSORBED INTO THE WESTERLIES AND BRINGING SOME GULF MOISTURE ALONG WITH IT. THIS WILL OCCUR AS THE CENTRAL CANADIAN WAVE MOVES INTO THE PLAINS AND STARTS TO CARVE OUT THE TROF OVER THE CENTRAL U.S. THIS TROF IS FORECAST BY THE MODELS TO BE PROGRESSIVE ENOUGH THAT WE MAY BE ABLE TO TAKE THE CHANCE OF RAIN OUT OF THE FORECAST FOR SUNDAY IF THE TREND HOLDS FOR ONE MORE RUN. THE BEGINNING OF NEXT WEEK LOOKS DRY WITH TEMPS AROUND NORMAL, EVEN IF THE FRONT VERIFIES A LITTLE SLOWER ON SUNDAY. .DTX...NONE. BT
In the hours before
Local storm report, Sep 10, 4:08 PM EST, 1 hour 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
508 PM EDT TUE SEP 10 2002
TIME(EDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0455 PM OWENDALE MI WIND DAMAGE
09/10/02 HURON TREES AND POWER LINES DOWN
ACROSS ROAD REPORTED BY
EMERGENCY MANAGER
JHBLocal storm report, Sep 10, 4:30 PM EST, 1 hour 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
530 PM EDT TUE SEP 10 2002
TIME(EDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0515 PM 3 W PERRY MI WIND DAMAGE
09/10/02 SHIAWASSEE 3 LARGE TREES DOWN AND
PATIO FURNITURE BLOWN AWAY
REPORTED BY WEATHER SPOTTER
JHBSpecial weather statement, Sep 10, 4:51 PM EST, 1 hour 10 minutes before
MIZ054-055-061>063-068>070-075-076-082-083-110200- HAZARDOUS WEATHER OUTLOOK FOR SOUTHEAST MICHIGAN NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 551 PM EDT TUE SEP 10 2002 ...SEVERE THUNDERSTORM WATCH 680 IN EFFECT UNTIL 10 PM EDT FOR MOST OF SOUTHEAST MICHIGAN... DISPATCHERS...PLEASE NOTIFY YOUR EMERGENCY MANAGERS IMMEDIATELY. HAZARD... SCATTERED THUNDERSTORMS WILL CONTINUE THIS EVENING IN ADVANCE OF A COLD FRONT. SOME OF THESE STORMS MAY PRODUCE WIND GUSTS IN EXCESS OF 60 MPH...ALONG WITH BRIEFLY HEAVY RAINFALL AND FREQUENT LIGHTNING. THE SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THE FOLLOWING COUNTIES... SANILAC...LAPEER...GENESEE...MACOMB...OAKLAND...LIVINGSTON... WASHTENAW...LENAWEE...TUSCOLA...ST. CLAIR...WAYNE AND MONROE. SOME COMMUNITIES IN THE WATCH AREA ARE FLINT...CARO...LAPEER... PONTIAC...ANN ARBOR...DETROIT...PORT HURON...ADRIAN AND MONROE. DISCUSSION... A STRONG COLD FRONT WILL MOVE THROUGH SOUTHEAST LOWER MICHIGAN THIS EVENING. SCATTERED THUNDERSTORMS WILL CONTINUE THIS EVENING...AND BE ENDED BY MIDNIGHT. THUNDERSTORM MOVEMENT WILL BE TO THE EAST AT 35 MPH. SPOTTER ACTIVATION... SPOTTER ACTIVATION HAS OCCURRED. DWD
Local storm report, Sep 10, 4:54 PM EST, 1 hour 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
554 PM EDT TUE SEP 10 2002
TIME(EDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0457 PM LAINGSBURG MI WIND DAMAGE
09/10/02 SHIAWASSEE 2 FOOT DIAMETER TREES DOWN
JHBThe radar
The Detroit radar (KDTX), 73 km away, was scanning. The volume nearest the first event began at 23:02 UTC.
Event by event
1 marine thunderstorm wind. Local standard time, as filed.
What these are
- Marine Thunderstorm Wind
- Thunderstorm winds of 34 knots or more over coastal or lake waters.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Damaging Winds and Lightning Strike in Michigan, September 10, 2002
- Tropical Storm in North Carolina, September 10, 2002
- Damaging Winds in Michigan, September 10, 2002
- Flash Flood and Hail in Arizona, September 10, 2002
- Hail and Damaging Wind in Arizona, September 10, 2002
- Damaging Winds in New York, September 10, 2002
- Marine Thunderstorm Winds in Lake Huron, September 10, 2002
- Extreme Cold in Oregon, September 10 to 11, 2002
- Damaging Winds in Michigan, September 10, 2002
- Marine Thunderstorm Winds in Lake Huron, September 10, 2002
- Extreme Cold in California, September 10 to 11, 2002
- Marine Thunderstorm Winds in Gulf of Mexico, September 10, 2002
More
Every storm in Lake St. Clair in 2002Every state in 2002This day in weather history
Sources
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 2026-09-30. Each event’s entry at NCEI: 5317575.