Instability ahead of a cold front was responsible for a single severe thunderstorm on this date.
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 episode as NWS MPX wrote it up.
Instability ahead of a cold front was responsible for a single severe thunderstorm on this date.
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 Twin Cities, MN wrote its last area forecast discussion before the first event at Sep 23, 1:24 PM CST, 2 hours 16 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 224 PM CDT TUE SEP 23 2008 .DISCUSSION... FORECAST CONCERN NEAR TERM...IS CONVECTION ACROSS MUCH OF EASTERN CWA THIS EVENING. SPC MESOANALYSIS SHOWING SOME MODERATE SEVERE WEATHER PARAMETERS ACROSS THE AREA. MLCAPE INCREASING 500-1000 J/KG ALONG/AHEAD OF SFC BNDRY OVR CNTRL MN. DEEPER SHEAR STILL LAGGING BEHIND BNDRY OVR WRN MN BUT SHOULD GRADUALLY MOVE EAST DURING THE EVENING...AS RATHER VIGOROUS TROUGH MOVES EAST ACROSS THE DAKOTAS AND OVER MN. COULD SEE A NARROW WINDOW OF ISOLATED SEVERE STORMS WITH HAIL/STRONG WIND GUSTS LATE AFTERNOON INTO EARLY EVENING ACROSS EASTERN MN/WC WI. SIGNIFICANT WEATHER SHOULD TAPER OFF AFTER BY 03Z/AFTER SUNSET. VARIOUS NMM-WRF/LAPSWRF REFLECTIVITY FCSTS FOR THE EVENING SHOW LINE OF CONVECTION MOVING THROUGH AREA...WITH SOME WRAPAROUND SHRA/TSRA OVER THE NORTHWEST CWA DURING THE LATE EVENING. OTHERWISE...ACTIVITY SHOULD WANE AFTER MIDNIGHT. UPPER TROUGH EXITS THE AREA FOR WED AND WED NIGHT WITH DRIER AIR RETURNING. THEN RETURN FLOW/LLJ AND SOME HIGHER MOISTURE MOVES NORTH LATER THURSDAY NIGHT...WITH THE POTENTIAL OF SOME ELEVATED CONVECTION LATE WED NIGHT INTO THU MORNING...MAINLY OVER THE WESTERN CWA. HELD ONTO SLGT CHC POPS FOR THIS. MODELS TRENDING NEXT COLD FRONT ACROSS THE CWA LATER FRIDAY/FRI NIGHT INTO SATURDAY. 12Z GFS IS A LITTLE FASTER WITH THIS SHORT WAVE...WHILE THE 12Z ECMWF IS MORE CONSISTENT...HOLDING ONTO SOME LIGHT QPF FAR EAST YET INTO SATURDAY. WILL FOLLOW THIS FOR NOW. OTHERWISE...MODELS AMPLIFY WESTERN RIDGE AND ALLOWS ANOTHER VIGOROUS UPPER LEVEL LOW TO DROP SOUTHEAST TOWARD THE GREAT LAKES MONDAY/MONDAY NIGHT PERIOD. APPEARS EACH MODEL RUN IS STRONGER/DEEPER WITH THIS FEATURE. WILL HOLD ONTO SOME SMALL CHANCE POPS FOR THIS WEATHER FEATURE. UPPER PATTER REMAINS PROGRESSIVE...SO ANY SIGNIFICANT COOLING SHOULD BE SHORT LIVED THROUGH THE LONGER TERM. && .AVIATION... /18Z TAF ISSUANCE/ ALOT OF THE TAF FORECASTS HINGED ON THE COLD FRONT AND THE AMOUNT OF INSTABLITY AHEAD OF IT. COLD FRONT HAD MOVED INTO NORTHWEST MN...AND SHOULD MOVE THROUGH WESTERN WISCONSIN BY MIDNIGHT TONIGHT. MODERATE TO STRONG THUNDERSTORMS ARE EXPECTED TO REDVELOP AHEAD OF THE FRONT THIS AFTERNOON AND EVENING. WEATHER CONDS ARE EXPECTED TO LOWER TO MARGINAL VFR CONDS IN THUNDERSTORMS OR NEAR THE VICINITY OF THUNDERSTORMS. AREAS OF LIGHT RAIN/SCATTERED SHOWERS IN THE WAKE OF THE FRONT FOR A FEW HOURS THEN CLEARING. EXCELLENT FLYING CONDS ARE ANTICIPATE FOR WEDNESDAY AS A DRY WESTERLY AIRFLOW PREVAILS OVER THE TAF SITES. && .MPX WATCHES/WARNINGS/ADVISORIES... MN...NONE. WI...NONE. && DWE/JVM
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 247 PM CDT TUE SEP 23 2008 MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028- 241200- DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS- BENTON-SHERBURNE-ISANTI-CHISAGO-LAC QUI PARLE-SWIFT-CHIPPEWA- KANDIYOHI-MEEKER-WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON- YELLOW MEDICINE-RENVILLE-MCLEOD-SIBLEY-CARVER-SCOTT-DAKOTA- REDWOOD-BROWN-NICOLLET-LE SUEUR-RICE-GOODHUE-WATONWAN-BLUE EARTH- WASECA-STEELE-MARTIN-FARIBAULT-FREEBORN-POLK-BARRON-RUSK- ST. CROIX-PIERCE-DUNN-PEPIN-EAU CLAIRE- 247 PM CDT TUE SEP 23 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND SOUTHERN MINNESOTA...AND WEST CENTRAL WISCONSIN. .DAY ONE...REST OF THIS AFTERNOON AND TONIGHT SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP ALONG A COLD FRONT MOVING ACROSS EASTERN MINNESOTA AND WESTERN WISCONSIN THROUGH THE EVENING. ISOLATED SEVERE STORMS ARE POSSIBLE...WITH THE MAIN THREAT BEING LARGE HAIL AND STRONG WINDS. BRIEF VERY HEAVY RAIN WILL ACCOMPANY THE STRONGER STORMS AS WELL. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THERE IS A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS LATE WEDNESDAY NIGHT INTO THURSDAY MORNING ACROSS MOST OF THE AREA... AND THEN FROM CENTRAL MINNESOTA INTO WISCONSIN FRIDAY NIGHT AND SATURDAY. SEVERE WEATHER IS NOT ANTICIPATED. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON INTO THE EVENING.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 324 PM CDT TUE SEP 23 2008 MNZ067>069-075-076-232130- CARVER-LE SUEUR-NICOLLET-SCOTT-SIBLEY- 324 PM CDT TUE SEP 23 2008 ...SIGNIFICANT WEATHER ALERT FOR CARVER...LE SUEUR...NICOLLET...SCOTT AND SIBLEY COUNTIES UNTIL 430 PM CDT... AT 320 PM CDT...WEATHER SERVICE RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 3 MILES SOUTHWEST OF GAYLORD TO 3 MILES SOUTHWEST OF NICOLLET. THESE STORMS WERE MOVING NORTHEAST AT 42 MPH. PEA SIZE HAIL AND WINDS UP TO 50 MPH ARE EXPECTED WITH THESE STORMS. ADDITIONAL STRONG STORMS WERE MOVING NORTHEASTWARD ACROSS NORTHERN SIBLEY AND WESTERN CARVER COUNTIES FROM WATERTOWN TO MAYER TO NORWOOD/YOUNG AMERICA AT 320 PM CDT. HEAVY DOWNPOURS AND WIND GUSTS TO 45 MPH WILL BE POSSIBLE AS THESE STORMS MOVE NORTHEAST. * LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE... GAYLORD. NEW ROME. RUSH RIVER. OTTAWA. LE SUEUR. ST THOMAS. STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR YOUR LOCAL TELEVISION STATIONS FOR LATER STATEMENTS AND POSSIBLE WARNINGS CONCERNING THIS WEATHER SITUATION. MDB
The Minneapolis radar (KMPX), 87 km away, was scanning. The volume nearest the first event began at 21:41 UTC.
1 thunderstorm wind. Local standard time, as filed.
A trained spotter reported two twelve to eighteen inch diameter trees downed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Minnesota in 2008Every state in 2008This day in weather historyWarnings in Minnesota, September 2008
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: 134690.