Stratiform rain caused strong winds to reach the surface in two known locations, one being near Junction City, Kansas, and the other being near Rantoul, Kansas. These weakly convecting showers caused strong winds which caused damage in these two locations, highlighted by power poles and lines down near Junction City and a barn being blown down near Rantoul.
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 TOP wrote it up.
Stratiform rain caused strong winds to reach the surface in two known locations, one being near Junction City, Kansas, and the other being near Rantoul, Kansas. These weakly convecting showers caused strong winds which caused damage in these two locations, highlighted by power poles and lines down near Junction City and a barn being blown down near Rantoul.
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 Topeka, KS wrote its last area forecast discussion before the first event at Sep 4, 5:40 PM CST, 3 hours 45 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TOPEKA KS 640 PM CDT TUE SEP 4 2012 ...UPDATE TO AVIATION... .DISCUSSION... SHORT TERM FORECAST (TONIGHT AND WEDNESDAY)... STRONG BOUNDARY LAYER HEATING HAS ONCE AGAIN BROUGHT TEMPERATURES UP TO THE MIDDLE 90S ACROSS MUCH OF THE AREA. MAKING CONDITIONS FEEL EVEN WORSE IS A MOIST BOUNDARY LAYER...WHICH HAS ALLOWED HEAT INDICES TO RISE INTO THE LOWER 100S. AS OF THIS MORNING A STATIONARY BOUNDARY WAS LOCATED ACROSS FAR SOUTHERN KANSAS...AND THIS BOUNDARY SERVED AS THE FOCUS FOR MORNING AND AFTERNOON SHOWERS ACROSS THAT AREA. THESE SHOWERS WILL CONTINUE THROUGH THE AFTERNOON BUT WILL LIKELY REMAIN TO THE SOUTH OF THE FORECAST AREA. OVERNIGHT TONIGHT TWO AREAS OF PRECIPITATION BECOME THE FOCUS OF THE FORECAST. THE FIRST AREA WILL BE ACROSS SOUTHWESTERN AND CENTRAL KANSAS...WHERE SOUTHWESTERLY WINDS AT 850 MB WILL PICK UP IN RESPONSE TO A WEAK 850 MB TROUGH OVER THE HIGH PLAINS. EXPECT SHOWERS TO BEGIN AS WARM/MOIST AIR ADVECTS INTO SW KANSAS. PERHAPS THE FAR WESTERN ZONES COULD SEE A FEW SHOWERS IN ASSOCIATION WITH THESE WARM AIR ADVECTION SHOWERS OVERNIGHT. THE OTHER AREA OF PRECIP WILL BE ACROSS E/SE NEBRASKA. SHORT RANGE MODELS INDICATE THAT A PROGRESSIVE SHORTWAVE TROUGH WILL DIG SLIGHTLY TO THE S/SE THROUGH THE NORTHERN PLAINS...KICKING OFF A ROUND OF SHOWERS AND THUNDERSTORMS. THE BEST ASCENT FROM THIS WAVE SHOULD REMAIN TO THE NORTH AND EAST OF THE FORECAST AREA...BUT WILL NOT RULE OUT A FEW SHOWERS ACROSS THE FAR NORTHEASTERN PORTION OF THE CWA. GIVEN THE PROGRESSIVE NATURE OF THE TROUGH EXPECT RAIN CHANCES TO COME TO AN END ACROSS THE NORTHWESTERN TWO-THIRDS OF THE CWA AFTER THIS TROUGH PASSES THROUGH. WILL KEEP SCHC POPS FOR THE FAR SOUTHERN PORTION OF THE CWA FOR MID MORNING SHOWERS SOUTHEAST OF INTERSTATE 35. FOR WEDNESDAY SURFACE HIGH WILL GLIDE ACROSS THE NORTHERN/CENTRAL PLAINS...WHICH WILL DRAG A COLD FRONT THROUGH THE AREA ON WEDNESDAY. THIS COLD FRONT WILL LIKELY SPELL THE END OF THE RECENT UNSEASONABLY WARM WEATHER...AT LEAST FOR PORTIONS OF KANSAS THAT ARE NORTH OF INTERSTATE 70 AND WEST OF INTERSTATE 35. ONE MORE WARM DAY OF 90 PLUS DEGREE TEMPERATURES MAY BE IN STORE FOR AREAS SOUTH OF INTERSTATE 35. JL MID TERM FORECAST (WEDNESDAY NIGHT THROUGH FRIDAY)... AMPLIFIED UPPER AIR PATTERN PERSISTS TOWARDS THE END OF THE WORK WEEK. LATEST MODEL GUIDANCE CONTINUES TO CLEAR THE COLD FRONT ALONG WITH CONVECTION TO THE SOUTH OF THE CWA BY WEDNESDAY EVENING. THEREFORE DECIDED TO REMOVE POPS UNTIL 12Z THUR. CAA QUICKLY FILTERS SOUTHWARD WITH OVERNIGHT LOWS GENERALLY IN THE UPPER 50S TO NEAR 60. BY THURSDAY AFTERNOON ANOTHER MORE PROGRESSIVE SHORTWAVE TROUGH AND COLD FRONT DIVES SOUTHWARD INTO THE NORTHERN PLAINS. MODELS ARE SIMILAR IN DEVELOPING A SFC TROUGH OVER NEBRASKA...HELPING TO PULL WARM MOIST AIR INTO THE CWA. SLIGHT CHCS FOR PRECIP WERE INSERTED AHEAD OF THE FRONT TOWARD NORTH CENTRAL KANSAS BY LATE AFTERNOON AND EARLY EVENING IN PROXIMITY TO THE UPPER LVL FORCING. HOWEVER CHANCES FOR PRECIP ARE RAISED TO LIKELY BY THURSDAY EVENING INTO FRIDAY AS THE TROUGH DEEPENS AND A STRONG COLD FRONT DIVES SOUTHEAST. WHILE MOISTURE VALUES DO NOT APPEAR TO BE VERY IMPRESSIVE...STRONG CONVERGENCE WILL ALLOW FOR SCATTERED CONVECTION ALONG AND BEHIND THE BOUNDARY. CLOUD COVER AND MUCH COOLER CANADIAN AIR QUICKLY FILTERS SOUTHWARD...COOLING HIGHS FRIDAY INTO THE UPPER 70S. BOWEN EXTENDED TERM FORECAST (FRIDAY NIGHT THROUGH TUESDAY)... FRIDAY NIGHT...AN AMPLIFIED H5 TROUGH WILL DIG SOUTHEAST ACROSS EASTERN KS...IA...AND THE UPPER GREAT LAKES STATES. AS THE STRONGER ASCENT SHIFTS EAST THE RAIN AND THUNDERSTORMS WILL MOVE SOUTHEAST OF THE CWA. THE GFS IS A BIT MORE PROGRESSIVE THAN THE ECMWF...AND SHOWS ALL THE PRECIP SOUTHEAST OF THE CWA AFTER 6Z SATURDAY. SATURDAY AND SUNDAY...THE H5 TROUGH WILL CONTINUE TO DIG SOUTHEAST ACROSS THE EASTERN CONUS AND AMPLIFY. LOW-LEVEL CAA ACROSS THE NORTHERN AND CENTRAL PLAINS WILL CAUSE A SFC RIDGE TO BUILD SOUTHWARD ACROSS EASTERN KS LATE SATURDAY INTO SUNDAY. STRONGER NORTHERLY SURFACE WINDS WILL ADVECT A COOLER AIR-MASS SOUTHWARD ACROSS THE REGION SATURDAY. CLOUD COVER WILL CLEAR THROUGH THE MORNING HOURS OF SATURDAY AND EVEN WITH INSOLATION DURING THE AFTERNOON HOUR OF SATURDAY...HIGH TEMPERATURES ON SATURDAY SHOULD ONLY REACH THE MID 70S. LIGHT WINDS ON SUNDAY WITH THE SFC RIDGE AXIS ACROSS THE CWA WILL RESULT IN SLIGHTLY WARMER TEMPERATURES...WITH HIGHS ON SUNDAY IN THE MID TO UPPER 70S. MONDAY AND TUESDAY...A BROAD UPPER LEVEL RIDGE WILL BUILD EASTWARD INTO THE SOUTHERN PLAINS. THE SURFACE RIDGE WILL SHIFT EASTWARD INTO THE MID AND LOWER MS RIVER VALLEY. SOUTHERLY SURFACE WINDS WILL HELP HIGH TEMPERATURES TO WARM INTO THE LOWER TO MID 80S ON MONDAY...AND HIGHS WILL BE WARMER TUESDAY WITH MID TO UPPER 80S. EXPECT DRY CONDITIONS THROUGH TUESDAY. GARGAN && .AVIATION... SCATTERED THUNDERSTORMS WILL CONTINUE TO MOVE EAST ACROSS NORTH CENTRAL KANSAS AND MAY BEGIN TO AFFECT THE MHK TERMINAL BETWEEN 01Z-02Z. EXPECTING VFR CIGS BUT MAY SEE SOME MVFR VSBYS WITH THE STRONGER STORMS. HAVE INSERTED A VCTS FOR NOW AND WILL MONITOR. THINK STORMS MAY DIE OFF BEFORE REACHING TOP AND FOE SO HAVE LEFT OUT TSRA FOR NOW. A FRONT WILL MOVE THROUGH THE TERMINALS BETWEEN 11Z-14Z WEDNESDAY. WINDS WILL SHIFT TO THE WEST THEN NORTH AROUND 10 KTS. 53 && .TOP WATCHES/WARNINGS/ADVISORIES... NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TOPEKA KS 339 PM CDT TUE SEP 4 2012 KSZ008>012-020>024-026-034>040-054>056-058-059-052045- REPUBLIC-WASHINGTON-MARSHALL-NEMAHA-BROWN-CLOUD-CLAY-RILEY- POTTAWATOMIE-JACKSON-JEFFERSON-OTTAWA-DICKINSON-GEARY-MORRIS- WABAUNSEE-SHAWNEE-DOUGLAS-LYON-OSAGE-FRANKLIN-COFFEY-ANDERSON- 339 PM CDT TUE SEP 4 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL...NORTH CENTRAL AND NORTHEAST KANSAS. .DAY ONE...THIS AFTERNOON AND TONIGHT. HEAT INDICES OF 100 TO 103 DEGREES CAN BE EXPECTED ACROSS NORTHEAST AND EAST CENTRAL KANSAS LATE THIS AFTERNOON. THERE IS A SLIGHT CHANCE FOR THUNDERSTORMS LATE THIS AFTERNOON IN PORTIONS OF NORTH CENTRAL KANSAS...THEN A CHANCE FOR THUNDERSTORMS ACROSS THE ENTIRE AREA OVERNIGHT. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. THERE IS A SLIGHT CHANCE FOR THUNDERSTORMS IN THE EAST CENTRAL KANSAS ON WEDNESDAY. A MUCH BETTER CHANCE FOR THUNDERSTORMS WILL EXIST ACROSS THE AREA LATE THURSDAY INTO FRIDAY WITH THE PASSAGE OF A STRONG COLD FRONT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED THROUGH TONIGHT.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
502 PM CDT TUE SEP 04 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1036 PM TSTM WND DMG 4 N DENISON 39.45N 95.63W
09/03/2012 JACKSON KS PUBLIC
12 INCH LIMB REPORTED BLOWN DOWN FROM LIVE TREE.
&&
BYRNESPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TOPEKA KS 700 PM CDT TUE SEP 4 2012 KSZ008-020-050030- CLOUD-REPUBLIC- 700 PM CDT TUE SEP 4 2012 ...SIGNIFICANT WEATHER ADVISORY FOR WESTERN REPUBLIC AND NORTHWESTERN CLOUD COUNTIES... THROUGH 730 PM CDT...A LINE OF STRONG THUNDERSTORMS WILL MOVE EAST AT 15 MPH ACROSS PORTIONS OF WESTERN REPUBLIC AND NORTHWESTERN CLOUD COUNTIES. NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THESE STORMS ARE CAPABLE OF PRODUCING PENNY SIZE HAIL...STRONG WINDS AROUND 50 MPH...HEAVY RAIN AND FREQUENT LIGHTNING. SOME LOCATIONS THAT COULD BE AFFECTED INCLUDE REPUBLIC...JAMESTOWN...SCANDIA...NORWAY AND BELLEVILLE. STAY ALERT TO THE WEATHER IN CASE A WARNING IS ISSUED. && LAT...LON 4001 9756 3948 9773 3947 9794 4000 9794 TIME...MOT...LOC 2359Z 265DEG 13KT 3998 9784 3955 9798
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TOPEKA KS 726 PM CDT TUE SEP 4 2012 KSZ008-020-034-050100- CLOUD-OTTAWA-REPUBLIC- 726 PM CDT TUE SEP 4 2012 ...SIGNIFICANT WEATHER ADVISORY FOR REPUBLIC...OTTAWA AND CLOUD COUNTIES... THROUGH 800 PM CDT...A LINE OF THUNDERSTORMS WILL MOVE EAST AT 35 MPH ACROSS PORTIONS OF REPUBLIC...OTTAWA AND CLOUD COUNTIES. NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THESE STORMS ARE CAPABLE OF PRODUCING PEA SIZE HAIL...STRONG WINDS OF 40 TO 50 MPH AND HEAVY RAIN. SOME LOCATIONS THAT COULD BE AFFECTED INCLUDE MUNDEN... CULVER...MINNEAPOLIS...CUBA...NARKA...AURORA...AGENDA...BENNINGTON... WELLS...CLYDE...MILTONVALE AND NILES. STAY ALERT TO THE WEATHER IN CASE A WARNING IS ISSUED. && LAT...LON 4000 9737 3896 9738 3896 9794 4000 9793 TIME...MOT...LOC 0027Z 276DEG 31KT 3992 9761 3897 9785
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TOPEKA KS 748 PM CDT TUE SEP 4 2012 KSZ009-021-035-050115- CLAY-DICKINSON-WASHINGTON- 748 PM CDT TUE SEP 4 2012 ...SIGNIFICANT WEATHER ADVISORY FOR CLAY...DICKINSON AND WASHINGTON COUNTIES... THROUGH 815 PM CDT...A LINE SHOWERS AND THUNDERSTORMS WILL MOVE EAST AT 45 MPH ACROSS MUCH OF CLAY...DICKINSON AND WASHINGTON COUNTIES. NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THESE STORMS ARE CAPABLE OF PRODUCING STRONG WINDS IN EXCESS OF 50 MPH...AND MAY OCCUR WELL BEFORE THUNDER IS HEARD. SOME LOCATIONS THAT COULD BE AFFECTED INCLUDE ABILENE...CLAY CENTER... LINN...ENTERPRISE...WASHINGTON...WAKEFIELD...AND CHAPMAN. MOTORISTS ALONG INTERSTATE 70 BETWEEN MILE MARKERS 268 AND 289 COULD ALSO BE AFFECTED. STAY ALERT TO THE WEATHER IN CASE A WARNING IS ISSUED. && LAT...LON 3988 9693 3874 9698 3877 9736 3990 9736 TIME...MOT...LOC 0046Z 266DEG 45KT 3980 9734 3888 9739
The Topeka radar (KTWX), 49 km away, was scanning. The volume nearest the first event began at 03:26 UTC.
2 thunderstorm wind. Local standard time, as filed.
As a result of weakly convecting stratiform rain showers 3 power poles were reported down at Fort Riley near the PX. Other tree branches of unknown diameters were broken as a result of the strong winds associated with the weak showers.
Weakly convecting showers caused strong winds which blew down a barn, along with some tree limbs of unknown diameter.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Kansas in 2012Every state in 2012This day in weather historyWarnings in Kansas, September 2012
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: 412947, 412949.