Again on July 31st heat indices of 105-110 returned to east central, notheast, and north central Kansas. The heat persisted through August 2nd across the northern and western counties as a cold front dove into the area.
Every event with a place to put it; 23 filed by county or forecast zone are drawn at its center, in a lighter ring. 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.
Again on July 31st heat indices of 105-110 returned to east central, notheast, and north central Kansas. The heat persisted through August 2nd across the northern and western counties as a cold front dove into the area. By August 3rd the cold front passed through central Kansas, thus bringing an end to this heat wave.
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 Aug 1, 5:37 AM CST, 5 hours 23 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TOPEKA KS 637 AM CDT MON AUG 1 2011 ...UPDATE TO AVIATION... .DISCUSSION... UPPER RIDGE REMAINS ANCHORED OVER THE CENTRAL U.S. THIS MORNING. ANOTHER WARM MORNING WITH TEMPERATURES RUNNING IN THE UPPER 70S TO LOWER 80S AT 08Z. FOR TODAY WITH DEEP MIXING TO AROUND 700 MB EXPECTED AND 850 MB THERMAL AXIS OVER MUCH OF THE CWA WITH TEMPS 27 TO 31 DEGREES CELSIUS TEMPERATURES WILL SOAR INTO THE LOW 100S FOR MUCH OF THE AREA. SOME WEAK CONVERGENCE IS FORECAST OVER PORTIONS OF AREA THIS AFTERNOON ALONG WITH HIGH THETA-E AIR AT 850 MB IN THE EASTERN COUNTIES. AN ISOLATED THUNDERSTORM IS POSSIBLE IN THE AFTERNOON AND GIVEN TEMPERATURE-DEWPOINT SPREADS OF 30 TO 40 DEGREES ALONG WITH STEEP LAPSE RATES STRONG WIND GUSTS ARE POSSIBLE WITH ANY STORM THAT DEVELOPS. TONIGHT ANOTHER WARM NIGHT IS ANTICIPATED WITH LOWS FROM THE MID 70S TO LOWER 80S. ON TUESDAY A FRONTAL BOUNDARY IS FORECAST TO MOVE SOUTH ACROSS THE PLAINS WITH THE NAM THE MORE AGGRESSIVE OF THE MODELS WHILE THE GFS IS ON THE SLOW SIDE ALONG WITH THE GEM. THE SREF AND ECMWF SUPPORT A MIDDLE OF THE ROAD APPROACH AND WENT WITH THIS FOR NOW. THUS BACKED OFF ON WIND SHIFT TUESDAY AFTERNOON SAVE THE FAR NORTHWEST. THE UPPER RIDGE WILL STILL BE IN PLACE. THERMAL AXIS WILL CONTINUE OVER THE AREA. FORECAST SOUNDINGS SHOW MIXING TO ALMOST 850 MB. DRIER LOW LEVEL AIR IS EXPECTED WHICH WILL AID IN THE TEMPERATURES SOARING INTO THE 105 TO 110 DEGREE RANGE. HEAT INDICES ARE FORECAST IN THE AFTERNOON TO RANGE FROM AROUND 105 IN THE NORTH TO 111 IN THE SOUTH. THUS WILL CONTINUE THE EXCESSIVE HEAT WARNING. DEPENDING ON THE PLACEMENT OF THE FRONTAL BOUNDARY ON WEDNESDAY THE NORTHERN CONTINUES MAY GET A LITTLE REPRIEVE FROM THE EXCESSIVE HEAT WITH SLIGHTLY COOLER NORTHWEST FLOW. BUT AFTERNOON HEAT INDEX VALUES LOOK TO BE IN THE 100 TO 103 DEGREE RANGE THERE. UPPER RIDGE BREAKS DOWN SOME WEDNESDAY NIGHT AND THURSDAY WHILE FRONTAL BOUNDARY WILL LINGER IN THE AREA. IMPULSES ALONG WITH THE LOW LEVEL JET WILL BRING A CHANCE OF THUNDERSTORMS TO THE AREA. THE SOUTHERN TIER OF COUNTIES MAY NEED TO HAVE EXCESSIVE HEAT WARNING EXTENDED INTO THURSDAY AFTERNOON AS HEAT INDEX VALUES MAY BE AROUND 105 AGAIN AS MODELS SUGGEST THAT WARMER AIR WILL REMAIN OVER EAST CENTRAL KANSAS. FOR FRIDAY THROUGH SUNDAY UPPER HIGH IS SUPPRESSED SOUTHWARD INTO OKLAHOMA AND TEXAS WITH NORTHERN KANSAS ON THE SOUTHERN EDGE OF THE WESTERLIES. SHORTWAVE IMPULSES ARE FORECAST TO EJECT OUT ACROSS THE PLAINS AND SOUTHERLY LOW LEVEL JET WILL LEAD TO SCATTERED NOCTURNAL THUNDERSTORMS. SOUTHERN COUNTIES COULD FLIRT AGAIN WITH AFTERNOON HEAT INDICES ABOVE 100 ON FRIDAY. RAIN CHANCES WILL INCREASE OVER THE WEEKEND WITH QUASI-ZONAL FLOW DEVELOPING. 53 && .AVIATION... MODELS CONTINUE TO MAINTAIN RATHER STRONG CONSISTENCY IN GENERATING ISOLATED CONVECTION THIS AFTERNOON IN NORTHEAST KANSAS. THERE ARE ENOUGH INGREDIENTS IN PLACE TO SUGGEST THIS IS POSSIBLE...BUT ITS LIKELIHOOD OF DEVELOPMENT...THEN BEING IN THE AERODROMES...THEN BEING IMPACTING CONDITIONS IN THAT AERODROME STILL ARE TOO LOW TO FORECAST IT AT THIS POINT. VFR CONDITIONS WITH MAINLY SOUTHEAST WINDS WILL DOMINATE ONCE THE MVFR BR BURNS OFF EARLY THIS MORNING AT TOP. 65 && .TOP WATCHES/WARNINGS/ADVISORIES... EXCESSIVE HEAT WARNING UNTIL 7 PM CDT WEDNESDAY FOR KSZ008>012- 020>024-026-034>040-054>056-058-059. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TOPEKA KS 430 AM CDT MON AUG 1 2011 KSZ008>012-020>024-026-034>040-054>056-058-059-020930- REPUBLIC-WASHINGTON-MARSHALL-NEMAHA-BROWN-CLOUD-CLAY-RILEY- POTTAWATOMIE-JACKSON-JEFFERSON-OTTAWA-DICKINSON-GEARY-MORRIS- WABAUNSEE-SHAWNEE-DOUGLAS-LYON-OSAGE-FRANKLIN-COFFEY-ANDERSON- 430 AM CDT MON AUG 1 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL...NORTH CENTRAL AND NORTHEAST KANSAS. .DAY ONE...TODAY AND TONIGHT. HEAT INDICES WILL FROM 105 TO 112 DEGREES IN THE AFTERNOON HOURS TODAY. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. HEAT INDICES WILL CONTINUE TO PEAK FROM 103 TO 111 DEGREES IN THE AFTERNOON HOURS OF TUESDAY AND WEDNESDAY. THUNDERSTORM CHANCES EXIST FOR AT LEAST PORTIONS OF THE AREA FROM TUESDAY NIGHT THROUGH SUNDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED THROUGH TONIGHT.
The national radar mosaic for the moment the first event began.
23 heat. Local standard time, as filed.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
Another heat wave affected all of northeast Kansas, starting in late July and lasting through the first couple days of August. ASOS measurements from across the area indicated that heat indices between 105 and 110 were experienced across the entire area.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Kansas in 2011Every state in 2011This day in weather historyWarnings in Kansas, August 2011
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: 343082, 343084, 343087, 343089, 343090, 343093, 343095, 343098, 343108, 343110, 343112, 343118, 343123, 343128, 343131, 343136, 343138, 343139, 343142, 343143, 343147, 343151, 343153.