On the afternoon of April 22, 2010 thunderstorms brought heavy rain to the area, which resulted in flash flooding in Franklin, Lyon, and Osage Counties. 5 inches fell across the area and caused many roads to be closed.
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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.
On the afternoon of April 22, 2010 thunderstorms brought heavy rain to the area, which resulted in flash flooding in Franklin, Lyon, and Osage Counties. Rainfall amounts of up to 3.5 inches fell across the area and caused many roads to be closed.
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 Apr 22, 5:47 AM CST, 36 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TOPEKA KS 647 AM CDT THU APR 22 2010 .UPDATE... UPDATED FOR THE 12 UTC AVIATION && .DISCUSSION... SEE PREVIOUS DISCUSSION BELOW. && .AVIATION... DEEPER MOISTURE WILL ADVECT NORTHWARD TOWARDS THE REGION. THIS WILL CAUSE PERIODS OF SHOWERS AND SCATTERED THUNDERSTORMS AT THE TAF SITES. WHEN THE HEAVIER RAIN MOVES NORTHWARD THROUGH THE MID MORNING HOURS...CEILINGS WILL DROP TO MVFR AND VISBYS MAY BE RESTRICTED TO 1 TO 2SM AT TIMES. WE MAY SEE A BREAK IN THE SHOWERS AND THUNDERSTORMS THIS EVENING BEFORE A SECOND ROUND OF SHOWERS AND THUNDERSTORMS MOVE ACROSS THE TAF SITES LATE TONIGHT AND THROUGH THE MID MORNING HOURS OF FRIDAY. THE GROUND FOG AT KTOP...RESTRICTING VISBYS TO 1 TO 2SM...WILL MIX OUT BY 14Z...BUT VISBYS MAY BE RESTRICTED ONCE AGAIN BY THE MODERATE RAINFALL. GARGAN && .PREV DISCUSSION... /ISSUED 306 AM CDT THU APR 22 2010/ DISCUSSION... FORECAST FOCUS WILL AGAIN BE ON PRECIPITATION THE NEXT SEVERAL DAYS...WITH AN EMPHASIS ON THE POTENTIAL FOR SEVERE WEATHER FRIDAY. WV IMAGERY AT 08Z THIS MORNING DEPICTS LONGWAVE TROUGH ENTRENCHED OVER THE WESTERN CONUS...WITH SEVERAL LOBES OF ENERGY ROTATING AROUND THE MEAN CIRCULATION CENTER OVER SOUTHERN NEVADA. WEAK 500MB RIDGING ACROSS THE CENTRAL CONUS NOTED ON OBJECTIVE UA ANALYSIS. 40KT 850MB LLJ HAS PICKED UP ACROSS CENTRAL OK. COINCIDENTALLY... SPOTTY CONVECTION BEGINNING TO LIGHT UP ACROSS CENTRAL TO SOUTHEAST KANSAS NEAR FORECAST ISSUANCE TIME...WHICH WILL BEGIN TO IMPACT THE TOP CWA EARLY THIS MORNING. TODAY...UPPER LOW MOVES INTO THE FOUR CORNERS REGION. IN RESPONSE...LEE SFC LOW DEEPENS AND ATTENDANT WARM FRONT LIFTS NORTHWARD THROUGH THE REGION. PRECIPITATION ON-GOING AT THE START OF THE FORECAST PERIOD WILL LIFT NORTHWARD THROUGH THE DAY...WITH CONTINUED FEED OF WARM/MOIST AIRMASS FROM THE SOUTH. WEAK RIDGING ABOVE 500MB WILL LIMIT DEEPER FORCING FOR ASCENT...BUT WARM ADVECTION WILL BE MORE THAN SUFFICIENT TO SPREAD PRECIP ACROSS THE AREA. THUNDER LIKELY DUE TO WEAK ELEVATED INSTABILITY...PRIMARILY SOUTH OF I-70 PRIOR TO 23/00Z NOTED ON 22/00Z MODEL SUITE FORECAST SOUNDINGS. TONIGHT THROUGH FRIDAY MORNING...WARM FRONT LIFTS INTO SOUTHERN NEBRASKA AFTER 00Z. LOCALLY...SUBSIDENCE AND INFLUENCE OF MIDLEVEL SHORTWAVE RIDGE LOOK TO BRING A LULL IN THE PRECIPITATION BETWEEN AROUND 03Z AND 09Z. AFTER 06Z...LEADING LOBE OF ENERGY LIFTS THROUGH THE TX PANHANDLE. FORCING FOR ASCENT WILL BE AIDED BY CONTINUED WAA VIA NEAR 50KT LLJ...AND EXIT REGION OF 300MB JET STREAK. SECOND ROUND OF PRECIPITATION WILL QUICKLY LIFT NORTHEASTWARD THROUGH CENTRAL OKLAHOMA AND SOUTH CENTRAL KANSAS...AND REACH THE SOUTHERN PORTIONS OF THE FA NEAR 09Z. TSRA WILL THEN EXIT KS AND MOVE INTO MO BY MID-MORNING...WHICH WILL ALLOW FOR SOME CLEARING AND HEATING ACROSS NE KS AFTER 15Z. FRIDAY AFTERNOON...FORECAST BECOMES A BIT MORE MUDDLED...AND WILL BE HIGHLY INFLUENCED BY EARLY DAY INSOLATION AND DESTABILIZATION...AND MESOSCALE FEATURES STILL TO SOON TO BE ACCURATELY RESOLVED BY AVAILABLE GUIDANCE. AXIS OF BEST INSTABILITY/STRONGEST SHEAR WITHIN THE WARM SECTOR SOUTH OF THE WARM FRONT AND AHEAD OF THE DRYLINE LIES IN THE NORTHEAST PART OF THE STATE. BOUNDARIES LEFT OVER BY THE MORNING CONVECTION...AND SFC DRYLINE WILL SERVE AS THE FOCI FOR CONVECTIVE INITIATION. 2000J/KG MLCAPE AVAILABLE...WEAKLY CAPPED ATM...AND 40-50KTS 0-6KM BULK SHEAR WITHIN THIS AREA. LARGE HAIL...DAMAGING WINDS...AND POTENTIALLY A TORNADO ARE ALL PLAUSIBLE SEVERE WEATHER THREATS WITH AFTERNOON CONVECTION. BETTER TORNADO THREAT SHOULD BE NORTH OF THE FORECAST AREA NEARER THE WARM FRONT WHERE NEAR SFC WIND FIELD WILL BE MORE BACKED. ANOTHER LULL IN TSRA COMES FRIDAY NIGHT THROUGH SATURDAY MORNING. MAINTAINED CHANCE POPS FOR THIS PERIOD PENDING UNCERTAINTY IN SPEED OF CLEARING...SO EXPECT CHANGES TO BE MADE NEARER TO EVENT CONCLUSION. SATURDAY...STILL SOME UNCERTAINTY REGARDING THE TRACK OF THE CENTER OF THE 500MB LOW...AND THE IMPACT OF SHORTWAVE TROUGH MOVING ALONG THE BASE OF THE LONGWAVE TROUGH ON THE PRIMARY LOW. PROXIMITY OF NEARLY STACKED LOW...CONTINUED WAA AHEAD OF THE LOW...AND EVENTUAL COLD FROPA TO OCCUR DURING THE DAY...PROMPTED PROLONGATION OF CHANCE POPS. SUNDAY...CHANCE FOR RAIN SHOWERS CONTINUES WITH WRAP AROUND MOISTURE ON THE BACKSIDE OF THE BROAD UPPER LEVEL SYSTEM. OTHERWISE...MAIN CONCERN WILL BE COOLER TEMPERATURES. MAX TEMPS WILL REACH THE LOWER 60S...COOLER THAN THE 70S OBSERVED THE PREVIOUS WEEK...AND A FEW DEGREES BELOW AVERAGE FOR THE END OF APRIL. NO CHANGES BEYOND SUNDAY. LUNDE && .TOP WATCHES/WARNINGS/ADVISORIES...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TOPEKA KS 445 AM CDT THU APR 22 2010 KSZ008>012-020>024-026-034>040-054>056-058-059-230945- REPUBLIC-WASHINGTON-MARSHALL-NEMAHA-BROWN-CLOUD-CLAY-RILEY- POTTAWATOMIE-JACKSON-JEFFERSON-OTTAWA-DICKINSON-GEARY-MORRIS- WABAUNSEE-SHAWNEE-DOUGLAS-LYON-OSAGE-FRANKLIN-COFFEY-ANDERSON- 445 AM CDT THU APR 22 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL...NORTH CENTRAL AND NORTHEAST KANSAS. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS ARE EXPECTED ACROSS THE ENTIRE AREA TODAY AND TONIGHT. ALTHOUGH SEVERE WEATHER IS NOT ANTICIPATED...SMALL HAIL...GUSTY WINDS AND BRIEF HEAVY RAIN MAY BE POSSIBLE WITH THE STRONGER STORMS THAT DEVELOP. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THUNDERSTORMS ARE POSSIBLE ACROSS THE ENTIRE AREA FRIDAY. SEVERE WEATHER IS POSSIBLE FRIDAY AFTERNOON AND EVENING...GENERALLY ALONG AND EAST OF A DEVELOPING DRYLINE. THE PRIMARY THREATS DURING THIS PERIOD WILL BE LARGE HAIL AND DAMAGING WINDS. AN ISOLATED TORNADO IS ALSO POSSIBLE. SPECIFICS REGARDING THIS EVENT WILL BECOME INCREASINGLY CLEAR THE NEXT 24 HOURS. STAY TUNED FOR UPDATES. THE CHANCE FOR THUNDERSTORMS AREA WIDE CONTINUES SATURDAY. SOME STRONG STORMS ARE POSSIBLE...BUT SEVERE WEATHER IS NOT ANTICIPATED. .SPOTTER INFORMATION STATEMENT... SPOTTERS MAY BE NEEDED LATE TONIGHT AND FRIDAY AFTERNOON AND EVENING. LUNDE
The Topeka radar (KTWX), 83 km away, was scanning. The volume nearest the first event began at 12:22 UTC.
6 flash flood, 2 flood. Local standard time, as filed.
Reports of minor street flooding were reported from Abilene. Also a portion of Old Highway 40 to the west of Abilene is under water.
Roads in Solomon were closed due to high water.
An emergency manager reported that small streams were overflowing their banks onto local roads.
A road was washed out .5 mile north of Road 110 just outside Hartford. Spotter reported road under water well into Coffee County as well.
Multiple county roads were flooded in the Princeton area.
A county road was washed out approximately 1 mile north of Ottawa.
Several roads around Emporia reported to have water running over them. Some roads are reported to be impassable.
Road 240 was flooded up to 2 feet deep and was barricaded.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Kansas in 2010Every state in 2010This day in weather historyWarnings in Kansas, April 2010
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: 225570, 225571, 225562, 225564, 225565, 225566, 225567, 225568.