Hail, Shawnee
- When
- April 21, 12:06 AM CST
- Where
- Shawnee County, 4 mi N of Topeka
- Measured
- 1.75 in hail
- Reported by
- AMATEUR RADIO
- Coordinates
- 39.100, -95.683
Flash Flood and Hail in Kansas, April 21, 2001
3 hail, 1 flash flood, as filed by the National Weather Service.
Where it happened
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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
- 4
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 Topeka, KS wrote its last area forecast discussion before the first event at Apr 20, 2:00 PM CST, 10 hours 6 minutes earlier.
Area forecast discussion, Apr 20, 2:00 PM CST, 10 hours 6 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TOPEKA KS 3 PM CDT FRI APR 20 2001 THUNDERSTORM CHANCES ARE MAIN FORECAST CONCERN THROUGH THE WEEKEND. LATEST SATELLITE SHOWING EXTENSIVE MID AND HIGH CLOUDS CONTINUING ACROSS THE REGION...WHICH MAY THIN OUT LATER...BUT SHOULD PERSIST THROUGH MUCH OF THE NIGHT. WARM FRONT HAS LIFTED NORTH INTO SOUTHERN NEBRASKA WITH DRYLINE EXTENDING SOUTHWESTWARD THROUGH WESTCENTRAL KANSAS. INITIAL SHORTWAVE MOVING ACROSS THE AREA WILL BE REPLACED BY STRONGER SHORTWAVE NOW MOVING THROUGH THE CENTRAL ROCKIES. VERY STRONG CAP IN PLACE ALTHOUGH BETTER POTENTIAL FOR CAP BEING BROKE LATER IN THE NIGHT AS WAVE LIFTS OUT AND TEMPORARY BACKING FLOW ALLOWS DEEPER LOW LEVEL MOISTURE TO RETURN. SOME POTENTIAL FOR CONVECTION TO DEVELOP EARLIER AHEAD OF DRYLINE. WILL KEEP POPS GOING ALL AREAS WITH HIGHER POPS AND BETTER SEVERE POTENTIAL ACROSS THE NORTH AND NORTHCENTRAL. AS SFC LOW MOVES OFF TO THE NORTHEAST EXPECT FRONT TO MOVE INTO THE CWA FROM WEST OVERNIGHT BUT NOT MAKE IT MUCH FURTHER SOUTHEAST THAN THE EASTCENTRAL AREAS. WOULD EXPECT THE POSSIBILITY OF MORE CONVECTION TO REDEVELOP ALONG AND NORTH OF BOUNDARY IN THE AFTERNOON OVER SOUTHERN 2/3 OF THE CWA WITH A BETTER CHANCE INTO THE NIGHT AS NEXT SHORTWAVE EMERGES FROM THE HIGH PLAINS. WILL INCREASE POPS ACROSS THE CWA SATURDAY NIGHT TO AROUND 50 PERCENT. MAIN UPPER LOW WILL BEGIN TO APPROACH THE AREA SUNDAY INTO SUNDAY NIGHT. EXTENSIVE CLOUDS AND SOME PRECIP WILL LIKELY HELP TO LIMIT HIGHS TEMPS. WILL GO WITH COMPROMISE OF COOLER FWC SATURDAY AND WARMER MAV/FAN FOR SUNDAY. WILL ALSO GO WITH LIKELY POPS SUNDAY NIGHT AS MAING UPPER LEVEL PUSH ENTERS THE CWA FROM WEST TO EAST. .TOP...NONE. 63
In the hours before
Local storm report, Apr 20, 11:03 PM CST, 1 hour 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
1203 AM CDT SAT APR 21 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1159 PM 4 N TOPEKA KS 1.75 INCH HAIL
04/20/01 SHAWNEELocal storm report, Apr 20, 11:06 PM CST, 1 hour before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
1206 AM CDT SAT APR 21 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
^
1200 AM WINCHESTER KS 1 INCH HAIL
04/21/01 JEFFERSONLocal storm report, Apr 20, 11:17 PM CST, 49 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
1217 AM CDT SAT APR 21 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1215 AM OZAWKIE KS 1.75 INCH HAIL
04/21/01 JEFFERSON QUARTER SIZE UPLocal storm report, Apr 20, 11:25 PM CST, 41 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
1225 AM CDT SAT APR 21 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1220 AM SOLOMON KS .88 INCH HAIL
04/21/01 DICKINSONLocal storm report, Apr 20, 11:45 PM CST, 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
1245 AM CDT SAT APR 21 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1235 AM 2 N GOFF KS .75 INCH HAIL
04/21/01 NEMAHALocal storm report, Apr 21, 12:05 AM CST, 1 minute before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
105 AM CDT SAT APR 21 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1245 AM 9 SW POWHATTAN KS .75 INCH HAIL
04/21/01 BROWNThe radar
The Topeka radar (KTWX), 49 km away, was scanning. The volume nearest the first event began at 06:04 UTC.
Event by event
3 hail, 1 flash flood. Local standard time, as filed.
Flash Flood, Riley
- When
- April 21, 12:10 AM CST to 1:00 AM CST
- Where
- Riley County, Manhattan
- Reported by
- NEWSPAPER
- Coordinates
- 39.297, -96.735 (the zone’s center; the record gives no point)
Heavy rains produced flash flooding with water 3 feet deep for a time on the north side of Manhattan.
Hail, Shawnee
- When
- April 21, 12:45 AM CST
- Where
- Shawnee County, 1 mi NW of Rossville
- Measured
- 0.75 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 39.150, -95.967
Hail, Dickinson
- When
- April 21, 1:15 AM CST
- Where
- Dickinson County, 5 mi NNE of Detroit
- Measured
- 0.88 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 39.000, -97.083
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- Flash Flood
- Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornadoes and Hail in Kansas, April 21, 2001
- Tornadoes and Hail in Kansas, April 21, 2001
- Hail and Damaging Winds in Texas, April 21, 2001
- Blizzard in Wyoming, April 21 to 22, 2001
- Winter Storm in Nebraska, April 21 to 22, 2001
- Hail in Kansas, April 21, 2001
- Tornado in California, April 21, 2001
- Tornado in Nevada, April 21, 2001
- Tornado in Arizona, April 21, 2001
- Hail in Texas, April 21, 2001
- Damaging Wind in New Mexico, April 21, 2001
- Winter Storm in Nebraska, April 21 to 22, 2001
More
Every storm in Kansas in 2001Every state in 2001This day in weather historyWarnings in Kansas, April 2001
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 2026-09-24. Each event’s entry at NCEI: 5240690, 5240691, 5240692, 5240693.