Alert archive / Kansas / Flash Flood Warnings in 2021
Flash Flood Warning 22, NWS Topeka, KS
NWS Topeka, KS issued this flash flood warning at Jul 15, 2021, 2:19 AM CDT for 5 counties in Kansas. It was in force for 4 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 15, 2021, 2:19 AM CDT (07:19 UTC)
- Expired
- Jul 15, 2021, 6:15 AM CDT
- In force
- 4 hr
- Issued by
- NWS Topeka, KS
- Area
- Storm-based polygon
- Flood severity
- None
Counties Clay County, KS, Dickinson County, KS, Geary County, KS, Pottawatomie County, KS, Riley County, KS
The radar
The Topeka radar (KTWX), 47 km from the middle of the area, began a volume at 07:22 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 15, 3:45 AM CDT | HEAVY RAIN 1.47 | 4 S Grandview Plaza, KS | MESONET STATION FW1204 JUNCTION CITY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 7.3 hours before the alert went out and 97 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 476 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 1856 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 119 m²/s²
- 0-3 km storm-relative helicity
- 218 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.2
The text
As transmitted.
087
WGUS53 KTOP 150719
FFWTOP
KSC027-041-061-149-161-151115-
/O.NEW.KTOP.FF.W.0022.210715T0719Z-210715T1115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Topeka KS
219 AM CDT Thu Jul 15 2021
The National Weather Service in Topeka has issued a
* Flash Flood Warning for...
Northern Dickinson County in central Kansas...
Geary County in east central Kansas...
Southern Riley County in northeastern Kansas...
Southwestern Pottawatomie County in northeastern Kansas...
Southeastern Clay County in north central Kansas...
* Until 615 AM CDT.
* At 217 AM CDT, Doppler radar and automated gauges indicated
thunderstorms producing heavy rain across the warned area. Up to
three inches of rain have already fallen. Flash flooding is ongoing
or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flooding include...
Manhattan, Junction City, Abilene, Ogden, Grandview Plaza, Chapman,
Wakefield, Enterprise, St. George, Milford, Manchester, Talmage,
Milford Lake, Moonlight, Keats and Tuttle Creek Lake.
Additional rainfall amounts of one to three inches are possible in
the warned area.
This includes Interstate 70 between mile markers 268 and 321.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.
&&
LAT...LON 3913 9737 3931 9713 3928 9661 3934 9666
3927 9634 3917 9636 3916 9638 3917 9639
3904 9639 3904 9650 3902 9650 3890 9708
3893 9737
FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR
$$
Baerg3 follow-up statements
502
WGUS73 KTOP 150803
FFSTOP
Flash Flood Statement
National Weather Service Topeka KS
303 AM CDT Thu Jul 15 2021
KSC027-041-061-149-161-151115-
/O.CON.KTOP.FF.W.0022.000000T0000Z-210715T1115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Dickinson-Geary-Riley-Pottawatomie-Clay-
303 AM CDT Thu Jul 15 2021
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 AM CDT FOR
NORTHERN DICKINSON...GEARY...SOUTHERN RILEY...SOUTHWESTERN
POTTAWATOMIE AND SOUTHEASTERN CLAY COUNTIES...
At 303 AM CDT, Doppler radar and automated gauges indicated
thunderstorms producing heavy rain across the warned area. Up to
five inches of rain have fallen. Flash flooding is ongoing or
expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other drainage
and low lying areas.
Some locations that will experience flooding include...
Manhattan, Junction City, Abilene, Ogden, Grandview Plaza, Chapman,
Wakefield, Enterprise, St. George, Milford, Manchester, Talmage,
Milford Lake, Moonlight, Keats and Tuttle Creek Lake.
Additional rainfall amounts of one to three are possible in the
warned area.
This includes Interstate 70 between mile markers 268 and 321.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.
&&
LAT...LON 3913 9737 3931 9713 3928 9661 3934 9666
3927 9634 3917 9636 3916 9638 3917 9639
3904 9639 3904 9650 3902 9650 3890 9708
3893 9737
FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL...2-3 INCHES IN 1 HOUR
$$
Baerg030
WGUS73 KTOP 150904
FFSTOP
Flash Flood Statement
National Weather Service Topeka KS
404 AM CDT Thu Jul 15 2021
KSC027-041-061-149-161-151115-
/O.CON.KTOP.FF.W.0022.000000T0000Z-210715T1115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Dickinson-Geary-Riley-Pottawatomie-Clay-
404 AM CDT Thu Jul 15 2021
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 AM CDT FOR
NORTHERN DICKINSON...GEARY...SOUTHERN RILEY...SOUTHWESTERN
POTTAWATOMIE AND SOUTHEASTERN CLAY COUNTIES...
At 401 AM CDT, Doppler radar and automated gauges indicated
thunderstorms producing heavy rain across the warned area. Up to
five and a half inches of rain have fallen. Flash flooding is
ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other drainage
and low lying areas.
Some locations that will experience flooding include...
Manhattan, Junction City, Abilene, Ogden, Grandview Plaza, Chapman,
Wakefield, Enterprise, St. George, Milford, Manchester, Talmage,
Milford Lake, Moonlight, Keats and Tuttle Creek Lake.
Additional rainfall amounts up to one inch are possible in the
warned area.
This includes Interstate 70 between mile markers 268 and 321.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.
&&
LAT...LON 3913 9737 3931 9713 3928 9661 3934 9666
3927 9634 3917 9636 3916 9638 3917 9639
3904 9639 3904 9650 3902 9650 3890 9708
3893 9737
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
Baerg983
WGUS73 KTOP 151109
FFSTOP
Flash Flood Statement
National Weather Service Topeka KS
609 AM CDT Thu Jul 15 2021
KSC027-041-061-149-161-151119-
/O.EXP.KTOP.FF.W.0022.000000T0000Z-210715T1115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Dickinson-Geary-Riley-Pottawatomie-Clay-
609 AM CDT Thu Jul 15 2021
...THE FLASH FLOOD WARNING FOR NORTHERN DICKINSON...GEARY...SOUTHERN
RILEY...SOUTHWESTERN POTTAWATOMIE AND SOUTHEASTERN CLAY COUNTIES WILL
EXPIRE AT 615 AM CDT...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.
LAT...LON 3913 9737 3931 9713 3928 9661 3934 9666
3927 9634 3917 9636 3916 9638 3917 9639
3904 9639 3904 9650 3902 9650 3890 9708
3893 9737
$$
BaergThe office that day
Everything else NWS Topeka, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 12:20 AM CDT | Areal Flood Advisory | TOP | Clay, Cloud, Ottawa, Riley | 4 hr |
| Jul 15, 12:33 AM CDT | Flash Flood Warning | TOP | Clay, Cloud, Riley | 3 hr |
| Jul 15, 3:27 AM CDT | Areal Flood Warning | TOP | Clay, Cloud, Riley | 6 hr |
| Jul 15, 3:31 AM CDT | Flash Flood Watch | TOP | Anderson, Clay, Coffey, Dickinson, Douglas, Franklin and 10 more | 16 hr |
| Jul 15, 3:46 AM CDT | Areal Flood Advisory | TOP | Dickinson, Geary, Morris, Wabaunsee | 4 hr |
| Jul 15, 6:08 AM CDT | Areal Flood Warning | TOP | Clay, Dickinson, Geary, Pottawatomie, Riley | 3 hr |
| Jul 15, 7:34 AM CDT | River Flood Warning | TOP | Riley | 15 hr |
| Jul 15, 9:05 AM CDT | Flash Flood Warning | TOP | Clay, Geary, Riley | 4 hr |
| Jul 15, 9:53 AM CDT | Areal Flood Advisory | TOP | Pottawatomie, Riley | 3 hr |
| Jul 15, 3:28 PM CDT | Special Weather Statement | TOP | Republic | 32 min |
| Jul 15, 4:06 PM CDT | Special Weather Statement | TOP | Republic | 24 min |
| Jul 15, 4:48 PM CDT | Severe Thunderstorm Warning | TOP | Republic | 27 min |
| Jul 15, 4:54 PM CDT | Special Weather Statement | TOP | Cloud | 36 min |
Nearby
Flash Flood Warnings in Kansas, 2021Every flash flood warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.