Alert archive / Kansas / Flash Flood Warnings in 2023
Flash Flood Warning 13, NWS Topeka, KS
NWS Topeka, KS issued this flash flood warning at Oct 25, 2023, 1:39 AM CDT for Lyon County, Kansas. It was in force for 4 hr. 2 reports 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
- Oct 25, 2023, 1:39 AM CDT (06:39 UTC)
- Expired
- Oct 25, 2023, 5:45 AM CDT
- In force
- 4 hr
- Issued by
- NWS Topeka, KS
- Area
- Storm-based polygon
- Flood severity
- None
County Lyon County, KS
The radar
The Topeka radar (KTWX), 70 km from the middle of the area, began a volume at 06:41 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 |
|---|---|---|---|
| Oct 25, 4:25 AM CDT | RAIN 5.7 | 1 Nw Emporia, KS | At KVOE studios. |
| Oct 25, 5:30 AM CDT | RAIN 9.4 | 3 Ne Emporia, KS | Relayed via KVOE radio. |
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, 6.7 hours before the alert went out and 81 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 523 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 280 m²/s²
- 0-3 km storm-relative helicity
- 528 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
025
WGUS53 KTOP 250639
FFWTOP
KSC111-251045-
/O.NEW.KTOP.FF.W.0013.231025T0639Z-231025T1045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Topeka KS
139 AM CDT Wed Oct 25 2023
The National Weather Service in Topeka has issued a
* Flash Flood Warning for...
Southern Lyon County in east central Kansas...
* Until 545 AM CDT.
* At 139 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 3 and 6 inches of rain
have fallen. Additional rainfall amounts of 1 to 2 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Emporia, Neosho Rapids and Reading.
This includes the following highways...
Kansas Turnpike between mile markers 117 and 128.
Interstate 35 between mile markers 128 and 143.
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.
&&
LAT...LON 3838 9595 3819 9636 3839 9635 3854 9595
FLASH FLOOD...RADAR INDICATED
$$1 follow-up statement
242
WGUS73 KTOP 250833
FFSTOP
Flash Flood Statement
National Weather Service Topeka KS
333 AM CDT Wed Oct 25 2023
KSC111-251045-
/O.CON.KTOP.FF.W.0013.000000T0000Z-231025T1045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lyon KS-
333 AM CDT Wed Oct 25 2023
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 AM CDT EARLY THIS
MORNING FOR SOUTHERN LYON COUNTY...
At 332 AM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 3 and 8 inches of rain have
fallen. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Emporia, Neosho Rapids and Reading.
This includes the following highways...
Kansas Turnpike between mile markers 117 and 128.
Interstate 35 between mile markers 128 and 143.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3838 9595 3819 9636 3839 9635 3854 9595
FLASH FLOOD...RADAR INDICATED
$$The office that day
Everything else NWS Topeka, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 24, 11:24 PM CDT | Areal Flood Advisory | TOP | Lyon | 3 hr |
| Oct 25, 12:27 AM CDT | Areal Flood Advisory | TOP | Lyon | 3 hr |
| Oct 25, 12:44 AM CDT | Areal Flood Advisory | TOP | Coffey, Lyon, Osage | 3 hr |
| Oct 25, 2:21 AM CDT | Flash Flood Warning | TOP | Lyon, Osage | 4 hr |
| Oct 25, 3:48 AM CDT | Areal Flood Advisory | TOP | Franklin, Osage | 3 hr |
| Oct 25, 5:12 AM CDT | Flash Flood Warning | TOP | Lyon | 4 hr |
| Oct 25, 5:41 AM CDT | Flash Flood Warning | TOP | Lyon | 4 hr |
| Oct 25, 6:24 AM CDT | Flash Flood Warning | TOP | Coffey, Franklin, Osage | 4 hr |
| Oct 25, 6:46 AM CDT | River Flood Warning | TOP | Osage | 10 hr |
| Oct 25, 9:13 AM CDT | Areal Flood Warning | TOP | Lyon | 6 hr |
| Oct 25, 10:21 AM CDT | Areal Flood Warning | TOP | Franklin, Osage | 11 hr |
| Oct 25, 3:12 PM CDT | Areal Flood Warning | TOP | Lyon | 6 hr |
Nearby
Flash Flood Warnings in Kansas, 2023Every flash flood warning in 2023
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.