Alert archive / Kansas / Flash Flood Warnings in 2021

Flash Flood Warning 3, NWS Topeka, KS

May 16, 20214 counties in Kansas

NWS Topeka, KS issued this flash flood warning at May 16, 2021, 10:14 AM CDT for 4 counties in Kansas. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 16, 2021, 10:14 AM CDT (15:14 UTC)
Expired
May 16, 2021, 2:07 PM CDT
In force
4 hr
Issued by
NWS Topeka, KS
Area
Storm-based polygon
Flood severity
None

Counties Geary County, KS, Lyon County, KS, Morris County, KS, Wabaunsee County, KS

The radar

The Topeka radar (KTWX), 31 km from the middle of the area, began a volume at 15:14 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.

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 3.2 hours before the alert went out and 283 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.

Skew-T log-pSkew-T log-p diagram, Omaha, NE at 12:00Z on 2021-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 9 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 12:00Z on 2021-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -64 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
9 J/kg
Mixed-layer CIN
-124 J/kg
Mixed-layer LCL
924 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
-64 m²/s²
0-3 km storm-relative helicity
-33 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

995 
WGUS53 KTOP 161514
FFWTOP
KSC061-111-127-197-161915-
/O.NEW.KTOP.FF.W.0003.210516T1514Z-210516T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Topeka KS
1014 AM CDT Sun May 16 2021

The National Weather Service in Topeka has issued a

* Flash Flood Warning for...
  Geary County in east central Kansas...
  Lyon County in east central Kansas...
  Eastern Morris County in east central Kansas...
  Wabaunsee County in east central Kansas...

* Until 215 PM CDT.

* At 1014 AM CDT, Doppler radar and automated rain gauges indicated 
  thunderstorms producing heavy rain across the warned area. Between 
  2 and 5 inches of rain have fallen. Flash flooding is already 
  occurring.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Doppler 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 flash flooding include...
  Emporia, Junction City, Council Grove, Alma, Eskridge, Grandview 
  Plaza, Americus, Alta Vista, Hartford, Dwight, Neosho Rapids, 
  Harveyville, Reading, Allen, Admire, Bushong, Dunlap, Council 
  Grove Lake and Volland.

This includes the following highways...
	Kansas Turnpike between mile markers 121 and 154.
	Interstate 35 between mile markers 128 and 142.
	Interstate 70 between mile markers 295 and 315.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 3886 9691 3909 9684 3906 9650 3904 9650
      3903 9611 3885 9595 3829 9596 3834 9636
      3852 9635 3852 9648 3886 9663

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

Skow
2 follow-up statements
244 
WGUS73 KTOP 161526
FFSTOP

Flash Flood Statement
National Weather Service Topeka KS
1026 AM CDT Sun May 16 2021

KSC061-111-127-197-161915-
/O.CON.KTOP.FF.W.0003.000000T0000Z-210516T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Geary KS-Lyon KS-Morris KS-Wabaunsee KS-
1026 AM CDT Sun May 16 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 PM CDT THIS 
AFTERNOON FOR GEARY, LYON, EASTERN MORRIS AND WABAUNSEE COUNTIES...

At 1024 AM CDT, local law enforcement reported thunderstorms 
producing heavy rain across the warned area. Between 2 and 5 inches 
of rain have fallen. Flash flooding is already occurring.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Law enforcement.

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 flash flooding include...
  Emporia, Junction City, Council Grove, Alma, Eskridge, Grandview 
  Plaza, Americus, Alta Vista, Hartford, Dwight, Neosho Rapids, 
  Harveyville, Reading, Allen, Admire, Bushong, Dunlap, Council 
  Grove Lake and Volland.

This includes the following highways...
	Kansas Turnpike between mile markers 121 and 154.
	Interstate 35 between mile markers 128 and 142.
	Interstate 70 between mile markers 295 and 314.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area. Law enforcement in Harveyville report that they are 
closing Harveyville Road and Walton Road due to overflow from 
Dragoon Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 3886 9691 3909 9684 3906 9650 3904 9650
      3903 9611 3885 9595 3829 9596 3834 9636
      3852 9635 3852 9648 3886 9663

FLASH FLOOD...OBSERVED

$$

Skow
634 
WGUS73 KTOP 161907
FFSTOP

Flash Flood Statement
National Weather Service Topeka KS
207 PM CDT Sun May 16 2021

KSC061-111-127-197-161917-
/O.CAN.KTOP.FF.W.0003.000000T0000Z-210516T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Geary KS-Lyon KS-Morris KS-Wabaunsee KS-
207 PM CDT Sun May 16 2021

...FLASH FLOOD WARNING FOR GEARY, LYON, EASTERN MORRIS AND WABAUNSEE 
COUNTIES HAS BEEN REPLACED WITH A FLOOD WARNING...

LAT...LON 3886 9691 3909 9684 3906 9650 3904 9650
      3903 9611 3885 9595 3829 9596 3834 9636
      3852 9635 3852 9648 3886 9663

$$

Skow

The office that day

Everything else NWS Topeka, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 16, 12:26 AM CDTSpecial Weather StatementTOPDickinson34 min
May 16, 12:35 AM CDTSpecial Weather StatementTOPOttawa25 min
May 16, 1:05 AM CDTSpecial Weather StatementTOPLyon25 min
May 16, 1:08 AM CDTSpecial Weather StatementTOPDickinson37 min
May 16, 1:36 AM CDTAreal Flood AdvisoryTOPOttawa3 hr
May 16, 2:31 AM CDTFlash Flood WarningTOPOttawa6 hr
May 16, 7:11 AM CDTAreal Flood AdvisoryTOPGeary, Wabaunsee3 hr
May 16, 7:15 AM CDTAreal Flood AdvisoryTOPLyon3 hr
May 16, 8:38 AM CDTAreal Flood WarningTOPOttawa9 hr
May 16, 8:55 AM CDTAreal Flood AdvisoryTOPLyon3 hr
May 16, 9:06 AM CDTAreal Flood AdvisoryTOPOsage, Shawnee, Wabaunsee3 hr
May 16, 9:31 AM CDTRiver Flood WarningTOPOsage28 hr
May 16, 9:31 AM CDTRiver Flood WarningTOPLyon, Osage28 hr
May 16, 9:43 AM CDTAreal Flood AdvisoryTOPDouglas, Franklin3 hr
May 16, 10:18 AM CDTRiver Flood WarningTOPFranklin, Osage46 hr
May 16, 11:21 AM CDTRiver Flood WarningTOPFranklin62 hr
May 16, 11:38 AM CDTRiver Flood WarningTOPWabaunsee16 hr
May 16, 11:59 AM CDTRiver Flood WarningTOPOttawa, Saline3 days
May 16, 12:02 PM CDTAreal Flood AdvisoryTOPShawnee, Wabaunsee3 hr
May 16, 1:32 PM CDTSevere Thunderstorm WarningTOPLyon28 min
May 16, 2:07 PM CDTAreal Flood WarningTOPGeary, Lyon, Morris, Wabaunsee10 hr
May 16, 2:41 PM CDTSpecial Weather StatementTOPLyon34 min
May 16, 3:14 PM CDTRiver Flood WarningTOPDickinson, Ottawa, Saline16 hr
May 16, 3:24 PM CDTSpecial Weather StatementTOPOsage36 min
May 16, 3:46 PM CDTSpecial Weather StatementTOPOsage29 min
May 16, 4:18 PM CDTSpecial Weather StatementTOPFranklin27 min
May 16, 4:22 PM CDTFlash Flood WarningTOPCloud2 hr
May 16, 5:33 PM CDTAreal Flood AdvisoryTOPAnderson, Coffey, Franklin, Lyon, Morris, Osage2 hr
May 16, 6:20 PM CDTSpecial Weather StatementTOPFranklin25 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.