Alert archive / Kansas / Flash Flood Warnings in 2021

Flash Flood Warning 33, NWS Kansas City, MO

July 10, 2021Linn County, Miami County, Kansas; Bates County, Cass County, Missouri

NWS Kansas City, MO issued this flash flood warning at Jul 10, 2021, 8:47 AM CDT for Linn County, Miami County, Kansas; Bates County, Cass County, Missouri. It was in force for 3 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: Jul 10, 2021, 8:47 AM CDT (13:47 UTC)
Expired: Jul 10, 2021, 11:45 AM CDT
In force: 3 hr
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Flood severity: None

Counties Linn County, KS, Miami County, KS, Bates County, MO, Cass County, MO

The radar

The Pleasant Hill radar (KEAX), 72 km from the middle of the area, began a volume at 13:48 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

Springfield, MO (KSGF), launched 12:00Z, 1.8 hours before the alert went out and 189 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 917 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 703 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 113 m²/s²
0-3 km storm-relative helicity: 125 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

As transmitted.

700 
WGUS53 KEAX 101347
FFWEAX
KSC107-121-MOC013-037-101645-
/O.NEW.KEAX.FF.W.0033.210710T1347Z-210710T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Kansas City/Pleasant Hill MO
847 AM CDT Sat Jul 10 2021

The National Weather Service in Pleasant Hill MO has issued a

* Flash Flood Warning for...
  Northern Linn KS County in east central Kansas...
  Southern Miami County in east central Kansas...
  Northwestern Bates County in west central Missouri...
  Southwestern Cass County in west central Missouri...

* Until 1145 AM CDT.

* At 847 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 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...
  Paola, Osawatomie, Adrian, La Cygne, Drexel, Linn Valley, Parker, 
  Fontana, Amsterdam, Amoret, Merwin, Passaic, New Lancaster and 
  Beagle.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3851 9507 3861 9454 3834 9423 3812 9508
      3826 9508 3826 9507

FLASH FLOOD...RADAR INDICATED

$$

Atkins

The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 10, 1:44 AM CDT	Severe Thunderstorm Warning	EAX	Atchison, Doniphan, Leavenworth	46 min
Jul 10, 2:09 AM CDT	Severe Thunderstorm Warning	EAX	Johnson, Leavenworth, Wyandotte	51 min
Jul 10, 2:28 AM CDT	Severe Thunderstorm Warning	EAX	Atchison, Leavenworth	47 min
Jul 10, 2:51 AM CDT	Special Weather Statement	EAX	Johnson, Wyandotte	39 min
Jul 10, 3:32 AM CDT	Special Weather Statement	EAX	Miami	43 min
Jul 10, 8:27 AM CDT	Special Weather Statement	EAX	Linn	48 min
Jul 10, 5:45 PM CDT	Special Weather Statement	EAX	Wyandotte	45 min
Jul 10, 6:39 PM CDT	Special Weather Statement	EAX	Leavenworth	51 min
Jul 9, 8:01 PM CDT	Special Weather Statement	EAX	Schuyler	44 min
Jul 9, 8:10 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Schuyler	35 min
Jul 9, 8:37 PM CDT	Special Weather Statement	EAX	Grundy	38 min
Jul 9, 8:44 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Schuyler	46 min
Jul 9, 8:50 PM CDT	Special Weather Statement	EAX	Putnam, Schuyler	40 min
Jul 9, 9:18 PM CDT	Special Weather Statement	EAX	Linn	42 min
Jul 9, 9:23 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Macon	52 min
Jul 9, 9:26 PM CDT	Special Weather Statement	EAX	Adair	49 min
Jul 9, 9:36 PM CDT	Tornado Warning	EAX	Adair, Macon	12 min
Jul 9, 10:07 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Macon	38 min
Jul 9, 10:44 PM CDT	Special Weather Statement	EAX	Linn, Macon, Randolph, Sullivan	46 min
Jul 9, 10:51 PM CDT	Special Weather Statement	EAX	Harrison	39 min
Jul 9, 11:28 PM CDT	Special Weather Statement	EAX	Linn, Randolph	47 min
Jul 10, 12:04 AM CDT	Severe Thunderstorm Warning	EAX	Chariton, Howard, Macon, Randolph	41 min
Jul 10, 12:53 AM CDT	Severe Thunderstorm Warning	EAX	Atchison, Holt, Nodaway, Worth	52 min
Jul 10, 1:37 AM CDT	Flash Flood Warning	EAX	Adair, Sullivan	8 hr
Jul 10, 1:40 AM CDT	Severe Thunderstorm Warning	EAX	Andrew, Atchison, DeKalb, Gentry, Holt, Nodaway and 1 more	50 min
Jul 10, 2:32 AM CDT	Severe Thunderstorm Warning	EAX	Andrew, Daviess, DeKalb, Gentry, Harrison, Nodaway and 1 more	43 min
Jul 10, 2:35 AM CDT	Flash Flood Warning	EAX	Linn, Macon	7 hr
Jul 10, 3:11 AM CDT	Special Weather Statement	EAX	Caldwell, Carroll, Daviess, Grundy, Harrison, Livingston and 2 more	49 min
Jul 10, 5:30 AM CDT	River Flood Warning	EAX	Chariton, Macon	3 days
Jul 10, 5:30 AM CDT	River Flood Warning	EAX	Carroll, Chariton, Linn, Livingston	5 days
Jul 10, 5:30 AM CDT	River Flood Warning	EAX	Cass, Henry, Johnson	2 hr
Jul 10, 7:46 AM CDT	River Flood Warning	EAX	Howard	13 hr
Jul 10, 9:45 AM CDT	Areal Flood Advisory	EAX	Adair, Linn, Macon, Sullivan	4 days
Jul 10, 3:47 PM CDT	Special Weather Statement	EAX	Atchison	43 min
Jul 10, 5:07 PM CDT	Special Weather Statement	EAX	Holt	38 min
Jul 10, 6:06 PM CDT	Special Weather Statement	EAX	Buchanan, Clinton, Daviess, DeKalb, Gentry	39 min
Jul 10, 6:18 PM CDT	Severe Thunderstorm Warning	EAX	Buchanan, Clay, Clinton, Platte	27 min
Jul 10, 6:25 PM CDT	Special Weather Statement	EAX	Jackson	50 min
Jul 10, 6:47 PM CDT	Special Weather Statement	EAX	Clay, Clinton, Platte	43 min

Nearby

Flash Flood Warnings in Kansas, 2021 Flash Flood Warnings in Missouri, 2021 Every 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.