Alert archive / Missouri / Flash Flood Warnings in 2021

Flash Flood Warning 9, NWS Kansas City, MO

June 19, 2021Howard County, Randolph County, Missouri

NWS Kansas City, MO issued this flash flood warning at Jun 19, 2021, 9:09 PM CDT for Howard County, Randolph County, Missouri. It was in force for 5 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: Jun 19, 2021, 9:09 PM CDT (02:09 UTC)
Expired: Jun 20, 2021, 2:32 AM CDT
In force: 5 hr
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Flood severity: None

Counties Howard County, MO, Randolph County, MO

The radar

The Pleasant Hill radar (KEAX), 159 km from the middle of the area, began a volume at 02:10 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

Topeka, KS (KTOP), launched 00:00Z, 2.2 hours before the alert went out and 269 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: 2221 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 2018 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 118 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.8

Open this sounding in Storm Lab

The text

As transmitted.

143 
WGUS53 KEAX 200209
FFWEAX
MOC089-175-200800-
/O.NEW.KEAX.FF.W.0009.210620T0209Z-210620T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Kansas City/Pleasant Hill MO
909 PM CDT Sat Jun 19 2021

The National Weather Service in Pleasant Hill MO has issued a

* Flash Flood Warning for...
  Northeastern Howard County in central Missouri...
  Southern Randolph County in north central Missouri...

* Until 300 AM CDT.

* At 909 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1.5 and 2.5 inches of 
  rain have fallen. The expected rainfall rate is 1 to 2 inches in 1 
  hour. 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...
  Moberly, Huntsville, Higbee, Clark, Armstrong, Renick and Clifton 
  Hill.

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 3932 9271 3949 9270 3944 9231 3925 9231
      3925 9243 3919 9246 3926 9272

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR

$$

Kurtz

2 follow-up statements

010 
WGUS73 KEAX 200609
FFSEAX

Flash Flood Statement
National Weather Service Kansas City/Pleasant Hill MO
109 AM CDT Sun Jun 20 2021

MOC089-175-200800-
/O.CON.KEAX.FF.W.0009.000000T0000Z-210620T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Howard MO-Randolph MO-
109 AM CDT Sun Jun 20 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 3 AM CDT EARLY THIS 
MORNING FOR NORTHEASTERN HOWARD AND SOUTHERN RANDOLPH COUNTIES...

At 109 AM CDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 2 and 4 inches of rain have 
fallen. The expected rainfall rate is 0.5 to 1 inch in 1 hour. 
Additional rainfall amounts of 0.5 to 1 inch 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...
  Moberly, Huntsville, Higbee, Clark, Armstrong, Renick and Clifton 
  Hill.

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 3932 9271 3949 9270 3944 9231 3925 9231
      3925 9243 3919 9246 3926 9272

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...0.5-1 INCH IN 1 HOUR

$$

Kurtz

534 
WGUS73 KEAX 200732
FFSEAX

Flash Flood Statement
National Weather Service Kansas City/Pleasant Hill MO
232 AM CDT Sun Jun 20 2021

MOC089-175-200742-
/O.CAN.KEAX.FF.W.0009.000000T0000Z-210620T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Howard MO-Randolph MO-
232 AM CDT Sun Jun 20 2021

...FLASH FLOOD WARNING FOR NORTHEASTERN HOWARD AND SOUTHERN RANDOLPH 
COUNTIES HAS BEEN REPLACED WITH A FLOOD WARNING...

Northern Howard county remains in a newer Flash Flood Warning that 
covers the northern half of the county. Including the cities of 
Armstrong and Fayette.

LAT...LON 3932 9271 3949 9270 3944 9231 3925 9231
      3925 9243 3919 9246 3926 9272

$$

Kurtz

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 7:42 PM CDT	Severe Thunderstorm Warning	EAX	Randolph	33 min
Jun 19, 8:13 PM CDT	Special Weather Statement	EAX	Randolph	47 min
Jun 19, 8:28 PM CDT	Severe Thunderstorm Warning	EAX	Randolph	32 min
Jun 19, 8:57 PM CDT	Special Weather Statement	EAX	Randolph	48 min
Jun 19, 9:25 PM CDT	Severe Thunderstorm Warning	EAX	Randolph	35 min
Jun 19, 9:28 PM CDT	Special Weather Statement	EAX	Macon	47 min
Jun 19, 9:33 PM CDT	Areal Flood Advisory	EAX	Adair, Macon	6 hr
Jun 19, 9:40 PM CDT	Severe Thunderstorm Warning	EAX	Chariton, Howard, Randolph	35 min
Jun 19, 9:58 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Macon	32 min
Jun 19, 10:33 PM CDT	Severe Thunderstorm Warning	EAX	Chariton	27 min
Jun 19, 10:56 PM CDT	Special Weather Statement	EAX	Chariton	49 min
Jun 19, 11:08 PM CDT	Severe Thunderstorm Warning	EAX	Carroll, Chariton, Livingston	37 min
Jun 19, 11:32 PM CDT	Areal Flood Advisory	EAX	Carroll, Chariton, Howard, Livingston	6 hr
Jun 19, 11:44 PM CDT	Special Weather Statement	EAX	Chariton	46 min
Jun 20, 12:01 AM CDT	Flash Flood Warning	EAX	Chariton, Howard	7 hr
Jun 20, 2:30 AM CDT	Areal Flood Warning	EAX	Randolph	3 hr
Jun 20, 3:34 AM CDT	Special Weather Statement	EAX	Gentry, Nodaway	41 min
Jun 20, 8:34 AM CDT	Special Weather Statement	EAX	Sullivan	41 min
Jun 20, 9:10 AM CDT	Special Weather Statement	EAX	Adair	50 min
Jun 20, 11:26 AM CDT	Special Weather Statement	EAX	Randolph	34 min
Jun 20, 6:07 PM CDT	Special Weather Statement	EAX	Andrew	38 min
Jun 20, 6:24 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, DeKalb	36 min
Jun 20, 6:52 PM CDT	Severe Thunderstorm Warning	EAX	Harrison, Mercer, Putnam, Sullivan	23 min

Nearby

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.