Alert archive / Missouri / Flash Flood Warnings in 2023

Flash Flood Warning 13, NWS Kansas City, MO

August 1, 2023Carroll County, Chariton County, Livingston County, Missouri

NWS Kansas City, MO issued this flash flood warning at Aug 1, 2023, 8:18 AM CDT for Carroll County, Chariton County, Livingston County, Missouri. It was in force for 3 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: Aug 1, 2023, 8:18 AM CDT (13:18 UTC)
Expired: Aug 1, 2023, 11:15 AM CDT
In force: 3 hr
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Flood severity: None

Counties Carroll County, MO, Chariton County, MO, Livingston County, MO

The radar

The Pleasant Hill radar (KEAX), 126 km from the middle of the area, began a volume at 13:23 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
Aug 1, 9:00 AM CDT	RAIN 5.11	3 N Hale, MO

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 12:00Z, 1.3 hours before the alert went out and 210 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: 596 J/kg
Mixed-layer CIN: -363 J/kg
Mixed-layer LCL: 1254 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 253 m²/s²
0-3 km storm-relative helicity: 295 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

147 
WGUS53 KEAX 011318
FFWEAX
MOC033-041-117-011615-
/O.NEW.KEAX.FF.W.0013.230801T1318Z-230801T1615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Kansas City/Pleasant Hill MO
818 AM CDT Tue Aug 1 2023

The National Weather Service in Pleasant Hill MO has issued a

* Flash Flood Warning for...
  Northeastern Carroll County in north central Missouri...
  West Central Chariton County in north central Missouri...
  Central Livingston County in north central Missouri...

* Until 1115 AM CDT.

* At 818 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2.5 and 4 inches of 
  rain have fallen. 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...
  Chillicothe, Hale, Bosworth, Wheeling, Triplett, Avalon and Spring 
  Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3989 9370 3993 9351 3977 9336 3976 9336
      3975 9336 3974 9336 3973 9336 3972 9336
      3970 9336 3970 9335 3970 9330 3947 9309
      3945 9322 3943 9334

FLASH FLOOD...RADAR INDICATED

$$

73

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 31, 8:01 PM CDT	Flood Watch	EAX	Caldwell, Carroll, Chariton, Cooper, Daviess, Howard and 6 more	14 hr
Aug 1, 2:56 AM CDT	Severe Thunderstorm Warning	EAX	Johnson, Pettis	34 min
Aug 1, 3:24 AM CDT	Severe Thunderstorm Warning	EAX	Johnson, Lafayette, Pettis, Saline	51 min
Aug 1, 3:29 AM CDT	Areal Flood Advisory	EAX	Johnson, Lafayette, Pettis, Saline	51 min
Aug 1, 4:18 AM CDT	Special Weather Statement	EAX	Pettis, Saline	27 min
Aug 1, 4:20 AM CDT	Flash Flood Warning	EAX	Johnson, Lafayette, Pettis, Saline	5 hr
Aug 1, 5:17 AM CDT	Areal Flood Advisory	EAX	Carroll, Lafayette, Saline	33 min
Aug 1, 5:21 AM CDT	Special Weather Statement	EAX	Saline	24 min
Aug 1, 5:33 AM CDT	Special Weather Statement	EAX	Pettis	27 min
Aug 1, 5:50 AM CDT	Flash Flood Warning	EAX	Carroll, Lafayette, Saline	4 hr
Aug 1, 5:55 AM CDT	Areal Flood Advisory	EAX	Carroll, Livingston	3 hr
Aug 1, 6:33 AM CDT	Special Weather Statement	EAX	Carroll	27 min
Aug 1, 7:17 AM CDT	Special Weather Statement	EAX	Saline	28 min
Aug 1, 7:29 AM CDT	River Flood Warning	EAX	Cooper	21 hr
Aug 1, 7:29 AM CDT	River Flood Warning	EAX	Cooper, Saline	21 hr
Aug 1, 9:39 AM CDT	Areal Flood Advisory	EAX	Johnson, Lafayette, Pettis, Saline	3 hr
Aug 1, 9:48 AM CDT	Areal Flood Advisory	EAX	Carroll, Lafayette, Saline	3 hr
Aug 1, 11:18 AM CDT	Areal Flood Advisory	EAX	Carroll, Chariton, Livingston	2 hr
Aug 1, 1:04 PM CDT	Flood Watch	EAX	Adair, Carroll, Chariton, Cooper, Grundy, Howard and 9 more	21 hr
Aug 1, 2:25 PM CDT	Heat Advisory	EAX	Bates, Buchanan, Cass, Clay, Clinton, Cooper and 8 more	30 hr

Nearby

Flash Flood Warnings in Missouri, 2023 Every 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.