Alert archive / Missouri / Areal Flood Warnings in 2021

Areal Flood Warning 3, NWS St. Louis, MO

June 25, 20215 counties in Missouri

NWS St. Louis, MO issued this areal flood warning at Jun 25, 2021, 8:25 AM CDT for 5 counties in Missouri. It was in force for 9 hr. 3 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: Jun 25, 2021, 8:25 AM CDT (13:25 UTC)
Expired: Jun 25, 2021, 5:30 PM CDT
In force: 9 hr
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Flood severity: None

Counties Audrain County, MO, Boone County, MO, Callaway County, MO, Cole County, MO, Moniteau County, MO

The radar

The St Louis radar (KLSX), 147 km from the middle of the area, began a volume at 13:29 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
Jun 25, 10:04 AM CDT	FLOOD	5 Se Columbia, MO	A VEHICLE WAS OVER TAKEN BY FLOOD WATERS BY GANS CREEK NEAR THE INTERSECTION OF ROLLING HILLS AND SUGARGROVE.
Jun 25, 10:07 AM CDT	FLOOD	3 Ssw Columbia, MO	THE INTERSECTION OF FORUM BLVD AND CRESTWOOD LN IS CLOSED DUE TO WATER OVER THE ROADWAY.
Jun 25, 10:10 AM CDT	FLOOD	5 S Columbia, MO	THE INTERSECTION OF ROCK QUARRY RD AND HIGHWAY 163 IS CLOSED DUE TO FLOODING FROM GANS CREEK.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 1.4 hours before the alert went out and 274 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: 1974 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 797 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 268 m²/s²
0-3 km storm-relative helicity: 248 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 10.8

Open this sounding in Storm Lab

The text

As transmitted.

781 
WGUS43 KLSX 251325
FLWLSX

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service St Louis MO
825 AM CDT Fri Jun 25 2021

MOC007-019-027-051-135-252030-
/O.NEW.KLSX.FA.W.0003.210625T1325Z-210625T2030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Audrain MO-Boone MO-Callaway MO-Cole MO-Moniteau MO-
825 AM CDT Fri Jun 25 2021

The National Weather Service in St Louis has issued a

* Flood Warning for...
  Western Audrain County in central Missouri...
  Boone County in central Missouri...
  Central Callaway County in central Missouri...
  Northern Cole County in central Missouri...
  Northeastern Moniteau County in central Missouri...

* Until 330 PM CDT Friday.

* At 825 AM CDT, Emergency Management and the Missouri Department of 
  Transportation indicate that widespread flooding of low lying 
  areas and road closures  continue across the warned area due to 
  the 3 to 6 inches of rainfall that occurred overnight. This flood 
  warning will replace the flash flood warnings that will expire 
  later this morning.

* Some locations in the warning include...
  Columbia, Fulton, Mexico, Centralia, Ashland, Columbia Regional 
  Airport, Hallsville, Auxvasse, Sturgeon, New Bloomfield, 
  Jamestown, Murry, Midway, Easley, Harrisburg, Marion, Kingdom 
  City, Hartsburg, Vandiver and Lupus.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3925 9243 3924 9231 3932 9230 3931 9180
      3869 9183 3868 9262 3891 9249 3898 9256

$$

CVKING

1 follow-up statement

273 
WGUS43 KLSX 252014
FLWLSX

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service St Louis MO
314 PM CDT Fri Jun 25 2021

MOC007-019-027-051-135-252230-
/O.EXT.KLSX.FA.W.0003.000000T0000Z-210625T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Audrain MO-Boone MO-Callaway MO-Cole MO-Moniteau MO-
314 PM CDT Fri Jun 25 2021

The National Weather Service in St Louis has extended the

* Flood Warning for...
  Western Audrain County in central Missouri...
  Boone County in central Missouri...
  Central Callaway County in central Missouri...
  Northern Cole County in central Missouri...
  Northeastern Moniteau County in central Missouri...

* Until 530 PM CDT.

* At 314 PM CDT, County dispatch continues to report flooding in the 
  warned area, mainly over roads in low lying areas. This flooding 
  is the result of the 3 and 6 inches of rain that fell early this 
  morning.

* Some locations that will experience flooding include...
  Columbia, Fulton, Mexico, Centralia, Ashland, Columbia Regional 
  Airport, Hallsville, Auxvasse, Sturgeon, New Bloomfield, 
  Jamestown, Murry, Midway, Easley, Harrisburg, Marion, Kingdom 
  City, Hartsburg, Vandiver and Lupus.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3925 9243 3924 9231 3932 9230 3931 9180
      3869 9183 3868 9262 3891 9249 3898 9256

$$

BSH

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 24, 10:57 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Shelby	48 min
Jun 24, 11:03 PM CDT	Tornado Warning	LSX	Monroe, Shelby	42 min
Jun 24, 11:29 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Lewis, Marion, Monroe, Pike, Ralls and 1 more	46 min
Jun 24, 11:32 PM CDT	Tornado Warning	LSX	Lewis	28 min
Jun 24, 11:35 PM CDT	Tornado Warning	LSX	Audrain, Monroe, Ralls	40 min
Jun 24, 11:40 PM CDT	Tornado Warning	LSX	Marion, Monroe, Ralls, Shelby	38 min
Jun 25, 12:09 AM CDT	Tornado Warning	LSX	Audrain, Pike, Ralls	51 min
Jun 25, 12:17 AM CDT	Severe Thunderstorm Warning	LSX	Audrain, Lincoln, Montgomery, Pike, Ralls	43 min
Jun 25, 12:57 AM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Pike	48 min
Jun 25, 1:27 AM CDT	River Flood Warning	LSX	Boone	33 hr
Jun 25, 1:54 AM CDT	Areal Flood Advisory	LSX	Montgomery	3 hr
Jun 25, 2:21 AM CDT	Areal Flood Advisory	LSX	Audrain, Boone, Callaway	106 min
Jun 25, 3:07 AM CDT	Areal Flood Advisory	LSX	Boone, Callaway, Cole, Moniteau	82 min
Jun 25, 3:34 AM CDT	Flash Flood Warning	LSX	Boone	6 hr
Jun 25, 4:04 AM CDT	Flash Flood Warning	LSX	Audrain, Boone, Callaway	6 hr
Jun 25, 4:26 AM CDT	Flash Flood Warning	LSX	Boone, Callaway, Cole, Moniteau	6 hr
Jun 25, 4:28 AM CDT	Flash Flood Warning	LSX	Callaway, Lincoln, Montgomery, Osage, Warren	6 hr
Jun 25, 7:48 AM CDT	River Flood Warning	LSX	Lincoln	62 hr
Jun 25, 10:06 AM CDT	River Flood Warning	LSX	Franklin, Warren	9 days
Jun 25, 10:06 AM CDT	River Flood Warning	LSX	Saint Charles, Saint Louis	21 days
Jun 25, 10:06 AM CDT	River Flood Warning	LSX	Boone, Callaway, Cole, Moniteau	8 days
Jun 25, 10:06 AM CDT	River Flood Warning	LSX	Callaway, Osage	21 days
Jun 25, 10:06 AM CDT	River Flood Warning	LSX	Gasconade, Montgomery	10 days
Jun 25, 4:59 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Osage	20 min
Jun 25, 5:01 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Moniteau	44 min
Jun 25, 5:05 PM CDT	River Flood Warning	LSX	Cole, Osage	9 days
Jun 25, 5:42 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway	22 min
Jun 25, 6:07 PM CDT	River Flood Warning	LSX	Lincoln	3 days
Jun 25, 6:36 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Saint Charles, Warren	39 min
Jun 25, 6:43 PM CDT	Flash Flood Warning	LSX	Audrain, Boone, Callaway	6 hr
Jun 25, 6:48 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Warren	42 min
Jun 25, 6:55 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway	19 min

Nearby

Areal Flood Warnings in Missouri, 2021 Every areal 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.