Alert archive / Missouri / Areal Flood Advisories in 2021

Areal Flood Advisory 21, NWS Kansas City, MO

July 10, 20214 counties in Missouri

NWS Kansas City, MO issued this areal flood advisory at Jul 10, 2021, 9:45 AM CDT for 4 counties in Missouri. It was in force for 4 days.

The area

The outline as issued.

The facts

Issued: Jul 10, 2021, 9:45 AM CDT (14:45 UTC)
Expired: Jul 14, 2021, 10:00 AM CDT
In force: 4 days
Issued by: NWS Kansas City, MO
Area: Storm-based polygon

Counties Adair County, MO, Linn County, MO, Macon County, MO, Sullivan County, MO

The radar

The Des Moines radar (KDMX), 178 km from the middle of the area, began a volume at 14:47 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

Davenport, (KDVN), launched 12:00Z, 2.8 hours before the alert went out and 251 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 986 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 92 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

231 
WGUS83 KEAX 101445
FLSEAX

Flood Advisory
National Weather Service Kansas City/Pleasant Hill MO
945 AM CDT Sat Jul 10 2021

MOC001-115-121-211-110000-
/O.NEW.KEAX.FA.Y.0021.210710T1445Z-210711T0000Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Adair MO-Linn MO MO-Macon MO-Sullivan MO-
945 AM CDT Sat Jul 10 2021

The National Weather Service in Pleasant Hill MO has issued a

* Flood Advisory for...
  Eastern Linn MO County in north central Missouri...
  Northern Macon County in north central Missouri...
  Sullivan County in north central Missouri...
  Western Adair County in northeastern Missouri...

* Until 700 PM CDT Saturday.

* At 945 AM CDT, Doppler radar indicated heavy rain due to 
  thunderstorms. Minor flooding is ongoing and expected to continue 
  today. Between 5 and 8 inches of rain fell overnight.

* Some locations that will experience flooding include...
  Macon, Milan, Bevier, Green City, Bucklin, Novinger, Atlanta, 
  Callao, Greencastle, Browning, New Cambria, Elmer, Ethel, South 
  Gifford, Winigan, New Boston, Green Castle, Saint Catherine and 
  Reger.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4036 9331 4035 9306 4035 9286 4034 9286
      4034 9285 4034 9284 4034 9282 4034 9281
      4034 9280 4034 9278 4034 9276 3974 9236
      3975 9302

$$

HB

8 follow-up statements

436 
WGUS83 KEAX 102352
FLSEAX

Flood Advisory
National Weather Service Kansas City/Pleasant Hill MO
652 PM CDT Sat Jul 10 2021

MOC001-115-121-211-111300-
/O.EXT.KEAX.FA.Y.0021.000000T0000Z-210711T1300Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Adair MO-Linn MO MO-Macon MO-Sullivan MO-
652 PM CDT Sat Jul 10 2021

The National Weather Service in Pleasant Hill MO has extended the

* Flood Advisory for...
  Eastern Linn MO County in north central Missouri...
  Northern Macon County in north central Missouri...
  Sullivan County in north central Missouri...
  Western Adair County in northeastern Missouri...

* Until 800 AM CDT Sunday.

* At 652 PM CDT, The Missouri Department of Transportation was 
  reporting several roads closed in the advisory area due to 
  flooding. Minor flooding is already occurring. Highway J over 
  Muscle Fork in Linn County and Route HH in Macon County were 
  closed due to water over the road.

* Some locations that will experience flooding include...
  Macon, Milan, Bevier, Green City, Bucklin, Novinger, Atlanta, 
  Callao, Greencastle, Browning, New Cambria, Elmer, Ethel, South 
  Gifford, Winigan, New Boston, Green Castle, Saint Catherine and 
  Reger.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4036 9331 4035 9306 4035 9286 4034 9286
      4034 9285 4034 9284 4034 9282 4034 9281
      4034 9280 4034 9278 4034 9276 3974 9236
      3975 9302

$$

CDB

131 
WGUS83 KEAX 111011
FLSEAX

Flood Advisory
National Weather Service Kansas City/Pleasant Hill MO
511 AM CDT Sun Jul 11 2021

MOC001-115-121-211-111700-
/O.EXT.KEAX.FA.Y.0021.000000T0000Z-210711T1700Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Adair MO-Linn MO MO-Macon MO-Sullivan MO-
511 AM CDT Sun Jul 11 2021

The National Weather Service in Pleasant Hill MO has extended the

* Flood Advisory for...
  Eastern Linn MO County in north central Missouri...
  Northern Macon County in north central Missouri...
  Sullivan County in north central Missouri...
  Western Adair County in northeastern Missouri...

* Until noon CDT Sunday.

* At 511 AM CDT, Local law enforcement and Department of 
  Transportation have reported flooding in the advisory area. Minor 
  flooding is already occurring. Between 5 and 8 inches of rain have 
  fallen.

* Some locations that will experience flooding include...
  Macon, Milan, Bevier, Green City, Bucklin, Novinger, Atlanta, 
  Callao, Greencastle, Browning, New Cambria, Elmer, Ethel, South 
  Gifford, Winigan, New Boston, Green Castle, Saint Catherine and 
  Reger.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4036 9331 4035 9306 4035 9286 4034 9286
      4034 9285 4034 9284 4034 9282 4034 9281
      4034 9280 4034 9278 4034 9276 3974 9236
      3975 9302

$$

Pesel

288 
WGUS83 KEAX 111514
FLSEAX

Flood Advisory
National Weather Service Kansas City/Pleasant Hill MO
1014 AM CDT Sun Jul 11 2021

MOC001-115-121-211-120000-
/O.EXT.KEAX.FA.Y.0021.000000T0000Z-210712T0000Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Adair MO-Linn MO MO-Macon MO-Sullivan MO-
1014 AM CDT Sun Jul 11 2021

The National Weather Service in Pleasant Hill MO has extended the

* Flood Advisory for...
  Eastern Linn MO County in north central Missouri...
  Northern Macon County in north central Missouri...
  Sullivan County in north central Missouri...
  Western Adair County in northeastern Missouri...

* Until 700 PM CDT Sunday.

* At 1014 AM CDT, local law enforcement reported flooding in the 
  advisory area. Minor flooding is already occurring. Between 6 and 
  10 inches of rain have fallen.

* Some locations that will experience flooding include...
  Macon, Milan, Bevier, Green City, Bucklin, Novinger, Atlanta, 
  Callao, Greencastle, Browning, New Cambria, Elmer, Ethel, South 
  Gifford, Winigan, New Boston, Green Castle, Saint Catherine and 
  Reger.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4036 9331 4035 9306 4035 9286 4034 9286
      4034 9285 4034 9284 4034 9282 4034 9281
      4034 9280 4034 9278 4034 9276 3974 9236
      3975 9302

$$

HB

077 
WGUS83 KEAX 112350
FLSEAX

Flood Advisory
National Weather Service Kansas City/Pleasant Hill MO
650 PM CDT Sun Jul 11 2021

MOC001-115-121-211-121500-
/O.EXT.KEAX.FA.Y.0021.000000T0000Z-210712T1500Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Adair MO-Linn MO MO-Macon MO-Sullivan MO-
650 PM CDT Sun Jul 11 2021

The National Weather Service in Pleasant Hill MO has extended the

* Flood Advisory for...
  Eastern Linn MO County in north central Missouri...
  Northern Macon County in north central Missouri...
  Sullivan County in north central Missouri...
  Western Adair County in northeastern Missouri...

* Until 1000 AM CDT Monday.

* At 650 PM CDT, local law enforcement reported flooding in the 
  advisory area. Minor flooding is already occurring. Between 5 and 
  8 inches of rain have fallen.

* Some locations that will experience flooding include...
  Macon, Milan, Bevier, Green City, Bucklin, Novinger, Atlanta, 
  Callao, Greencastle, Browning, New Cambria, Elmer, Ethel, South 
  Gifford, Winigan, New Boston, Green Castle, Saint Catherine and 
  Reger.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4036 9331 4035 9306 4035 9286 4034 9286
      4034 9285 4034 9284 4034 9282 4034 9281
      4034 9280 4034 9278 4034 9276 3974 9236
      3975 9302

$$

BT

069 
WGUS83 KEAX 121452
FLSEAX

Flood Advisory
National Weather Service Kansas City/Pleasant Hill MO
952 AM CDT Mon Jul 12 2021

MOC001-115-121-211-130000-
/O.EXT.KEAX.FA.Y.0021.000000T0000Z-210713T0000Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Adair MO-Linn MO MO-Macon MO-Sullivan MO-
952 AM CDT Mon Jul 12 2021

The National Weather Service in Pleasant Hill MO has extended the

* Flood Advisory for...
  Eastern Linn MO County in north central Missouri...
  Northern Macon County in north central Missouri...
  Sullivan County in north central Missouri...
  Western Adair County in northeastern Missouri...

* Until 700 PM CDT Monday.

* At 952 AM CDT, local law enforcement reports some roads still 
  flooded in the advisory area.

* Some locations that will experience flooding include...
  Macon, Milan, Bevier, Green City, Bucklin, Novinger, Atlanta, 
  Callao, Greencastle, Browning, New Cambria, Elmer, Ethel, South 
  Gifford, Winigan, New Boston, Green Castle, Saint Catherine and 
  Reger.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4036 9331 4035 9306 4035 9286 4034 9286
      4034 9285 4034 9284 4034 9282 4034 9281
      4034 9280 4034 9278 4034 9276 3974 9236
      3975 9302

$$

Atkins

648 
WGUS83 KEAX 122355
FLSEAX

Flood Advisory
National Weather Service Kansas City/Pleasant Hill MO
655 PM CDT Mon Jul 12 2021

MOC001-115-121-211-131500-
/O.EXT.KEAX.FA.Y.0021.000000T0000Z-210713T1500Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Adair MO-Linn MO MO-Macon MO-Sullivan MO-
655 PM CDT Mon Jul 12 2021

The National Weather Service in Pleasant Hill MO has extended the

* Flood Advisory for...
  Eastern Linn MO County in north central Missouri...
  Northern Macon County in north central Missouri...
  Sullivan County in north central Missouri...
  Western Adair County in northeastern Missouri...

* Until 1000 AM CDT Tuesday.

* At 655 PM CDT, local law enforcement reported flooding in the 
  advisory area. Minor flooding is already occurring. Between 5 and 
  8 inches of rain have fallen.

* Some locations that will experience flooding include...
  Macon, Milan, Bevier, Green City, Bucklin, Novinger, Atlanta, 
  Callao, Greencastle, Browning, New Cambria, Elmer, Ethel, South 
  Gifford, Winigan, New Boston, Green Castle, Saint Catherine and 
  Reger.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4036 9331 4035 9306 4035 9286 4034 9286
      4034 9285 4034 9284 4034 9282 4034 9281
      4034 9280 4034 9278 4034 9276 3974 9236
      3975 9302

$$

BT

307 
WGUS83 KEAX 131434
FLSEAX

Flood Advisory
National Weather Service Kansas City/Pleasant Hill MO
934 AM CDT Tue Jul 13 2021

MOC001-115-121-211-141500-
/O.EXT.KEAX.FA.Y.0021.000000T0000Z-210714T1500Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Adair MO-Linn MO MO-Macon MO-Sullivan MO-
934 AM CDT Tue Jul 13 2021

The National Weather Service in Pleasant Hill MO has extended the

* Flood Advisory for...
  Eastern Linn MO County in north central Missouri...
  Northern Macon County in north central Missouri...
  Sullivan County in north central Missouri...
  Western Adair County in northeastern Missouri...

* Until 1000 AM CDT Wednesday.

* At 934 AM CDT, local law enforcement reported flooding in the 
  advisory area. Minor flooding is already occurring. Between 5 and 
  8 inches of rain have fallen.

* Some locations that will experience flooding include...
  Macon, Milan, Bevier, Green City, Bucklin, Novinger, Atlanta, 
  Callao, Greencastle, Browning, New Cambria, Elmer, Ethel, South 
  Gifford, Winigan, New Boston, Green Castle, Saint Catherine and 
  Reger.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4036 9331 4035 9306 4035 9286 4034 9286
      4034 9285 4034 9284 4034 9282 4034 9281
      4034 9280 4034 9278 4034 9276 3974 9236
      3975 9302

$$

HB

008 
WGUS83 KEAX 141455
FLSEAX

Flood Advisory
National Weather Service Kansas City/Pleasant Hill MO
955 AM CDT Wed Jul 14 2021

MOC001-115-121-211-141505-
/O.EXP.KEAX.FA.Y.0021.000000T0000Z-210714T1500Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Adair MO-Linn MO MO-Macon MO-Sullivan MO-
955 AM CDT Wed Jul 14 2021

...FLOOD ADVISORY WILL EXPIRE AT 10 AM CDT THIS MORNING FOR EASTERN 
LINN MO, NORTHERN MACON, SULLIVAN AND WESTERN ADAIR COUNTIES...

Flood waters have receded. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 4036 9331 4035 9306 4035 9286 4034 9286
      4034 9285 4034 9284 4034 9282 4034 9281
      4034 9280 4034 9278 4034 9276 3974 9236
      3975 9302

$$

SAW

The office that day

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

Issued	Product	Office	Counties	Lasted
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, 1:44 AM CDT	Severe Thunderstorm Warning	EAX	Buchanan, Clinton, DeKalb, Platte	46 min
Jul 10, 2:09 AM CDT	Severe Thunderstorm Warning	EAX	Clay, Jackson, Platte	51 min
Jul 10, 2:28 AM CDT	Severe Thunderstorm Warning	EAX	Buchanan, Caldwell, Clay, Clinton, Daviess, DeKalb and 2 more	47 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, 2:51 AM CDT	Special Weather Statement	EAX	Cass, Jackson, Johnson, Lafayette	39 min
Jul 10, 3:11 AM CDT	Special Weather Statement	EAX	Caldwell, Carroll, Daviess, Grundy, Harrison, Livingston and 2 more	49 min
Jul 10, 3:32 AM CDT	Special Weather Statement	EAX	Cass, Johnson, Lafayette, Pettis, Saline	43 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, 8:27 AM CDT	Special Weather Statement	EAX	Bates	48 min
Jul 10, 8:47 AM CDT	Flash Flood Warning	EAX	Bates, Cass	3 hr
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

Areal Flood Advisories in Missouri, 2021 Every areal flood advisory 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.