Alert archive / Missouri / Flash Flood Warnings in 2023

Flash Flood Warning 21, NWS Springfield, MO

May 31, 2023Webster County, Missouri

NWS Springfield, MO issued this flash flood warning at May 31, 2023, 2:18 PM CDT for Webster County, Missouri. It was in force for 6 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: May 31, 2023, 2:18 PM CDT (19:18 UTC)
Expired: May 31, 2023, 8:30 PM CDT
In force: 6 hr
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Flood severity: None

County Webster County, MO

The radar

The Springfield radar (KSGF), 41 km from the middle of the area, began a volume at 19:19 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, 7.3 hours before the alert went out and 91 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: 293 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 1282 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -22 m²/s²
0-3 km storm-relative helicity: 15 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

576 
WGUS53 KSGF 311918
FFWSGF
MOC225-010130-
/O.NEW.KSGF.FF.W.0021.230531T1918Z-230601T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Springfield MO
218 PM CDT Wed May 31 2023

The National Weather Service in Springfield has issued a

* Flash Flood Warning for...
  Northwestern Webster County in southwestern Missouri...

* Until 830 PM CDT Wednesday.

* At 218 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1.5 and 2.5 inches of 
  rain have fallen. 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...
  mainly rural areas of Northwestern Webster County

This includes the following highways...
	Interstate 44 between mile markers 93 and 95...and
	near mile marker 97...and
	between mile markers 103 and 108.

This includes the following low water crossings...
  Pomme De Terre River at Greenwood Road and Niangua River at 
  Highway Y.
This includes the following streams and drainages...
  Pomme de Terre River, Selph Branch, South Fork Pomme de Terre 
  River, James River, North Fork Pomme de Terre River, Starvey 
  Creek, East Fork Niangua River, Givins Branch, Grier Branch, 
  Niangua River and West Fork Niangua River.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3736 9307 3741 9300 3748 9293 3748 9289
      3747 9285 3742 9286 3730 9299 3728 9306
      3732 9308

FLASH FLOOD...RADAR INDICATED

$$

MMT

2 follow-up statements

890 
WGUS73 KSGF 312308
FFSSGF

Flash Flood Statement
National Weather Service Springfield MO
608 PM CDT Wed May 31 2023

MOC225-010130-
/O.CON.KSGF.FF.W.0021.000000T0000Z-230601T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Webster MO-
608 PM CDT Wed May 31 2023

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM CDT THIS 
EVENING FOR NORTHWESTERN WEBSTER COUNTY...

At 608 PM CDT, Doppler radar indicated thunderstorms produced heavy 
rain across the warned area. Between 2 and 4 inches of rain have 
fallen. 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...
  mainly rural areas of Northwestern Webster County

This includes the following highways...
	Interstate 44 between mile markers 93 and 95...and
	near mile marker 97...and
	between mile markers 103 and 108.

This includes the following low water crossings...
  Pomme De Terre River at Greenwood Road and Niangua River at 
  Highway Y.
This includes the following streams and drainages...
  Niangua River, Starvey Creek, Givins Branch, West Fork Niangua 
  River, Pomme de Terre River, Grier Branch, North Fork Pomme de 
  Terre River, James River, East Fork Niangua River, Selph Branch 
  and South Fork Pomme de Terre River.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3736 9307 3741 9300 3748 9293 3748 9289
      3747 9285 3742 9286 3730 9299 3728 9306
      3732 9308

FLASH FLOOD...RADAR INDICATED

$$

JSS

949 
WGUS73 KSGF 010123
FFSSGF

Flash Flood Statement
National Weather Service Springfield MO
823 PM CDT Wed May 31 2023

MOC225-010133-
/O.EXP.KSGF.FF.W.0021.000000T0000Z-230601T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Webster MO-
823 PM CDT Wed May 31 2023

...FLASH FLOOD WARNING WILL EXPIRE AT 830 PM CDT THIS EVENING FOR 
NORTHWESTERN WEBSTER COUNTY...

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

LAT...LON 3736 9307 3741 9300 3748 9293 3748 9289
      3747 9285 3742 9286 3730 9299 3728 9306
      3732 9308

$$

MB

The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 7:31 PM CDT	Areal Flood Advisory	SGF	Vernon	5 hr
May 31, 1:26 PM CDT	Areal Flood Advisory	SGF	Laclede	6 hr
May 31, 1:26 PM CDT	Special Weather Statement	SGF	Laclede	34 min
May 31, 1:57 PM CDT	Areal Flood Advisory	SGF	Dallas, Greene, Laclede, Webster, Wright	6 hr
May 31, 2:38 PM CDT	Areal Flood Advisory	SGF	Christian, Dallas, Greene, Laclede, Lawrence, Polk and 1 more	4 hr
May 31, 2:47 PM CDT	Special Weather Statement	SGF	Greene	28 min
May 31, 3:32 PM CDT	Flash Flood Warning	SGF	Greene, Lawrence	2 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.