Alert archive / Missouri / Flash Flood Warnings in 2021

Flash Flood Warning 45, NWS Springfield, MO

June 11, 2021Greene County, Webster County, Missouri

NWS Springfield, MO issued this flash flood warning at Jun 11, 2021, 7:55 PM CDT for Greene County, Webster County, Missouri. It was in force for 6 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: Jun 11, 2021, 7:55 PM CDT (00:55 UTC)
Expired: Jun 12, 2021, 2:00 AM CDT
In force: 6 hr
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Flood severity: None

Counties Greene County, MO, Webster County, MO

The radar

The Springfield radar (KSGF), 27 km from the middle of the area, began a volume at 00:54 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 11, 8:39 PM CDT	FLASH FLOOD	2 E Turners, MO	WATER OVER THE ROAD, PER DISPATCH CENTER GREENE COUNTY HWY. D AND HWY 125 JUST WEST OF. UNK. DEPTH REPORTED.

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 00:00Z, 0.9 hours before the alert went out and 73 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: 2670 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1310 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: -54 m²/s²
0-3 km storm-relative helicity: -83 m²/s²
Significant tornado parameter: -1.0
Supercell composite: -10.3

Open this sounding in Storm Lab

The text

As transmitted.

744 
WGUS53 KSGF 120055
FFWSGF
MOC077-225-120700-
/O.NEW.KSGF.FF.W.0045.210612T0055Z-210612T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Springfield MO
755 PM CDT Fri Jun 11 2021

The National Weather Service in Springfield has issued a

* Flash Flood Warning for...
  Eastern Greene County in southwestern Missouri...
  Western Webster County in southwestern Missouri...

* Until 200 AM CDT Saturday.

* At 755 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 0.5 and 1.5 inches of 
  rain have fallen. 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...
  Eastern Springfield, Marshfield, Strafford, Rogersville, Fair 
  Grove, Fordland, Diggins and Northview.

This includes the following low water crossings...
  Highway 125 just south of Highway 60, Route C at The Little Sac 
  River north of Strafford, Route CC west of Fair Grove at The Pomme 
  De Terre River, Greenwood Road at The Pomme de Terre Headwaters 
  and Route A just south of Marshfield.
This includes the following streams and drainages...
  James River, Finley Creek, Stewart Creek, Farmer Branch, Terell 
  Branch, Pierson Creek, Dry Fork, Dry Creek, North Dry Sac River, 
  Grier Branch, Sims Branch, Sawyer Creek, Turnbo Creek, Little Sac 
  River, Ragsdale Creek, Pomme de Terre River, Little Pomme de Terre 
  River, Davis Branch, Martins Branch, Beaver Creek, Broad Creek, 
  Lacey Branch, Givins Branch, Panther Creek, Turner Creek, Niangua 
  River, Little Finley Creek, West Fork Niangua River, Selph Branch, 
  East Fork Niangua River, South Fork Pomme de Terre River, North 
  Fork Pomme de Terre River, South Dry Sac River, North Carolina 
  Creek, Davis Creek, Osage Fork Gasconade River, Pedelo Creek and 
  Norman Branch.

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 3709 9331 3714 9323 3722 9322 3736 9331
      3742 9332 3741 9308 3743 9307 3743 9291
      3735 9291 3707 9278 3707 9290 3709 9291

FLASH FLOOD...RADAR INDICATED

$$

JT

1 follow-up statement

591 
WGUS73 KSGF 120657
FFSSGF

Flash Flood Statement
National Weather Service Springfield MO
157 AM CDT Sat Jun 12 2021

MOC077-225-120707-
/O.EXP.KSGF.FF.W.0045.000000T0000Z-210612T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Greene MO-Webster MO-
157 AM CDT Sat Jun 12 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 2 AM CDT EARLY THIS MORNING 
FOR EASTERN GREENE AND WESTERN WEBSTER COUNTIES...

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

LAT...LON 3709 9331 3714 9323 3722 9322 3736 9331
      3742 9332 3741 9308 3743 9307 3743 9291
      3735 9291 3707 9278 3707 9290 3709 9291

$$

EW

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 7:04 PM CDT	Severe Thunderstorm Warning	SGF	Greene, Webster	56 min
Jun 11, 7:41 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Douglas, Stone	49 min
Jun 11, 7:43 PM CDT	Severe Thunderstorm Warning	SGF	Jasper	62 min
Jun 11, 8:13 PM CDT	Flash Flood Warning	SGF	Christian, Douglas	6 hr
Jun 11, 8:26 PM CDT	Severe Thunderstorm Warning	SGF	Newton	35 min
Jun 11, 8:33 PM CDT	Severe Thunderstorm Warning	SGF	Douglas, Ozark, Taney	42 min
Jun 11, 8:39 PM CDT	Flash Flood Warning	SGF	Douglas, Ozark, Taney	6 hr
Jun 11, 8:53 PM CDT	Severe Thunderstorm Warning	SGF	Ozark	37 min
Jun 11, 11:10 PM CDT	High Wind Warning	SGF	Christian, Stone, Taney	79 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.