Alert archive / Missouri / Flash Flood Warnings in 2021

Flash Flood Warning 40, NWS Springfield, MO

May 27, 2021Douglas County, Missouri

NWS Springfield, MO issued this flash flood warning at May 27, 2021, 2:37 PM CDT for Douglas County, Missouri. It was in force for 6 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: May 27, 2021, 2:37 PM CDT (19:37 UTC)
Expired: May 27, 2021, 8:45 PM CDT
In force: 6 hr
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Flood severity: None

County Douglas County, MO

The radar

The Springfield radar (KSGF), 92 km from the middle of the area, began a volume at 19:37 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
May 27, 3:30 PM CDT	FLASH FLOOD	2 E Ava, MO	ROAD CLOSED DUE TO FLASH FLOODING ROUTE FF (DOUGLAS COUNTY).
May 27, 3:30 PM CDT	FLASH FLOOD	4 Nnw Brushyknob, MO	ROAD CLOSED DUE TO FLASH FLOODING ROUTE U (DOUGLAS COUNTY).
May 27, 3:30 PM CDT	FLASH FLOOD	4 Wnw Ava, MO	ROAD CLOSED DUE TO FLASH FLOODING ROUTE Y EASTBOUND (DOUGLAS COUNTY).

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, 7.6 hours before the alert went out and 123 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: 295 J/kg
Mixed-layer CIN: -229 J/kg
Mixed-layer LCL: 964 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 160 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

883 
WGUS53 KSGF 271937
FFWSGF
MOC067-280145-
/O.NEW.KSGF.FF.W.0040.210527T1937Z-210528T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Springfield MO
237 PM CDT Thu May 27 2021

The National Weather Service in Springfield has issued a

* Flash Flood Warning for...
  Douglas County in southwestern Missouri...

* Until 845 PM CDT Thursday.

* At 237 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen over western Douglas County. Additional rainfall 
  amounts of 1 to 3 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...
  Ava, Brushyknob, Squires, Gentryville, Drury, Vanzant, Rome and 
  Goodhope.

This includes the following low water crossings...
  Route U at Bryant Creek northwest of Brushyknob, Route FF at 
  Hunter Creek east of Ava, Route Y at Cowskin Creek 3 miles west of 
  Ava, Route EE at The north Fork Northeast Vanzant and Route FF at 
  Turkey Creek east of Ava.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3706 9209 3679 9210 3681 9291 3707 9290

FLASH FLOOD...RADAR INDICATED

$$

JT

1 follow-up statement

358 
WGUS73 KSGF 280143
FFSSGF

Flash Flood Statement
National Weather Service Springfield MO
843 PM CDT Thu May 27 2021

MOC067-280153-
/O.EXP.KSGF.FF.W.0040.000000T0000Z-210528T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Douglas MO-
843 PM CDT Thu May 27 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 845 PM CDT THIS EVENING FOR 
DOUGLAS COUNTY AND HAS BEEN REPLACED WITH A AREAL FLOOD WARNING...

LAT...LON 3706 9209 3679 9210 3681 9291 3707 9290

$$

MB

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 8:12 PM CDT	River Flood Warning	SGF	Vernon	24 hr
May 27, 3:27 AM CDT	Special Weather Statement	SGF	Vernon	48 min
May 27, 5:11 AM CDT	Special Weather Statement	SGF	Benton	34 min
May 27, 9:45 AM CDT	River Flood Warning	SGF	Cedar	11 hr
May 27, 9:45 AM CDT	River Flood Warning	SGF	Vernon	11 hr
May 27, 10:32 AM CDT	Flash Flood Warning	SGF	Benton, Morgan	4 hr
May 27, 10:53 AM CDT	Flash Flood Watch	SGF	Barry, Barton, Benton, Camden, Cedar, Christian and 19 more	8 hr
May 27, 11:11 AM CDT	Flash Flood Warning	SGF	Jasper, Newton	8 hr
May 27, 11:15 AM CDT	Severe Thunderstorm Warning	SGF	Cedar, Hickory, Polk, St. Clair	45 min
May 27, 11:37 AM CDT	Severe Thunderstorm Warning	SGF	Jasper, Newton	38 min
May 27, 11:45 AM CDT	Severe Thunderstorm Warning	SGF	Cedar, Dade, Dallas, Polk	60 min
May 27, 12:07 PM CDT	Severe Thunderstorm Warning	SGF	Greene, Webster	53 min
May 27, 12:24 PM CDT	Severe Thunderstorm Warning	SGF	Laclede, Pulaski	66 min
May 27, 12:45 PM CDT	Flash Flood Warning	SGF	Barry, Jasper, Lawrence, Newton	6 hr
May 27, 12:52 PM CDT	Severe Thunderstorm Warning	SGF	Webster, Wright	38 min
May 27, 1:07 PM CDT	Flash Flood Warning	SGF	Camden, Christian, Dallas, Greene, Laclede, Polk and 1 more	5 hr
May 27, 1:07 PM CDT	Severe Thunderstorm Warning	SGF	Maries, Phelps	41 min
May 27, 1:19 PM CDT	Severe Thunderstorm Warning	SGF	Laclede, Phelps, Pulaski, Texas, Wright	56 min
May 27, 1:29 PM CDT	Flash Flood Warning Considerable damage threat	SGF	Barry, Lawrence, Newton	6 hr
May 27, 1:31 PM CDT	Severe Thunderstorm Warning	SGF	Jasper, McDonald, Newton	59 min
May 27, 1:35 PM CDT	Special Weather Statement	SGF	Christian, Stone	55 min
May 27, 1:51 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Douglas, Webster, Wright	54 min
May 27, 1:54 PM CDT	Special Weather Statement	SGF	Dent, Texas	51 min
May 27, 2:11 PM CDT	Flash Flood Warning	SGF	Barry, Christian, Stone	6 hr
May 27, 2:25 PM CDT	Severe Thunderstorm Warning	SGF	McDonald, Newton	47 min
May 27, 2:37 PM CDT	Special Weather Statement	SGF	Howell	53 min
May 27, 2:55 PM CDT	Severe Thunderstorm Warning	SGF	Barry	50 min
May 27, 3:02 PM CDT	Severe Thunderstorm Warning	SGF	Howell	43 min
May 27, 3:28 PM CDT	Special Weather Statement	SGF	Oregon, Shannon	62 min
May 27, 3:36 PM CDT	Special Weather Statement	SGF	Christian	39 min
May 27, 3:42 PM CDT	Areal Flood Advisory	SGF	Barry, McDonald	6 hr
May 27, 3:49 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Douglas, Taney	41 min
May 27, 4:09 PM CDT	Severe Thunderstorm Warning	SGF	Ozark, Taney	36 min
May 27, 4:14 PM CDT	Flash Flood Warning	SGF	Barry	6 hr
May 27, 4:31 PM CDT	Flash Flood Warning	SGF	Ozark, Stone, Taney	6 hr
May 27, 5:23 PM CDT	Severe Thunderstorm Warning	SGF	McDonald	47 min
May 27, 5:52 PM CDT	Flash Flood Warning	SGF	McDonald	4 hr
May 27, 6:25 PM CDT	Areal Flood Warning	SGF	Christian, Dallas, Greene, Hickory, Laclede, Polk and 2 more	15 hr
May 27, 6:41 PM CDT	Areal Flood Warning	SGF	Barry, Jasper, Lawrence, Newton	22 hr

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.