Alert archive / Missouri / Flash Flood Warnings in 2021

Flash Flood Warning 14, NWS Springfield, MO

March 17, 20218 counties in Missouri

NWS Springfield, MO issued this flash flood warning at Mar 17, 2021, 7:29 PM CDT for 8 counties in Missouri. It was in force for 4 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: Mar 17, 2021, 7:29 PM CDT (00:29 UTC)
Expired: Mar 17, 2021, 11:21 PM CDT
In force: 4 hr
Issued by: NWS Springfield, MO
Area: Storm-based polygon
Flood severity: None

Counties Barry County, MO, Christian County, MO, Dade County, MO, Greene County, MO, Lawrence County, MO, Polk County, MO, Stone County, MO, Taney County, MO

The radar

The Springfield radar (KSGF), 22 km from the middle of the area, began a volume at 00:33 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
Mar 17, 8:15 PM CDT	FLASH FLOOD	5 S Boaz, MO	WATER WAS REPORTED OVER THE ROAD ON HIGHWAY U AT THE SILVER LAKE BRANCH.

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, 0.5 hours before the alert went out and 33 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: 283 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 461 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 305 m²/s²
0-3 km storm-relative helicity: 351 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.3

Open this sounding in Storm Lab

The text

As transmitted.

839 
WGUS53 KSGF 180029
FFWSGF
MOC009-043-057-077-109-167-209-213-180430-
/O.NEW.KSGF.FF.W.0014.210318T0029Z-210318T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Springfield MO
729 PM CDT Wed Mar 17 2021

The National Weather Service in Springfield has issued a

* Flash Flood Warning for...
  Southeastern Barry County in southwestern Missouri...
  Western Christian County in southwestern Missouri...
  Eastern Dade County in southwestern Missouri...
  Greene County in southwestern Missouri...
  Northeastern Lawrence County in southwestern Missouri...
  Southern Polk County in southwestern Missouri...
  Stone County in southwestern Missouri...
  Western Taney County in southwestern Missouri...

* Until 1130 PM CDT.

* At 729 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 3 inches of rain 
  have fallen. Additional rainfall amounts up to 1 inch 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...
  Springfield, Nixa, Ozark, Republic, Branson, Bolivar, Battlefield 
  and Kimberling City.

This includes the following highways...
	Interstate 44 between mile markers 56 and 82.

This includes the following low water crossings...
  Riverdale Road at Finley Creek, East Buena Vista Road at Ward 
  Branch south of Springfield, Scenic Avenue in southwest 
  Springfield, Route CC at Spring Creek south of Hurley, Farm Road 
  156 at Wilsons Creek southwest of Springfield, Farm Road 146 at 
  Wilsons Creek southwest of Springfield,Farm Road 150 at Wilsons 
  Creek southwest of Springfield and Silver Lake Branch at Highway U 
  in northern Stone County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3753 9386 3757 9368 3757 9362 3759 9362
      3764 9341 3745 9321 3703 9320 3658 9315
      3653 9332 3651 9389 3652 9395 3687 9350
      3699 9361 3707 9365 3719 9366 3725 9371
      3727 9382 3729 9397 3728 9399

FLASH FLOOD...RADAR INDICATED

$$

MMT

1 follow-up statement

218 
WGUS73 KSGF 180421
FFSSGF

Flash Flood Statement
National Weather Service Springfield MO
1121 PM CDT Wed Mar 17 2021

MOC009-043-057-077-109-167-209-213-180431-
/O.CAN.KSGF.FF.W.0014.000000T0000Z-210318T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Barry MO-Christian MO-Dade MO-Greene MO-Lawrence MO-Polk MO-Stone
MO-Taney MO-
1121 PM CDT Wed Mar 17 2021

...FLASH FLOOD WARNING FOR SOUTHEASTERN BARRY, WESTERN CHRISTIAN, 
EASTERN DADE, GREENE, NORTHEASTERN LAWRENCE, SOUTHERN POLK, STONE 
AND WESTERN TANEY COUNTIES HAS BEEN REPLACED WITH A FLOOD WARNING...

Heavy rainfall has ended so rapid water level rises are no longer 
expected. However saturated low lying areas will remain flooded 
through tonight.

LAT...LON 3753 9386 3757 9368 3757 9362 3759 9362
      3764 9341 3745 9321 3703 9320 3658 9315
      3653 9332 3651 9389 3652 9395 3687 9350
      3699 9361 3707 9365 3719 9366 3725 9371
      3727 9382 3729 9397 3728 9399

$$

MMT

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 17, 7:06 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Greene, Webster	54 min
Mar 17, 7:24 PM CDT	Severe Thunderstorm Warning	SGF	Douglas, Webster, Wright	66 min
Mar 17, 7:43 PM CDT	Tornado Warning	SGF	Douglas	32 min
Mar 17, 8:36 PM CDT	Special Weather Statement	SGF	Laclede, Wright	39 min
Mar 17, 9:27 PM CDT	Areal Flood Warning	SGF	McDonald, Newton	8 hr
Mar 17, 10:01 PM CDT	Areal Flood Warning	SGF	Lawrence, Newton	8 hr
Mar 17, 11:19 PM CDT	Areal Flood Warning	SGF	Barry, Lawrence, Stone	7 hr
Mar 17, 11:21 PM CDT	Areal Flood Warning	SGF	Barry, Christian, Dade, Greene, Lawrence, Polk and 2 more	8 hr
Mar 17, 11:28 PM CDT	Areal Flood Warning	SGF	Benton, Cedar, Hickory, St. Clair	8 hr
Mar 18, 12:34 AM CDT	River Flood Warning	SGF	Cedar	47 hr
Mar 18, 9:45 AM CDT	River Flood Warning	SGF	Jasper	37 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.