Alert archive / Missouri / Flash Flood Warnings in 2018

Flash Flood Warning 33, NWS Springfield, MO

August 29, 20184 counties in Missouri

NWS Springfield, MO issued this flash flood warning at Aug 29, 2018, 10:05 AM CDT for 4 counties in Missouri. It was in force for 6 hr. 8 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
Aug 29, 2018, 10:05 AM CDT (15:05 UTC)
Expired
Aug 29, 2018, 4:00 PM CDT
In force
6 hr
Issued by
NWS Springfield, MO
Area
Storm-based polygon
Flood severity
None

Counties Christian County, MO, Douglas County, MO, Webster County, MO, Wright County, MO

The radar

The Springfield radar (KSGF), 50 km from the middle of the area, began a volume at 15:09 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

TimeReportWhereRemark
Aug 29, 10:09 AM CDTHEAVY RAIN 35 Ne Odin, MOREPORT OF 3 INCHES OF RAIN NW OF HARTVILLE ON HWY F. STORM TOTAL.
Aug 29, 10:14 AM CDTFLASH FLOOD1 Nnw Oldfield, MOROAD CLOSED DUE TO FLOODING MO-125 NORTHBOUND (CHRISTIAN COUNTY).
Aug 29, 10:14 AM CDTFLASH FLOOD5 N Seymour, MOROAD CLOSED DUE TO FLOODING ROUTE C SOUTHBOUND (WEBSTER COUNTY).
Aug 29, 10:35 AM CDTHEAVY RAIN 1.681 E Sparta, MOVIEWER REPORT 1.68 INCHES OF RAIN IN AN HOUR, JENKINS ROAD, SPARTA.
Aug 29, 11:23 AM CDTHEAVY RAIN 3.5Diggins, MOVIEWER REPORT , 3.5 INCHES IN DIGGINS, MO.
Aug 29, 1:00 PM CDTFLASH FLOODHartville, MOA FEW OF THE COUNTRY ROADS AROUND HARTVILLE, MO ARE IMPASSIBLE DUE TO WATER OVER THE ROADWAYS. TIME ESTIMATED FROM RADAR.
Aug 29, 3:30 PM CDTFLASH FLOOD4 Wnw Ava, MOROAD CLOSED DUE TO FLOODING ON ROUTE Y WESTBOUND AND EASTBOUND AT THE COWSKIN CREEK CROSSING (DOUGLAS COUNTY).
Aug 29, 3:30 PM CDTFLASH FLOOD5 Ne Mansfield, MOROAD CLOSED DUE TO FLOODING ON HIGHWAY AB WESTBOUND AND EASTBOUND AT THE WOLF CREEK CROSSING (WRIGHT 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, 3.1 hours before the alert went out and 88 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-pSkew-T log-p diagram, Springfield, MO at 12:00Z on 2018-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1738 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 2018-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 242 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1738 J/kg
Mixed-layer CIN
-51 J/kg
Mixed-layer LCL
871 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
242 m²/s²
0-3 km storm-relative helicity
268 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.0

Open this sounding in Storm Lab

The text

As transmitted.

742 
WGUS53 KSGF 291505
FFWSGF
MOC043-067-225-229-292100-
/O.NEW.KSGF.FF.W.0033.180829T1505Z-180829T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Springfield MO
1005 AM CDT WED AUG 29 2018

The National Weather Service in Springfield has issued a

* Flash Flood Warning for...
  Southern Webster County in southwestern Missouri...
  Northwestern Douglas County in southwestern Missouri...
  Wright County in southwestern Missouri...
  Northeastern Christian County in southwestern Missouri...

* Until 400 PM CDT.

* At 1004 AM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to three inches of rain have
  already fallen. Flash flooding is expected to begin shortly.

* Creeks, streams, and low water crossings will be especially
  susceptible to the dangers of flash flooding.
  Locations in the warning include...
  Mountain Grove...                 Rogersville...
  Ava...                            Seymour...
  Sparta...                         Mansfield...
  Fordland...                       Dawson...
  Norwood...                        Hartville...
  Duncan...                         Diggins...
  Oldfield...                       Manes...
  Elkhead...                        Bruner...
  Graff...                          Keltner...
  Chadwick...                       Goodhope...

This warning includes but is not limited to the following low water
crossings...
Route E north of Highway 38 at The Gasconade River...
Route U at Pedelo Creek northeast of Sparta...
Route Y at Cowskin Creek 3 miles west of Ava...
Route A just south of Marshfield...
and Route Z at Finley Creek 3 miles southeast of Fordland.

Additional rainfall amounts of more than one inch are possible in 
the warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

Please report flooding to your local law enforcement agency when you
can do so safely.

&&

LAT...LON 3690 9312 3709 9308 3709 9306 3718 9307
      3726 9305 3738 9269 3747 9226 3714 9225
      3690 9278

$$

Hatch
2 follow-up statements
535 
WGUS73 KSGF 291609
FFSSGF

Flash Flood Statement
National Weather Service Springfield MO
1109 AM CDT WED AUG 29 2018

MOC043-067-225-229-292100-
/O.CON.KSGF.FF.W.0033.000000T0000Z-180829T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Webster MO-Douglas MO-Wright MO-Christian MO-
1109 AM CDT WED AUG 29 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 400 PM CDT FOR
SOUTHERN WEBSTER...NORTHWESTERN DOUGLAS...WRIGHT AND NORTHEASTERN
CHRISTIAN COUNTIES...

At 1105 AM CDT, The Department of Transportation reported heavy rain 
from thunderstorms over the warned area. In excess of three inches 
of rain have already fallen across portions of the warned area. 
Flash flooding is expected to begin shortly.

This warning includes but is not limited to the following low water
crossings...
Route E north of Highway 38 at The Gasconade River...
Route U at Pedelo Creek northeast of Sparta...
Route Y at Cowskin Creek 3 miles west of Ava...
Route A just south of Marshfield...
and Route Z at Finley Creek 3 miles southeast of Fordland.

Additional rainfall amounts of around and inch are possible in the 
warned area. At 1030 am the media relayed a report that 1.68 inches 
of rain fell in one hour near Sparta. The Missouri Department of 
Transportation also reported that Highways 125 and C were closed due 
to flooding.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

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

&&

LAT...LON 3690 9312 3709 9308 3709 9306 3718 9307
      3726 9305 3738 9269 3747 9226 3714 9225
      3690 9278

$$

Hatch
802 
WGUS73 KSGF 292051
FFSSGF

Flash Flood Statement
National Weather Service Springfield MO
351 PM CDT WED AUG 29 2018

MOC043-067-225-229-292100-
/O.EXP.KSGF.FF.W.0033.000000T0000Z-180829T2100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Webster MO-Douglas MO-Wright MO-Christian MO-
351 PM CDT WED AUG 29 2018

...THE FLASH FLOOD WARNING FOR SOUTHERN WEBSTER...NORTHWESTERN
DOUGLAS...WRIGHT AND NORTHEASTERN CHRISTIAN COUNTIES WILL EXPIRE AT
400 PM CDT...

The heavy rain has ended. Flash flooding is no longer expected to
pose a threat to life or property. Please continue to heed any
remaining road closures.

LAT...LON 3690 9312 3709 9308 3709 9306 3718 9307
      3726 9305 3738 9269 3747 9226 3714 9225
      3690 9278

$$

Hatch

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 7:16 AM CDTSpecial Weather StatementSGFCamden29 min
Aug 29, 8:27 AM CDTSpecial Weather StatementSGFCamden48 min
Aug 29, 8:53 AM CDTAreal Flood AdvisorySGFCamden, Maries, Miller, Morgan, Phelps6 hr
Aug 29, 8:59 AM CDTSpecial Weather StatementSGFChristian46 min
Aug 29, 9:26 AM CDTAreal Flood AdvisorySGFChristian, Dent, Douglas, Laclede, Texas, Webster and 1 more6 hr
Aug 29, 9:33 AM CDTFlash Flood WarningSGFMaries, Miller, Phelps6 hr
Aug 29, 9:50 AM CDTAreal Flood AdvisorySGFDent, Phelps, Pulaski6 hr
Aug 29, 10:10 AM CDTSpecial Weather StatementSGFTaney50 min
Aug 29, 10:17 AM CDTFlash Flood WarningSGFDent, Phelps, Pulaski, Texas6 hr
Aug 29, 10:58 AM CDTFlash Flood WarningSGFCamden, Miller, Morgan5 hr
Aug 29, 11:38 AM CDTAreal Flood AdvisorySGFOzark, Taney6 hr
Aug 29, 3:50 PM CDTAreal Flood WarningSGFDouglas, Webster, Wright6 hr
Aug 29, 4:00 PM CDTAreal Flood WarningSGFDent, Phelps, Pulaski, Texas12 hr
Aug 29, 6:15 PM CDTRiver Flood WarningSGFPulaski15 hr

Nearby

Flash Flood Warnings in Missouri, 2018Every flash flood warning in 2018

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.