Alert archive / Missouri / Flash Flood Warnings in 2018

Flash Flood Warning 9, NWS Springfield, MO

May 20, 2018Taney County, Missouri

NWS Springfield, MO issued this flash flood warning at May 20, 2018, 7:43 PM CDT for Taney 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 20, 2018, 7:43 PM CDT (00:43 UTC)
Expired
May 21, 2018, 1:45 AM CDT
In force
6 hr
Issued by
NWS Springfield, MO
Area
Storm-based polygon
Flood severity
None

County Taney County, MO

The radar

The Springfield radar (KSGF), 83 km from the middle of the area, began a volume at 00:45 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 00:00Z, 0.7 hours before the alert went out and 87 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 00:00Z on 2018-05-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1752 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2018-05-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 square meters per square second.193958Sfc1 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
1752 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
917 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
55 m²/s²
0-3 km storm-relative helicity
109 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

539 
WGUS53 KSGF 210043
FFWSGF
MOC213-210645-
/O.NEW.KSGF.FF.W.0009.180521T0043Z-180521T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Springfield MO
743 PM CDT SUN MAY 20 2018

The National Weather Service in Springfield has issued a

* Flash Flood Warning for...
  Southeastern Taney County in southwestern Missouri...

* Until 145 AM CDT Monday

* At 742 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Up to two to three inches of 
  rain has already fallen across portions of the warned area this 
  evening. 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...
  Protem...                         Rueter...

This warning includes but is not limited to the following low water
crossings...
Highway 125 at Shoal Creek south of Protem.

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.

&&

LAT...LON 3666 9306 3669 9277 3663 9276 3662 9277
      3650 9277 3650 9308

$$

Wise
1 follow-up statement
670 
WGUS73 KSGF 210244
FFSSGF

Flash Flood Statement
National Weather Service Springfield MO
944 PM CDT SUN MAY 20 2018

MOC213-210645-
/O.CON.KSGF.FF.W.0009.000000T0000Z-180521T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Taney MO-
944 PM CDT SUN MAY 20 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 AM CDT FOR
SOUTHEASTERN TANEY COUNTY...

At 942 PM CDT, Doppler radar indicated that rain had ended across 
the warned area. Up to three inches of rain has fallen. Runoff from 
this excessive rainfall will likely lead to flash flooding.

This warning includes but is not limited to the following low water
crossings...
Highway 125 at Shoal Creek south of Protem.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3666 9306 3669 9277 3663 9276 3662 9277
      3650 9277 3650 9308

$$

Foster

The office that day

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

IssuedProductOfficeCountiesLasted
May 20, 7:06 PM CDTSevere Thunderstorm WarningSGFWebster, Wright39 min
May 20, 7:22 PM CDTSpecial Weather StatementSGFMiller, Pulaski53 min
May 20, 7:24 PM CDTSpecial Weather StatementSGFDouglas, Ozark66 min
May 20, 7:40 PM CDTSevere Thunderstorm WarningSGFMaries, Miller, Pulaski65 min
May 20, 7:54 PM CDTSpecial Weather StatementSGFWright51 min
May 20, 8:33 PM CDTSpecial Weather StatementSGFDent, Phelps, Texas57 min
May 20, 8:49 PM CDTSevere Thunderstorm WarningSGFDent, Phelps, Pulaski, Texas56 min
May 20, 9:11 PM CDTAreal Flood AdvisorySGFBenton, Camden, Dallas, Dent, Douglas, Laclede and 7 more12 hr
May 20, 9:37 PM CDTRiver Flood WarningSGFPulaski10 hr
May 20, 9:47 PM CDTFlash Flood WarningSGFDent, Shannon, Texas6 hr
May 20, 11:07 PM CDTAreal Flood WarningSGFMaries, Phelps11 hr
May 21, 1:35 AM CDTAreal Flood WarningSGFTaney6 hr
May 21, 3:42 AM CDTAreal Flood WarningSGFDent, Douglas, Howell, Shannon, Texas, Wright6 hr
May 21, 9:17 AM CDTAreal Flood AdvisorySGFDent, Douglas, Howell, Maries, Phelps, Shannon and 2 more12 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.