Alert archive / Kansas / Flash Flood Warnings in 2018

Flash Flood Warning 9, NWS Wichita, KS

September 7, 2018Wilson County, Kansas

NWS Wichita, KS issued this flash flood warning at Sep 7, 2018, 1:07 PM CDT for Wilson County, Kansas. It was in force for 3 hr. 4 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
Sep 7, 2018, 1:07 PM CDT (18:07 UTC)
Expired
Sep 7, 2018, 3:47 PM CDT
In force
3 hr
Issued by
NWS Wichita, KS
Area
Storm-based polygon
Flood severity
None

County Wilson County, KS

The radar

The Tulsa radar (KINX), 150 km from the middle of the area, began a volume at 18:08 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
Sep 7, 2:37 PM CDTFLOODFredonia, KSEMERGENCY MANAGER REPORTS FLOODING IN LOW LYING AREAS ACROSS THE COUNTY. MINOR FLOODING IS OCCURRING IN FREDONIA AND NEODESHA.
Sep 7, 2:40 PM CDTHEAVY RAIN 43 S Benedict, KS
Sep 7, 2:41 PM CDTFLOODFredonia, KSSEVERAL ROADS BARRICADED ACROSS THE COUNTY.
Sep 7, 2:41 PM CDTFLASH FLOODFredonia, KSSEVERAL ROADS BARRICADED ACROSS THE COUNTY.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Topeka, KS (KFOE), launched 12:00Z, 6.1 hours before the alert went out and 164 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, Topeka, KS at 12:00Z on 2018-09-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 125 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, Topeka, KS at 12:00Z on 2018-09-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 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
125 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
537 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
28 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

472 
WGUS53 KICT 071807
FFWICT
KSC205-072200-
/O.NEW.KICT.FF.W.0009.180907T1807Z-180907T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Wichita KS
107 PM CDT FRI SEP 7 2018

The National Weather Service in Wichita has issued a

* Flash Flood Warning for...
  Wilson County in southeastern Kansas...

* Until 500 PM CDT.

* At 106 PM CDT, Doppler radar indicated heavy rain across the 
  warned area. Up to four inches of rain have already fallen in the 
  northwestern part of the county. Flash flooding is expected to 
  begin shortly.

* Some locations that will experience flooding include...
  Neodesha, Fredonia, Altoona, Buffalo, Benedict, New Albany,
  Coyville and Buxton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3738 9553 3739 9596 3773 9596 3773 9553

$$

PEARCE
1 follow-up statement
112 
WGUS73 KICT 072047
FFSICT

Flash Flood Statement
National Weather Service Wichita KS
347 PM CDT FRI SEP 7 2018

KSC205-072056-
/O.CAN.KICT.FF.W.0009.000000T0000Z-180907T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Wilson KS-
347 PM CDT FRI SEP 7 2018

...THE FLASH FLOOD WARNING FOR WILSON COUNTY IS CANCELLED...

Flash flooding is no longer expected to pose a threat. This warning 
will be replaced with a Flood Warning due to road closures across 
the county. Please continue to heed any remaining road closures.

LAT...LON 3738 9553 3739 9596 3773 9596 3773 9553

$$

PEARCE

The office that day

Everything else NWS Wichita, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 7, 8:59 AM CDTAreal Flood WarningICTButler4 hr
Sep 7, 10:16 AM CDTAreal Flood WarningICTWoodson4 hr
Sep 7, 1:37 PM CDTAreal Flood WarningICTAllen, Neosho4 hr
Sep 7, 2:10 PM CDTAreal Flood WarningICTWoodson22 hr
Sep 7, 3:45 PM CDTRiver Flood WarningICTWilson17 hr
Sep 7, 3:49 PM CDTAreal Flood WarningICTWilson22 hr
Sep 7, 5:25 PM CDTAreal Flood WarningICTAllen, Neosho18 hr

Nearby

Flash Flood Warnings in Kansas, 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.