Alert archive / Missouri / Flash Flood Warnings in 2017

Flash Flood Warning 28, NWS Kansas City, MO

August 5, 2017Cass County, Jackson County, Missouri; Johnson County, Kansas

NWS Kansas City, MO issued this flash flood warning at Aug 5, 2017, 9:00 PM CDT for Cass County, Jackson County, Missouri; Johnson County, Kansas. It was in force for 7 hr. 13 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 5, 2017, 9:00 PM CDT (02:00 UTC)
Expired
Aug 6, 2017, 4:00 AM CDT
In force
7 hr
Issued by
NWS Kansas City, MO
Area
Storm-based polygon
Flood severity
None

Counties Johnson County, KS, Cass County, MO, Jackson County, MO

The radar

The Pleasant Hill radar (KEAX), 25 km from the middle of the area, began a volume at 02:02 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 5, 10:34 PM CDTFLASH FLOOD2 Wnw Unity Village, MOKCMO FIRE RESPONDING TO WATER RESCUE, REPORT OF VEHICLE FLOATING IN WATER. REPORTED AT 13105 BLUE PARKWAY.
Aug 5, 10:35 PM CDTFLASH FLOOD3 Sw Merriam, KSPOLICE BLOCKING OFF QUIVIRA RD NEAR 73RD ST DUE TO HIGH WATER.
Aug 5, 10:37 PM CDTFLASH FLOOD1 S De Soto, KSSTANDING WATER AT SEVERAL INTERSECTIONS NEAR DOWNTOWN DE SOTO.
Aug 5, 10:37 PM CDTHEAVY RAIN 3.251 S De Soto, KS3.25 INCHES MEASURED OVER PREVIOUS 2.5 HOURS.
Aug 5, 10:44 PM CDTFLASH FLOODMission Woods, KSWATER RUSHING OVER THE ROAD BEHIND THE PEMBROKE HILL SCHOOL.
Aug 5, 10:45 PM CDTFLASH FLOOD1 Wnw Roeland Park, KSBROADCAST MEDIA RELAYING FROM KHP THAT I-35 SB AT LAMAR AVE BEING CLOSED DUE TO FLOODING.
Aug 5, 10:45 PM CDTFLASH FLOOD1 Wnw Roeland Park, KSBROADCAST MEDIA RELAYING FROM KHP THAT I-35 SB AT LAMAR AVE BEING CLOSED DUE TO FLOODING. **UPDATE** KCKFD REPORTED MULTIPLE WATER RESCUES OCCURRING IN AND AROUND THIS AREA.
Aug 5, 10:45 PM CDTFLASH FLOOD1 Wnw Roeland Park, KSBROADCAST MEDIA RELAYING FROM KHP THAT I-35 SB AT LAMAR AVE BEING CLOSED DUE TO FLOODING. **UPDATE** KCKFD REPORTED MULTIPLE WATER RESCUES OCCURRING IN AND AROUND THIS AREA, INCLUDING ONE WITH THREE PEOPLE INSIDE OF A VEHICLE REPORTED FLOATING DOWN THE INTERST
Aug 5, 11:10 PM CDTFLASH FLOOD1 Nne Merriam, KSKANSAS HIGHWAY PATROL SHUT DOWN NORTHBOUND I-35 AT ANTIOCH RD. PER JOHNSON COUNTY SHERIFF.
Aug 6, 12:49 AM CDTFLASH FLOOD3 Wsw Raytown, MOROAD CLOSED AT OLDHAM AND HILLCREST IN SWOPE PARK DUE TO FLOODING. BLUE RIVER EXPECTED 2' OVER ROADWAY.
Aug 6, 1:00 AM CDTHEAVY RAIN 4.751 N Pleasant Hill, MO24-HOUR RAINFALL TOTAL AT NWS PLEASANT HILL.
Aug 6, 2:00 AM CDTHEAVY RAIN 5.364 N Grandview, MO24-HOUR RAINFALL TOTAL VIA STORMWATCH. RAINFALL RATES EXCEEDED 2 INCHES. LOCATION NEAR GRANDVIEW TRIANGLE.
Aug 6, 2:00 AM CDTHEAVY RAIN 6.231 Ne Merriam, KS24-HOUR RAINFALL TOTAL VIA STORMWATCH. RAINFALL RATES EXCEEDED 2 INCHES PER HOUR DURING SATURDAY EVENING.

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, 2.0 hours before the alert went out and 218 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 2017-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2017-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 324 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
992 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
324 m²/s²
0-3 km storm-relative helicity
495 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.5

Open this sounding in Storm Lab

The text

As transmitted.

130 
WGUS53 KEAX 060200
FFWEAX
KSC091-MOC037-095-060900-
/O.NEW.KEAX.FF.W.0028.170806T0200Z-170806T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Kansas City/Pleasant Hill MO
900 PM CDT SAT AUG 5 2017

The National Weather Service in Pleasant Hill has issued a

* Flash Flood Warning for...
  Johnson County in east central Kansas...
  Cass County in west central Missouri...
  Southern Jackson County in west central Missouri...

* Until 400 AM CDT Sunday

* At 857 PM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to two inches of rain have 
  already fallen across northern Johnson and southern Jackson 
  Counties. Southern Johnson County and Cass Counties will likely 
  see an additional two to four inches of rain in addition to the 
  one to two inches of rain that has already fallen across that 
  area. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Kansas City, Overland Park, Olathe, Lee's Summit, Shawnee, Lenexa,
  Leawood, Raytown, Grandview, Belton, Prairie Village, Raymore,
  Gardner, Merriam, Harrisonville, Mission, Pleasant Hill, Bonner
  Springs, De Soto and Spring Hill.

This includes the following highways...
 Interstate 35 in Kansas between mile markers 202 and 231.
 Interstate 635 near mile marker 0.
 Interstate 470 between mile markers 0 and 12.
 Interstate 435 between mile markers 0 and 7, and between mile
markers 66 and 83.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3847 9431 3848 9461 3874 9461 3874 9506
      3898 9506 3897 9504 3900 9502 3898 9492
      3906 9487 3904 9480 3905 9460 3903 9460
      3893 9411 3866 9413 3857 9412 3856 9407
      3845 9407 3844 9420

$$

Leighton

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 7:14 PM CDTAreal Flood AdvisoryEAXClay, Jackson, Lafayette, Ray4 hr
Aug 5, 8:01 PM CDTFlash Flood WarningEAXClay, Jackson, Lafayette, Platte, Ray6 hr
Aug 5, 8:16 PM CDTFlash Flood WarningEAXJohnson, Pettis6 hr
Aug 5, 8:35 PM CDTAreal Flood AdvisoryEAXBuchanan, Clay, Clinton, Platte3 hr
Aug 5, 9:07 PM CDTSpecial Weather StatementEAXJackson38 min
Aug 5, 9:11 PM CDTRiver Flood WarningEAXRay53 hr
Aug 5, 9:21 PM CDTRiver Flood WarningEAXJackson43 hr
Aug 5, 9:23 PM CDTRiver Flood WarningEAXCarroll, Lafayette, Saline3 days
Aug 5, 9:23 PM CDTRiver Flood WarningEAXCarroll, Chariton, Saline3 days
Aug 5, 9:49 PM CDTSpecial Weather StatementEAXJackson41 min
Aug 5, 10:24 PM CDTRiver Flood WarningEAXJackson28 hr
Aug 5, 10:44 PM CDTFlash Flood WarningEAXHenry4 hr
Aug 5, 10:53 PM CDTRiver Flood WarningEAXJackson31 hr
Aug 5, 10:59 PM CDTRiver Flood WarningEAXJackson25 hr
Aug 5, 11:57 PM CDTRiver Flood WarningEAXJackson27 hr
Aug 6, 1:55 AM CDTAreal Flood WarningEAXCass, Clay, Henry, Jackson, Johnson, Lafayette and 3 more60 hr
Aug 5, 9:21 PM CDTRiver Flood WarningEAXAtchison, Leavenworth50 hr
Aug 5, 9:21 PM CDTRiver Flood WarningEAXLeavenworth49 hr
Aug 5, 10:53 PM CDTRiver Flood WarningEAXJohnson28 hr

Nearby

Flash Flood Warnings in Missouri, 2017Flash Flood Warnings in Kansas, 2017Every flash flood warning in 2017

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.