Alert archive / Missouri / Flash Flood Warnings in 2017

Flash Flood Warning 19, NWS Kansas City, MO

July 27, 2017Clay County, Jackson County, Platte County, Missouri; Leavenworth County, Wyandotte County, Kansas

NWS Kansas City, MO issued this flash flood warning at Jul 27, 2017, 1:36 AM CDT for Clay County, Jackson County, Platte County, Missouri; Leavenworth County, Wyandotte County, Kansas. It was in force for 7 hr. 2 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
Jul 27, 2017, 1:36 AM CDT (06:36 UTC)
Expired
Jul 27, 2017, 8:30 AM CDT
In force
7 hr
Issued by
NWS Kansas City, MO
Area
Storm-based polygon
Flood severity
None

Counties Leavenworth County, KS, Wyandotte County, KS, Clay County, MO, Jackson County, MO, Platte County, MO

The radar

The Pleasant Hill radar (KEAX), 56 km from the middle of the area, began a volume at 06:36 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
Jul 27, 2:29 AM CDTFLASH FLOOD2 E Kansas City, MOWATER RESCUE AT 12TH AND JACKSON. 2 OCCUPANTS IN VEHICLE.
Jul 27, 5:45 AM CDTFLASH FLOOD1 Ese Levasy, MOUS 24 CLOSED AT JACKSON LAFAYETTE COUNTY LINE DUE TO FLOODING.

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 00:00Z, 6.6 hours before the alert went out and 97 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 00:00Z on 2017-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 787 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 00:00Z on 2017-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 172 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
787 J/kg
Mixed-layer CIN
-157 J/kg
Mixed-layer LCL
1122 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
172 m²/s²
0-3 km storm-relative helicity
464 m²/s²
Significant tornado parameter
0.3
Supercell composite
3.6

Open this sounding in Storm Lab

The text

As transmitted.

603 
WGUS53 KEAX 270636
FFWEAX
KSC103-209-MOC047-095-165-271330-
/O.NEW.KEAX.FF.W.0019.170727T0636Z-170727T1330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Kansas City/Pleasant Hill MO
136 AM CDT THU JUL 27 2017

The National Weather Service in Pleasant Hill has issued a

* Flash Flood Warning for...
  Northern Wyandotte County in northeastern Kansas...
  Northern Leavenworth County in northeastern Kansas...
  Clay County in west central Missouri...
  Platte County in west central Missouri...
  Central Jackson County in west central Missouri...

* Until 830 AM CDT Thursday

* At 133 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Areas just north of downtown 
  Kansas City saw close to 6 inches of rain from a previous round of 
  storms. Additional rainfall amounts of 2 to 4 inches are possible 
  through the night. Flash flooding is occurring or expected to 
  begin shortly. This warning replaces the flash flood warning that 
  was already in effect for this area.

* Some locations that will experience flooding include...
  Kansas City, Independence, Lee's Summit, Blue Springs, Leavenworth,
  Liberty, Gladstone, Grain Valley, Lansing, Excelsior Springs,
  Smithville, Kearney, Oak Grove, Parkville, Platte City, North
  Kansas City, Sugar Creek, Buckner, Riverside and Weatherby Lake.

This includes the following highways...
 Interstate 70 in Missouri between mile markers 0 and 29.
 Interstate 70 in Kansas between mile markers 422 and 423.
 Interstate 35 in Missouri between mile markers 2 and 26.
 Interstate 29 between mile markers 0 and 27.
 Interstate 635 between mile markers 5 and 12.
 Interstate 470 between mile markers 15 and 16.
 Interstate 435 between mile markers 15 and 62.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

&&

LAT...LON 3942 9497 3950 9487 3934 9421 3921 9421
      3921 9417 3918 9419 3914 9410 3892 9411
      3909 9460 3920 9517 3942 9518

$$

CDB
2 follow-up statements
743 
WGUS73 KEAX 270829
FFSEAX

Flash Flood Statement
National Weather Service Kansas City/Pleasant Hill MO
329 AM CDT THU JUL 27 2017

KSC103-209-MOC047-095-165-271330-
/O.CON.KEAX.FF.W.0019.000000T0000Z-170727T1330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Wyandotte KS-Leavenworth KS-Clay MO-Platte MO-Jackson MO-
329 AM CDT THU JUL 27 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 AM CDT FOR
NORTHERN WYANDOTTE...NORTHERN LEAVENWORTH...CLAY...PLATTE AND CENTRAL
JACKSON COUNTIES...

At 326 AM CDT, Doppler radar and automated rain gauges indicate that 
as much as 7 inches of rain has fallen just north of downtown Kansas 
City as well as much of northeastern Jackson County including the 
Buckner and Levasy areas. The heaviest rain has moved out of the 
warning area but excessive runoff will continue to lead to flash 
flooding throughout the warned area.

Some locations that will experience flooding include...
Kansas City, Independence, Lee's Summit, Blue Springs, Leavenworth,
Liberty, Gladstone, Grain Valley, Lansing, Excelsior Springs,
Smithville, Kearney, Oak Grove, Parkville, Platte City, North Kansas
City, Sugar Creek, Buckner, Riverside and Weatherby Lake.

This includes the following highways... Interstate 70 in Missouri 
between mile markers 0 and 29.
 Interstate 70 in Kansas between mile markers 422 and 423.
 Interstate 35 in Missouri between mile markers 2 and 26.
 Interstate 29 between mile markers 0 and 27.
 Interstate 635 between mile markers 5 and 12.
 Interstate 470 between mile markers 15 and 16.
 Interstate 435 between mile markers 15 and 62.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

&&

LAT...LON 3942 9497 3950 9487 3934 9421 3921 9421
      3921 9417 3918 9419 3914 9410 3892 9411
      3909 9460 3920 9517 3942 9518

$$

CDB
772 
WGUS73 KEAX 271114
FFSEAX

Flash Flood Statement
National Weather Service Kansas City/Pleasant Hill MO
614 AM CDT THU JUL 27 2017

KSC103-209-MOC047-095-165-271330-
/O.CON.KEAX.FF.W.0019.000000T0000Z-170727T1330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Wyandotte KS-Leavenworth KS-Clay MO-Platte MO-Jackson MO-
614 AM CDT THU JUL 27 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 AM CDT FOR
NORTHERN WYANDOTTE...NORTHERN LEAVENWORTH...CLAY...PLATTE AND CENTRAL
JACKSON COUNTIES...

At 612 AM CDT, Flash flooding is occurring. Do not drive into flood 
waters. Radar estimates and rain gauges show between 3 and 6 inches 
of rain fell across the warned area. The rain has ended but flash 
flooding is ongoing.

Some locations that will experience flooding include...
Kansas City, Independence, Lee's Summit, Blue Springs, Leavenworth,
Liberty, Gladstone, Grain Valley, Lansing, Excelsior Springs,
Smithville, Kearney, Oak Grove, Parkville, Platte City, North Kansas
City, Sugar Creek, Buckner, Riverside and Weatherby Lake.

This includes the following highways...
 Interstate 70 in Missouri between mile markers 0 and 29.
 Interstate 70 in Kansas between mile markers 422 and 423.
 Interstate 35 in Missouri between mile markers 2 and 26.
 Interstate 29 between mile markers 0 and 27.
 Interstate 635 between mile markers 5 and 12.
 Interstate 470 between mile markers 15 and 16.
 Interstate 435 between mile markers 15 and 62.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

&&

LAT...LON 3942 9497 3950 9487 3934 9421 3921 9421
      3921 9417 3918 9419 3914 9410 3892 9411
      3909 9460 3920 9517 3942 9518

$$

CDB

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 26, 9:13 PM CDTAreal Flood AdvisoryEAXClay, Platte3 hr
Jul 26, 9:50 PM CDTFlash Flood WarningEAXClay, Jackson, Platte4 hr
Jul 26, 11:01 PM CDTFlash Flood WarningEAXClay, Jackson, Ray3 hr
Jul 27, 1:09 AM CDTSpecial Weather StatementEAXPettis51 min
Jul 27, 1:32 AM CDTFlash Flood WarningEAXJohnson, Lafayette, Pettis, Ray, Saline7 hr
Jul 27, 2:27 AM CDTFlash Flood WarningEAXJackson6 hr
Jul 27, 2:49 AM CDTRiver Flood WarningEAXJackson28 hr
Jul 27, 2:49 AM CDTRiver Flood WarningEAXJackson33 hr
Jul 27, 3:11 AM CDTFlash Flood WarningEAXCass, Johnson6 hr
Jul 27, 3:37 AM CDTRiver Flood WarningEAXJackson25 hr
Jul 27, 3:39 AM CDTRiver Flood WarningEAXJohnson, Pettis53 hr
Jul 27, 3:39 AM CDTRiver Flood WarningEAXCooper, Saline6 days
Jul 27, 4:33 AM CDTFlash Flood WarningEAXBates, Cass, Henry4 hr
Jul 27, 4:37 AM CDTRiver Flood WarningEAXJackson28 hr
Jul 27, 4:37 AM CDTRiver Flood WarningEAXJackson30 hr
Jul 27, 4:54 AM CDTRiver Flood WarningEAXJackson36 hr
Jul 27, 5:37 AM CDTRiver Flood WarningEAXClay, Platte27 hr
Jul 27, 5:51 AM CDTFlash Flood WarningEAXBates4 hr
Jul 27, 6:30 AM CDTRiver Flood WarningEAXClay, Ray29 hr
Jul 27, 7:23 AM CDTRiver Flood WarningEAXCass, Henry, Johnson3 days
Jul 27, 7:23 AM CDTRiver Flood WarningEAXJackson34 hr
Jul 27, 7:41 AM CDTRiver Flood WarningEAXJackson34 hr
Jul 27, 7:41 AM CDTRiver Flood WarningEAXJackson34 hr
Jul 27, 7:41 AM CDTRiver Flood WarningEAXJackson17 hr
Jul 27, 7:41 AM CDTRiver Flood WarningEAXJackson37 hr
Jul 27, 7:41 AM CDTRiver Flood WarningEAXJackson37 hr
Jul 27, 7:54 AM CDTRiver Flood WarningEAXBates, Cass, Henry4 days
Jul 27, 8:17 AM CDTFlash Flood WarningEAXClay, Jackson, Johnson, Lafayette, Platte, Ray3 hr
Jul 27, 8:55 AM CDTAreal Flood WarningEAXBates, Cass, Johnson5 hr
Jul 27, 9:19 AM CDTRiver Flood WarningEAXCarroll, Lafayette, Saline62 hr
Jul 27, 9:19 AM CDTRiver Flood WarningEAXCarroll, Chariton, Saline66 hr
Jul 27, 9:35 AM CDTAreal Flood WarningEAXBates4 hr
Jul 27, 10:55 AM CDTAreal Flood WarningEAXCass, Clay, Jackson, Johnson, Lafayette, Platte and 1 more3 hr
Jul 27, 1:43 PM CDTAreal Flood WarningEAXClay, Jackson, Platte9 hr
Jul 27, 1:46 PM CDTAreal Flood WarningEAXBates, Cass, Johnson, Lafayette, Ray48 hr
Jul 27, 3:01 AM CDTRiver Flood WarningEAXJohnson27 hr
Jul 27, 7:52 AM CDTFlash Flood WarningEAXLinn3 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.