Alert archive / Missouri / Flash Flood Warnings in 2017

Flash Flood Warning 22, NWS Kansas City, MO

July 27, 2017Johnson County, Miami County, Kansas; Bates County, Cass County, Henry County, Missouri

NWS Kansas City, MO issued this flash flood warning at Jul 27, 2017, 4:33 AM CDT for Johnson County, Miami County, Kansas; Bates County, Cass County, Henry County, Missouri. It was in force for 4 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
Jul 27, 2017, 4:33 AM CDT (09:33 UTC)
Expired
Jul 27, 2017, 9:00 AM CDT
In force
4 hr
Issued by
NWS Kansas City, MO
Area
Storm-based polygon
Flood severity
None

Counties Johnson County, KS, Miami County, KS, Bates County, MO, Cass County, MO, Henry County, MO

The radar

The Pleasant Hill radar (KEAX), 50 km from the middle of the area, began a volume at 09:37 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

Topeka, KS (KFOE), launched 00:00Z, 9.6 hours before the alert went out and 154 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°0°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.

782 
WGUS53 KEAX 270933
FFWEAX
KSC091-121-MOC013-037-083-271400-
/O.NEW.KEAX.FF.W.0022.170727T0933Z-170727T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

The National Weather Service in Pleasant Hill has issued a

* Flash Flood Warning for...
  Northeastern Miami County in east central Kansas...
  Southern Johnson County in east central Kansas...
  Southern Cass County in west central Missouri...
  Henry County in west central Missouri...
  Northern Bates County in west central Missouri...

* Until 900 AM CDT

* At 431 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Radar estimates rainfall rates 
  of 2 to 3 inches per hour with these storms. This is expected to 
  continue as the storms move to the southeast. Another 2 to 3 
  inches of rain is possible as these storms move through. Flash 
  flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Overland Park, Olathe, Leawood, Gardner, Clinton, Spring Hill,
  Louisburg, Windsor, Adrian, Garden City, Archie, Drexel, Urich,
  Calhoun, Deepwater, Montrose, Creighton, Coal, Brownington and
  Blairstown.

This includes Interstate 35 in Kansas between mile markers 205 and
215.
 
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, country roads, farmland, and other low lying
spots.

&&

LAT...LON 3821 9394 3821 9408 3839 9461 3886 9506
      3885 9461 3857 9461 3856 9351 3821 9352
      3822 9356 3822 9357 3820 9356

$$

CDB

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 26, 9:50 PM CDTFlash Flood WarningEAXWyandotte4 hr
Jul 27, 1:36 AM CDTFlash Flood WarningEAXLeavenworth, Wyandotte7 hr
Jul 27, 2:27 AM CDTFlash Flood WarningEAXJohnson, Leavenworth, Wyandotte6 hr
Jul 27, 2:49 AM CDTRiver Flood WarningEAXJohnson28 hr
Jul 27, 2:49 AM CDTRiver Flood WarningEAXJohnson33 hr
Jul 27, 3:01 AM CDTRiver Flood WarningEAXJohnson27 hr
Jul 27, 4:37 AM CDTRiver Flood WarningEAXJohnson28 hr
Jul 27, 5:51 AM CDTFlash Flood WarningEAXLinn, Miami4 hr
Jul 27, 7:23 AM CDTRiver Flood WarningEAXJohnson34 hr
Jul 27, 7:52 AM CDTFlash Flood WarningEAXLinn3 hr
Jul 27, 8:17 AM CDTFlash Flood WarningEAXJohnson, Leavenworth, Wyandotte3 hr
Jul 27, 8:55 AM CDTAreal Flood WarningEAXMiami5 hr
Jul 27, 9:35 AM CDTAreal Flood WarningEAXLinn, Miami4 hr
Jul 27, 10:55 AM CDTAreal Flood WarningEAXJohnson, Leavenworth, Wyandotte3 hr
Jul 27, 1:43 PM CDTAreal Flood WarningEAXJohnson, Wyandotte9 hr
Jul 27, 1:46 PM CDTAreal Flood WarningEAXLinn, Miami48 hr
Jul 26, 9:13 PM CDTAreal Flood AdvisoryEAXClay, Platte3 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, 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, 4:37 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, 6:30 AM CDTRiver Flood WarningEAXClay, Ray29 hr
Jul 27, 7:23 AM CDTRiver Flood WarningEAXCass, Henry, Johnson3 days
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, 9:19 AM CDTRiver Flood WarningEAXCarroll, Lafayette, Saline62 hr
Jul 27, 9:19 AM CDTRiver Flood WarningEAXCarroll, Chariton, Saline66 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.