Alert archive / Kansas / Flash Flood Warnings in 2017

Flash Flood Warning 24, NWS Kansas City, MO

July 27, 2017Linn County, Kansas

NWS Kansas City, MO issued this flash flood warning at Jul 27, 2017, 7:52 AM CDT for Linn County, Kansas. It was in force for 3 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, 7:52 AM CDT (12:52 UTC)
Expired: Jul 27, 2017, 10:45 AM CDT
In force: 3 hr
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Flood severity: None

County Linn County, KS

The radar

The Pleasant Hill radar (KEAX), 95 km from the middle of the area, began a volume at 12:51 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 12:00Z, 0.9 hours before the alert went out and 103 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 149 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 638 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: -23 m²/s²
0-3 km storm-relative helicity: 74 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

931 
WGUS53 KEAX 271252
FFWEAX
KSC107-271545-
/O.NEW.KEAX.FF.W.0024.170727T1252Z-170727T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

The National Weather Service in Pleasant Hill has issued a

* Flash Flood Warning for...
  Western Linn County in east central Kansas...

* Until 1045 AM CDT

* At 751 AM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to three inches of rain have
  already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Parker and Blue Mound. 

Additional rainfall amounts of 1-2 inches are possible in the warned 
area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3804 9507 3821 9508 3825 9507 3826 9506
      3839 9506 3839 9497 3804 9488

$$

Barham

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 9:50 PM CDT	Flash Flood Warning	EAX	Wyandotte	4 hr
Jul 27, 1:36 AM CDT	Flash Flood Warning	EAX	Leavenworth, Wyandotte	7 hr
Jul 27, 2:27 AM CDT	Flash Flood Warning	EAX	Johnson, Leavenworth, Wyandotte	6 hr
Jul 27, 2:49 AM CDT	River Flood Warning	EAX	Johnson	28 hr
Jul 27, 2:49 AM CDT	River Flood Warning	EAX	Johnson	33 hr
Jul 27, 3:01 AM CDT	River Flood Warning	EAX	Johnson	27 hr
Jul 27, 4:33 AM CDT	Flash Flood Warning	EAX	Johnson, Miami	4 hr
Jul 27, 4:37 AM CDT	River Flood Warning	EAX	Johnson	28 hr
Jul 27, 5:51 AM CDT	Flash Flood Warning	EAX	Linn, Miami	4 hr
Jul 27, 7:23 AM CDT	River Flood Warning	EAX	Johnson	34 hr
Jul 27, 8:17 AM CDT	Flash Flood Warning	EAX	Johnson, Leavenworth, Wyandotte	3 hr
Jul 27, 8:55 AM CDT	Areal Flood Warning	EAX	Miami	5 hr
Jul 27, 9:35 AM CDT	Areal Flood Warning	EAX	Linn, Miami	4 hr
Jul 27, 10:55 AM CDT	Areal Flood Warning	EAX	Johnson, Leavenworth, Wyandotte	3 hr
Jul 27, 1:43 PM CDT	Areal Flood Warning	EAX	Johnson, Wyandotte	9 hr
Jul 27, 1:46 PM CDT	Areal Flood Warning	EAX	Linn, Miami	48 hr

Nearby

Flash Flood Warnings in Kansas, 2017 Every 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.