Alert archive / Kansas / Flash Flood Warnings in 2021

Flash Flood Warning 8, NWS Wichita, KS

July 17, 2021Cowley County, Kansas

NWS Wichita, KS issued this flash flood warning at Jul 17, 2021, 2:32 AM CDT for Cowley County, Kansas. It was in force for 109 min. 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 17, 2021, 2:32 AM CDT (07:32 UTC)
Expired: Jul 17, 2021, 4:21 AM CDT
In force: 109 min
Issued by: NWS Wichita, KS
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

County Cowley County, KS

The radar

The Wichita radar (KICT), 80 km from the middle of the area, began a volume at 07:33 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 (KTOP), launched 00:00Z, 7.5 hours before the alert went out and 205 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: 758 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 1146 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -9 m²/s²
0-3 km storm-relative helicity: 25 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

870 
WGUS53 KICT 170732
FFWICT
KSC035-171145-
/O.NEW.KICT.FF.W.0008.210717T0732Z-210717T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Wichita KS
232 AM CDT Sat Jul 17 2021

The National Weather Service in Wichita has issued a

* Flash Flood Warning for...
  Northeastern Cowley County in south central Kansas...

* Until 645 AM CDT.

* At 232 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 2 and 4 inches of rain 
  have fallen. The expected rainfall rate is 3 to 4 inches in 1 
  hour. Additional rainfall amounts of 1 to 3 inches or more are 
  possible in the warned area. Flash flooding is ongoing or expected 
  to begin shortly.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding.

  SOURCE...Radar.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Burden, Atlanta and Cambridge.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive into flooded areas or go around barricades. Nearly two 
feet of water will carry most vehicles away. Turn around, don't 
drown.

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

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

&&

LAT...LON 3722 9653 3721 9670 3742 9682 3747 9670
      3747 9653

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...3-5 INCHES IN 1 HOUR

$$

McGuire

1 follow-up statement

998 
WGUS73 KICT 170921
FFSICT

Flash Flood Statement
National Weather Service Wichita KS
421 AM CDT Sat Jul 17 2021

KSC035-170931-
/O.CAN.KICT.FF.W.0008.000000T0000Z-210717T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cowley KS-
421 AM CDT Sat Jul 17 2021

...FLASH FLOOD WARNING IS CANCELLED FOR NORTHEASTERN COWLEY COUNTY...

The heavy rain has ended. Flash flooding is no longer expected to 
pose a threat. Please continue to heed remaining road closures.

A Flood Watch remains in effect until 100 PM CDT Saturday for 
Portions of Central, South Central, and Southeast Kansas.

LAT...LON 3722 9653 3721 9670 3742 9682 3747 9670
      3747 9653

$$

McGuire

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 2:08 AM CDT	Areal Flood Warning	ICT	Cowley	8 hr
Jul 17, 2:16 AM CDT	Special Weather Statement	ICT	Cowley	29 min
Jul 17, 3:17 AM CDT	Flood Watch	ICT	Allen, Butler, Chase, Chautauqua, Cowley, Elk and 7 more	10 hr
Jul 17, 4:17 AM CDT	Special Weather Statement	ICT	Butler	28 min
Jul 17, 5:45 AM CDT	Special Weather Statement	ICT	Barton	30 min
Jul 17, 6:43 AM CDT	Severe Thunderstorm Warning	ICT	Sedgwick, Sumner	36 min
Jul 17, 7:29 AM CDT	Special Weather Statement	ICT	Reno	31 min
Jul 17, 8:04 AM CDT	Special Weather Statement	ICT	Sedgwick	26 min
Jul 17, 8:16 AM CDT	Special Weather Statement	ICT	Montgomery	29 min
Jul 17, 8:22 AM CDT	Special Weather Statement	ICT	Kingman, Reno	23 min
Jul 17, 9:11 AM CDT	Areal Flood Warning	ICT	Kingman, Reno, Sedgwick	4 hr
Jul 17, 9:33 AM CDT	Areal Flood Warning	ICT	Allen, Chautauqua, Elk, Greenwood, Labette, Montgomery and 3 more	8 hr
Jul 17, 10:47 AM CDT	Flash Flood Warning Considerable damage threat	ICT	Montgomery, Wilson	3 hr
Jul 17, 11:22 AM CDT	Special Weather Statement	ICT	Montgomery	23 min
Jul 17, 11:42 AM CDT	Special Weather Statement	ICT	Wilson, Woodson	33 min
Jul 17, 1:54 PM CDT	River Flood Warning	ICT	Wilson	18 hr
Jul 17, 2:09 PM CDT	River Flood Warning	ICT	Wilson	7 hr

Nearby

Flash Flood Warnings in Kansas, 2021 Every flash flood warning in 2021

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.