Alert archive / Kansas / Flash Flood Warnings in 2021

Flash Flood Warning 14, NWS Dodge City, KS

August 15, 2021Ellis County, Trego County, Kansas

NWS Dodge City, KS issued this flash flood warning at Aug 15, 2021, 4:01 AM CDT for Ellis County, Trego 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: Aug 15, 2021, 4:01 AM CDT (09:01 UTC)
Expired: Aug 15, 2021, 7:00 AM CDT
In force: 3 hr
Issued by: NWS Dodge City, KS
Area: Storm-based polygon
Flood severity: None

Counties Ellis County, KS, Trego County, KS

The radar

The Dodge City radar (KDDC), 146 km from the middle of the area, began a volume at 09:05 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

Dodge City, (KDDC), launched 00:00Z, 9.0 hours before the alert went out and 144 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: 1001 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 1761 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: -22 m²/s²
0-3 km storm-relative helicity: 37 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

As transmitted.

169 
WGUS53 KDDC 150901
FFWDDC
KSC051-195-151200-
/O.NEW.KDDC.FF.W.0014.210815T0901Z-210815T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Dodge City KS
401 AM CDT Sun Aug 15 2021

The National Weather Service in Dodge City has issued a

* Flash Flood Warning for...
  Northwestern Ellis County in central Kansas...
  Northeastern Trego County in west central Kansas...

* Until 700 AM CDT.

* At 401 AM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Flash flooding is ongoing or 
  expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Ellis, Ogallah and Riga.

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.

&&

LAT...LON 3885 9974 3912 9974 3913 9952 3913 9951
      3913 9947 3913 9946 3913 9943 3885 9943

FLASH FLOOD...RADAR INDICATED

$$

JJOHNSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 15, 3:09 AM CDT	Special Weather Statement	DDC	Trego	36 min
Aug 15, 3:46 AM CDT	Special Weather Statement	DDC	Trego	29 min
Aug 15, 4:43 AM CDT	Special Weather Statement	DDC	Trego	47 min
Aug 15, 5:13 AM CDT	Severe Thunderstorm Warning	DDC	Ellis, Ness, Trego	47 min
Aug 15, 5:56 AM CDT	Severe Thunderstorm Warning	DDC	Ellis, Ness, Rush, Trego	49 min
Aug 15, 6:44 AM CDT	Special Weather Statement	DDC	Rush	31 min
Aug 15, 8:12 AM CDT	Special Weather Statement	DDC	Rush	33 min
Aug 15, 8:47 AM CDT	Areal Flood Advisory	DDC	Ellis, Rush, Trego	3 hr
Aug 15, 3:55 PM CDT	Special Weather Statement	DDC	Trego	35 min
Aug 15, 4:30 PM CDT	Special Weather Statement	DDC	Trego	30 min
Aug 15, 4:47 PM CDT	Areal Flood Advisory	DDC	Trego	3 hr
Aug 15, 4:59 PM CDT	Special Weather Statement	DDC	Trego	31 min
Aug 15, 5:06 PM CDT	Special Weather Statement	DDC	Trego	24 min
Aug 15, 5:29 PM CDT	Special Weather Statement	DDC	Trego	31 min
Aug 15, 5:38 PM CDT	Severe Thunderstorm Warning	DDC	Ness, Trego	52 min
Aug 15, 6:08 PM CDT	Severe Thunderstorm Warning Considerable damage threat	DDC	Lane, Ness	52 min

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.