Alert archive / Kansas / Flash Flood Warnings in 2021

Flash Flood Warning 28, NWS Goodland, KS

July 4, 2021Gove County, Graham County, Sheridan County, Kansas

NWS Goodland, KS issued this flash flood warning at Jul 4, 2021, 4:58 PM CDT for Gove County, Graham County, Sheridan County, Kansas. It was in force for 2 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 4, 2021, 4:58 PM CDT (21:58 UTC)
Expired: Jul 4, 2021, 7:26 PM CDT
In force: 2 hr
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Flood severity: None

Counties Gove County, KS, Graham County, KS, Sheridan County, KS

The radar

The Goodland radar (KGLD), 110 km from the middle of the area, began a volume at 21:58 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.0 hours before the alert went out and 223 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: 524 J/kg
Mixed-layer CIN: -290 J/kg
Mixed-layer LCL: 1478 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 119 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

751 
WGUS53 KGLD 042158
FFWGLD
KSC063-065-179-050100-
/O.NEW.KGLD.FF.W.0028.210704T2158Z-210705T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Goodland KS
458 PM CDT Sun Jul 4 2021

The National Weather Service in Goodland has issued a

* Flash Flood Warning for...
  Southwestern Graham County in northwestern Kansas...
  Southern Sheridan County in northwestern Kansas...
  Northern Gove County in west central Kansas...

* Until 800 PM CDT.

* At 458 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Additional thunderstorms are 
  expected to move into the area over the next couple of hours. 
  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...
  Hoxie, Quinter, Grainfield, Grinnell, Gove, Morland, Park, Tasco, 
  Saint Peter and Studley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 3913 10074 3913 10072 3915 10072 3943 10042
      3932 9996 3913 10011 3913 10015 3909 10015
      3889 10032 3890 10067 3906 10081

FLASH FLOOD...RADAR INDICATED

$$

ANW

1 follow-up statement

967 
WGUS73 KGLD 050026
FFSGLD

Flash Flood Statement
National Weather Service Goodland KS
726 PM CDT Sun Jul 4 2021

KSC063-065-179-050036-
/O.CAN.KGLD.FF.W.0028.000000T0000Z-210705T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gove KS-Graham KS-Sheridan KS-
726 PM CDT Sun Jul 4 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHWESTERN GRAHAM, 
SOUTHERN SHERIDAN AND NORTHERN GOVE COUNTIES...

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

LAT...LON 3913 10074 3913 10072 3915 10072 3943 10042
      3932 9996 3913 10011 3913 10015 3909 10015
      3889 10032 3890 10067 3906 10081

$$

ANW

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 9:03 PM CDT	Special Weather Statement	GLD	Sherman	27 min
Jul 3, 9:27 PM CDT	Special Weather Statement	GLD	Sherman	33 min
Jul 4, 3:47 PM CDT	Special Weather Statement	GLD	Graham	28 min
Jul 4, 4:10 PM CDT	Severe Thunderstorm Warning	GLD	Gove, Graham, Sheridan	35 min
Jul 4, 4:26 PM CDT	Severe Thunderstorm Warning	GLD	Decatur, Graham, Norton, Sheridan	34 min
Jul 4, 4:39 PM CDT	Severe Thunderstorm Warning	GLD	Gove, Graham, Sheridan	36 min
Jul 4, 4:58 PM CDT	Severe Thunderstorm Warning	GLD	Graham, Sheridan	32 min
Jul 4, 5:15 PM CDT	Severe Thunderstorm Warning	GLD	Gove, Logan, Sheridan	60 min
Jul 4, 5:30 PM CDT	Special Weather Statement	GLD	Sheridan	30 min
Jul 4, 6:09 PM CDT	Special Weather Statement	GLD	Logan	36 min
Jul 4, 6:15 PM CDT	Special Weather Statement	GLD	Gove	30 min
Jul 4, 6:34 PM CDT	Special Weather Statement	GLD	Rawlins	26 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.