Alert archive / Kansas / Flash Flood Warnings in 2023

Flash Flood Warning 6, NWS Goodland, KS

May 12, 2023Rawlins County, Thomas County, Kansas; Hitchcock County, Nebraska

NWS Goodland, KS issued this flash flood warning at May 12, 2023, 3:21 AM CDT for Rawlins County, Thomas County, Kansas; Hitchcock County, Nebraska. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 12, 2023, 3:21 AM CDT (08:21 UTC)
Expired: May 12, 2023, 9:00 AM CDT
In force: 6 hr
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Flood severity: None

Counties Rawlins County, KS, Thomas County, KS, Hitchcock County, NE

The radar

The Goodland radar (KGLD), 71 km from the middle of the area, began a volume at 08:23 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 00:00Z, 8.4 hours before the alert went out and 156 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: 384 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1394 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 110 m²/s²
0-3 km storm-relative helicity: 61 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.8

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Goodland, KS wrote its last area forecast discussion before this flash flood warning went out at May 12, 12:51 AM CDT, 2 hours 30 minutes earlier.

Area forecast discussion, May 12, 12:51 AM CDT, 2 hours 30 minutes before

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Hazardous weather outlook, May 11, 9:41 PM CDT, 5 hours 40 minutes before

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In the hours before

Local storm report, May 11, 9:49 PM CDT, 5 hours 32 minutes before

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Special weather statement, May 11, 10:49 PM CDT, 4 hours 32 minutes before

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Special weather statement, May 11, 10:57 PM CDT, 4 hours 24 minutes before

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Local storm report, May 12, 1:05 AM CDT, 2 hours 16 minutes before

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Special weather statement, May 12, 1:45 AM CDT, 1 hour 36 minutes before

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Special weather statement, May 12, 2:30 AM CDT, 51 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 11, 7:10 PM CDT	Severe Thunderstorm Warning	GLD	Logan, Thomas	50 min
May 11, 7:17 PM CDT	Tornado Warning	GLD	Logan, Thomas	31 min
May 11, 7:31 PM CDT	Tornado Warning Tornado observed	GLD	Rawlins, Thomas	29 min
May 11, 7:35 PM CDT	Severe Thunderstorm Warning	GLD	Gove, Logan, Sheridan, Thomas	29 min
May 11, 8:06 PM CDT	Special Weather Statement	GLD	Thomas	39 min
May 11, 8:07 PM CDT	Special Weather Statement	GLD	Graham	23 min
May 11, 8:14 PM CDT	Severe Thunderstorm Warning	GLD	Thomas	61 min
May 11, 8:25 PM CDT	Special Weather Statement	GLD	Norton	20 min
May 11, 8:26 PM CDT	Special Weather Statement	GLD	Thomas	19 min
May 11, 9:11 PM CDT	Special Weather Statement	GLD	Decatur	34 min
May 11, 9:47 PM CDT	Special Weather Statement	GLD	Decatur	28 min
May 11, 10:49 PM CDT	Special Weather Statement	GLD	Norton	11 min
May 11, 10:57 PM CDT	Special Weather Statement	GLD	Decatur	18 min
May 12, 1:45 AM CDT	Special Weather Statement	GLD	Rawlins	45 min
May 12, 2:30 AM CDT	Special Weather Statement	GLD	Rawlins	45 min
May 12, 4:02 AM CDT	Special Weather Statement	GLD	Rawlins	28 min
May 12, 8:59 AM CDT	Areal Flood Warning	GLD	Rawlins, Thomas	33 hr
May 11, 7:08 PM CDT	Special Weather Statement	GLD	Cheyenne	37 min
May 11, 7:43 PM CDT	Special Weather Statement	GLD	Cheyenne	32 min
May 11, 9:44 PM CDT	Special Weather Statement	GLD	Red Willow	31 min
May 12, 6:28 AM CDT	River Flood Advisory	GLD	Hitchcock	8 hr

Nearby

Flash Flood Warnings in Kansas, 2023 Flash Flood Warnings in Nebraska, 2023 Every flash flood warning in 2023

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.