Alert archive / Kansas / Flash Flood Warnings in 2023

Flash Flood Warning 30, NWS Goodland, KS

May 30, 2023Cheyenne County, Kansas; Dundy County, Nebraska

NWS Goodland, KS issued this flash flood warning at May 30, 2023, 3:15 AM CDT for Cheyenne County, Kansas; Dundy County, Nebraska. It was in force for 106 min. 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 30, 2023, 3:15 AM CDT (08:15 UTC)
Expired: May 30, 2023, 5:01 AM CDT
In force: 106 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Flood severity: None

Counties Cheyenne County, KS, Dundy County, NE

The radar

The Goodland radar (KGLD), 68 km from the middle of the area, began a volume at 08:15 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, 8.3 hours before the alert went out and 158 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: 2 J/kg
Mixed-layer CIN: -98 J/kg
Mixed-layer LCL: 3017 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 6 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

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 29, 11:51 PM CDT, 3 hours 24 minutes earlier.

Area forecast discussion, May 29, 11:51 PM CDT, 3 hours 24 minutes before

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Hazardous weather outlook, May 29, 10:49 PM CDT, 4 hours 26 minutes before

Hazardous Weather Outlook
National Weather Service Goodland KS
949 PM MDT Mon May 29 2023

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-310400-
Yuma-Kit Carson-Cheyenne-Rawlins-Decatur-Norton-Sherman-Thomas-
Sheridan-Graham-Wallace-Logan-Gove-Greeley-Wichita-Dundy-Hitchcock-
Red Willow-
949 PM MDT Mon May 29 2023 /1049 PM CDT Mon May 29 2023/

This hazardous weather outlook is for extreme southwest Nebraska...
northwest Kansas and east central Colorado.

.DAY ONE...TONIGHT...

Flooding is ongoing across portions of southwest Nebraska, from
heavy rainfall received tonight. Please see the latest warning
products for the latest updated information.

Wind gusts up to 60 MPH may occur through midnight with any storms
that form north of Highway 36. However confidence is low wind gusts
will reach that magnitude.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH MONDAY...

There is a marginal risk for severe weather within the region on
Tuesday and Wednesday. Possible hazards include severe winds and
large hail as well as the continued risk for flooding from heavy
rainfall. Please watch for future forecast updates.

Chances for showers and thunderstorms look to continue throughout
this week and into the weekend. Although severe weather cannot be
ruled out, the primary concerns at this time continue to be locally
heavy rainfall and the possibility of flooding and flash flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

JTL

In the hours before

Special weather statement, May 29, 11:22 PM CDT, 3 hours 53 minutes before

Special Weather Statement
National Weather Service Goodland KS
1122 PM CDT Mon May 29 2023

KSZ001-300515-
Cheyenne KS-
1122 PM CDT Mon May 29 2023

...Strong thunderstorms will impact portions of Cheyenne County in
northwestern Kansas through 1215 AM CDT...

At 1122 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 5 miles east of Haigler to 10 miles west of St.
Francis. Movement was east at 30 mph.

HAZARD...Winds in excess of 30 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
  St. Francis and Bird City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3960 10141 3971 10205 4000 10205 4000 10141
TIME...MOT...LOC 0422Z 280DEG 24KT 4000 10184 3977 10199

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...30 MPH

KMK

Special weather statement, May 30, 1:19 AM CDT, 1 hour 56 minutes before

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Special weather statement, May 30, 1:45 AM CDT, 1 hour 30 minutes before

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Special weather statement, May 30, 2:04 AM CDT, 1 hour 11 minutes before

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Special weather statement, May 30, 2:14 AM CDT, 1 hour 1 minute before

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Special weather statement, May 30, 2:45 AM CDT, 30 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 29, 10:02 PM CDT	Special Weather Statement	GLD	Rawlins	28 min
May 29, 11:22 PM CDT	Special Weather Statement	GLD	Cheyenne	53 min
May 30, 1:19 AM CDT	Special Weather Statement	GLD	Cheyenne	26 min
May 30, 2:04 AM CDT	Special Weather Statement	GLD	Rawlins	26 min
May 30, 4:00 PM CDT	Special Weather Statement	GLD	Graham	30 min
May 30, 4:36 PM CDT	Special Weather Statement	GLD	Graham	24 min
May 30, 4:42 PM CDT	Severe Thunderstorm Warning	GLD	Graham, Sheridan	63 min
May 30, 5:14 PM CDT	Special Weather Statement	GLD	Gove	31 min
May 30, 5:23 PM CDT	Flash Flood Warning	GLD	Graham	3 hr
May 30, 5:30 PM CDT	Special Weather Statement	GLD	Sherman	30 min
May 30, 5:39 PM CDT	Special Weather Statement	GLD	Sherman	36 min
May 30, 5:46 PM CDT	Flash Flood Warning	GLD	Sherman, Wallace	3 hr
May 30, 5:47 PM CDT	Severe Thunderstorm Warning	GLD	Gove, Graham, Sheridan	58 min
May 30, 5:56 PM CDT	Severe Thunderstorm Warning Considerable damage threat	GLD	Sheridan, Thomas	64 min
May 30, 6:00 PM CDT	Special Weather Statement	GLD	Greeley	60 min
May 30, 6:14 PM CDT	Severe Thunderstorm Warning	GLD	Sherman, Thomas	25 min
May 30, 6:16 PM CDT	Flash Flood Warning	GLD	Decatur, Rawlins, Sheridan, Thomas	3 hr
May 30, 6:18 PM CDT	Flash Flood Warning	GLD	Gove, Graham, Sheridan	3 hr
May 30, 6:22 PM CDT	Special Weather Statement	GLD	Wallace	53 min
May 30, 6:26 PM CDT	Special Weather Statement	GLD	Logan	34 min
May 30, 6:27 PM CDT	Flash Flood Warning	GLD	Logan	2 hr
May 30, 6:40 PM CDT	Flash Flood Warning	GLD	Thomas	2 hr
May 30, 6:49 PM CDT	Severe Thunderstorm Warning	GLD	Gove	43 min
May 30, 6:54 PM CDT	Special Weather Statement	GLD	Wichita	36 min
May 30, 6:59 PM CDT	Severe Thunderstorm Warning	GLD	Rawlins	32 min
May 29, 8:13 PM CDT	Special Weather Statement	GLD	Phillips	32 min
May 29, 8:43 PM CDT	Special Weather Statement	GLD	Phillips	32 min
May 30, 4:55 PM CDT	Severe Thunderstorm Warning	GLD	Cheyenne, Kit Carson	65 min
May 30, 6:30 PM CDT	Severe Thunderstorm Warning	GLD	Cheyenne, Kit Carson	44 min
May 29, 7:13 PM CDT	Special Weather Statement	GLD	Hitchcock	47 min
May 29, 7:23 PM CDT	Flash Flood Warning	GLD	Dundy	6 hr
May 29, 7:43 PM CDT	Special Weather Statement	GLD	Dundy	32 min
May 29, 8:31 PM CDT	Special Weather Statement	GLD	Dundy	29 min
May 29, 9:01 PM CDT	Special Weather Statement	GLD	Dundy	29 min
May 29, 10:57 PM CDT	Special Weather Statement	GLD	Dundy	48 min
May 29, 11:02 PM CDT	Special Weather Statement	GLD	Hitchcock	43 min
May 29, 11:32 PM CDT	Flash Flood Warning	GLD	Hitchcock	3 hr
May 30, 1:45 AM CDT	Special Weather Statement	GLD	Dundy	30 min
May 30, 1:57 AM CDT	Areal Flood Warning	GLD	Dundy, Hitchcock	6 hr
May 30, 2:14 AM CDT	Special Weather Statement	GLD	Dundy	31 min
May 30, 2:45 AM CDT	Special Weather Statement	GLD	Dundy	30 min

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.