Alert archive / Colorado / Special Weather Statements in 2021

Special Weather Statement, NWS Goodland, KS

May 15, 2021Cheyenne County, Colorado

NWS Goodland, KS issued this special weather statement at May 15, 2021, 9:43 PM MDT for Cheyenne County, Colorado. It was in force for 62 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: May 15, 2021, 9:43 PM MDT (03:43 UTC)
Expired: May 15, 2021, 10:45 PM MDT
In force: 62 min
Issued by: NWS Goodland, KS

County Cheyenne County, CO

The radar

The Goodland radar (KGLD), 105 km from the middle of the area, began a volume at 03:46 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

Denver, CO (KDNR), launched 00:00Z, 3.7 hours before the alert went out and 118 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: 841 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 973 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at May 15, 9:12 PM MDT, 31 minutes earlier.

Area forecast discussion, May 15, 9:12 PM MDT, 31 minutes before

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Hazardous weather outlook, May 15, 9:11 PM MDT, 32 minutes before

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In the hours before

Local storm report, May 15, 8:46 PM MDT, 57 minutes before

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Special weather statement, May 15, 8:50 PM MDT, 53 minutes before

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Local storm report, May 15, 9:09 PM MDT, 34 minutes before

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Special weather statement, May 15, 9:17 PM MDT, 26 minutes before

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Special weather statement, May 15, 9:32 PM MDT, 11 minutes before

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Special weather statement, May 15, 9:43 PM MDT, 0 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 15, 7:49 PM MDT	Special Weather Statement	GLD	Greeley	41 min
May 15, 7:56 PM MDT	Severe Thunderstorm Warning	GLD	Greeley	34 min
May 15, 8:09 PM MDT	Severe Thunderstorm Warning	GLD	Wichita	36 min
May 15, 8:26 PM MDT	Flash Flood Warning	GLD	Greeley	4 hr
May 15, 8:31 PM MDT	Severe Thunderstorm Warning	GLD	Greeley	44 min
May 15, 8:34 PM MDT	Flash Flood Warning	GLD	Wichita	4 hr
May 15, 8:45 PM MDT	Severe Thunderstorm Warning	GLD	Logan, Wallace	45 min
May 15, 8:50 PM MDT	Special Weather Statement	GLD	Wichita	55 min
May 15, 9:17 PM MDT	Special Weather Statement	GLD	Greeley	58 min
May 15, 9:21 PM MDT	Severe Thunderstorm Warning	GLD	Gove	39 min
May 15, 9:25 PM MDT	Flash Flood Warning	GLD	Logan	3 hr
May 15, 9:32 PM MDT	Special Weather Statement	GLD	Logan	58 min
May 15, 9:53 PM MDT	Flash Flood Warning	GLD	Gove	3 hr
May 15, 10:03 PM MDT	Severe Thunderstorm Warning	GLD	Gove, Logan	42 min
May 15, 10:20 PM MDT	Special Weather Statement	GLD	Graham, Sheridan, Thomas	55 min
May 15, 10:29 PM MDT	Flash Flood Warning	GLD	Wichita	2 hr
May 15, 10:35 PM MDT	Special Weather Statement	GLD	Wichita	40 min
May 15, 10:37 PM MDT	Severe Thunderstorm Warning	GLD	Sheridan	15 min
May 15, 11:04 PM MDT	Special Weather Statement	GLD	Sherman	41 min
May 15, 11:12 PM MDT	Special Weather Statement	GLD	Decatur, Norton, Rawlins	78 min
May 15, 11:15 PM MDT	Special Weather Statement	GLD	Graham, Sheridan, Thomas	75 min
May 15, 11:18 PM MDT	Special Weather Statement	GLD	Gove, Logan	57 min
May 16, 12:27 AM MDT	Areal Flood Warning	GLD	Gove, Logan, Wichita	5 hr
May 16, 12:41 AM MDT	Areal Flood Warning	GLD	Greeley, Wallace, Wichita	5 hr
May 16, 1:05 AM MDT	Areal Flood Warning	GLD	Graham	5 hr
May 16, 1:10 AM MDT	Areal Flood Warning	GLD	Gove, Sheridan	5 hr
May 16, 1:49 AM MDT	Flash Flood Watch	GLD	Gove, Greeley, Logan, Wallace, Wichita	23 hr
May 16, 4:48 PM MDT	Special Weather Statement	GLD	Thomas	57 min
May 16, 5:42 PM MDT	Special Weather Statement	GLD	Sheridan, Thomas	63 min
May 16, 5:49 PM MDT	Severe Thunderstorm Warning	GLD	Graham, Sheridan	41 min
May 15, 9:28 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne	12 min
May 15, 10:05 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne, Kit Carson	20 min
May 15, 10:39 PM MDT	Special Weather Statement	GLD	Kit Carson	51 min
May 16, 4:41 PM MDT	Special Weather Statement	GLD	Cheyenne	64 min
May 16, 5:15 PM MDT	Special Weather Statement	GLD	Kit Carson	30 min
May 16, 5:21 PM MDT	Tornado Warning	GLD	Cheyenne	24 min
May 16, 5:25 PM MDT	Severe Thunderstorm Warning	GLD	Kit Carson	35 min
May 16, 5:30 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne	45 min
May 16, 5:44 PM MDT	Special Weather Statement	GLD	Kit Carson	61 min
May 16, 5:46 PM MDT	Flash Flood Warning	GLD	Kit Carson	3 hr
May 16, 5:58 PM MDT	Severe Thunderstorm Warning	GLD	Cheyenne, Kit Carson	62 min
May 15, 7:21 PM MDT	Special Weather Statement	GLD	Red Willow	24 min
May 16, 12:48 AM MDT	Special Weather Statement	GLD	Red Willow	27 min
May 16, 1:17 AM MDT	Special Weather Statement	GLD	Red Willow	28 min

Nearby

Special Weather Statements in Colorado, 2021 Every special weather statement 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.