Alert archive / Colorado / Special Weather Statements in 2021

Special Weather Statement, NWS Goodland, KS

June 1, 2021Cheyenne County, Colorado

NWS Goodland, KS issued this special weather statement at Jun 1, 2021, 8:17 PM MDT for Cheyenne County, Colorado. It was in force for 28 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: Jun 1, 2021, 8:17 PM MDT (02:17 UTC)
Expired: Jun 1, 2021, 8:45 PM MDT
In force: 28 min
Issued by: NWS Goodland, KS

County Cheyenne County, CO

The radar

The Goodland radar (KGLD), 93 km from the middle of the area, began a volume at 02:20 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, 2.3 hours before the alert went out and 124 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: 22 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 2073 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: -22 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 Jun 1, 6:59 PM MDT, 1 hour 18 minutes earlier.

Area forecast discussion, Jun 1, 6:59 PM MDT, 1 hour 18 minutes before

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Hazardous weather outlook, Jun 1, 10:33 AM MDT, 9 hours 44 minutes before

Hazardous Weather Outlook
National Weather Service Goodland KS
1033 AM MDT Tue Jun 1 2021

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-021645-
Yuma-Kit Carson-Cheyenne-Rawlins-Decatur-Norton-Sherman-Thomas-
Sheridan-Graham-Wallace-Logan-Gove-Greeley-Wichita-Dundy-Hitchcock-
Red Willow-
1033 AM MDT Tue Jun 1 2021 /1133 AM CDT Tue Jun 1 2021/

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

.DAY ONE...THIS AFTERNOON AND TONIGHT...

There is a marginal risk for severe thunderstorms this evening in
northeast Colorado. Storms will be isolated, but if any develop they
will be capable of producing large hail and damaging winds. Storms are
expected to dissipate along the Colorado and Kansas border area late this
evening.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH TUESDAY...

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required.

In the hours before

Special weather statement, Jun 1, 6:50 PM MDT, 1 hour 27 minutes before

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Local storm report, Jun 1, 6:51 PM MDT, 1 hour 26 minutes before

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Special weather statement, Jun 1, 6:52 PM MDT, 1 hour 25 minutes before

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Special weather statement, Jun 1, 7:14 PM MDT, 1 hour 3 minutes before

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Special weather statement, Jun 1, 7:30 PM MDT, 47 minutes before

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Special weather statement, Jun 1, 8:17 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
Jun 1, 6:30 PM MDT	Special Weather Statement	GLD	Sherman	30 min
Jun 1, 6:50 PM MDT	Special Weather Statement	GLD	Kit Carson	25 min
Jun 1, 6:52 PM MDT	Special Weather Statement	GLD	Kit Carson	23 min
Jun 1, 7:14 PM MDT	Special Weather Statement	GLD	Kit Carson	31 min
Jun 1, 7:30 PM MDT	Special Weather Statement	GLD	Kit Carson	30 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.