Alert archive / Colorado / Special Weather Statements in 2021
Special Weather Statement, NWS Goodland, KS
NWS Goodland, KS issued this special weather statement at Sep 11, 2021, 9:32 PM MDT for Cheyenne County, Kit Carson County, Yuma 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
- Sep 11, 2021, 9:32 PM MDT (03:32 UTC)
- Expired
- Sep 11, 2021, 10:00 PM MDT
- In force
- 28 min
- Issued by
- NWS Goodland, KS
- Hail
- 0.00 in
- Wind
- 30
Counties Cheyenne County, CO, Kit Carson County, CO, Yuma County, CO
The radar
The Goodland radar (KGLD), 89 km from the middle of the area, began a volume at 03:33 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, 3.5 hours before the alert went out and 58 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.
- Mixed-layer CAPE
- 403 J/kg
- Mixed-layer CIN
- -128 J/kg
- Mixed-layer LCL
- 3631 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 139 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
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</html>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 Sep 11, 5:45 PM MDT, 3 hours 47 minutes earlier.
Area forecast discussion, Sep 11, 5:45 PM MDT, 3 hours 47 minutes before
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<h1 id="headline">This service is currently unavailable.</h1>
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The site you requested is temporarily down for maintenance or an unexpected outage.
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<p id="message2">
Please try again in a few minutes.
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</html>Hazardous weather outlook, Sep 11, 8:28 PM MDT, 1 hour 4 minutes before
Hazardous Weather Outlook National Weather Service Goodland KS 828 PM MDT Sat Sep 11 2021 COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-121645- Yuma-Kit Carson-Cheyenne-Rawlins-Decatur-Norton-Sherman-Thomas- Sheridan-Graham-Wallace-Logan-Gove-Greeley-Wichita-Dundy-Hitchcock- Red Willow- 828 PM MDT Sat Sep 11 2021 /928 PM CDT Sat Sep 11 2021/ This hazardous weather outlook is for extreme southwest Nebraska... northwest Kansas and east central Colorado. .DAY ONE...TODAY... Isolated thunderstorms will track across northeast Colorado this evening. Gusty and potentially damaging winds cannot be ruled out in association with any thunderstorms, mainly over northeast Colorado and adjacent Kansas and Nebraska border counties between 7 PM and 11 PM MDT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH SATURDAY... Severe thunderstorms are possible late Sunday afternoon and evening from 5 PM MDT to 10 PM MDT, mainly in northeast Colorado and adjacent Kansas and Nebraska border counties. The primary hazards are wind gusts up to 65 mph and hail up to one inch in diameter. Elevated fire weather conditions are possible Monday afternoon south of a line from Flagler to Tribune and Leoti. Elevated fire weather conditions are possible Thursday afternoon across far eastern Colorado. Elevated fire weather conditions are possible Saturday afternoon along and west of Highway 25. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be required.
In the hours before
Special weather statement, Sep 11, 9:32 PM MDT, 0 minutes before
Special Weather Statement
National Weather Service Goodland KS
932 PM MDT Sat Sep 11 2021
COZ090>092-120400-
Kit Carson County CO-Cheyenne County CO-Yuma County CO-
932 PM MDT Sat Sep 11 2021
...Strong thunderstorms will impact portions of western Cheyenne
County in east central Colorado, Yuma County in northeastern Colorado
and Kit Carson Counties in east central Colorado through 1000 PM
MDT...
At 929 PM MDT, Doppler radar was tracking the outflow from
thunderstorms along a line extending from 8 miles east of Lone Star
to 8 miles south of Yuma to 6 miles north of Seibert to 13 miles
south of Flagler.
Movement was east at 45 mph.
HAZARD...Wind gusts between 30 and 40 mph and occasional lightning.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Strong thunderstorms will be near...
Vona around 935 PM MDT.
Stratton around 945 PM MDT.
Other locations in the path of these storms include Bethune.
This includes the following highways...
Interstate 70 in Colorado between mile markers 391 and 440.
Highway 385 between mile markers 160 and 165, and between mile
markers 171 and 261.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3957 10314 3957 10280 4025 10279 4032 10276
4032 10214 3950 10216 3901 10229 3863 10269
3871 10316
TIME...MOT...LOC 0329Z 276DEG 39KT 4034 10268 4000 10269 3938 10283
3911 10311
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH
LockhartThe office that day
Everything else NWS Goodland, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 11, 10:46 PM MDT | Special Weather Statement | GLD | Sherman | 29 min |
| Sep 11, 11:15 PM MDT | Special Weather Statement | GLD | Cheyenne, Rawlins, Sherman | 45 min |
| Sep 11, 11:57 PM MDT | Special Weather Statement | GLD | Logan, Thomas | 33 min |
| Sep 12, 1:33 AM MDT | Special Weather Statement | GLD | Cheyenne | 27 min |
| Sep 11, 10:13 PM MDT | Special Weather Statement | GLD | Kit Carson | 32 min |
| Sep 12, 4:35 PM MDT | Special Weather Statement | GLD | Kit Carson | 25 min |
| Sep 12, 4:59 PM MDT | Special Weather Statement | GLD | Kit Carson | 31 min |
| Sep 12, 5:06 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 54 min |
| Sep 12, 5:44 PM MDT | Severe Thunderstorm Warning | GLD | Cheyenne, Kit Carson | 61 min |
| Sep 12, 5:58 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson, Yuma | 47 min |
Nearby
Special Weather Statements in Colorado, 2021Every 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.