Alert archive / Colorado / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 233, NWS Goodland, KS
NWS Goodland, KS issued this severe thunderstorm warning at Sep 12, 2021, 5:44 PM MDT for Cheyenne County, Kit Carson County, Colorado. It was in force for 61 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Sep 12, 2021, 5:44 PM MDT (23:44 UTC)
- Expired
- Sep 12, 2021, 6:45 PM MDT
- In force
- 61 min
- Issued by
- NWS Goodland, KS
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Cheyenne County, CO, Kit Carson County, CO
The radar
The Goodland radar (KGLD), 110 km from the middle of the area, began a volume at 23:47 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 12, 6:16 PM MDT | TSTM WND GST 60 | 4 Ssw Wild Horse, CO | PUBLIC REPORT OF 50-60 MPH WINDS. |
| Sep 12, 6:44 PM MDT | TSTM WND GST 53 | 2 Sw Firstview, CO |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 11.7 hours before the alert went out and 95 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
- 9 J/kg
- Mixed-layer CIN
- -377 J/kg
- Mixed-layer LCL
- 2276 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
503
WUUS53 KGLD 122344
SVRGLD
COC017-063-130045-
/O.NEW.KGLD.SV.W.0233.210912T2344Z-210913T0045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
544 PM MDT Sun Sep 12 2021
The National Weather Service in Goodland has issued a
* Severe Thunderstorm Warning for...
Western Cheyenne County in east central Colorado...
Southwestern Kit Carson County in east central Colorado...
* Until 645 PM MDT.
* At 543 PM MDT, a severe thunderstorm was located over Boyero, or 26
miles southwest of Flagler, moving east at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* This severe thunderstorm will remain over mainly rural areas of
western Cheyenne and southwestern Kit Carson Counties in east
central Colorado, including the following locations... Wild Horse,
Firstview and Aroya.
This includes Interstate 70 in Colorado between mile markers 391 and
407.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3929 10315 3928 10258 3869 10250 3869 10316
TIME...MOT...LOC 2343Z 272DEG 32KT 3894 10326
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
TT3 follow-up statements
652
WWUS53 KGLD 130014
SVSGLD
Severe Weather Statement
National Weather Service Goodland KS
614 PM MDT Sun Sep 12 2021
COC017-063-130045-
/O.CON.KGLD.SV.W.0233.000000T0000Z-210913T0045Z/
Cheyenne CO-Kit Carson CO-
614 PM MDT Sun Sep 12 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM MDT
FOR WESTERN CHEYENNE AND SOUTHWESTERN KIT CARSON COUNTIES IN EAST
CENTRAL COLORADO...
At 614 PM MDT, a severe thunderstorm was located 12 miles northwest
of Kit Carson, or 25 miles south of Seibert, moving east at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Flagler, Kit Carson, Firstview, Wild Horse and Aroya.
This includes Interstate 70 in Colorado between mile markers 391 and
407.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3929 10315 3928 10258 3869 10250 3869 10316
TIME...MOT...LOC 0014Z 272DEG 32KT 3893 10290
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
TT483 WWUS53 KGLD 130030 SVSGLD Severe Weather Statement National Weather Service Goodland KS 630 PM MDT Sun Sep 12 2021 COC017-063-130045- /O.CON.KGLD.SV.W.0233.000000T0000Z-210913T0045Z/ Cheyenne CO-Kit Carson CO- 630 PM MDT Sun Sep 12 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM MDT FOR WESTERN CHEYENNE AND SOUTHWESTERN KIT CARSON COUNTIES IN EAST CENTRAL COLORADO... At 630 PM MDT, a severe thunderstorm was located 12 miles north of Kit Carson, or 20 miles west of Cheyenne Wells, moving east at 35 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Kit Carson, Wild Horse and Firstview. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3925 10308 3928 10258 3869 10250 3877 10312 TIME...MOT...LOC 0030Z 272DEG 32KT 3892 10271 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...0.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ TT
816
WWUS53 KGLD 130039
SVSGLD
Severe Weather Statement
National Weather Service Goodland KS
639 PM MDT Sun Sep 12 2021
COC017-063-130047-
/O.EXP.KGLD.SV.W.0233.000000T0000Z-210913T0045Z/
Cheyenne CO-Kit Carson CO-
639 PM MDT Sun Sep 12 2021
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN CHEYENNE AND
SOUTHWESTERN KIT CARSON COUNTIES IN EAST CENTRAL COLORADO WILL EXPIRE
AT 645 PM MDT...
A new Severe Thunderstorm Warning has been issued for northern
Cheyenne County in Colorado replacing the previous warning. This new
warning will allow the previous warning to expire.
Remember, a Severe Thunderstorm Warning still remains in for
northern Cheyenne County until 730pm MDT
LAT...LON 3925 10308 3928 10258 3869 10250 3877 10312
TIME...MOT...LOC 0037Z 272DEG 32KT 3892 10263
$$
TTThe office that day
Everything else NWS Goodland, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 11, 9:32 PM MDT | Special Weather Statement | GLD | Cheyenne, Kit Carson, Yuma | 28 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, 5:58 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson, Yuma | 47 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 2021Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.