Alert archive / Colorado / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 87, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 24, 2021, 4:02 PM MDT for Lincoln County, Washington County, Colorado. It was in force for 43 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 24, 2021, 4:02 PM MDT (22:02 UTC)
- Expired
- Jun 24, 2021, 4:45 PM MDT
- In force
- 43 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Lincoln County, CO, Washington County, CO
The radar
The Goodland radar (KGLD), 116 km from the middle of the area, began a volume at 22:05 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 24, 3:56 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 10.0 hours before the alert went out and 38 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2028 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
940
WUUS55 KBOU 242202
SVRBOU
COC073-121-242245-
/O.NEW.KBOU.SV.W.0087.210624T2202Z-210624T2245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
402 PM MDT Thu Jun 24 2021
The National Weather Service in Denver Colorado has issued a
* Severe Thunderstorm Warning for...
Southeastern Washington County in northeastern Colorado...
Northeastern Lincoln County in east central Colorado...
* Until 445 PM MDT.
* At 402 PM MDT, a severe thunderstorm was located 7 miles south of
Arickaree School, or 24 miles north of Flagler, moving southeast at
15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees. Hail damage to
vehicles is expected.
* Locations impacted include...
Thurman and Cope.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3957 10281 3957 10316 3931 10316 3936 10332
3962 10328 3973 10311 3973 10281 3960 10280
TIME...MOT...LOC 2202Z 295DEG 13KT 3964 10308
HAIL...1.00IN
WIND...60MPH
$$
ENTREKIN2 follow-up statements
353
WWUS55 KBOU 242229
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
429 PM MDT Thu Jun 24 2021
COC073-121-242245-
/O.CON.KBOU.SV.W.0087.000000T0000Z-210624T2245Z/
Washington CO-Lincoln CO-
429 PM MDT Thu Jun 24 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM MDT
FOR SOUTHEASTERN WASHINGTON AND NORTHEASTERN LINCOLN COUNTIES...
At 428 PM MDT, a severe thunderstorm was located 7 miles southwest of
Cope, or 21 miles north of Seibert, moving southeast at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees. Hail damage to
vehicles is expected.
Locations impacted include...
Thurman and Cope.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3957 10281 3957 10316 3931 10316 3938 10326
3959 10324 3972 10300 3973 10281 3960 10280
TIME...MOT...LOC 2228Z 295DEG 13KT 3960 10297
HAIL...1.00IN
WIND...60MPH
$$
ENTREKIN874
WWUS55 KBOU 242244
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
444 PM MDT Thu Jun 24 2021
COC073-121-242254-
/O.EXP.KBOU.SV.W.0087.000000T0000Z-210624T2245Z/
Washington CO-Lincoln CO-
444 PM MDT Thu Jun 24 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WASHINGTON AND
NORTHEASTERN LINCOLN COUNTIES WILL EXPIRE AT 445 PM MDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 1000 PM MDT for
northeastern and east central Colorado.
LAT...LON 3957 10281 3957 10316 3931 10316 3938 10326
3959 10324 3972 10300 3973 10281 3960 10280
TIME...MOT...LOC 2244Z 295DEG 13KT 3958 10291
$$
ENTREKINThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 2:17 PM MDT | Special Weather Statement | BOU | Washington | 43 min |
| Jun 24, 3:22 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln, Washington | 38 min |
| Jun 24, 3:34 PM MDT | Special Weather Statement | BOU | Elbert | 41 min |
| Jun 24, 4:54 PM MDT | Special Weather Statement | BOU | Lincoln | 51 min |
| Jun 24, 5:02 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 43 min |
| Jun 24, 5:46 PM MDT | Special Weather Statement | BOU | Lincoln | 44 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.