Alert archive / Colorado / Tornado Warnings in 2021
Tornado Warning 2, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Apr 27, 2021, 4:36 PM MDT for Lincoln County, Colorado. It was in force for 24 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
- Apr 27, 2021, 4:36 PM MDT (22:36 UTC)
- Expired
- Apr 27, 2021, 5:00 PM MDT
- In force
- 24 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
County Lincoln County, CO
The radar
The Pueblo radar (KPUX), 115 km from the middle of the area, began a volume at 22:38 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 |
|---|---|---|---|
| Apr 27, 11:45 AM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 10.6 hours before the alert went out and 78 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
- 3214 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
842
WFUS55 KBOU 272236
TORBOU
COC073-272300-
/O.NEW.KBOU.TO.W.0002.210427T2236Z-210427T2300Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Denver CO
436 PM MDT Tue Apr 27 2021
The National Weather Service in Denver Colorado has issued a
* Tornado Warning for...
Northeastern Lincoln County in east central Colorado...
* Until 500 PM MDT.
* At 436 PM MDT, a severe thunderstorm capable of producing a tornado
was located 9 miles south of Arriba, or 11 miles southwest of
Flagler, moving northeast at 5 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This tornadic thunderstorm will remain over mainly rural areas of
northeastern Lincoln County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3917 10336 3931 10316 3930 10315 3913 10316
3908 10316 3905 10324
TIME...MOT...LOC 2236Z 218DEG 6KT 3916 10321
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
DANIELSONThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 1:52 AM MDT | Severe Thunderstorm Warning | BOU | Washington | 23 min |
| Apr 27, 3:16 AM MDT | Winter Storm Warning | BOU | Boulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more | 30 hr |
| Apr 27, 11:35 AM MDT | Special Weather Statement | BOU | Douglas | 25 min |
| Apr 27, 11:55 AM MDT | Special Weather Statement | BOU | Elbert | 50 min |
| Apr 27, 11:59 AM MDT | Special Weather Statement | BOU | Denver | 31 min |
| Apr 27, 12:49 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Weld | 26 min |
| Apr 27, 1:15 PM MDT | Special Weather Statement | BOU | Adams | 45 min |
| Apr 27, 1:51 PM MDT | Special Weather Statement | BOU | Lincoln | 39 min |
| Apr 27, 1:53 PM MDT | Special Weather Statement | BOU | Weld | 37 min |
| Apr 27, 1:59 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 31 min |
| Apr 27, 2:02 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 28 min |
| Apr 27, 2:08 PM MDT | Winter Weather Advisory | BOU | Clear Creek, Douglas, Gilpin, Jefferson, Park | 20 hr |
| Apr 27, 2:23 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 52 min |
| Apr 27, 2:43 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Morgan | 32 min |
| Apr 27, 2:49 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 41 min |
| Apr 27, 3:00 PM MDT | Special Weather Statement | BOU | Lincoln | 45 min |
| Apr 27, 3:10 PM MDT | Special Weather Statement | BOU | Morgan | 20 min |
| Apr 27, 3:13 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Morgan, Washington | 32 min |
| Apr 27, 3:28 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 47 min |
| Apr 27, 3:32 PM MDT | Special Weather Statement | BOU | Morgan | 28 min |
| Apr 27, 3:41 PM MDT | Tornado Warning | BOU | Lincoln | 34 min |
| Apr 27, 4:12 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 33 min |
| Apr 27, 4:16 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Morgan, Washington | 17 min |
| Apr 27, 5:19 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 26 min |
| Apr 27, 5:51 PM MDT | Special Weather Statement | BOU | Phillips | 24 min |
Nearby
Tornado Warnings in Colorado, 2021Every tornado warning in 2021Tornadoes 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.