Alert archive / Colorado / Tornado Warnings in 2021
Tornado Warning 7, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at May 22, 2021, 2:05 PM MDT for Adams County, Arapahoe County, Colorado. It was in force for 25 min. 1 report 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
- May 22, 2021, 2:05 PM MDT (20:05 UTC)
- Expired
- May 22, 2021, 2:30 PM MDT
- In force
- 25 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Adams County, CO, Arapahoe County, CO
The radar
The Denver radar (KFTG), 12 km from the middle of the area, began a volume at 20:04 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 |
|---|---|---|---|
| May 22, 2:08 PM MDT | TORNADO | 2 S Bennett, CO |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 22, 12:20 PM MDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 8.1 hours before the alert went out and 105 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
- 1528 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
852
WFUS55 KBOU 222005
TORBOU
COC001-005-222030-
/O.NEW.KBOU.TO.W.0007.210522T2005Z-210522T2030Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Denver CO
205 PM MDT Sat May 22 2021
The National Weather Service in Denver Colorado has issued a
* Tornado Warning for...
North central Arapahoe County in northeastern Colorado...
South central Adams County in northeastern Colorado...
* Until 230 PM MDT.
* At 204 PM MDT, a severe thunderstorm capable of producing a tornado
was located near Manila Village, or 23 miles east of Denver, moving
northwest at 10 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Expect damage to mobile homes, roofs, and vehicles.
* Locations impacted include...
Eastern Aurora, Bennett, Strasburg and Manila Village.
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 3962 10445 3974 10459 3985 10444 3973 10429
TIME...MOT...LOC 2004Z 138DEG 9KT 3972 10450
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
RPK1 follow-up statement
347
WWUS55 KBOU 222021
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
221 PM MDT Sat May 22 2021
COC001-005-222031-
/O.EXP.KBOU.TO.W.0007.000000T0000Z-210522T2030Z/
Arapahoe CO-Adams CO-
221 PM MDT Sat May 22 2021
...THE TORNADO WARNING FOR NORTH CENTRAL ARAPAHOE AND SOUTH CENTRAL
ADAMS COUNTIES WILL EXPIRE AT 230 PM MDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.
A Tornado Watch remains in effect until 800 PM MDT for northeastern
Colorado.
LAT...LON 3962 10445 3974 10459 3985 10444 3973 10429
TIME...MOT...LOC 2021Z 138DEG 9KT 3975 10453
$$
RPKThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 7:18 PM MDT | Special Weather Statement | BOU | Morgan | 27 min |
| May 21, 10:57 PM MDT | Special Weather Statement | BOU | Phillips, Sedgwick | 48 min |
| May 22, 1:11 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Logan, Morgan, Washington | 49 min |
| May 22, 1:28 PM MDT | Tornado Warning | BOU | Morgan | 17 min |
| May 22, 1:45 PM MDT | Tornado Warning | BOU | Morgan | 15 min |
| May 22, 1:54 PM MDT | Tornado Warning | BOU | Morgan, Washington | 36 min |
| May 22, 1:56 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Elbert | 28 min |
| May 22, 1:58 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Morgan, Washington | 33 min |
| May 22, 2:18 PM MDT | Special Weather Statement | BOU | Adams | 42 min |
| May 22, 2:43 PM MDT | Tornado Warning | BOU | Logan | 17 min |
| May 22, 2:46 PM MDT | Severe Thunderstorm Warning | BOU | Phillips, Sedgwick | 44 min |
| May 22, 2:57 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Sedgwick | 48 min |
| May 22, 3:01 PM MDT | Tornado Warning | BOU | Logan | 29 min |
| May 22, 3:16 PM MDT | Tornado Warning | BOU | Lincoln | 29 min |
| May 22, 3:25 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 35 min |
| May 22, 3:48 PM MDT | Tornado Warning | BOU | Elbert, Lincoln | 27 min |
| May 22, 3:53 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 26 min |
| May 22, 4:13 PM MDT | Tornado Warning | BOU | Elbert, Lincoln | 32 min |
| May 22, 4:42 PM MDT | Tornado Warning | BOU | Elbert, Lincoln | 33 min |
| May 22, 5:16 PM MDT | Tornado Warning | BOU | Elbert, Lincoln | 29 min |
| May 22, 5:27 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 33 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.