Alert archive / Colorado / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 46, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at May 23, 2021, 3:14 PM MDT for 4 counties in Colorado. It was in force for 46 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 23, 2021, 3:14 PM MDT (21:14 UTC)
- Expired
- May 23, 2021, 4:00 PM MDT
- In force
- 46 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Arapahoe County, CO, Elbert County, CO, Lincoln County, CO, Washington County, CO
The radar
The Denver radar (KFTG), 75 km from the middle of the area, began a volume at 21:15 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 23, 3:19 PM MDT | TSTM WND GST 64 | 1 Ene Limon, 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 23, 12:06 PM MDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 9.2 hours before the alert went out and 51 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
- 1106 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 177 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
127
WUUS55 KBOU 232114
SVRBOU
COC005-039-073-121-232200-
/O.NEW.KBOU.SV.W.0046.210523T2114Z-210523T2200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
314 PM MDT Sun May 23 2021
The National Weather Service in Denver Colorado has issued a
* Severe Thunderstorm Warning for...
Northeastern Elbert County in east central Colorado...
Eastern Arapahoe County in northeastern Colorado...
Southwestern Washington County in northeastern Colorado...
North central Lincoln County in east central Colorado...
* Until 400 PM MDT.
* At 313 PM MDT, a severe thunderstorm was located 8 miles east of
Agate, or 14 miles north of Limon, moving north at 45 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Limon, Woodlin School, Cottonwood Valley, Last Chance and Woodrow.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 800 PM MDT for northeastern
and east central Colorado.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3914 10386 3950 10386 3974 10377 3974 10371
3990 10371 4000 10367 4001 10337 3913 10355
TIME...MOT...LOC 2113Z 195DEG 39KT 3946 10378
HAIL...0.88IN
WIND...60MPH
$$
DANIELSON1 follow-up statement
363
WWUS55 KBOU 232144
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
344 PM MDT Sun May 23 2021
COC005-039-232153-
/O.CAN.KBOU.SV.W.0046.000000T0000Z-210523T2200Z/
Elbert CO-Arapahoe CO-
344 PM MDT Sun May 23 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ELBERT AND
EASTERN ARAPAHOE COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 800 PM MDT for northeastern
and east central Colorado.
LAT...LON 3913 10368 3953 10369 3967 10369 3973 10370
3987 10370 4000 10367 4001 10337 3913 10355
TIME...MOT...LOC 2143Z 195DEG 39KT 3978 10367
$$
COC073-121-232200-
/O.CON.KBOU.SV.W.0046.000000T0000Z-210523T2200Z/
Washington CO-Lincoln CO-
344 PM MDT Sun May 23 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM MDT
FOR SOUTHWESTERN WASHINGTON AND NORTH CENTRAL LINCOLN COUNTIES...
At 343 PM MDT, a severe thunderstorm was located 4 miles northwest of
Last Chance, or 33 miles south of Fort Morgan, moving north at 45
mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Limon, Woodlin School, Last Chance and Woodrow.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 800 PM MDT for northeastern
and east central Colorado.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3913 10368 3953 10369 3967 10369 3973 10370
3987 10370 4000 10367 4001 10337 3913 10355
TIME...MOT...LOC 2143Z 195DEG 39KT 3978 10367
HAIL...0.88IN
WIND...60MPH
$$
DANIELSONThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 6:06 PM MDT | Tornado Warning | BOU | Washington | 24 min |
| May 22, 8:00 PM MDT | Special Weather Statement | BOU | Phillips | 30 min |
| May 22, 8:29 PM MDT | Special Weather Statement | BOU | Phillips, Sedgwick | 46 min |
| May 22, 9:37 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 38 min |
| May 23, 12:40 PM MDT | Tornado Warning | BOU | Elbert, Lincoln | 19 min |
| May 23, 12:41 PM MDT | Special Weather Statement | BOU | Weld | 49 min |
| May 23, 12:50 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 40 min |
| May 23, 1:24 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 36 min |
| May 23, 1:28 PM MDT | Special Weather Statement | BOU | Weld | 32 min |
| May 23, 1:47 PM MDT | Tornado Warning | BOU | Arapahoe, Elbert, Lincoln, Washington | 28 min |
| May 23, 2:13 PM MDT | Tornado Warning | BOU | Washington | 32 min |
| May 23, 2:44 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Washington | 31 min |
| May 23, 2:55 PM MDT | Tornado Warning | BOU | Washington | 20 min |
| May 23, 3:11 PM MDT | Tornado Warning | BOU | Logan, Washington | 34 min |
| May 23, 3:42 PM MDT | Tornado Warning | BOU | Logan | 33 min |
| May 23, 4:06 PM MDT | Areal Flood Advisory | BOU | Washington | 3 hr |
| May 23, 4:10 PM MDT | Tornado Warning | BOU | Logan | 20 min |
| May 23, 4:27 PM MDT | Tornado Warning | BOU | Logan | 23 min |
| May 23, 4:43 PM MDT | Tornado Warning | BOU | Washington | 17 min |
| May 23, 4:58 PM MDT | Tornado Warning | BOU | Washington | 17 min |
| May 23, 5:12 PM MDT | Areal Flood Advisory | BOU | Logan, Washington | 104 min |
| May 23, 5:13 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Phillips, Washington | 32 min |
| May 23, 5:31 PM MDT | Tornado Warning | BOU | Washington | 14 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.