Alert archive / Colorado / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 42, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at May 22, 2021, 9:37 PM MDT for Lincoln County, Colorado. It was in force for 38 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
- May 22, 2021, 9:37 PM MDT (03:37 UTC)
- Expired
- May 22, 2021, 10:15 PM MDT
- In force
- 38 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Lincoln County, CO
The radar
The Pueblo radar (KPUX), 113 km from the middle of the area, began a volume at 03:41 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 nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 3.6 hours before the alert went out and 74 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
- 34 J/kg
- Mixed-layer CIN
- -91 J/kg
- Mixed-layer LCL
- 1134 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 279 m²/s²
- 0-3 km storm-relative helicity
- 385 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
821
WUUS55 KBOU 230337
SVRBOU
COC073-230415-
/O.NEW.KBOU.SV.W.0042.210523T0337Z-210523T0415Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
937 PM MDT Sat May 22 2021
The National Weather Service in Denver Colorado has issued a
* Severe Thunderstorm Warning for...
Northeastern Lincoln County in east central Colorado...
* Until 1015 PM MDT.
* At 935 PM MDT, a severe thunderstorm was located 5 miles north of
Boyero, or 22 miles southwest of Flagler, moving north at 45 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...
Arriba and Boyero.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3943 10356 3948 10318 3913 10315 3913 10316
3893 10316 3891 10330
TIME...MOT...LOC 0335Z 168DEG 37KT 3901 10328
HAIL...1.00IN
WIND...60MPH
$$
KRIEDERMAN2 follow-up statements
967
WWUS55 KBOU 230359
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
959 PM MDT Sat May 22 2021
COC073-230415-
/O.CON.KBOU.SV.W.0042.000000T0000Z-210523T0415Z/
Lincoln CO-
959 PM MDT Sat May 22 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM MDT
FOR NORTHEASTERN LINCOLN COUNTY...
At 959 PM MDT, a severe thunderstorm was located 4 miles southwest of
Arriba, or 15 miles west of Flagler, moving north at 45 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees. Hail damage to
vehicles is expected.
Locations impacted include...
Arriba.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3943 10356 3948 10318 3913 10315 3913 10316
3910 10316 3916 10332
TIME...MOT...LOC 0359Z 168DEG 37KT 3925 10335
HAIL...1.00IN
WIND...60MPH
$$
KRIEDERMAN067
WWUS55 KBOU 230410
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
1010 PM MDT Sat May 22 2021
COC073-230420-
/O.EXP.KBOU.SV.W.0042.000000T0000Z-210523T0415Z/
Lincoln CO-
1010 PM MDT Sat May 22 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LINCOLN COUNTY
WILL EXPIRE AT 1015 PM MDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds up to 45 mph are still possible with this thunderstorm.
LAT...LON 3943 10356 3948 10318 3913 10315 3913 10316
3910 10316 3916 10332
TIME...MOT...LOC 0410Z 168DEG 37KT 3935 10338
$$
KRIEDERMANThe 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 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, 3:14 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert, Lincoln, Washington | 46 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.