Alert archive / Colorado / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 73, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 15, 2021, 4:14 PM MDT for Elbert County, Colorado. It was in force for 31 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 15, 2021, 4:14 PM MDT (22:14 UTC)
- Expired
- Jun 15, 2021, 4:45 PM MDT
- In force
- 31 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Hail
- 1.75 in
- Wind
- 60.0 mph
County Elbert County, CO
The radar
The Denver radar (KFTG), 69 km from the middle of the area, began a volume at 22:14 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 12:00Z, 10.2 hours before the alert went out and 101 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
- 23 J/kg
- Mixed-layer CIN
- -565 J/kg
- Mixed-layer LCL
- 3238 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 12 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
313
WUUS55 KBOU 152214
SVRBOU
COC039-152245-
/O.NEW.KBOU.SV.W.0073.210615T2214Z-210615T2245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
414 PM MDT Tue Jun 15 2021
The National Weather Service in Denver Colorado has issued a
* Severe Thunderstorm Warning for...
Central Elbert County in east central Colorado...
* Until 445 PM MDT.
* At 414 PM MDT, a severe thunderstorm was located 10 miles north of
Simla, or 21 miles west of Limon, moving south at 10 mph.
HAZARD...Golf ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees. People and
animals outdoors will be injured. Expect hail damage to
roofs, siding, windows, and vehicles.
* Locations impacted include...
Simla and Matheson.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3935 10424 3936 10393 3913 10390 3913 10422
TIME...MOT...LOC 2214Z 354DEG 10KT 3929 10410
HAIL...1.75IN
WIND...60MPH
$$
RPK1 follow-up statement
206
WWUS55 KBOU 152238
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
438 PM MDT Tue Jun 15 2021
COC039-152247-
/O.EXP.KBOU.SV.W.0073.000000T0000Z-210615T2245Z/
Elbert CO-
438 PM MDT Tue Jun 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL ELBERT COUNTY WILL
EXPIRE AT 445 PM MDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However small
hail, gusty winds and heavy rain are still possible with this
thunderstorm.
LAT...LON 3935 10424 3936 10393 3913 10390 3913 10422
TIME...MOT...LOC 2237Z 354DEG 10KT 3923 10409
$$
RPKThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 15, 3:29 PM MDT | Special Weather Statement | BOU | Elbert | 31 min |
| Jun 15, 3:41 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 34 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.