Alert archive / Colorado / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 65, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 13, 2021, 5:14 PM MDT for Arapahoe County, Denver County, Colorado. It was in force for 31 min. 10 reports 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
- Jun 13, 2021, 5:14 PM MDT (23:14 UTC)
- Expired
- Jun 13, 2021, 5:45 PM MDT
- In force
- 31 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 50.0 mph
Counties Arapahoe County, CO, Denver County, CO
The radar
The Denver radar (KFTG), 36 km from the middle of the area, began a volume at 23:18 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 |
|---|---|---|---|
| Jun 13, 5:14 PM MDT | HAIL 1.25 | 2 Ese Cherry Creek Rese, CO | DAMAGE TO VEHICLES AND TRAILERS REPORTED AT CHERRY CREEK STATE PARK. MINOR FLOODING REPORTED AS WELL. |
| Jun 13, 5:16 PM MDT | HAIL 1.5 | 3 Sw Aurora, CO | REPORT FROM MPING: PING PONG BALL (1.50 IN.). |
| Jun 13, 5:17 PM MDT | HAIL 1.25 | 3 Sw Aurora, CO | REPORT FROM MPING: HALF DOLLAR (1.25 IN.). |
| Jun 13, 5:19 PM MDT | HAIL 0.75 | 3 E Cherry Creek Reserv, CO | REPORT FROM MPING: DIME (0.75 IN.). |
| Jun 13, 5:20 PM MDT | HAIL 1.5 | 2 Nne Cherry Creek Rese, CO | |
| Jun 13, 5:35 PM MDT | HAIL 1 | 3 N Cherry Hills Villag, CO | |
| Jun 13, 5:42 PM MDT | HAIL 1 | 3 Ne Englewood, CO | PHOTO OF SEVERAL 1 INCH DIAMETER HAILSTONES. |
| Jun 13, 5:43 PM MDT | HAIL 1 | 1 Ne Cherry Hills Villa, CO | REPORT VIA SPOTTERNETWORK. |
| Jun 13, 5:45 PM MDT | HAIL 1 | 2 Nne Cherry Hills Vill, CO | |
| Jun 13, 5:55 PM MDT | HAIL 1 | 3 Nne Englewood, CO |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 11.2 hours before the alert went out and 146 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
- 827 J/kg
- Mixed-layer CIN
- -387 J/kg
- Mixed-layer LCL
- 1858 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
001
WUUS55 KBOU 132314
SVRBOU
COC005-031-132345-
/O.NEW.KBOU.SV.W.0065.210613T2314Z-210613T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
514 PM MDT Sun Jun 13 2021
The National Weather Service in Denver Colorado has issued a
* Severe Thunderstorm Warning for...
Southwestern Arapahoe County in northeastern Colorado...
Southwestern Denver County in northeastern Colorado...
* Until 545 PM MDT.
* At 514 PM MDT, a severe thunderstorm was located near Greenwood
Village, or 6 miles southeast of Denver, moving east at 10 mph.
HAZARD...Half dollar size hail.
SOURCE...Trained weather spotters.
IMPACT...Damage to vehicles is expected.
* Locations impacted include...
Southwestern Denver, southwestern Aurora, Centennial, northwestern
Parker, northeastern Littleton, Englewood, Greenwood Village and
Sheridan.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3961 10505 3972 10505 3966 10467 3956 10479
3956 10481
TIME...MOT...LOC 2314Z 291DEG 8KT 3964 10487
HAIL...1.25IN
WIND...<50MPH
$$
SCHLATTER1 follow-up statement
403
WWUS55 KBOU 132337
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
537 PM MDT Sun Jun 13 2021
COC005-031-132345-
/O.CON.KBOU.SV.W.0065.000000T0000Z-210613T2345Z/
Arapahoe CO-Denver CO-
537 PM MDT Sun Jun 13 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM MDT
FOR SOUTHWESTERN ARAPAHOE AND SOUTH CENTRAL DENVER COUNTIES...
At 537 PM MDT, a severe thunderstorm was located near Greenwood
Village, or 7 miles southeast of Denver, moving east at 15 mph.
HAZARD...Quarter size hail.
SOURCE...Trained weather spotters.
IMPACT...Damage to vehicles is expected.
Locations impacted include...
Southern Denver, southwestern Aurora, Centennial, northwestern
Parker, eastern Englewood and Greenwood Village.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3960 10496 3971 10497 3966 10467 3956 10479
3956 10481
TIME...MOT...LOC 2337Z 291DEG 13KT 3965 10486
HAIL...1.00IN
WIND...<50MPH
$$
SCHLATTERThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 4:02 PM MDT | Special Weather Statement | BOU | Douglas | 43 min |
| Jun 13, 4:27 PM MDT | Special Weather Statement | BOU | Denver | 33 min |
| Jun 13, 4:38 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Denver | 37 min |
| Jun 13, 4:59 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 31 min |
| Jun 13, 5:45 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Denver, Douglas | 31 min |
| Jun 13, 5:54 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 51 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.