Alert archive / Colorado / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 85, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 19, 2021, 5:16 PM MDT for Phillips County, Sedgwick County, Colorado. It was in force for 29 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 19, 2021, 5:16 PM MDT (23:16 UTC)
- Expired
- Jun 19, 2021, 5:45 PM MDT
- In force
- 29 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Phillips County, CO, Sedgwick County, CO
The radar
The Goodland radar (KGLD), 149 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 19, 1:44 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 11.3 hours before the alert went out and 121 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
- 2627 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
124 WUUS55 KBOU 192316 SVRBOU COC095-115-192345- /O.NEW.KBOU.SV.W.0085.210619T2316Z-210619T2345Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Denver CO 516 PM MDT Sat Jun 19 2021 The National Weather Service in Denver Colorado has issued a * Severe Thunderstorm Warning for... Eastern Phillips County in northeastern Colorado... Eastern Sedgwick County in northeastern Colorado... * Until 545 PM MDT. * At 516 PM MDT, severe thunderstorms were located along a line extending from 9 miles northwest of Venango to 13 miles north of Eckley, or along a line extending from 10 miles southeast of Julesburg to 18 miles northeast of Yuma, moving east at 20 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Holyoke, Amherst, Pleasant Valley and Sixteen-Mile Corner. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4044 10241 4096 10222 4095 10205 4044 10205 TIME...MOT...LOC 2316Z 264DEG 19KT 4088 10211 4031 10248 HAIL...0.75IN WIND...60MPH $$ RPK
1 follow-up statement
924
WWUS55 KBOU 192344
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
544 PM MDT Sat Jun 19 2021
COC095-115-192354-
/O.EXP.KBOU.SV.W.0085.000000T0000Z-210619T2345Z/
Phillips CO-Sedgwick CO-
544 PM MDT Sat Jun 19 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN PHILLIPS AND EASTERN
SEDGWICK COUNTIES WILL EXPIRE AT 545 PM MDT...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with these thunderstorms.
A Severe Thunderstorm Watch remains in effect until 900 PM MDT for
northeastern Colorado.
LAT...LON 4044 10241 4096 10222 4095 10205 4044 10205
TIME...MOT...LOC 2344Z 264DEG 19KT 4089 10193 4032 10230
$$
RPKThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 8:57 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 33 min |
| Jun 19, 11:54 AM MDT | Fire Weather Watch | BOU | Grand, Jackson, Summit | 15 hr |
| Jun 19, 1:25 PM MDT | Special Weather Statement | BOU | Arapahoe | 35 min |
| Jun 19, 1:57 PM MDT | Special Weather Statement | BOU | Denver | 33 min |
| Jun 19, 2:09 PM MDT | Tornado Warning | BOU | Adams | 36 min |
| Jun 19, 2:40 PM MDT | Tornado Warning | BOU | Morgan | 35 min |
| Jun 19, 2:52 PM MDT | Tornado Warning | BOU | Adams | 23 min |
| Jun 19, 2:54 PM MDT | Tornado Warning | BOU | Elbert | 21 min |
| Jun 19, 3:14 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 31 min |
| Jun 19, 3:26 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Washington | 34 min |
| Jun 19, 3:33 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 27 min |
| Jun 19, 3:35 PM MDT | Special Weather Statement | BOU | Washington | 55 min |
| Jun 19, 3:41 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 49 min |
| Jun 19, 3:55 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 50 min |
| Jun 19, 4:04 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 41 min |
| Jun 19, 4:09 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 51 min |
| Jun 19, 4:12 PM MDT | Tornado Warning | BOU | Washington | 33 min |
| Jun 19, 4:15 PM MDT | Tornado Warning | BOU | Logan | 30 min |
| Jun 19, 4:37 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 38 min |
| Jun 19, 4:49 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Phillips, Sedgwick | 41 min |
| Jun 19, 4:57 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 33 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.