Alert archive / Colorado / Tornado Warnings in 2020
Tornado Warning 3, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jul 19, 2020, 6:05 PM MDT for Logan County, Sedgwick County, Colorado. It was in force for 25 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
- Jul 19, 2020, 6:05 PM MDT (00:05 UTC)
- Expired
- Jul 19, 2020, 6:30 PM MDT
- In force
- 25 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
Counties Logan County, CO, Sedgwick County, CO
The radar
The Goodland radar (KGLD), 181 km from the middle of the area, began a volume at 00:07 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 |
|---|---|---|---|
| Jul 19, 4:06 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 0.1 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
- 2804 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
275
WFUS55 KBOU 200005
TORBOU
COC075-115-200030-
/O.NEW.KBOU.TO.W.0003.200720T0005Z-200720T0030Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Denver CO
605 PM MDT Sun Jul 19 2020
The National Weather Service in Denver Colorado has issued a
* Tornado Warning for...
East central Logan County in northeastern Colorado...
Southwestern Sedgwick County in northeastern Colorado...
* Until 630 PM MDT.
* At 605 PM MDT, a severe thunderstorm capable of producing a tornado
was located 6 miles east of Crook, or 21 miles southwest of
Chappell, moving east at 20 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* Locations impacted include...
Marks Butte.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4090 10249 4075 10251 4075 10274 4092 10274
TIME...MOT...LOC 0005Z 280DEG 16KT 4084 10269
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
RPK1 follow-up statement
479
WWUS55 KBOU 200022
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
622 PM MDT Sun Jul 19 2020
COC075-115-200031-
/O.EXP.KBOU.TO.W.0003.000000T0000Z-200720T0030Z/
Logan CO-Sedgwick CO-
622 PM MDT Sun Jul 19 2020
...THE TORNADO WARNING FOR EAST CENTRAL LOGAN AND SOUTHWESTERN
SEDGWICK COUNTIES WILL EXPIRE AT 630 PM MDT...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning will be allowed to
expire. However gusty winds and heavy rain are still possible with
this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 1100 PM MDT for
northeastern Colorado.
LAT...LON 4090 10249 4075 10251 4075 10274 4092 10274
TIME...MOT...LOC 0021Z 280DEG 16KT 4083 10261
$$
RPKThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 6:14 PM MDT | Tornado Warning | BOU | Phillips | 31 min |
| Jul 19, 6:34 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 26 min |
| Jul 20, 3:55 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 50 min |
| Jul 20, 4:14 PM MDT | Areal Flood Warning | BOU | Larimer, Weld | 3 hr |
| Jul 20, 4:18 PM MDT | Flash Flood Warning | BOU | Larimer, Weld | 3 hr |
| Jul 20, 4:43 PM MDT | Severe Thunderstorm Warning | BOU | Larimer, Weld | 32 min |
| Jul 20, 5:14 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 31 min |
| Jul 20, 5:15 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 28 min |
| Jul 20, 5:20 PM MDT | Areal Flood Advisory | BOU | Weld | 115 min |
| Jul 20, 5:24 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 20 min |
Nearby
Tornado Warnings in Colorado, 2020Every tornado warning in 2020Tornadoes in 2020
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.