Alert archive / Colorado / Tornado Warnings in 2020
Tornado Warning 2, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jul 8, 2020, 6:17 PM MDT for Phillips County, Sedgwick County, Colorado. It was in force for 28 min. 2 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
- Jul 8, 2020, 6:17 PM MDT (00:17 UTC)
- Expired
- Jul 8, 2020, 6:45 PM MDT
- In force
- 28 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Tornado
- Observed
- Hail
- 0.75 in
Counties Phillips County, CO, Sedgwick County, CO
The radar
The Goodland radar (KGLD), 156 km from the middle of the area, began a volume at 00:20 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 |
|---|---|---|---|
| Jul 8, 6:20 PM MDT | TORNADO | 12 Se Julesburg, CO | SEDGWICK EM REPORTED DAMAGE TO AN UNOCCUPIED BUILDING NEAR THE INTERSECTION OF CO 16 AND CO 55. |
| Jul 8, 6:29 PM MDT | TSTM WND GST 65 | 5 N Sixteen-Mile Corner, 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 00:00Z, 0.3 hours before the alert went out and 130 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
- 33 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 4899 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- -25 m²/s²
- 0-3 km storm-relative helicity
- 35 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
655 WFUS55 KBOU 090017 TORBOU COC095-115-090045- /O.NEW.KBOU.TO.W.0002.200709T0017Z-200709T0045Z/ BULLETIN - EAS ACTIVATION REQUESTED Tornado Warning National Weather Service Denver CO 617 PM MDT Wed Jul 8 2020 The National Weather Service in Denver Colorado has issued a * Tornado Warning for... Northeastern Phillips County in northeastern Colorado... Eastern Sedgwick County in northeastern Colorado... * Until 645 PM MDT. * At 615 PM MDT, a confirmed tornado was located just southeast of Julesburg. Other weak tornadoes are also possible across eastern Sedgwick and Phillips counties. HAZARD...Tornado. SOURCE...Weather spotters confirmed tornado. IMPACT...Expect damage to mobile homes, roofs, and vehicles. * Locations impacted include... Julesburg, Amherst, Pleasant Valley and Sixteen-Mile Corner. PRECAUTIONARY/PREPAREDNESS ACTIONS... To repeat, a tornado is on the ground. 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 4054 10226 4100 10228 4100 10206 4054 10205 TIME...MOT...LOC 0015Z 045DEG 19KT 4094 10225 TORNADO...OBSERVED HAIL...<.75IN $$ ENTREKIN
1 follow-up statement
699
WWUS55 KBOU 090043
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
643 PM MDT Wed Jul 8 2020
COC095-115-090053-
/O.EXP.KBOU.TO.W.0002.000000T0000Z-200709T0045Z/
Phillips CO-Sedgwick CO-
643 PM MDT Wed Jul 8 2020
...THE TORNADO WARNING FOR NORTHEASTERN PHILLIPS AND EASTERN SEDGWICK
COUNTIES WILL EXPIRE AT 645 PM MDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. No further reports of
tornadoes have been reported. Therefore, the warning will be
allowed to expire. However gusty winds to 60 mph are still possible
with this thunderstorm.
LAT...LON 4054 10226 4100 10228 4100 10206 4054 10205
TIME...MOT...LOC 0043Z 045DEG 19KT 4084 10238
$$
ENTREKINThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 6:00 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Phillips, Sedgwick | 45 min |
| Jul 8, 6:42 PM MDT | Severe Thunderstorm Warning | BOU | Phillips, Sedgwick | 21 min |
| Jul 9, 2:35 PM MDT | Red Flag Warning | BOU | Boulder, Grand, Jackson, Larimer, Park, Summit and 1 more | 29 hr |
| Jul 9, 3:27 PM MDT | Special Weather Statement | BOU | Lincoln | 33 min |
| Jul 9, 5:11 PM MDT | Special Weather Statement | BOU | Washington | 49 min |
| Jul 9, 5:16 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 44 min |
| Jul 9, 5:25 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Washington | 39 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.