Alert archive / Colorado / Tornado Warnings in 2013
Tornado Warning 8, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Apr 8, 2013, 9:00 PM MDT for Logan County, Phillips County, Colorado. It was in force for 30 min. 1 report 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
- Apr 8, 2013, 9:00 PM MDT (03:00 UTC)
- Expired
- Apr 8, 2013, 9:30 PM MDT
- In force
- 30 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
Counties Logan County, CO, Phillips County, CO
The radar
The Goodland radar (KGLD), 149 km from the middle of the area, began a volume at 03:01 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 |
|---|---|---|---|
| Apr 8, 9:32 PM MDT | TSTM WND GST 65 | 4 E Haxtun, CO |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 8, 2:16 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 3.0 hours before the alert went out and 97 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
- 105 J/kg
- Mixed-layer CIN
- -87 J/kg
- Mixed-layer LCL
- 2884 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 258 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
474
WFUS55 KBOU 090300
TORBOU
COC075-095-090330-
/O.NEW.KBOU.TO.W.0008.130409T0300Z-130409T0330Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
900 PM MDT MON APR 8 2013
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A
* TORNADO WARNING FOR...
WESTERN PHILLIPS COUNTY IN NORTHEAST COLORADO
SOUTHEASTERN LOGAN COUNTY IN NORTHEAST COLORADO
* UNTIL 930 PM MDT
* AT 900 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 9 MILES
SOUTHEAST OF ST PETERSBURG...OR 25 MILES SOUTHWEST OF HOLYOKE. THIS
STORM WAS MOVING NORTHEAST AT 30 MPH.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WAGES...ST
PETERSBURG...PAOLI...HIGHLAND CENTER AND HAXTUN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING LARGE
DAMAGING HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.
&&
LAT...LON 4044 10230 4043 10236 4043 10277 4055 10284
4075 10266 4075 10250 4065 10240
TIME...MOT...LOC 0300Z 230DEG 27KT 4047 10270
$$The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 8, 6:31 PM MDT | Special Weather Statement | BOU | Washington | 44 min |
| Apr 8, 7:03 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Washington | 27 min |
| Apr 8, 7:17 PM MDT | Tornado Warning | BOU | Phillips | 28 min |
| Apr 8, 7:24 PM MDT | Tornado Warning | BOU | Washington | 36 min |
| Apr 8, 7:34 PM MDT | Tornado Warning | BOU | Morgan, Washington | 26 min |
| Apr 8, 7:46 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 29 min |
| Apr 8, 7:59 PM MDT | Tornado Warning | BOU | Morgan, Washington | 46 min |
| Apr 8, 8:06 PM MDT | Tornado Warning | BOU | Washington | 24 min |
| Apr 8, 8:20 PM MDT | Severe Thunderstorm Warning | BOU | Phillips, Sedgwick | 40 min |
| Apr 8, 8:33 PM MDT | Tornado Warning | BOU | Washington | 27 min |
| Apr 8, 8:52 PM MDT | Tornado Warning | BOU | Washington | 23 min |
| Apr 8, 9:17 PM MDT | Tornado Warning | BOU | Washington | 28 min |
| Apr 8, 9:31 PM MDT | Tornado Warning | BOU | Phillips | 29 min |
| Apr 8, 9:45 PM MDT | Tornado Warning | BOU | Washington | 30 min |
| Apr 8, 10:01 PM MDT | Severe Thunderstorm Warning | BOU | Sedgwick | 29 min |
Nearby
Tornado Warnings in Colorado, 2013Every tornado warning in 2013Tornadoes in 2013
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.