Alert archive / Colorado / Tornado Warnings in 2013
Tornado Warning 4, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Apr 8, 2013, 7:59 PM MDT for Morgan County, Washington County, Colorado. It was in force for 46 min. 3 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
- Apr 8, 2013, 7:59 PM MDT (01:59 UTC)
- Expired
- Apr 8, 2013, 8:45 PM MDT
- In force
- 46 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
Counties Morgan County, CO, Washington County, CO
The radar
The Denver radar (KFTG), 113 km from the middle of the area, began a volume at 01:58 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, 8:00 PM MDT | TSTM WND DMG | 1 S Akron, CO | TRAILER HOME BLOWN OVER AND DESTROYED |
| Apr 8, 8:00 PM MDT | NON-TSTM WND DMG | S Akron, CO | THREE 18 INCH DIAMETER TRANSMISSION POLES SNAPPED |
| Apr 8, 8:51 PM MDT | TORNADO | 8 W Akron, 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, 2.0 hours before the alert went out and 27 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.
311
WFUS55 KBOU 090159
TORBOU
COC087-121-090245-
/O.NEW.KBOU.TO.W.0004.130409T0159Z-130409T0245Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
759 PM MDT MON APR 8 2013
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A
* TORNADO WARNING FOR...
CENTRAL WASHINGTON COUNTY IN NORTHEAST COLORADO
SOUTHEASTERN MORGAN COUNTY IN NORTHEAST COLORADO
* UNTIL 845 PM MDT
* AT 759 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO 13
MILES SOUTHWEST OF AKRON. THIS STORM WAS MOVING NORTHEAST AT 20
MPH.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PLATNER...
MIDWAY AND AKRON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING LARGE
DAMAGING HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.
&&
LAT...LON 3997 10339 4012 10355 4025 10338 4024 10319
4017 10306 4001 10308
TIME...MOT...LOC 0159Z 240DEG 18KT 4005 10336
$$3 follow-up statements
863
WWUS55 KBOU 090213
SVSBOU
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
813 PM MDT MON APR 8 2013
COC087-090223-
/O.CAN.KBOU.TO.W.0004.000000T0000Z-130409T0245Z/
MORGAN CO-
813 PM MDT MON APR 8 2013
...THE TORNADO WARNING FOR SOUTHEASTERN MORGAN COUNTY IS CANCELLED...
LAT...LON 4003 10331 4014 10343 4025 10331 4024 10319
4017 10306 4005 10307
TIME...MOT...LOC 0213Z 237DEG 18KT 4009 10329
$$
COC121-090245-
/O.CON.KBOU.TO.W.0004.000000T0000Z-130409T0245Z/
WASHINGTON CO-
813 PM MDT MON APR 8 2013
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM MDT FOR CENTRAL
WASHINGTON COUNTY...
AT 813 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS
LOCATED 8 MILES SOUTHWEST OF AKRON. THIS STORM WAS MOVING NORTHEAST
AT 20 MPH.
LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
PLATNER AND AKRON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING LARGE
DAMAGING HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.
&&
LAT...LON 4003 10331 4014 10343 4025 10331 4024 10319
4017 10306 4005 10307
TIME...MOT...LOC 0213Z 237DEG 18KT 4009 10329
$$350
WWUS55 KBOU 090214
SVSBOU
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
814 PM MDT MON APR 8 2013
COC087-090223-
/O.CAN.KBOU.TO.W.0004.000000T0000Z-130409T0245Z/
MORGAN CO-
814 PM MDT MON APR 8 2013
...THE TORNADO WARNING FOR SOUTHEASTERN MORGAN COUNTY IS CANCELLED...
LAT...LON 4003 10331 4014 10343 4025 10331 4024 10319
4017 10306 4005 10307
TIME...MOT...LOC 0213Z 237DEG 18KT 4009 10329
$$
COC121-090245-
/O.CON.KBOU.TO.W.0004.000000T0000Z-130409T0245Z/
WASHINGTON CO-
814 PM MDT MON APR 8 2013
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM MDT FOR CENTRAL
WASHINGTON COUNTY...
AT 813 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS
LOCATED 8 MILES SOUTHWEST OF AKRON. THIS STORM WAS MOVING NORTHEAST
AT 20 MPH.
LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
PLATNER AND AKRON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING LARGE
DAMAGING HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.
&&
LAT...LON 4003 10331 4014 10343 4025 10331 4024 10319
4017 10306 4005 10307
TIME...MOT...LOC 0213Z 237DEG 18KT 4009 10329
$$425
WWUS55 KBOU 090226
SVSBOU
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
826 PM MDT MON APR 8 2013
COC121-090245-
/O.CON.KBOU.TO.W.0004.000000T0000Z-130409T0245Z/
WASHINGTON CO-
826 PM MDT MON APR 8 2013
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM MDT FOR CENTRAL
WASHINGTON COUNTY...
AT 825 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS
LOCATED 3 MILES SOUTHWEST OF AKRON. THIS STORM WAS MOVING NORTHEAST
AT 25 MPH.
LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
AKRON.
PEOPLE IN AKRON SHOULD TAKE SHELTER IN A SAFE BUILDING IMMEDIATELY!
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING LARGE
DAMAGING HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.
&&
LAT...LON 4012 10313 4007 10327 4019 10337 4025 10331
4024 10319 4019 10309
TIME...MOT...LOC 0225Z 213DEG 24KT 4016 10324
$$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, 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, 9:00 PM MDT | Tornado Warning | BOU | Logan, Phillips | 30 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.