Alert archive / Colorado / Tornado Warnings in 2014
Tornado Warning 68, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jun 18, 2014, 8:17 PM MDT for Washington County, Colorado. It was in force for 28 min. 6 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
- Jun 18, 2014, 8:17 PM MDT (02:17 UTC)
- Expired
- Jun 18, 2014, 8:45 PM MDT
- In force
- 28 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
County Washington County, CO
The radar
The Denver radar (KFTG), 139 km from the middle of the area, began a volume at 02:21 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 |
|---|---|---|---|
| Jun 18, 8:26 PM MDT | TORNADO | 10 N Platner, CO | TORNADO ON GROUND |
| Jun 18, 8:26 PM MDT | TORNADO | 10 N Platner, CO | TORNADO ON GROUND |
| Jun 18, 8:30 PM MDT | TSTM WND DMG | 5 Ne Akron, CO | LARGE BARN SIGNIFICANTLY DAMAGED. SIDE OF BARN AND ALUMINUM ROOF REMOVED. |
| Jun 18, 8:36 PM MDT | TORNADO | 5 N Platner, CO | TOUCHDOWN IN OPEN FIELD WITH NO DAMAGE REPORTED |
| Jun 18, 8:36 PM MDT | TORNADO | Lone Star, CO | TOUCHDOWN IN OPEN FIELD WITH NO DAMAGE REPORTED |
| Jun 18, 8:48 PM MDT | HAIL 1 | Burdett, 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 (KDEN), launched 00:00Z, 2.3 hours before the alert went out and 51 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
- 382 J/kg
- Mixed-layer CIN
- -116 J/kg
- Mixed-layer LCL
- 2444 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 143 m²/s²
- 0-3 km storm-relative helicity
- 391 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
197
WFUS55 KBOU 190217
TORBOU
COC121-190245-
/O.NEW.KBOU.TO.W.0068.140619T0217Z-140619T0245Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
817 PM MDT WED JUN 18 2014
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A
* TORNADO WARNING FOR...
NORTHEASTERN WASHINGTON COUNTY IN NORTHEAST COLORADO...
* UNTIL 845 PM MDT
* AT 817 PM MDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED NEAR MIDWAY...OR 10 MILES NORTHWEST OF AKRON...
MOVING EAST AT 30 MPH.
HAZARD...TORNADO.
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...
AKRON...LONE STAR...PREWITT RESERVOIR...MIDWAY AND BURDETT.
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 IN A MOBILE HOME...A
VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4019 10281 4015 10343 4043 10345 4044 10309
4044 10278
TIME...MOT...LOC 0217Z 251DEG 27KT 4026 10335
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
BARJENBRUCH1 follow-up statement
603
WWUS55 KBOU 190231
SVSBOU
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
831 PM MDT WED JUN 18 2014
COC121-190245-
/O.CON.KBOU.TO.W.0068.000000T0000Z-140619T0245Z/
WASHINGTON CO-
831 PM MDT WED JUN 18 2014
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM MDT FOR
NORTHEASTERN WASHINGTON COUNTY...
AT 830 PM MDT...A CONFIRMED TORNADO WAS LOCATED ABOUT 10 MILES NORTH
OF PLATNER...OR ABOUT 15 MILES NORTHEAST OF AKRON...MOVING EAST AT
30 MPH.
HAZARD...DAMAGING TORNADO AND PING PONG BALL SIZE HAIL.
SOURCE...WEATHER SPOTTERS CONFIRMED TORNADO.
IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE
TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE DAMAGE IS
LIKELY.
LOCATIONS IMPACTED INCLUDE...
LONE STAR AND BURDETT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW! MOVE TO A
BASEMENT OR AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY
BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4019 10281 4019 10319 4043 10334 4044 10309
4044 10278
TIME...MOT...LOC 0230Z 251DEG 27KT 4029 10322
TORNADO...OBSERVED
HAIL...1.50IN
$$
BARJENBRUCHThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 6:03 PM MDT | Special Weather Statement | BOU | Broomfield | 27 min |
| Jun 18, 6:28 PM MDT | Special Weather Statement | BOU | Denver | 32 min |
| Jun 18, 6:33 PM MDT | Special Weather Statement | BOU | Broomfield | 27 min |
| Jun 18, 6:57 PM MDT | Special Weather Statement | BOU | Broomfield, Denver | 33 min |
| Jun 18, 7:06 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Denver | 24 min |
| Jun 18, 7:18 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 42 min |
| Jun 18, 7:29 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Washington | 46 min |
| Jun 18, 7:33 PM MDT | Special Weather Statement | BOU | Adams | 27 min |
| Jun 18, 7:41 PM MDT | Tornado Warning | BOU | Logan, Washington | 34 min |
| Jun 18, 8:00 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Washington | 30 min |
| Jun 18, 8:10 PM MDT | Tornado Warning | BOU | Logan, Phillips | 50 min |
| Jun 18, 8:40 PM MDT | Tornado Warning | BOU | Washington | 35 min |
| Jun 18, 8:48 PM MDT | Tornado Warning | BOU | Logan, Phillips, Sedgwick | 27 min |
| Jun 18, 9:10 PM MDT | Tornado Warning | BOU | Phillips, Sedgwick | 35 min |
Nearby
Tornado Warnings in Colorado, 2014Every tornado warning in 2014Tornadoes in 2014
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.